PIC24FJ128GB204 FAMILY 28/44-Pin, General Purpose, 16-Bit Flash Microcontrollers with Cryptographic Engine, ISO 7816, USB On-The-Go and XLP Technology Cryptographic Engine Extreme Low-Power Features * AES Engine with 128,192 or 256-Bit Key * Supports ECB, CBC, OFB, CTR and CFB128 modes * DES/Triple DES (TDES) Engine: Supports 2-Key and 3-Key EDE or DED TDES * Supports up to Three Unique Keys for TDES * Programmatically Secure * True Random Number Generator * Pseudorandom Number Generator * Non-Readable, On-Chip, OTP Key Storages * Multiple Power Management Options for Extreme Power Reduction: - VBAT allows the device to transition to a backup battery for the lowest power consumption with RTCC - Deep Sleep allows near total power-down, with the ability to wake-up on internal or external triggers - Sleep and Idle modes selectively shut down peripherals and/or core for substantial power reduction and fast wake-up - Doze mode allows CPU to run at a lower clock speed than peripherals * Alternate Clock modes allow On-the-Fly Switching to a Lower Clock Speed for Selective Power Reduction * Extreme Low-Power Current Consumption for Deep Sleep: - WDT: 270 nA @ 3.3V typical - RTCC: 400 nA @ 32 kHz, 3.3V typical - Deep Sleep current: 40 nA, 3.3V typical Universal Serial Bus Features * USB v2.0 On-The-Go (OTG) Compliant * Dual Role Capable; can Act as Either Host or Peripheral * Low-Speed (1.5 Mb/s) and Full-Speed (12 Mb/s) USB Operation in Host mode * Full-Speed USB Operation in Device mode * High-Precision PLL for USB * USB Device mode Operation from FRC Oscillator: - No crystal oscillator required * Supports up to 32 Endpoints (16 bidirectional): - USB module can use any RAM locations on the device as USB endpoint buffers * On-Chip USB Transceiver * Supports Control, Interrupt, Isochronous and Bulk Transfers * On-Chip Pull-up and Pull-Down Resistors Analog Peripherals 2013-2015 Microchip Technology Inc. AES/DES Cryptographic 8K Deep Sleep w/VBAT 64K USB OTG PIC24FJ64GB202 16-Bit Timers 8K EPMP/PSP 8K 64K UART w/IrDA(R) 7816 128K PIC24FJ64GB204 SPI PIC24FJ128GB202 I2CTM 44 Output Compare/PWM 9 8K Input Capture 28 128K CTMU (ch) 12 PIC24FJ128GB204 Device Digital Peripherals Comparators 9 44 Pins 28 Data RAM (bytes) 12 Program Flash (bytes) 10/12-Bit A/D (ch) Memory 3 12 6 6 2 3 4 Y 5 Y Y Y 3 9 6 6 2 3 4 N 5 Y Y Y 3 12 6 6 2 3 4 Y 5 Y Y Y 3 9 6 6 2 3 4 N 5 Y Y Y DS30005009C-page 1 PIC24FJ128GB204 FAMILY Analog Features High-Performance CPU * 10/12-Bit, 12-Channel Analog-to-Digital (A/D) Converter: - Conversion rate of 500 ksps (10-bit), 200 ksps (12-bit) - Conversion available during Sleep and Idle * Three Rail-to-Rail, Enhanced Analog Comparators with Programmable Input/Output Configuration * Three On-Chip Programmable Voltage References * Charge Time Measurement Unit (CTMU): - Used for capacitive touch sensing, up to 12 channels - Time measurement down to 100 ps resolution - Operation in Sleep mode * Modified Harvard Architecture * Up to 16 MIPS Operation @ 32 MHz * 8 MHz Internal Oscillator: - 96 MHz PLL option - Multiple clock divide options - Run-time self-calibration capability for maintaining better than 0.20% accuracy - Fast start-up * 17-Bit x 17-Bit Single-Cycle Hardware Fractional/Integer Multiplier * 32-Bit by 16-Bit Hardware Divider * 16 x 16-Bit Working Register Array * C Compiler Optimized Instruction Set Architecture (ISA) * Two Address Generation Units (AGUs) for Separate Read and Write Addressing of Data Memory Peripheral Features * Up to Five External Interrupt Sources * Peripheral Pin Select (PPS); Allows Independent I/O Mapping of many Peripherals * Five 16-Bit Timers/Counters with Prescaler: - Can be paired as 32-bit timers/counters * Six-Channel DMA supports All Peripheral modules: - Minimizes CPU overhead and increases data throughput * Six Input Capture modules, each with a Dedicated 16-Bit Timer * Six Output Compare/PWM modules, each with a Dedicated 16-Bit Timer * Enhanced Parallel Master/Slave Port (EPMP/EPSP) * Hardware Real-Time Clock/Calendar (RTCC): - Runs in Sleep, Deep Sleep and VBAT modes * Three 3-Wire/4-Wire SPI modules: - Support four Frame modes - Variable FIFO buffer - I2S mode - Variable width from 2-bit to 32-bit * Two I2CTM modules Support Multi-Master/ Slave mode and 7-Bit/10-Bit Addressing * Four UART modules: - Support RS-485, RS-232 and LIN/J2602 - On-chip hardware encoder/decoder for IrDA(R) - Smart Card ISO 7816 support on UART1 and UART2 only: - T = 0 protocol with automatic error handling - T = 1 protocol - Dedicated Guard Time Counter (GTC) - Dedicated Waiting Time Counter (WTC) - Auto-wake-up on Auto-Baud Detect (ABD) - 4-level deep FIFO buffer * Programmable 32-Bit Cyclic Redundancy Check (CRC) Generator * Digital Signal Modulator provides On-Chip FSK and PSK Modulation for a Digital Signal Stream * High-Current Sink/Source (18 mA/18 mA) on All I/O Pins * Configurable Open-Drain Outputs on Digital I/O Pins * 5.5V Tolerant Inputs on Most Pins DS30005009C-page 2 Special Microcontroller Features * Supply Voltage Range of 2.0V to 3.6V * Two On-Chip Voltage Regulators (1.8V and 1.2V) for Regular and Extreme Low-Power Operation * 20,000 Erase/Write Cycle Endurance Flash Program Memory, Typical * Flash Data Retention: 20 Years Minimum * Self-Programmable under Software Control * Programmable Reference Clock Output * In-Circuit Serial ProgrammingTM (ICSPTM) and In-Circuit Emulation (ICE) via 2 Pins * JTAG Programming and Boundary Scan Support * Fail-Safe Clock Monitor (FSCM) Operation: - Detects clock failure and switches to on-chip, Low-Power RC Oscillator * Power-on Reset (POR), Power-up Timer (PWRT) and Oscillator Start-up Timer (OST) * Separate Brown-out Reset (BOR) and Deep Sleep Brown-out Reset (DSBOR) Circuits * Programmable High/Low-Voltage Detect (HLVD) * Flexible Watchdog Timer (WDT) with its Own RC Oscillator for Reliable Operation * Standard and Ultra Low-Power Watchdog Timers (ULPW) for Reliable Operation in Standard and Deep Sleep modes 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY Pin Diagrams 28-Pin SPDIP, SOIC, SSOP(1) MCLR PGD3/CVREF+/VREF+/AN0/C3INC/RP5/ASDA1/CTED1/CN2/RA0 PGD1/AN2/CTCMP/HLVDIN/C2INB/RP0/CN4/RB0 PGC1/AN3/C2INA/RP1/CTED12/CN5/RB1 AN4/C1INB/RP2/SDA2/T5CK/T4CK/CTED13/CN6/RB2 AN5/C1INA/RP3/SCL2/CTED8/CN7/RB3 VSS OSCI/CLKI/C1IND/CN30/RA2 OSCO/CLKO/C2IND/CN29/RA3 SOSCI/RPI4/CN1/RB4 SOSCO/SCLKI/CN0/RA4 VDD TMS/USBID/CN27/RB5 Legend: Note 1: PIC24FJXXXGB202 PGC3/CVREF-/VREF-/AN1/C3IND/RP6/ASCL1/CTED2/CN3/RA1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 VDD VSS AN9/C3INA/RP15/T3CK/T2CK/CTED6/CN11/RB15 CVREF/AN6/C3INB/RP14/RTCC/CTED5/CN12/RB14 AN7/C1INC/REFO/RP13/CTPLS/CN13/RB13 VUSB3V3 PGC2/REFI/RP11/D-/CTED9/CN15/RB11 PGD2/RP10/D+/CTED11/CN16/RB10 VCAP/VDDCORE VBAT TDO/C1INC/C2INC/C3INC/RP9/SDA1/T1CK/CTED4/CN21/RB9 TCK/RP8/SCL1/USBOEN/CTED10/CN22/RB8 TDI/RP7/CTED3/INT0/CN23/RB7 VBUS/RP6/CN24/RB6 RPn represents remappable peripheral pins. Gray shading indicates 5.5V tolerant input pins. 2013-2015 Microchip Technology Inc. DS30005009C-page 3 PIC24FJ128GB204 FAMILY 28-Pin QFN-S(1,2) PGC3/CVREF-/VREF-/AN1/C3IND/RP6/ASCL1/CTED2/CN3/RA1 PGD3\CVREF+/VREF+/AN0/C3INC/RP5/ASDA1/CTED1/CN2/RA0 MCLR VDD VSS AN9/C3INA/RP15/T3CK/T2CK/CTED6/CN11/RB15 CVREF/AN6/C3INB/RP14/RTCC/CTED5/CN12/RB14 Pin Diagrams (Continued) 28 27 26 25 24 23 22 PGD1/AN2/CTCMP/HLVDIN/C2INB/RP0/CN4/RB0 PGC1/AN3/C2INA/RP1/CTED12/CN5/RB1 AN4/C1INB/RP2/SDA2/T5CK/T4CK/CTED13/CN6/RB2 AN5/C1INA/RP3/SCL2/CTED8/CN7/RB3 VSS AN7/C1INC/REFO/RP13/CTPLS/CN13/RB13 VUSB3V3 PGC2/REFI/RP11/D-/CTED9/CN15/RB11 PGD2/RP10/D+/CTED11/CN16/RB10 VCAP/VDDCORE VBAT TDO/C1INC/C2INC/C3INC/RP9/SDA1/T1CK/CTED4/CN21/RB9 SOSCI/RPI4/CN1/RB4 SOSCO/SCLKI/CN0/RA4 VDD TMS/USBID/CN27/RB5 VBUS/RP6/CN24/RB6 TDI/RP7/CTED3/INT0/CN23/RB7 TCK/RP8/SCL1/USBOEN\CTED10/CN22/RB8 OSCI/CLKI/C1IND/CN30/RA2 OSCO/CLKO/C2IND/CN29/RA3 1 21 2 20 3 19 4 PIC24FJXXXGB202 18 5 17 16 6 7 15 8 9 10 11 12 13 14 Legend: Note 1: 2: RPn represents remappable peripheral pins. Gray shading indicates 5.5V tolerant input pins. The back pad on QFN devices should be connected to VSS. DS30005009C-page 4 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY Pin Diagrams (Continued) 44 43 42 41 40 39 38 37 36 35 34 RB8 RB7 RB6 RB5 VDD VSS RC5 RC4 RC3 RA9 RA4 44-Pin TQFP, 44-Pin QFN(1,2,3) PIC24FJXXXGB204 33 32 31 30 29 28 27 26 25 24 23 RB4 RA8 RA3 RA2 VSS VDD RC2 RC1 RC0 RB3 RB2 RA10 RA7 RB14 RB15 AVSS/VSS AVDD MCLR RA0 RA1 RB0 RB1 VUSB3V3 RB13 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 RB9 RC6 RC7 RC8 RC9 VBAT VCAP RB10 RB11 Note 1: 2: 3: TABLE 1: Gray shading indicates 5.5V tolerant input pins. The back pad on QFN devices should be connected to VSS. See Table 1 for complete pinout descriptions. PIC24FJXXXGB204 PIN FUNCTION DESCRIPTIONS Pin Function Pin Function 1 C1INC/C2INC/C3INC/RP9/SDA1/T1CK/CTED4/PMD3/CN21/RB9 2 RP22/PMA1/PMALH/CN18/RC6 23 AN4/C1INB/RP2/SDA2/T5CK/T4CK/CTED13/CN6/PMD2/RB2 24 AN5/C1INA/RP3/SCL2/CTED8/CN7/PMWR/RB3 3 RP23/PMA0/PMALL/CN17/RC7 25 AN10/RP16/PMBE1/CN8/RC0 26 AN11/RP17/CN9/RC1 4 RP24/PMA5/CN20/RC8 5 RP25/CTED7/PMA6/CN19/RC9 27 AN12/RP18/PMACK1/CN10/RC2 6 VBAT 28 VDD 7 VCAP 29 VSS 8 RP10/CTED11/CN16/PGD2/D+/RB10 30 OSCI/C1IND/CLKI/PMCS1/CN30/RA2 9 REFI/RP11/CTED9/CN15/PGC2/D-/RB11 31 OSCO/C2IND/CLKO/CN29/RA3 10 VUSB3V3 32 TDO/PMA8/CN34/RA8 11 AN7/C1INC/REFO/RP13/CTPLS/PMRD/CN13/RB13 33 SOSCI/CN1/RPI4/RB4 12 TMS/PMA2/PMALU/CN36/RA10 34 SOSCO/SCLKI/CN0/RA4 13 TCK/PMA7/CN33/RA7 35 TDI/PMA9/CN35/RA9 14 CVREF/AN6/C3INB/RP14/RTCC/CTED5/CN12/RB14 36 RP19/PMBE0/CN28/RC3 15 AN9/C3INA/RP15/T3CK/T2CK/CTED6/PMA14/CS1/CN11/PMCS/ PMCS1/RB15 37 RP20/PMA4/CN25/RC4 16 AVSS/VSS 38 RP21/PMA3/CN26/RC5 17 AVDD 39 VSS 18 MCLR 40 VDD 19 CVREF+/VREF+/AN0/C3INC/RP5/ASDA1(1)/CTED1/CN2/PMD7/PGD3/RA0 41 CN27/USBID/RB5 20 CVREF-/VREF-/AN1/C3IND/RP6/ASCL1(1)/CTED2/CN3/PGC3/RA1 42 PMD6/CN24/VBUS/RB6 21 AN2/CTCMP/C2INB/RP0/CN4/PGD1/HLVDIN/PMD0/RB0 43 RP7/CTED3/INT0/CN23/PMD5/RB7 22 AN3/C2INA/RP1/CTED12/CN5/PMD1/PGC1/RB1 44 RP8/SCL1/CTED10/PMD4/CN22/USBOEN/RB8 Legend: RPn represents remappable peripheral pins. Note 1: Alternative multiplexing for SDA1 and SCL1 when the I2C1SEL Configuration bit is set. 2013-2015 Microchip Technology Inc. DS30005009C-page 5 PIC24FJ128GB204 FAMILY Table of Contents 1.0 Device Overview .......................................................................................................................................................................... 9 2.0 Guidelines for Getting Started with 16-Bit Microcontrollers ........................................................................................................ 23 3.0 CPU ........................................................................................................................................................................................... 29 4.0 Memory Organization ................................................................................................................................................................. 35 5.0 Direct Memory Access Controller (DMA) ................................................................................................................................... 71 6.0 Flash Program Memory .............................................................................................................................................................. 79 7.0 Resets ........................................................................................................................................................................................ 85 8.0 Interrupt Controller ..................................................................................................................................................................... 91 9.0 Oscillator Configuration ............................................................................................................................................................ 147 10.0 Power-Saving Features ............................................................................................................................................................ 161 11.0 I/O Ports ................................................................................................................................................................................... 173 12.0 Timer1 ...................................................................................................................................................................................... 201 13.0 Timer2/3 and Timer4/5 ............................................................................................................................................................ 205 14.0 Input Capture with Dedicated Timers ....................................................................................................................................... 211 15.0 Output Compare with Dedicated Timers .................................................................................................................................. 217 16.0 Serial Peripheral Interface (SPI)............................................................................................................................................... 227 17.0 Inter-Integrated CircuitTM (I2CTM) .............................................................................................................................................. 245 18.0 Universal Asynchronous Receiver Transmitter (UART) ........................................................................................................... 253 19.0 Universal Serial Bus with On-The-Go Support (USB OTG) ..................................................................................................... 265 20.0 Data Signal Modulator (DSM) .................................................................................................................................................. 299 21.0 Enhanced Parallel Master Port (EPMP) ................................................................................................................................... 303 22.0 Real-Time Clock and Calendar (RTCC) .................................................................................................................................. 315 23.0 Cryptographic Engine ............................................................................................................................................................... 329 24.0 32-Bit Programmable Cyclic Redundancy Check (CRC) Generator ....................................................................................... 345 25.0 12-Bit A/D Converter with Threshold Detect ............................................................................................................................ 351 26.0 Triple Comparator Module........................................................................................................................................................ 371 27.0 Comparator Voltage Reference................................................................................................................................................ 377 28.0 Charge Time Measurement Unit (CTMU) ................................................................................................................................ 379 29.0 High/Low-Voltage Detect (HLVD)............................................................................................................................................. 387 30.0 Special Features ...................................................................................................................................................................... 389 31.0 Development Support............................................................................................................................................................... 403 32.0 Instruction Set Summary .......................................................................................................................................................... 407 33.0 Electrical Characteristics .......................................................................................................................................................... 415 34.0 Packaging Information.............................................................................................................................................................. 447 Appendix A: Revision History............................................................................................................................................................. 465 Index .................................................................................................................................................................................................. 467 The Microchip Web Site ..................................................................................................................................................................... 475 Customer Change Notification Service .............................................................................................................................................. 475 Customer Support .............................................................................................................................................................................. 475 Product Identification System............................................................................................................................................................. 477 DS30005009C-page 6 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY TO OUR VALUED CUSTOMERS It is our intention to provide our valued customers with the best documentation possible to ensure successful use of your Microchip products. To this end, we will continue to improve our publications to better suit your needs. Our publications will be refined and enhanced as new volumes and updates are introduced. If you have any questions or comments regarding this publication, please contact the Marketing Communications Department via E-mail at docerrors@microchip.com. We welcome your feedback. Most Current Data Sheet To obtain the most up-to-date version of this data sheet, please register at our Worldwide Web site at: http://www.microchip.com You can determine the version of a data sheet by examining its literature number found on the bottom outside corner of any page. The last character of the literature number is the version number, (e.g., DS30000000A is version A of document DS30000000). Errata An errata sheet, describing minor operational differences from the data sheet and recommended workarounds, may exist for current devices. As device/documentation issues become known to us, we will publish an errata sheet. The errata will specify the revision of silicon and revision of document to which it applies. To determine if an errata sheet exists for a particular device, please check with one of the following: * Microchip's Worldwide Web site; http://www.microchip.com * Your local Microchip sales office (see last page) When contacting a sales office, please specify which device, revision of silicon and data sheet (include literature number) you are using. Customer Notification System Register on our web site at www.microchip.com to receive the most current information on all of our products. 2013-2015 Microchip Technology Inc. DS30005009C-page 7 PIC24FJ128GB204 FAMILY NOTES: DS30005009C-page 8 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 1.0 DEVICE OVERVIEW This document contains device-specific information for the following devices: * PIC24FJ64GB202 * PIC24FJ128GB202 * PIC24FJ64GB204 * PIC24FJ128GB204 The PIC24FJ128GB204 family expands the capabilities of the PIC24F family by adding a complete selection of Cryptographic Engines, ISO 7816 support and I2S support to its existing features. This combination, along with its ultra low-power features, Direct Memory Access (DMA) for peripherals and USB On-The-Go, make this family the new standard for mixed-signal PIC(R) microcontrollers in one economical and power-saving package. 1.1 1.1.1 Aside from these new features, PIC24FJ128GB204 family devices also include all of the legacy power-saving features of previous PIC24F microcontrollers, such as: * On-the-Fly Clock Switching, allowing the selection of a lower power clock during run time * Doze Mode Operation, for maintaining peripheral clock speed while slowing the CPU clock * Instruction-Based Power-Saving Modes, for quick invocation of Idle and the many Sleep modes 1.1.3 Core Features 16-BIT ARCHITECTURE Central to all PIC24F devices is the 16-bit modified Harvard architecture, first introduced with Microchip's dsPIC(R) Digital Signal Controllers (DSCs). The PIC24F CPU core offers a wide range of enhancements, such as: * 16-bit data and 24-bit address paths with the ability to move information between data and memory spaces * Linear addressing of up to 12 Mbytes (program space) and 32 Kbytes (data) * A 16-element Working register array with built-in software stack support * A 17 x 17 hardware multiplier with support for integer math * Hardware support for 32 by 16-bit division * An instruction set that supports multiple addressing modes and is optimized for high-level languages, such as `C' * Operational performance up to 16 MIPS 1.1.2 Many of these new low-power modes also support the continuous operation of the low-power, on-chip Real-Time Clock/Calendar (RTCC), making it possible for an application to keep time while the device is otherwise asleep. XLP POWER-SAVING TECHNOLOGY The PIC24FJ128GB204 family of devices introduces a greatly expanded range of power-saving operating modes for the ultimate in power conservation. The new modes include: * Retention Sleep with essential circuits being powered from a separate low-voltage regulator * Deep Sleep without RTCC for the lowest possible power consumption under software control * VBAT mode (with or without RTCC) to continue limited operation from a backup battery when VDD is removed 2013-2015 Microchip Technology Inc. OSCILLATOR OPTIONS AND FEATURES All of the devices in the PIC24FJ128GB204 family offer five different oscillator options, allowing users a range of choices in developing application hardware. These include: * Two Crystal modes * Two External Clock (EC) modes * A Phase-Locked Loop (PLL) frequency multiplier, which allows clock speeds of up to 32 MHz * A Fast Internal Oscillator (FRC) - Nominal 8 MHz output with multiple frequency divider options and automatic frequency self-calibration during run time * A separate Low-Power Internal RC Oscillator (LPRC) - 31 kHz nominal for low-power, timing-insensitive applications. The internal oscillator block also provides a stable reference source for the Fail-Safe Clock Monitor (FSCM). This option constantly monitors the main clock source against a reference signal provided by the internal oscillator and enables the controller to switch to the internal oscillator, allowing for continued low-speed operation or a safe application shutdown. 1.1.4 EASY MIGRATION Regardless of the memory size, all devices share the same rich set of peripherals, allowing for a smooth migration path as applications grow and evolve. This extends the ability of applications to grow from the relatively simple, to the powerful and complex, yet still selecting a Microchip device. DS30005009C-page 9 PIC24FJ128GB204 FAMILY 1.2 DMA Controller PIC24FJ128GB204 family devices also add a Direct Memory Access (DMA) Controller to the existing PIC24F architecture. The DMA acts in concert with the CPU, allowing data to move between data memory and peripherals without the intervention of the CPU, increasing data throughput and decreasing execution time overhead. Six independently programmable channels make it possible to service multiple peripherals at virtually the same time, with each channel peripheral performing a different operation. Many types of data transfer operations are supported. 1.3 USB On-The-Go (OTG) USB On-The-Go provides on-chip functionality as a target device compatible with the USB 2.0 standard, as well as limited stand-alone functionality as a USB embedded host. By implementing USB Host Negotiation Protocol (HNP), the module can also dynamically switch between device and host operation, allowing for a much wider range of versatile USB-enabled applications on a microcontroller platform. PIC24FJ128GB204 family devices also incorporate an integrated USB transceiver and precision oscillator, minimizing the required complexity of implementing a complete USB device, embedded host, dual role or On-The-Go application. 1.4 Cryptographic Engine The Cryptographic Engine provides a new set of data security options. Using its own free-standing state machines, the engine can independently perform NIST standard encryption and decryption of data, independently of the CPU. Support for True Random Number Generation (TRNG) and Pseudorandom Number Generation (PRNG); NIST SP800-90 compliant. DS30005009C-page 10 1.5 Other Special Features * Peripheral Pin Select (PPS): The Peripheral Pin Select feature allows most digital peripherals to be mapped over a fixed set of digital I/O pins. Users may independently map the input and/or output of any one of the many digital peripherals to any one of the I/O pins. * Communications: The PIC24FJ128GB204 family incorporates a range of serial communication peripherals to handle a range of application requirements. There are two independent I2CTM modules that support both Master and Slave modes of operation. Devices also have, through the PPS feature, four independent UARTs with built-in IrDA(R) encoders/decoders, ISO 7816 Smart Card support (UART1 and UART2 only) and three SPI modules with I2S and variable data width support. * Analog Features: All members of the PIC24FJ128GB204 family include a 12-bit A/D Converter module and a triple comparator module. The A/D module incorporates a range of new features that allows the converter to assess and make decisions on incoming data, reducing CPU overhead for routine A/D conversions. The comparator module includes three analog comparators that are configurable for a wide range of operations. * CTMU Interface: In addition to their other analog features, members of the PIC24FJ128GB204 family include the CTMU interface module. This provides a convenient method for precision time measurement and pulse generation, and can serve as an interface for capacitive sensors. * Enhanced Parallel Master/Parallel Slave Port: This module allows rapid and transparent access to the microcontroller data bus, and enables the CPU to directly address external data memory. The parallel port can function in Master or Slave mode, accommodating data widths of 4, 8 or 16 bits, and address widths of up to 23 bits in Master modes. * Real-Time Clock and Calendar (RTCC): This module implements a full-featured clock and calendar with alarm functions in hardware, freeing up timer resources and program memory space for use by the core application. * Data Signal Modulator (DSM): The Data Signal Modulator (DSM) allows the user to mix a digital data stream (the "modulator signal") with a carrier signal to produce a modulated output. 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 1.6 Details on Individual Family Members Devices in the PIC24FJ128GB204 family are available in 28-pin and 44-pin packages. The general block diagram for all devices is shown in Figure 1-1. The devices are differentiated from each other in six ways: 1. 2. 3. 4. 5. Flash program memory (64 Kbytes for PIC24FJ64GB2XX devices and 128 Kbytes for PIC24FJ128GB2XX devices). Available I/O pins and ports (21 pins on two ports for 28-pin devices, 35 pins on three ports for 44-pin devices). Available Input Change Notification (ICN) inputs (20 on 28-pin devices and 34 on 44-pin devices). Available remappable pins (14 pins on 28-pin devices and 24 pins on 44-pin devices). Analog input channels for the A/D Converter (12 channels for 44-pin devices and 9 channels for 28-pin devices). 2013-2015 Microchip Technology Inc. All other features for devices in this family are identical. These are summarized in Table 1-1 and Table 1-2. A list of the pin features available on the PIC24FJ128GB204 family devices, sorted by function, is shown in Table 1-3. Note that this table shows the pin location of individual peripheral features and not how they are multiplexed on the same pin. This information is provided in the pinout diagrams in the beginning of the data sheet. Multiplexed features are sorted by the priority given to a feature, with the highest priority peripheral being listed first. DS30005009C-page 11 PIC24FJ128GB204 FAMILY TABLE 1-1: DEVICE FEATURES FOR THE PIC24FJ128GB204 FAMILY: 44-PIN DEVICES Features PIC24FJ64GB204 Operating Frequency Program Memory (bytes) Program Memory (instructions) PIC24FJ128GB204 DC - 32 MHz 64K 128K 22,016 44,032 Data Memory (bytes) 8K Interrupt Sources (soft vectors/ NMI traps) 72 (68/4) I/O Ports Ports A, B, C Total I/O Pins 34 Remappable Pins 24 (23 I/Os, 1 Input only) Timers: 5(1) Total Number (16-bit) 32-Bit (from paired 16-bit timers) 2 Input Capture w/Timer Channels 6(1) Output Compare/PWM Channels 6(1) Input Change Notification Interrupts 34 Serial Communications: UART 4(1) SPI (3-wire/4-wire) 3(1) I2CTM 2 Digital Signal Modulator (DSM) Yes Parallel Communications (EPMP/PSP) Yes JTAG Boundary Scan Yes 12-Bit SAR Analog-to-Digital (A/D) Converter (input channels) 12 Analog Comparators 3 CTMU Interface 12 Channels Resets (and Delays) Core POR, VDD POR, VBAT POR, BOR, RESET Instruction, MCLR, WDT; Illegal Opcode, REPEAT Instruction, Hardware Traps, Configuration Word Mismatch (OST, PLL Lock) Instruction Set 76 Base Instructions, Multiple Addressing Mode Variations Packages 44-Pin TQFP and QFN Cryptographic Engine USB Supports AES with 128, 192 and 256-Bit Key, DES and TDES, True Random and Pseudorandom Number Generator, On-Chip OTP Storage USB Full-Speed and Low-Speed Compatible, On-The-Go (OTG) USB RTCC Note 1: Yes Peripherals are accessible through remappable pins. DS30005009C-page 12 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY TABLE 1-2: DEVICE FEATURES FOR THE PIC24FJ128GB204 FAMILY: 28-PIN DEVICES Features PIC24FJ64GB202 Operating Frequency Program Memory (bytes) Program Memory (instructions) PIC24FJ128GB202 DC - 32 MHz 64K 128K 22,016 44,032 Data Memory (bytes) 8K Interrupt Sources (soft vectors/ NMI traps) 72 (68/4) I/O Ports Ports A, B Total I/O Pins 20 Remappable Pins 15 (14 I/Os, 1 Input only) Timers: 5(1) Total Number (16-bit) 32-Bit (from paired 16-bit timers) 2 Input Capture w/Timer Channels 6(1) Output Compare/PWM Channels 6(1) Input Change Notification Interrupts 20 Serial Communications: UART 4(1) SPI (3-wire/4-wire) 3(1) I2CTM 2 Digital Signal Modulator (DSM) Yes JTAG Boundary Scan Yes 12-Bit SAR Analog-to-Digital (A/D) Converter (input channels) 9 Analog Comparators 3 CTMU Interface 9 Channels Resets (and Delays) Core POR, VDD POR, VBAT POR, BOR, RESET Instruction, MCLR, WDT; Illegal Opcode, REPEAT Instruction, Hardware Traps, Configuration Word Mismatch (OST, PLL Lock) Instruction Set 76 Base Instructions, Multiple Addressing Mode Variations Packages 28-Pin SPDIP, SSOP, SOIC and QFN-S Cryptographic Engine USB Supports AES with 128, 192 and 256-Bit Key, DES and TDES, True Random and Pseudorandom Number Generator, On-Chip OTP Storage USB Full-Speed and Low-Speed Compatible, On-The-Go (OTG) USB RTCC Note 1: Yes Peripherals are accessible through remappable pins. 2013-2015 Microchip Technology Inc. DS30005009C-page 13 PIC24FJ128GB204 FAMILY FIGURE 1-1: PIC24FJ128GB204 FAMILY GENERAL BLOCK DIAGRAM Data Bus Interrupt Controller PORTA(1) 16 (9 I/Os) 16 16 8 Data Latch EDS and Table Data Access Control 23 DMA Controller Data RAM PCL PCH Program Counter Repeat Stack Control Control Logic Logic Address Latch 16 23 16 16 PORTB Read AGU Write AGU Address Latch Program Memory/ Extended Data Space (16 I/Os) Data Latch 16 Address Bus EA MUX 24 16 Inst Latch Inst Register Divide Support OSCO/CLKO OSCI/CLKI REFO Precision Band Gap References Timer1 Timers 2/3 & 4/5(2) 16-Bit ALU 16 EPMP/PSP Watchdog Timer HLVD & BOR Voltage Regulators VBAT (10 I/Os) 16 x 16 W Reg Array Power-on Reset BGBUF1 VCAP PORTC(1) Oscillator Start-up Timer FRC/LPRC Oscillators BGBUF2 17x17 Multiplier Power-up Timer Timing Generation Literal Data DMA Data Bus Instruction Decode and Control Control Signals 16 VDD, VSS RTCC MCLR DSM UARTx with ISO 7816 1/2/3/4(2) 12-Bit A/D Converter Comparators(2) USB OTG IC 1-6(2) Note 1: 2: OC/PWM 1-6(2) ICNs(1) SPIx with I2S 1/2/3(2) I2CTM 1/2 CTMU Cryptographic Engine Not all I/O pins or features are implemented on all device pinout configurations. See Table 1-3 for specific implementations by pin count. These peripheral I/Os are only accessible through remappable pins. DS30005009C-page 14 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY TABLE 1-3: PIC24FJ128GB204 FAMILY PINOUT DESCRIPTION Pin Number/Grid Locator Pin Function 28-Pin I/O 28-Pin 44-Pin SPDIP/SOIC/ QFN-S TQFP/QFN SSOP Input Buffer AN0 2 27 19 I ANA AN1 3 28 20 I ANA AN2 4 1 21 I ANA AN3 5 2 22 I ANA AN4 6 3 23 I ANA AN5 7 4 24 I ANA AN6 25 22 14 I ANA AN7 24 21 11 I ANA AN9 26 23 15 I ANA AN10 -- -- 25 I ANA AN11 -- -- 26 I ANA AN12 -- -- 27 I ANA Description 12-Bit SAR A/D Converter Inputs. ASCL1 3 28 20 -- -- ASDA1 2 27 19 -- -- AVDD -- -- 17 P ANA Positive Supply for Analog modules. AVSS -- 24 16 P ANA Ground Reference for Analog modules. C1INA 7 4 24 I ANA Comparator 1 Input A. C1INB 6 3 23 I ANA Comparator 1 Input B. C1INC 24 15 1 I ANA Comparator 1 Input C. C1IND 9 6 30 I ANA Comparator 1 Input D. C2INA 5 2 22 I ANA Comparator 2 Input A. C2INB 4 1 21 I ANA Comparator 2 Input B. C2INC 18 15 1 I ANA Comparator 2 Input C. C2IND 10 7 31 I ANA Comparator 2 Input D. C3INA 26 23 15 I ANA Comparator 3 Input A. C3INB 25 22 14 I ANA Comparator 3 Input B. C3INC 2 15 1 I ANA Comparator 3 Input C. C3IND 3 28 20 I ANA Comparator 3 Input D. CLKI 9 6 30 I ANA Main Clock Input Connection. CLKO 10 7 31 O -- Legend: ST = Schmitt Trigger input ANA = Analog input I2C = ST with I2CTM or SMBus levels 2013-2015 Microchip Technology Inc. System Clock Output. TTL = TTL compatible input O = Output I = Input P = Power DS30005009C-page 15 PIC24FJ128GB204 FAMILY TABLE 1-3: PIC24FJ128GB204 FAMILY PINOUT DESCRIPTION (CONTINUED) Pin Number/Grid Locator Pin Function 28-Pin I/O 28-Pin 44-Pin SPDIP/SOIC/ QFN-S TQFP/QFN SSOP Input Buffer CN0 12 9 34 -- -- CN1 11 8 33 -- -- CN2 2 27 19 -- -- CN3 3 28 20 -- -- CN4 4 1 21 -- -- CN5 5 2 22 -- -- CN6 6 3 23 -- -- CN7 7 4 24 -- -- CN8 -- -- 25 -- -- CN9 -- -- 26 -- -- CN10 -- -- 27 -- -- CN11 26 23 15 -- -- CN12 25 22 14 -- -- CN13 24 21 11 -- -- CN15 22 19 9 -- -- CN16 21 18 8 -- -- CN17 -- -- 3 -- -- CN18 -- -- 2 -- -- CN19 -- -- 5 -- -- CN20 -- -- 4 -- -- CN21 18 15 1 -- -- CN22 17 14 44 -- -- CN23 16 13 43 -- -- CN24 15 12 42 -- -- CN25 -- -- 37 -- -- CN26 -- -- 38 -- -- CN27 14 11 41 -- -- CN28 -- -- 36 -- -- CN29 10 7 31 -- -- CN30 9 6 30 -- -- CN33 -- -- 13 -- -- CN34 -- -- 32 -- -- CN35 -- -- 35 -- -- CN36 -- -- 12 -- -- CTCMP 4 1 21 I ANA Legend: ST = Schmitt Trigger input ANA = Analog input I2C = ST with I2CTM or SMBus levels DS30005009C-page 16 Description Interrupt-on-Change Inputs. CTMU Comparator 2 Input (Pulse mode). TTL = TTL compatible input O = Output I = Input P = Power 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY TABLE 1-3: PIC24FJ128GB204 FAMILY PINOUT DESCRIPTION (CONTINUED) Pin Number/Grid Locator Pin Function 28-Pin I/O 28-Pin 44-Pin SPDIP/SOIC/ QFN-S TQFP/QFN SSOP Input Buffer CTED1 2 27 19 I ANA CTED2 3 28 20 I ANA CTED3 16 13 43 I ANA CTED4 18 15 1 I ANA CTED5 25 22 14 I ANA CTED6 26 23 15 I ANA CTED7 -- -- 5 I ANA CTED8 7 4 24 I ANA CTED9 22 19 9 I ANA CTED10 17 14 44 I ANA CTED11 21 18 8 I ANA CTED12 5 2 22 I ANA CTED13 6 3 23 I ANA CTPLS 24 21 11 O -- Description CTMU External Edge Inputs. CTMU Pulse Output. CVREF 25 22 14 O ANA CVREF+ 2 27 19 I ANA Comparator Voltage Reference (high) Input. CVREF- 3 28 20 I ANA Comparator Voltage Reference (low) Input. D+ 21 18 8 I/O -- USB Differential Plus Line (internal transceiver). D- 22 19 9 I/O -- USB Differential Minus Line (internal transceiver). INT0 16 13 43 I ST External Interrupt Input 0. HLVDIN 4 1 21 I ANA MCLR 1 26 18 I ST Comparator Voltage Reference Output. High/Low-Voltage Detect Input. Master Clear (device Reset) Input. This line is brought low to cause a Reset. OSCI 9 6 30 I ANA OSCO 10 7 31 O -- Main Oscillator Output Connection. In-Circuit Debugger/Emulator/ICSPTM Programming Clock. PGC1 5 2 22 I/O ST PGC2 22 19 9 I/O ST PGC3 3 28 20 I/O ST PGD1 4 1 21 I/O ST PGD2 21 18 8 I/O ST PGD3 2 27 19 I/O ST Legend: ST = Schmitt Trigger input ANA = Analog input I2C = ST with I2CTM or SMBus levels 2013-2015 Microchip Technology Inc. Main Oscillator Input Connection. TTL = TTL compatible input O = Output I = Input P = Power DS30005009C-page 17 PIC24FJ128GB204 FAMILY TABLE 1-3: PIC24FJ128GB204 FAMILY PINOUT DESCRIPTION (CONTINUED) Pin Number/Grid Locator Pin Function 28-Pin I/O 28-Pin 44-Pin SPDIP/SOIC/ QFN-S TQFP/QFN SSOP Input Buffer PMA0/PMALL -- -- 3 O -- PMA1/PMALH -- -- 2 O -- PMA14/PMCS/ PMCS1 -- -- 15 O -- PMA2/PMALU -- -- 12 O -- PMA3 -- -- 38 O -- PMA4 -- -- 37 O -- PMA5 -- -- 4 O -- PMA6 -- -- 5 O -- PMA7 -- -- 13 O -- PMA8 -- -- 32 O -- PMA9 -- -- 35 O -- Description Parallel Master Port Address. PMACK1 -- -- 27 I PMBE0 -- -- 36 O ST/TTL Parallel Master Port Acknowledge Input 1. -- Parallel Master Port Byte Enable 0 Strobe. PMBE1 -- -- 25 O -- Parallel Master Port Byte Enable 1 Strobe. PMCS1 -- -- 30 I/O ST/TTL Parallel Master Port Chip Select 1 Strobe. PMD0 -- -- 21 PMD1 -- -- 22 PMD2 -- -- 23 I/O ST/TTL Parallel Master Port Data (Demultiplexed I/O ST/TTL Master mode) or Address/Data (Multiplexed Master modes). I/O ST/TTL PMD3 -- -- 1 I/O ST/TTL PMD4 -- -- 44 I/O ST/TTL PMD5 -- -- 43 I/O ST/TTL PMD6 -- -- 20 I/O ST/TTL PMD7 -- -- 19 I/O ST/TTL PMRD -- -- 11 O -- Parallel Master Port Read Strobe. PMWR -- -- 24 O -- Parallel Master Port Write Strobe. RA0 2 27 19 I/O ST PORTA Digital I/Os. RA1 3 28 20 I/O ST RA2 9 6 30 I/O ST RA3 10 7 31 I/O ST RA4 12 9 34 I ST RA7 -- -- 13 I/O ST RA8 -- -- 32 I/O ST RA9 -- -- 35 I/O ST RA10 -- -- 12 I/O ST Legend: ST = Schmitt Trigger input ANA = Analog input I2C = ST with I2CTM or SMBus levels DS30005009C-page 18 TTL = TTL compatible input O = Output I = Input P = Power 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY TABLE 1-3: PIC24FJ128GB204 FAMILY PINOUT DESCRIPTION (CONTINUED) Pin Number/Grid Locator Pin Function 28-Pin I/O 28-Pin 44-Pin SPDIP/SOIC/ QFN-S TQFP/QFN SSOP Input Buffer RB0 4 1 21 I/O ST RB1 5 2 22 I/O ST RB2 6 3 23 I/O ST RB3 7 4 24 I/O ST RB4 11 8 33 I ST RB5 14 11 41 I/O ST RB6 15 12 42 I/O ST RB7 16 13 43 I/O ST RB8 17 14 44 I/O ST RB9 18 15 1 I/O ST RB10 21 18 8 I/O ST RB11 22 19 9 I/O ST RB13 24 21 11 I/O ST RB14 25 22 14 I/O ST RB15 26 23 15 I/O ST RC0 -- -- 25 I/O ST RC1 -- -- 26 I/O ST RC2 -- -- 27 I/O ST RC3 -- -- 36 I/O ST RC4 -- -- 37 I/O ST RC5 -- -- 38 I/O ST RC6 -- -- 2 I/O ST RC7 -- -- 3 I/O ST RC8 -- -- 4 I/O ST Description PORTB Digital I/Os. PORTC Digital I/Os. RC9 -- -- 5 I/O ST REFI 22 19 9 -- -- Reference Clock Input. REFO 24 21 11 -- -- Reference Clock Output. Legend: ST = Schmitt Trigger input ANA = Analog input I2C = ST with I2CTM or SMBus levels 2013-2015 Microchip Technology Inc. TTL = TTL compatible input O = Output I = Input P = Power DS30005009C-page 19 PIC24FJ128GB204 FAMILY TABLE 1-3: PIC24FJ128GB204 FAMILY PINOUT DESCRIPTION (CONTINUED) Pin Number/Grid Locator Pin Function 28-Pin I/O 28-Pin 44-Pin SPDIP/SOIC/ QFN-S TQFP/QFN SSOP Input Buffer RP0 4 1 21 I/O ST RP1 5 2 22 I/O ST RP2 6 3 23 I/O ST RP3 7 4 24 I/O ST RP5 2 27 19 I/O ST RP6 3,15 28 20 I/O ST RP7 16 13 43 I/O ST RP8 17 14 44 I/O ST RP9 18 15 1 I/O ST RP10 21 18 8 I/O ST RP11 22 19 9 I/O ST RP13 24 21 11 I/O ST RP14 25 22 14 I/O ST RP15 26 23 15 I/O ST RP16 -- -- 25 I/O ST RP17 -- -- 26 I/O ST RP18 -- -- 27 I/O ST RP19 -- -- 36 I/O ST RP20 -- -- 37 I/O ST RP21 -- -- 38 I/O ST RP22 -- -- 2 I/O ST RP23 -- -- 3 I/O ST RP24 -- -- 4 I/O ST RP25 -- -- 5 I/O ST Description Remappable Peripheral (input or output). RPI4 11 8 33 I ST Remappable Peripheral (input). RTCC 25 22 14 O -- Real-Time Clock Alarm/Seconds Pulse Output. SCL1 17 14 44 I/O I2C I2C1 Synchronous Serial Clock Input/Output. SCL2 7 4 24 I/O I2C I2C2 Synchronous Serial Clock Input/Output. SCLKI 12 9 34 I -- Secondary Oscillator Digital Clock Input. SDA1 18 15 1 I/O I2C I2C1 Data Input/Output. SDA2 6 3 23 I/O I2C I2C2 Data Input/Output. SOSCI 11 8 33 I ANA Secondary Oscillator/Timer1 Clock Input. SOSCO 12 9 34 O ANA Secondary Oscillator/Timer1 Clock Output. Legend: ST = Schmitt Trigger input ANA = Analog input I2C = ST with I2CTM or SMBus levels DS30005009C-page 20 TTL = TTL compatible input O = Output I = Input P = Power 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY TABLE 1-3: PIC24FJ128GB204 FAMILY PINOUT DESCRIPTION (CONTINUED) Pin Number/Grid Locator Pin Function 28-Pin I/O 28-Pin 44-Pin SPDIP/SOIC/ QFN-S TQFP/QFN SSOP Input Buffer Description T1CK 18 15 1 I ST Timer1 Clock. T2CK 26 23 15 I ST Timer2 Clock. T3CK 26 23 15 I ST Timer3 Clock. T4CK 6 3 23 I ST Timer4 Clock. T5CK 6 3 23 I ST Timer5 Clock. TCK 17 14 13 I ST JTAG Test Clock/Programming Clock Input. TDI 16 13 35 I ST JTAG Test Data/Programming Data Input. TDO 18 15 32 O -- JTAG Test Data Output. TMS 14 11 12 I -- JTAG Test Mode Select Input. USBID 14 11 41 I ST USB OTG ID (OTG mode only). USBOEN 17 14 44 O -- USB Output Enable Control (for external transceiver). VBAT 19 16 6 P -- Backup Battery (B+) Input (1.2V nominal). VBUS 15 12 42 P -- USB Voltage, Host mode (5V). VCAP 20 17 7 P -- External Filter Capacitor Connection. VDD 13,28 25 28,40 P -- Positive Supply for Peripheral Digital Logic and I/O Pins. VDDCORE 20 17 7 -- -- Microcontroller Core Supply Voltage. VREF+ 2 27 19 I ANA A/D Reference Voltage Input (+). VREF- 3 28 20 I ANA A/D Reference Voltage Input (-). 8,27 5,24 29,39 P -- Ground Reference for Logic and I/O Pins. 23 20 10 P -- USB Transceiver Power Input Voltage (3.3V nominal). VSS VUSB3V3 Legend: ST = Schmitt Trigger input ANA = Analog input I2C = ST with I2CTM or SMBus levels 2013-2015 Microchip Technology Inc. TTL = TTL compatible input O = Output I = Input P = Power DS30005009C-page 21 PIC24FJ128GB204 FAMILY NOTES: DS30005009C-page 22 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY * All VDD and VSS pins (see Section 2.2 "Power Supply Pins") * All AVDD and AVSS pins, regardless of whether or not the analog device features are used (see Section 2.2 "Power Supply Pins") * MCLR pin (see Section 2.3 "Master Clear (MCLR) Pin") * ENVREG/DISVREG and VCAP/VDDCORE pins (see Section 2.4 "Voltage Regulator Pins (ENVREG/DISVREG and VCAP/VDDCORE)") R1 R2 VCAP/VDDCORE C1 C6(2) VSS VDD VDD VSS C3(2) C4(2) C5(2) Key (all values are recommendations): * PGECx/PGEDx pins used for In-Circuit Serial ProgrammingTM (ICSPTM) and debugging purposes (see Section 2.5 "ICSP Pins") * OSCI and OSCO pins when an external oscillator source is used (see Section 2.6 "External Oscillator Pins") R1: 10 k Note: The AVDD and AVSS pins must always be connected, regardless of whether any of the analog modules are being used. C7 PIC24FJXXXX C1 through C6: 0.1 F, 20V ceramic * VREF+/VREF- pins used when external voltage reference for analog modules is implemented (1) (1) (EN/DIS)VREG MCLR These pins must also be connected if they are being used in the end application: Additionally, the following pins may be required: VSS VDD VSS The following pins must always be connected: C2(2) VDD Getting started with the PIC24FJ128GB204 family of 16-bit microcontrollers requires attention to a minimal set of device pin connections before proceeding with development. RECOMMENDED MINIMUM CONNECTIONS VDD Basic Connection Requirements FIGURE 2-1: AVSS 2.1 GUIDELINES FOR GETTING STARTED WITH 16-BIT MICROCONTROLLERS AVDD 2.0 C7: 10 F, 6.3V or greater, tantalum or ceramic R2: 100 to 470 Note 1: 2: See Section 2.4 "Voltage Regulator Pins (ENVREG/DISVREG and VCAP/VDDCORE)" for the explanation of the ENVREG/DISVREG pin connections. The example shown is for a PIC24F device with five VDD/VSS and AVDD/AVSS pairs. Other devices may have more or less pairs; adjust the number of decoupling capacitors appropriately. The minimum mandatory connections are shown in Figure 2-1. 2013-2015 Microchip Technology Inc. DS30005009C-page 23 PIC24FJ128GB204 FAMILY 2.2 2.2.1 Power Supply Pins DECOUPLING CAPACITORS The use of decoupling capacitors on every pair of power supply pins, such as VDD, VSS, AVDD and AVSS is required. Consider the following criteria when using decoupling capacitors: * Value and type of capacitor: A 0.1 F (100 nF), 10-20V capacitor is recommended. The capacitor should be a low-ESR device with a resonance frequency in the range of 200 MHz and higher. Ceramic capacitors are recommended. * Placement on the printed circuit board: The decoupling capacitors should be placed as close to the pins as possible. It is recommended to place the capacitors on the same side of the board as the device. If space is constricted, the capacitor can be placed on another layer on the PCB using a via; however, ensure that the trace length from the pin to the capacitor is no greater than 0.25 inch (6 mm). * Handling high-frequency noise: If the board is experiencing high-frequency noise (upward of tens of MHz), add a second ceramic type capacitor in parallel to the above described decoupling capacitor. The value of the second capacitor can be in the range of 0.01 F to 0.001 F. Place this second capacitor next to each primary decoupling capacitor. In high-speed circuit designs, consider implementing a decade pair of capacitances as close to the power and ground pins as possible (e.g., 0.1 F in parallel with 0.001 F). * Maximizing performance: On the board layout from the power supply circuit, run the power and return traces to the decoupling capacitors first, and then to the device pins. This ensures that the decoupling capacitors are first in the power chain. Equally important is to keep the trace length between the capacitor and the power pins to a minimum, thereby reducing PCB trace inductance. 2.2.2 TANK CAPACITORS On boards with power traces running longer than six inches in length, it is suggested to use a tank capacitor for integrated circuits including microcontrollers to supply a local power source. The value of the tank capacitor should be determined based on the trace resistance that connects the power supply source to the device, and the maximum current drawn by the device in the application. In other words, select the tank capacitor so that it meets the acceptable voltage sag at the device. Typical values range from 4.7 F to 47 F. DS30005009C-page 24 2.3 Master Clear (MCLR) Pin The MCLR pin provides two specific device functions: device Reset, and device programming and debugging. If programming and debugging are not required in the end application, a direct connection to VDD may be all that is required. The addition of other components, to help increase the application's resistance to spurious Resets from voltage sags, may be beneficial. A typical configuration is shown in Figure 2-1. Other circuit designs may be implemented, depending on the application's requirements. During programming and debugging, the resistance and capacitance that can be added to the pin must be considered. Device programmers and debuggers drive the MCLR pin. Consequently, specific voltage levels (VIH and VIL) and fast signal transitions must not be adversely affected. Therefore, specific values of R1 and C1 will need to be adjusted based on the application and PCB requirements. For example, it is recommended that the capacitor, C1, be isolated from the MCLR pin during programming and debugging operations by using a jumper (Figure 2-2). The jumper is replaced for normal run-time operations. Any components associated with the MCLR pin should be placed within 0.25 inch (6 mm) of the pin. FIGURE 2-2: EXAMPLE OF MCLR PIN CONNECTIONS VDD R1 R2 MCLR JP PIC24FXXXX C1 Note 1: R1 10 k is recommended. A suggested starting value is 10 k. Ensure that the MCLR pin VIH and VIL specifications are met. 2: R2 470 will limit any current flowing into MCLR from the external capacitor, C, in the event of MCLR pin breakdown due to Electrostatic Discharge (ESD) or Electrical Overstress (EOS). Ensure that the MCLR pin VIH and VIL specifications are met. 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 2.4 Voltage Regulator Pins (ENVREG/DISVREG and VCAP/VDDCORE) Note: Designers may use Figure 2-3 to evaluate ESR equivalence of candidate devices. This section applies only to PIC24FJ devices with an on-chip voltage regulator. The on-chip voltage regulator enable/disable pin (ENVREG or DISVREG, depending on the device family) must always be connected directly to either a supply voltage or to ground. The particular connection is determined by whether or not the regulator is to be used: * For ENVREG, tie to VDD to enable the regulator, or to ground to disable the regulator * For DISVREG, tie to ground to enable the regulator or to VDD to disable the regulator The placement of this capacitor should be close to VCAP/VDDCORE. It is recommended that the trace length not exceed 0.25 inch (6 mm). Refer to Section 33.0 "Electrical Characteristics" for additional information. When the regulator is disabled, the VCAP/VDDCORE pin must be tied to a voltage supply at the VDDCORE level. Refer to Section 33.0 "Electrical Characteristics" for information on VDD and VDDCORE. FIGURE 2-3: FREQUENCY vs. ESR PERFORMANCE FOR SUGGESTED VCAP 10 Refer to Section 30.2 "On-Chip Voltage Regulator" for details on connecting and using the on-chip regulator. ESR () 1 When the regulator is enabled, a low-ESR (< 5) capacitor is required on the VCAP/VDDCORE pin to stabilize the voltage regulator output voltage. The VCAP/VDDCORE pin must not be connected to VDD and must use a capacitor of 10 F connected to ground. The type can be ceramic or tantalum. Suitable examples of capacitors are shown in Table 2-1. Capacitors with equivalent specification can be used. 0.1 0.01 0.001 0.01 0.1 1 10 100 Frequency (MHz) 1000 10,000 Note: Typical data measurement at +25C, 0V DC bias. . TABLE 2-1: SUITABLE CAPACITOR EQUIVALENTS Make Part # Nominal Capacitance Base Tolerance Rated Voltage Temp. Range TDK C3216X7R1C106K 10 F 10% 16V -55 to +125C TDK C3216X5R1C106K 10 F 10% 16V -55 to +85C Panasonic ECJ-3YX1C106K 10 F 10% 16V -55 to +125C Panasonic ECJ-4YB1C106K 10 F 10% 16V -55 to +85C Murata GRM32DR71C106KA01L 10 F 10% 16V -55 to +125C Murata GRM31CR61C106KC31L 10 F 10% 16V -55 to +85C 2013-2015 Microchip Technology Inc. DS30005009C-page 25 PIC24FJ128GB204 FAMILY CONSIDERATIONS FOR CERAMIC CAPACITORS In recent years, large value, low-voltage, surface-mount ceramic capacitors have become very cost effective in sizes up to a few tens of microfarad. The low-ESR, small physical size and other properties make ceramic capacitors very attractive in many types of applications. Ceramic capacitors are suitable for use with the internal voltage regulator of this microcontroller. However, some care is needed in selecting the capacitor to ensure that it maintains sufficient capacitance over the intended operating range of the application. Typical low-cost, 10 F ceramic capacitors are available in X5R, X7R and Y5V dielectric ratings (other types are also available, but are less common). The initial tolerance specifications for these types of capacitors are often specified as 10% to 20% (X5R and X7R), or -20%/+80% (Y5V). However, the effective capacitance that these capacitors provide in an application circuit will also vary based on additional factors, such as the applied DC bias voltage and the temperature. The total in-circuit tolerance is, therefore, much wider than the initial tolerance specification. The X5R and X7R capacitors typically exhibit satisfactory temperature stability (ex: 15% over a wide temperature range, but consult the manufacturer's data sheets for exact specifications). However, Y5V capacitors typically have extreme temperature tolerance specifications of +22%/-82%. Due to the extreme temperature tolerance, a 10 F nominal rated Y5V type capacitor may not deliver enough total capacitance to meet minimum internal voltage regulator stability and transient response requirements. Therefore, Y5V capacitors are not recommended for use with the internal regulator if the application must operate over a wide temperature range. In addition to temperature tolerance, the effective capacitance of large value ceramic capacitors can vary substantially, based on the amount of DC voltage applied to the capacitor. This effect can be very significant, but is often overlooked or is not always documented. Typical DC bias voltage vs. capacitance graph for X7R type capacitors is shown in Figure 2-4. FIGURE 2-4: Capacitance Change (%) 2.4.1 DC BIAS VOLTAGE vs. CAPACITANCE CHARACTERISTICS 10 0 -10 16V Capacitor -20 -30 -40 10V Capacitor -50 -60 -70 6.3V Capacitor -80 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 DC Bias Voltage (VDC) When selecting a ceramic capacitor to be used with the internal voltage regulator, it is suggested to select a high-voltage rating, so that the operating voltage is a small percentage of the maximum rated capacitor voltage. For example, choose a ceramic capacitor rated at 16V for the 2.5V or 1.8V core voltage. Suggested capacitors are shown in Table 2-1. 2.5 ICSP Pins The PGECx and PGEDx pins are used for In-Circuit Serial Programming (ICSP) and debugging purposes. It is recommended to keep the trace length between the ICSP connector and the ICSP pins on the device as short as possible. If the ICSP connector is expected to experience an ESD event, a series resistor is recommended, with the value in the range of a few tens of ohms, not to exceed 100. Pull-up resistors, series diodes and capacitors on the PGECx and PGEDx pins are not recommended as they will interfere with the programmer/debugger communications to the device. If such discrete components are an application requirement, they should be removed from the circuit during programming and debugging. Alternatively, refer to the AC/DC characteristics and timing requirements information in the respective device Flash programming specification for information on capacitive loading limits and pin input voltage high (VIH) and input low (VIL) requirements. For device emulation, ensure that the "Communication Channel Select" (i.e., PGECx/PGEDx pins), programmed into the device, matches the physical connections for the ICSP to the Microchip debugger/emulator tool. For more information on available Microchip development tools connection requirements, refer to Section 31.0 "Development Support". DS30005009C-page 26 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 2.6 External Oscillator Pins FIGURE 2-5: Many microcontrollers have options for at least two oscillators: a high-frequency Primary Oscillator and a low-frequency Secondary Oscillator (refer to Section 9.0 "Oscillator Configuration" for details). The oscillator circuit should be placed on the same side of the board as the device. Place the oscillator circuit close to the respective oscillator pins with no more than 0.5 inch (12 mm) between the circuit components and the pins. The load capacitors should be placed next to the oscillator itself, on the same side of the board. Use a grounded copper pour around the oscillator circuit to isolate it from surrounding circuits. The grounded copper pour should be routed directly to the MCU ground. Do not run any signal traces or power traces inside the ground pour. Also, if using a two-sided board, avoid any traces on the other side of the board where the crystal is placed. Layout suggestions are shown in Figure 2-5. In-line packages may be handled with a single-sided layout that completely encompasses the oscillator pins. With fine-pitch packages, it is not always possible to completely surround the pins and components. A suitable solution is to tie the broken guard sections to a mirrored ground layer. In all cases, the guard trace(s) must be returned to ground. In planning the application's routing and I/O assignments, ensure that adjacent port pins, and other signals in close proximity to the oscillator, are benign (i.e., free of high frequencies, short rise and fall times and other similar noise). For additional information and design guidance on oscillator circuits, please refer to these Microchip Application Notes, available at the corporate web site (www.microchip.com): * AN826, "Crystal Oscillator Basics and Crystal Selection for rfPICTM and PICmicro(R) Devices" * AN849, "Basic PICmicro(R) Oscillator Design" * AN943, "Practical PICmicro(R) Oscillator Analysis and Design" * AN949, "Making Your Oscillator Work" SUGGESTED PLACEMENT OF THE OSCILLATOR CIRCUIT Single-Sided and In-Line Layouts: Copper Pour (tied to ground) Primary Oscillator Crystal DEVICE PINS Primary Oscillator OSCI C1 OSCO GND C2 SOSCO SOSC I Secondary Oscillator Crystal Sec Oscillator: C1 Sec Oscillator: C2 Fine-Pitch (Dual-Sided) Layouts: Top Layer Copper Pour (tied to ground) Bottom Layer Copper Pour (tied to ground) OSCO C2 Oscillator Crystal GND C1 OSCI DEVICE PINS 2013-2015 Microchip Technology Inc. DS30005009C-page 27 PIC24FJ128GB204 FAMILY 2.7 Configuration of Analog and Digital Pins During ICSP Operations If an ICSP compliant emulator is selected as a debugger, it automatically initializes all of the A/D input pins (ANx) as "digital" pins. Depending on the particular device, this is done by setting all bits in the ADxPCFG register(s) or clearing all bits in the ANSx registers. All PIC24F devices will have either one or more ADxPCFG registers, or several ANSx registers (one for each port); no device will have both. Refer to Section 11.2 "Configuring Analog Port Pins (ANSx)" for more specific information. The bits in these registers that correspond to the A/D pins that initialized the emulator must not be changed by the user application firmware; otherwise, communication errors will result between the debugger and the device. If your application needs to use certain A/D pins as analog input pins during the debug session, the user application must modify the appropriate bits during initialization of the A/D module, as follows: * For devices with an ADxPCFG register, clear the bits corresponding to the pin(s) to be configured as analog. Do not change any other bits, particularly those corresponding to the PGECx/PGEDx pair, at any time. * For devices with ANSx registers, set the bits corresponding to the pin(s) to be configured as analog. Do not change any other bits, particularly those corresponding to the PGECx/PGEDx pair, at any time. When a Microchip debugger/emulator is used as a programmer, the user application firmware must correctly configure the ADxPCFG or ANSx registers. Automatic initialization of this register is only done during debugger operation. Failure to correctly configure the register(s) will result in all A/D pins being recognized as analog input pins, resulting in the port value being read as a logic `0', which may affect user application functionality. 2.8 Unused I/Os Unused I/O pins should be configured as outputs and driven to a logic low state. Alternatively, connect a 1 k to 10 k resistor to VSS on unused pins and drive the output to logic low. DS30005009C-page 28 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 3.0 Note: CPU This data sheet summarizes the features of this group of PIC24F devices. It is not intended to be a comprehensive reference source. For more information on the CPU, refer to the "dsPIC33/PIC24 Family Reference Manual", "CPU with Extended Data Space (EDS)" (DS39732). The information in this data sheet supersedes the information in the FRM. The PIC24F CPU has a 16-bit (data) modified Harvard architecture with an enhanced instruction set and a 24-bit instruction word with a variable length opcode field. The Program Counter (PC) is 23 bits wide and addresses up to 4M instructions of user program memory space. A single-cycle instruction prefetch mechanism is used to help maintain throughput and provides predictable execution. All instructions execute in a single cycle, with the exception of instructions that change the program flow, the double-word move (MOV.D) instruction and the table instructions. Overhead-free program loop constructs are supported using the REPEAT instructions, which are interruptible at any point. PIC24F devices have sixteen, 16-bit Working registers in the programmer's model. Each of the Working registers can act as a Data, Address or Address Offset register. The 16th Working register (W15) operates as a Software Stack Pointer (SSP) for interrupts and calls. The lower 32 Kbytes of the Data Space (DS) can be accessed linearly. The upper 32 Kbytes of the Data Space are referred to as Extended Data Space to which the extended data RAM, EPMP memory space or program memory can be mapped. The Instruction Set Architecture (ISA) has been significantly enhanced beyond that of the PIC18, but maintains an acceptable level of backward compatibility. All PIC18 instructions and addressing modes are supported, either directly, or through simple macros. Many of the ISA enhancements have been driven by compiler efficiency needs. 2013-2015 Microchip Technology Inc. The core supports Inherent (no operand), Relative, Literal and Memory Direct Addressing modes, along with three groups of addressing modes. All modes support Register Direct and various Register Indirect modes. Each group offers up to seven addressing modes. Instructions are associated with predefined addressing modes depending upon their functional requirements. For most instructions, the core is capable of executing a data (or program data) memory read, a Working register (data) read, a data memory write and a program (instruction) memory read per instruction cycle. As a result, three parameter instructions can be supported, allowing trinary operations (that is, A + B = C) to be executed in a single cycle. A high-speed, 17-bit x 17-bit multiplier has been included to significantly enhance the core arithmetic capability and throughput. The multiplier supports Signed, Unsigned and Mixed mode, 16-bit x 16-bit or 8-bit x 8-bit, integer multiplication. All multiply instructions execute in a single cycle. The 16-bit ALU has been enhanced with integer divide assist hardware that supports an iterative non-restoring divide algorithm. It operates in conjunction with the REPEAT instruction looping mechanism and a selection of iterative divide instructions to support 32-bit (or 16-bit), divided by 16-bit, integer signed and unsigned division. All divide operations require 19 cycles to complete but are interruptible at any cycle boundary. The PIC24F has a vectored exception scheme with up to 8 sources of non-maskable traps and up to 118 interrupt sources. Each interrupt source can be assigned to one of seven priority levels. A block diagram of the CPU is shown in Figure 3-1. 3.1 Programmer's Model The programmer's model for the PIC24F is shown in Figure 3-2. All registers in the programmer's model are memory-mapped and can be manipulated directly by instructions. A description of each register is provided in Table 3-1. All registers associated with the programmer's model are memory-mapped. DS30005009C-page 29 PIC24FJ128GB204 FAMILY FIGURE 3-1: PIC24F CPU CORE BLOCK DIAGRAM EDS and Table Data Access Control Block Data Bus Interrupt Controller 16 8 16 16 Data Latch 23 Data RAM Up to 0x7FFF PCH PCL Program Counter Loop Stack Control Control Logic Logic 23 16 Address Latch 23 16 RAGU WAGU Address Latch Program Memory/ Extended Data Space EA MUX Address Bus Data Latch ROM Latch 24 Instruction Decode and Control Instruction Reg Control Signals to Various Blocks Hardware Multiplier Divide Support 16 Literal Data 16 16 x 16 W Register Array 16 16-Bit ALU 16 To Peripheral Modules TABLE 3-1: CPU CORE REGISTERS Register(s) Name W0 through W15 PC SR SPLIM TBLPAG RCOUNT CORCON DISICNT DSRPAG DSWPAG DS30005009C-page 30 Description Working Register Array 23-Bit Program Counter ALU STATUS Register Stack Pointer Limit Value Register Table Memory Page Address Register REPEAT Loop Counter Register CPU Control Register Disable Interrupt Count Register Data Space Read Page Register Data Space Write Page Register 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY FIGURE 3-2: PROGRAMMER'S MODEL 15 Divider Working Registers 0 W0 (WREG) W1 W2 Multiplier Registers W3 W4 W5 W6 W7 Working/Address Registers W8 W9 W10 W11 W12 W13 W14 Frame Pointer W15 Stack Pointer 0 SPLIM 0 22 0 0 PC 7 0 TBLPAG 9 Program Counter Table Memory Page Address Register 0 Data Space Read Page Register DSRPAG 8 0 DSWPAG 15 Data Space Write Page Register 0 RCOUNT 15 Stack Pointer Limit Value Register SRH SRL 0 -- -- -- -- -- -- -- DC 2 IPL 1 0 RA N OV Z C 0 15 -- -- -- -- -- -- -- -- -- -- -- -- IPL3 -- -- -- 13 REPEAT Loop Counter Register ALU STATUS Register (SR) CPU Control Register (CORCON) 0 DISICNT Disable Interrupt Count Register Registers or bits are shadowed for PUSH.S and POP.S instructions. 2013-2015 Microchip Technology Inc. DS30005009C-page 31 PIC24FJ128GB204 FAMILY 3.2 CPU Control Registers REGISTER 3-1: SR: ALU STATUS REGISTER U-0 U-0 U-0 U-0 U-0 U-0 U-0 R/W-0 -- -- -- -- -- -- -- DC bit 15 bit 8 R/W-0(1) IPL2 R/W-0(1) (2) (2) IPL1 R/W-0(1) IPL0 (2) R-0 R/W-0 R/W-0 R/W-0 R/W-0 RA N OV Z C bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-9 Unimplemented: Read as `0' bit 8 DC: ALU Half Carry/Borrow bit 1 = A carry out from the 4th low-order bit (for byte-sized data) or 8th low-order bit (for word-sized data) of the result occurred 0 = No carry out from the 4th or 8th low-order bit of the result has occurred bit 7-5 IPL<2:0>: CPU Interrupt Priority Level Status bits(1,2) 111 = CPU Interrupt Priority Level is 7 (15); user interrupts are disabled 110 = CPU Interrupt Priority Level is 6 (14) 101 = CPU Interrupt Priority Level is 5 (13) 100 = CPU Interrupt Priority Level is 4 (12) 011 = CPU Interrupt Priority Level is 3 (11) 010 = CPU Interrupt Priority Level is 2 (10) 001 = CPU Interrupt Priority Level is 1 (9) 000 = CPU Interrupt Priority Level is 0 (8) bit 4 RA: REPEAT Loop Active bit 1 = REPEAT loop is in progress 0 = REPEAT loop is not in progress bit 3 N: ALU Negative bit 1 = Result was negative 0 = Result was not negative (zero or positive) bit 2 OV: ALU Overflow bit 1 = Overflow occurred for signed (2's complement) arithmetic in this arithmetic operation 0 = No overflow has occurred bit 1 Z: ALU Zero bit 1 = An operation, which affects the Z bit, has set it at some time in the past 0 = The most recent operation, which affects the Z bit, has cleared it (i.e., a non-zero result) bit 0 C: ALU Carry/Borrow bit 1 = A carry out from the Most Significant bit (MSb) of the result occurred 0 = No carry out from the Most Significant bit of the result occurred Note 1: 2: The IPLx Status bits are read-only when NSTDIS (INTCON1<15>) = 1. The IPLx Status bits are concatenated with the IPL3 Status (CORCON<3>) bit to form the CPU Interrupt Priority Level (IPL). The value in parentheses indicates the IPL when IPL3 = 1. DS30005009C-page 32 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 3-2: CORCON: CPU CORE CONTROL REGISTER U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 15 bit 8 U-0 U-0 U-0 U-0 R/C-0 r-1 U-0 U-0 -- -- -- -- IPL3(1) -- -- -- bit 7 bit 0 Legend: C = Clearable bit r = Reserved bit R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-4 Unimplemented: Read as `0' bit 3 IPL3: CPU Interrupt Priority Level Status bit(1) 1 = CPU Interrupt Priority Level is greater than 7 0 = CPU Interrupt Priority Level is 7 or less bit 2 Reserved: Read as `1' bit 1-0 Unimplemented: Read as `0' Note 1: x = Bit is unknown The IPL3 bit is concatenated with the IPL<2:0> bits (SR<7:5>) to form the CPU Interrupt Priority Level; see Register 3-1 for bit description. 2013-2015 Microchip Technology Inc. DS30005009C-page 33 PIC24FJ128GB204 FAMILY 3.3 Arithmetic Logic Unit (ALU) The PIC24F ALU is 16 bits wide and is capable of addition, subtraction, bit shifts and logic operations. Unless otherwise mentioned, arithmetic operations are 2's complement in nature. Depending on the operation, the ALU may affect the values of the Carry (C), Zero (Z), Negative (N), Overflow (OV) and Digit Carry (DC) Status bits in the SR register. The C and DC Status bits operate as Borrow and Digit Borrow bits, respectively, for subtraction operations. The ALU can perform 8-bit or 16-bit operations, depending on the mode of the instruction that is used. Data for the ALU operation can come from the W register array, or data memory, depending on the addressing mode of the instruction. Likewise, output data from the ALU can be written to the W register array or a data memory location. The PIC24F CPU incorporates hardware support for both multiplication and division. This includes a dedicated hardware multiplier and support hardware for 16-bit divisor division. 3.3.1 MULTIPLIER The ALU contains a high-speed, 17-bit x 17-bit multiplier. It supports unsigned, signed or mixed sign operation in several multiplication modes: * * * * * * * 16-bit x 16-bit signed 16-bit x 16-bit unsigned 16-bit signed x 5-bit (literal) unsigned 16-bit unsigned x 16-bit unsigned 16-bit unsigned x 5-bit (literal) unsigned 16-bit unsigned x 16-bit signed 8-bit unsigned x 8-bit unsigned TABLE 3-2: 3.3.2 DIVIDER The divide block supports 32-bit/16-bit and 16-bit/16-bit signed and unsigned integer divide operations with the following data sizes: 1. 2. 3. 4. 32-bit signed/16-bit signed divide 32-bit unsigned/16-bit unsigned divide 16-bit signed/16-bit signed divide 16-bit unsigned/16-bit unsigned divide The quotient for all divide instructions ends up in W0 and the remainder in W1. The 16-bit signed and unsigned DIV instructions can specify any W register for both the 16-bit divisor (Wn), and any W register (aligned) pair (W(m + 1):Wm) for the 32-bit dividend. The divide algorithm takes one cycle per bit of divisor, so both 32-bit/16-bit and 16-bit/16-bit instructions take the same number of cycles to execute. 3.3.3 MULTI-BIT SHIFT SUPPORT The PIC24F ALU supports both single bit and single-cycle, multi-bit arithmetic and logic shifts. Multi-bit shifts are implemented using a shifter block, capable of performing up to a 15-bit arithmetic right shift, or up to a 15-bit left shift, in a single cycle. All multi-bit shift instructions only support Register Direct Addressing for both the operand source and result destination. A full summary of instructions that use the shift operation is provided in Table 3-2. INSTRUCTIONS THAT USE THE SINGLE BIT AND MULTI-BIT SHIFT OPERATION Instruction Description ASR Arithmetic Shift Right Source register by one or more bits. SL Shift Left Source register by one or more bits. LSR Logical Shift Right Source register by one or more bits. DS30005009C-page 34 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 4.0 MEMORY ORGANIZATION As Harvard architecture devices, PIC24F microcontrollers feature separate program and data memory spaces and buses. This architecture also allows direct access of program memory from the Data Space (DS) during code execution. 4.1 Program Memory Space The program address memory space of the PIC24FJ128GB204 family devices is 4M instructions. The space is addressable by a 24-bit value derived FIGURE 4-1: User access to the program memory space is restricted to the lower half of the address range (000000h to 7FFFFFh). The exception is the use of TBLRD/TBLWT operations, which use TBLPAG<7> to permit access to the Configuration bits and Device ID sections of the configuration memory space. Memory maps for the PIC24FJ128GB204 family of devices are shown in Figure 4-1. PROGRAM SPACE MEMORY MAP FOR PIC24FJ128GB204 FAMILY DEVICES PIC24FJ64GB2XX PIC24F128GB2XX GOTO Instruction Reset Address Interrupt Vector Table Reserved GOTO Instruction Reset Address Interrupt Vector Table Reserved Alternate Vector Table Alternate Vector Table User Flash Program Memory (22K instructions) Flash Config Words User Memory Space from either the 23-bit Program Counter (PC) during program execution, or from table operation or Data Space remapping, as described in Section 4.3 "Interfacing Program and Data Memory Spaces". User Flash Program Memory (44K instructions) Flash Config Words 000000h 000002h 000004h 0000FEh 000100h 000104h 0001FEh 000200h 00ABFEh 00AC00h 0157F7h 0157F8h 0157FEh 015800h Unimplemented Read `0' Unimplemented Read `0' Configuration Memory Space 7FFFFEh 800000h Reserved Reserved Device Config Registers Device Config Registers Reserved Reserved F7FFFEh F80000h F8000Eh F80010h FEFFFEh FF0000h DEVID (2) Note: DEVID (2) FFFFFEh Memory areas are not shown to scale. 2013-2015 Microchip Technology Inc. DS30005009C-page 35 PIC24FJ128GB204 FAMILY 4.1.1 PROGRAM MEMORY ORGANIZATION 4.1.3 In PIC24FJ128GB204 family devices, the top four words of on-chip program memory are reserved for configuration information. On device Reset, the configuration information is copied into the appropriate Configuration register. The addresses of the Flash Configuration Word for devices in the PIC24FJ128GB204 family are shown in Table 4-1. Their location in the memory map is shown with the other memory vectors in Figure 4-1. The program memory space is organized in word-addressable blocks. Although it is treated as 24 bits wide, it is more appropriate to think of each address of the program memory as a lower and upper word, with the upper byte of the upper word being unimplemented. The lower word always has an even address, while the upper word has an odd address (Figure 4-2). The Configuration Words in program memory are a compact format. The actual Configuration bits are mapped in several different registers in the configuration memory space. Their order in the Flash Configuration Words does not reflect a corresponding arrangement in the configuration space. Additional details on the device Configuration Words are provided in Section 30.0 "Special Features". Program memory addresses are always word-aligned on the lower word and addresses are incremented or decremented by two during code execution. This arrangement also provides compatibility with data memory space addressing and makes it possible to access data in the program memory space. 4.1.2 HARD MEMORY VECTORS TABLE 4-1: All PIC24F devices reserve the addresses between 000000h and 000200h for hard-coded program execution vectors. A hardware Reset vector is provided to redirect code execution from the default value of the PC on device Reset to the actual start of code. A GOTO instruction is programmed by the user at 000000h with the actual address for the start of code at 000002h. msw Address Configuration Word Addresses PIC24FJ64GB2XX 22,016 00ABF8h:00ABFEh PIC24FJ128GB2XX 44,032 0157F8h:0157FEh least significant word most significant word 16 8 PC Address (lsw Address) 0 0x000000 0x000002 0x000004 0x000006 00000000 00000000 00000000 00000000 Program Memory `Phantom' Byte (read as `0') DS30005009C-page 36 Program Memory (Words) PROGRAM MEMORY ORGANIZATION 23 0x000001 0x000003 0x000005 0x000007 FLASH CONFIGURATION WORDS FOR PIC24FJ128GB204 FAMILY DEVICES Device PIC24F devices also have two Interrupt Vector Tables (IVTs), located from 000004h to 0000FFh and 000100h to 0001FFh. These vector tables allow each of the many device interrupt sources to be handled by separate ISRs. A more detailed discussion of the Interrupt Vector Tables is provided in Section 8.1 "Interrupt Vector Table". FIGURE 4-2: FLASH CONFIGURATION WORDS Instruction Width 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 4.2 Note: Data Memory Space The upper half of data memory address space (8000h to FFFFh) is used as a window into the Extended Data Space (EDS). This allows the microcontroller to directly access a greater range of data beyond the standard 16-bit address range. EDS is discussed in detail in Section 4.2.5 "Extended Data Space (EDS)". This data sheet summarizes the features of this group of PIC24F devices. It is not intended to be a comprehensive reference source. For more information, refer to the "dsPIC33/PIC24 Family Reference Manual", "Data Memory with Extended Data Space (EDS)" (DS39733). The information in this data sheet supersedes the information in the FRM. The lower half of DS is compatible with previous PIC24F microcontrollers without EDS. All PIC24FJ128GB204 family devices implement 8 Kbytes of data RAM in the lower half of DS, from 0800h to 27FFh. 4.2.1 The PIC24F core has a 16-bit wide data memory space, addressable as a single linear range. The Data Space (DS) is accessed using two Address Generation Units (AGUs), one each for read and write operations. The Data Space memory map is shown in Figure 4-3. The data memory space is organized in byte-addressable, 16-bit wide blocks. Data is aligned in data memory and registers as 16-bit words, but all Data Space Effective Addresses (EAs) resolve to bytes. The Least Significant Bytes (LSBs) of each word have even addresses, while the Most Significant Bytes (MSBs) have odd addresses. The 16-bit wide data addresses in the data memory space point to bytes within the Data Space. This gives a DS address range of 64 Kbytes or 32K words. The lower half (0000h to 7FFFh) is used for implemented (on-chip) memory addresses. FIGURE 4-3: DATA SPACE MEMORY MAP FOR PIC24FJ128GB204 FAMILY DEVICES MSB Address MSB 0001h 1FFFh 2001h LSB SFR Space 07FFh 0801h Lower 32 Kbytes Data Space DATA SPACE WIDTH 8 Kbytes Data RAM 27FFh 2801h LSB Address 0000h 07FEh 0800h 1FFEh 2000h 27FEh 2800h Unimplemented SFR Space Near Data Space EDS Page 0x1 (32 Kbytes) EDS Page 0x2 (32 Kbytes) 7FFFh 8001h 7FFEh 8000h EDS Page 0x3 EPMP Memory Space EDS Page 0x4 EDS Window Upper 32 Kbytes Data Space EDS Page 0x1FF EDS Page 0x200 EDS Page 0x2FF FFFFh FFFEh EDS Page 0x300 EDS Page 0x3FF Program Space Visibility Area to Access Lower Word of Program Memory Program Space Visibility Area to Access Upper Word of Program Memory Note: Memory areas not shown to scale. 2013-2015 Microchip Technology Inc. DS30005009C-page 37 PIC24FJ128GB204 FAMILY 4.2.2 DATA MEMORY ORGANIZATION AND ALIGNMENT A Sign-Extend (SE) instruction is provided to allow users to translate 8-bit signed data to 16-bit signed values. Alternatively, for 16-bit unsigned data, users can clear the MSB of any W register by executing a Zero-Extend (ZE) instruction on the appropriate address. To maintain backward compatibility with PIC(R) MCUs and improve Data Space memory usage efficiency, the PIC24F instruction set supports both word and byte operations. As a consequence of byte accessibility, all Effective Address (EA) calculations are internally scaled to step through word-aligned memory. For example, the core recognizes that Post-Modified Register Indirect Addressing mode [Ws++] will result in a value of Ws + 1 for byte operations and Ws + 2 for word operations. Although most instructions are capable of operating on word or byte data sizes, it should be noted that some instructions operate only on words. 4.2.3 The 8-Kbyte area, between 0000h and 1FFFh, is referred to as the Near Data Space. Locations in this space are directly addressable via a 13-bit absolute address field within all memory direct instructions. The remainder of the Data Space is addressable indirectly. Additionally, the whole Data Space is addressable using MOV instructions, which support Memory Direct Addressing with a 16-bit address field. Data byte reads will read the complete word, which contains the byte, using the LSB of any EA to determine which byte to select. The selected byte is placed onto the LSB of the data path. That is, data memory and registers are organized as two parallel, byte-wide entities with shared (word) address decode but separate write lines. Data byte writes only write to the corresponding side of the array or register which matches the byte address. 4.2.4 All word accesses must be aligned to an even address. Misaligned word data fetches are not supported, so care must be taken when mixing byte and word operations or translating from 8-bit MCU code. If a misaligned read or write is attempted, an address error trap will be generated. If the error occurred on a read, the instruction underway is completed; if it occurred on a write, the instruction will be executed but the write will not occur. In either case, a trap is then executed, allowing the system and/or user to examine the machine state prior to execution of the address Fault. SPECIAL FUNCTION REGISTER (SFR) SPACE The first 2 Kbytes of the Near Data Space, from 0000h to 07FFh, are primarily occupied with Special Function Registers (SFRs). These are used by the PIC24F core and peripheral modules for controlling the operation of the device. SFRs are distributed among the modules that they control and are generally grouped together by the module. Much of the SFR space contains unused addresses; these are read as `0'. A diagram of the SFR space, showing where the SFRs are actually implemented, is shown in Table 4-2. Each implemented area indicates a 32-byte region where at least one address is implemented as an SFR. A complete list of implemented SFRs, including their addresses, is shown in Table 4-3 through Table 4-33. All byte loads into any W register are loaded into the LSB. The Most Significant Byte (MSB) is not modified. TABLE 4-2: NEAR DATA SPACE IMPLEMENTED REGIONS OF SFR DATA SPACE SFR Space Address xx00 xx20 000h 100h 200h xx40 xx60 Core System NVM/RTCC A/D/CTMU xx80 xxA0 ICN PMP CMP CRC I/O OC SPI PPS 400h USB DMA 500h I2CTM/DSM -- UART -- 700h Legend: Crypto IC 300h 600h xxE0 Interrupts PMD TMR xxC0 -- -- = No implemented SFRs in this block DS30005009C-page 38 2013-2015 Microchip Technology Inc. 2013-2015 Microchip Technology Inc. TABLE 4-3: File Name Addr CPU CORE REGISTER MAP Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 All Resets WREG0 0000 Working Register 0 0000 WREG1 0002 Working Register 1 0000 WREG2 0004 Working Register 2 0000 WREG3 0006 Working Register 3 0000 WREG4 0008 Working Register 4 0000 WREG5 000A Working Register 5 0000 WREG6 000C Working Register 6 0000 WREG7 000E Working Register 7 0000 WREG8 0010 Working Register 8 0000 WREG9 0012 Working Register 9 0000 WREG10 0014 Working Register 10 0000 WREG11 0016 Working Register 11 0000 0018 Working Register 12 0000 001A Working Register 13 0000 WREG14 001C Working Register 14 0000 WREG15 001E Working Register 15 0800 SPLIM 0020 Stack Pointer Limit Value Register xxxx PCL 002E Program Counter Low Word Register PCH 0030 -- -- -- -- -- -- -- -- 0000 Program Counter High Word Register 0000 DSRPAG 0032 -- -- -- -- -- -- DSWPAG 0034 -- -- -- -- -- -- RCOUNT 0036 SR 0042 -- -- -- -- -- -- -- DC IPL2 IPL1 IPL0 RA N OV Z C 0000 CORCON 0044 -- -- -- -- -- -- -- -- -- -- -- -- IPL3 r -- -- 0004 DISICNT 0052 -- -- TBLPAG 0054 -- -- Extended Data Space Read Page Address Register -- 0001 Extended Data Space Write Page Address Register 0001 REPEAT Loop Counter Register -- -- -- -- -- xxxx Disable Interrupts Counter Register xxxx -- 0000 Table Memory Page Address Register Legend: -- = unimplemented, read as `0'; r = reserved bit, do not modify; x = unknown value on Reset. Reset values are shown in hexadecimal. DS30005009C-page 39 PIC24FJ128GB204 FAMILY WREG12 WREG13 File Name Addr ICN REGISTER MAP Bit 15 CNPD1 0056 CN15PDE Bit 14 Bit 13 Bit 12 -- CN13PDE CN12PDE CN11PDE CN10PDE(1) CN9PDE(1) CN8PDE(1) CN7PDE CN27PDE CN26PDE(1) CN25PDE(1) CN24PDE CN23PDE CNPD2 0058 -- CN30PDE CN29PDE CN28PDE(1) CNPD3 005A -- -- -- -- Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 All Resets CN6PDE CN5PDE CN4PDE CN3PDE CN2PDE CN1PDE CN0PDE 0000 CN22PDE CN21PDE CN20PDE(1) CN19PDE(1) CN18PDE(1) CN17PDE(1) CN16PDE 0000 Bit 6 CN36PDE(1) CN35PDE(1) CN34PDE(1) CN33PDE(1) -- -- -- -- -- -- -- -- 0000 CN9IE(1) CN8IE(1) CN7IE CN6IE CN5IE CN4IE CN3IE CN2IE CN1IE CN0IE 0000 CNEN1 0062 CN15IE -- CN13IE CN12IE CN11IE CN10IE(1) CNEN2 0064 -- CN30IE CN29IE CN28IE(1) CN27IE CN26IE(1) CN25IE(1) CN24IE CN23IE CN22IE CN21IE CN20IE(1) CN19IE(1) CN18IE(1) CN17IE(1) CN16IE 0000 CNEN3 0066 -- -- -- -- -- -- -- -- -- -- -- CN36IE(1) CN35IE(1) CN34IE(1) CN33IE(1) -- 0000 -- CN13PUE CN12PUE CN7PUE CN6PUE CN5PUE CN4PUE CN3PUE CN2PUE CN1PUE CN0PUE 0000 CNPU1 006E CN15PUE CNPU2 0070 -- CN30PUE CNPU3 0072 -- -- Legend: Note 1: CN11PUE CN10PUE(1) CN9PUE(1) CN8PUE(1) CN29PUE CN28PUE(1) CN27PUE CN26PUE(1) CN25PUE(1) CN24PUE CN23PUE -- -- -- -- = unimplemented, read as `0'. Reset values are shown in hexadecimal. These bits are unimplemented in 28-pin devices, read as `0'. -- -- -- -- CN22PUE CN21PUE CN20PUE(1) CN19PUE(1) CN18PUE(1) CN17PUE(1) CN16PUE 0000 -- -- CN36PUE(1) CN35PUE(1) CN34PUE(1) CN33PUE(1) -- 0000 PIC24FJ128GB204 FAMILY DS30005009C-page 40 TABLE 4-4: 2013-2015 Microchip Technology Inc. 2013-2015 Microchip Technology Inc. TABLE 4-5: File Name Addr INTERRUPT CONTROLLER REGISTER MAP Bit 15 INTCON1 0080 NSTDIS INTCON2 0082 IFS0 0084 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 All Resets 0000 -- -- -- -- -- -- -- -- -- -- MATHERR ADDRERR STKERR OSCFAIL -- ALTIVT DISI -- -- -- -- -- -- -- -- -- INT4EP INT3EP INT2EP INT1EP INT0EP 0000 -- DMA1IF AD1IF U1TXIF U1RXIF SPI1TXIF SPI1IF T3IF T2IF OC2IF IC2IF DMA0IF T1IF OC1IF IC1IF INT0IF 0000 CNIF CMIF 0086 U2TXIF U2RXIF INT2IF T5IF T4IF OC4IF OC3IF DMA2IF -- -- -- INT1IF IFS2 0088 -- DMA4IF PMPIF -- -- OC6IF OC5IF IC6IF IC5IF IC4IF IC3IF DMA3IF DS30005009C-page 41 MI2C1IF SI2C1IF 0000 SPI2TXIF SPI2IF IFS3 008A -- RTCIF DMA5IF SPI3RXIF SPI2RXIF SPI1RXIF -- KEYSTRIF CRYDNIF INT4IF INT3IF -- -- 0000 MI2C2IF SI2C2IF -- IFS4 008C -- -- CTMUIF -- -- -- -- HLVDIF -- -- -- -- 0000 CRCIF U2ERIF U1ERIF -- IFS5 008E -- -- -- -- SPI3TXIF SPI3IF U4TXIF U4RXIF U4ERIF USB1IF I2C2BCIF 0000 I2C1BCIF U3TXIF U3RXIF U3ERIF -- IFS6 0090 -- -- -- -- -- FSTIF -- -- -- -- 0000 -- -- -- -- -- -- IFS7 0092 -- -- -- -- -- -- -- -- -- 0000 -- JTAGIF -- -- -- -- -- IEC0 0094 -- DMA1IE AD1IE U1TXIE U1RXIE SPI1TXIE SPI1IE T3IE 0000 T2IE OC2IE IC2IE DMA0IE T1IE OC1IE IC1IE INT0IE IEC1 0096 U2TXIE U2RXIE INT2IE T5IE T4IE OC4IE OC3IE 0000 DMA2IE -- -- -- INT1IE CNIE CMIE MI2C1IE SI2C1IE IEC2 0098 -- DMA4IE PMPIE -- -- OC6IE 0000 OC5IE IC6IE IC5IE IC4IE IC3IE DMA3IE SPI2TXIE SPI2IE IEC3 009A -- RTCIE DMA5IE SPI3RXIE SPI2RXIE 0000 SPI1RXIE -- KEYSTRIE CRYDNIE INT4IE INT3IE -- -- MI2C2IE SI2C2IE -- IEC4 009C -- -- CTMUIE -- 0000 -- -- -- HLVDIE -- -- -- -- CRCIE U2ERIE U1ERIE -- IEC5 009E -- -- -- 0000 -- SPI3TXIE SPI3IE U4TXIE U4RXIE U4ERIE USB1IE I2C2BCIE I2C1BCIE U3TXIE U3RXIE U3ERIE -- IEC6 00A0 -- -- 0000 -- -- -- FSTIE -- -- -- -- -- -- -- -- -- -- IEC7 00A2 -- 0000 -- -- -- -- -- -- -- -- -- JTAGIE -- -- -- -- -- IPC0 00A4 0000 -- T1IP2 T1IP1 T1IP0 -- OC1IP2 OC1IP1 OC1IP0 -- IC1IP2 IC1IP1 IC1IP0 -- INT0IP2 INT0IP1 INT0IP0 IPC1 4444 00A6 -- T2IP2 T2IP1 T2IP0 -- OC2IP2 OC2IP1 OC2IP0 -- IC2IP2 IC2IP1 IC2IP0 -- DMA0IP2 DMA0IP1 DMA0IP0 4444 IPC2 00A8 -- U1RXIP2 U1RXIP1 U1RXIP0 -- SPI1TXIP2 SPI1TXIP1 SPI1TXIP0 -- SPI1IP2 SPI1IP1 SPI1IP0 -- T3IP2 T3IP1 T3IP0 4444 IPC3 00AA -- -- -- -- -- DMA1IP2 DMA1IP1 DMA1IP0 -- AD1IP2 AD1IP1 AD1IP0 -- U1TXIP2 U1TXIP1 U1TXIP0 0444 IPC4 00AC -- CNIP2 CNIP1 CNIP0 -- CMIP2 CMIP1 CMIP0 -- MI2C1IP0 -- SI2C1IP2 SI2C1IP1 SI2C1IP0 4444 IPC5 00AE -- -- -- -- -- -- -- -- -- -- -- -- -- IPC6 00B0 -- T4IP2 T4IP1 T4IP0 -- OC4IP2 OC4IP1 OC4IP0 -- OC3IP2 OC3IP1 OC3IP0 -- DMA2IP2 DMA2IP1 DMA2IP0 4444 IPC7 00B2 -- U2TXIP2 U2TXIP1 U2TXIP0 -- U2RXIP2 U2RXIP1 U2RXIP0 -- INT2IP2 INT2IP1 INT2IP0 -- T5IP2 T5IP1 T5IP0 4444 IPC8 00B4 -- -- SPI2IP2 SPI2IP1 SPI2IP0 4444 IPC9 00B6 -- IC5IP2 IC5IP1 IC5IP0 -- IC4IP2 IC4IP1 IC4IP0 -- IC3IP2 IC3IP1 IC3IP0 -- DMA3IP2 DMA3IP1 DMA3IP0 4444 IPC10 00B8 -- -- -- -- -- OC6IP2 OC6IP1 OC6IP0 -- OC5IP2 OC5IP1 OC5IP0 -- IC6IP2 IC6IP1 IC6IP0 0444 IPC11 00BA -- -- -- -- -- DMA4IP2 DMA4IP1 DMA4IP0 -- PMPIP2 PMPIP1 PMPIP0 -- -- -- -- 0440 IPC12 00BC -- -- -- -- -- MI2C2IP2 MI2C2IP1 MI2C2IP0 -- SI2C2IP2 SI2C2IP1 SI2C2IP0 -- -- -- -- 0440 IPC13 00BE -- CRYDNIP2 CRYDNIP1 CRYDNIP0 -- INT4IP2 INT4IP1 INT4IP0 -- INT3IP2 INT3IP1 INT3IP0 -- -- -- -- 4440 IPC14 00CO -- SPI2RXIP2 SPI2RXIP1 SPI2RXIP0 -- SPI1RXIP2 SPI1RXIP1 SPI1RXIP0 -- -- -- -- -- KEYSTRIP2 KEYSTRIP1 KEYSTRIP0 4404 IPC15 00C2 -- -- -- -- -- RTCIP2 RTCIP1 RTCIP0 -- DMA5IP2 DMA5IP1 DMA5IP0 -- SPI3RXIP2 Legend: CRYROLLIP2 CRYROLLIP1 CRYROLLIP0 -- CRYFREEIP2 CRYFREEIP1 CRYFREEIP0 -- = unimplemented, read as `0'; r = reserved bit, maintain as `0'. Reset values are shown in hexadecimal. -- MI2C1IP2 MI2C1IP1 SPI2TXIP2 SPI2TXIP1 SPI2TXIP0 CRYROLLIF CRYFREEIF CRYROLLIE CRYFREEIE INT1IP<2:0> SPI3RXIP1 0004 SPI3RXIP0 0444 PIC24FJ128GB204 FAMILY IFS1 File Name INTERRUPT CONTROLLER REGISTER MAP (CONTINUED) Addr Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 IPC16 00C4 -- CRCIP2 CRCIP1 CRCIP0 -- U2ERIP2 U2ERIP1 U2ERIP0 -- U1ERIP2 U1ERIP1 U1ERIP0 -- -- IPC18 00C8 -- -- -- -- -- -- -- -- -- -- -- -- -- IPC19 00CA -- -- -- -- -- -- -- -- -- IPC20 00CC -- U3TXIP2 U3TXIP1 U3TXIP0 -- U3RXIP2 U3RXIP1 U3RXIP0 -- U3ERIP2 IPC21 00CE -- U4ERIP2 U4ERIP1 U4ERIP0 -- USB1IP2 USB1IP1 USB1IP0 -- IPC22 00D0 -- SPI3TXIP2 SPI3TXIP1 SPI3TXIP0 -- SPI3IP2 SPI3IP1 SPI3IP0 -- U4TXIP2 U4TXIP1 IPC26 00D8 -- -- -- -- -- -- -- -- IPC29 00DE -- -- -- -- -- -- -- -- r VHOLD -- ILR3 ILR2 ILR1 ILR0 INTTREG 00E0 CPUIRQ Legend: FSTIP<2:0> -- = unimplemented, read as `0'; r = reserved bit, maintain as `0'. Reset values are shown in hexadecimal. -- CTMUIP<2:0> Bit 1 Bit 0 All Resets -- -- 4440 HLVDIP<2:0> 0004 -- -- -- -- 0040 U3ERIP0 -- -- -- -- 4440 I2C2BCIP2 I2C2BCIP1 I2C2BCIP0 -- I2C1BCIP2 I2C1BCIP1 I2C1BCIP0 4444 U4TXIP0 -- U4RXIP2 U4RXIP1 U4RXIP0 4444 -- -- -- -- -- 0400 -- -- -- -- 0040 VECNUM3 VECNUM2 VECNUM1 VECNUM0 0000 U3ERIP1 JTAGIP<2:0> VECNUM7 VECNUM6 VECNUM5 VECNUM4 PIC24FJ128GB204 FAMILY DS30005009C-page 42 TABLE 4-5: 2013-2015 Microchip Technology Inc. 2013-2015 Microchip Technology Inc. TABLE 4-6: File Name Addr TIMER REGISTER MAP Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 TMR1 024C Timer1 Register PR1 024E Timer1 Period Register T1CON 0250 TON -- TSIDL -- -- -- TECS1 TECS0 -- Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 All Resets 0000 FFFF TGATE TCKPS1 TCKPS0 -- TSYNC TCS -- 0000 TMR2 0252 Timer2 Register 0000 TMR3HLD 0254 Timer3 Holding Register (for 32-bit timer operations only) 0000 TMR3 0256 Timer3 Register 0000 PR2 0258 Timer2 Period Register FFFF PR3 025A Timer3 Period Register T2CON 025C TON -- TSIDL -- -- -- TECS1 TECS0 -- TGATE TCKPS1 TCKPS0 T32 -- TCS -- 0000 T3CON 025E TON -- TSIDL -- -- -- TECS1 TECS0 -- TGATE TCKPS1 TCKPS0 -- -- TCS -- 0000 TMR4 0260 Timer4 Register 0000 TMR5HLD 0262 Timer5 Holding Register (for 32-bit operations only) 0000 FFFF 0264 Timer5 Register 0000 PR4 0266 Timer4 Period Register FFFF PR5 0268 Timer5 Period Register T4CON 026A TON -- TSIDL -- -- -- TECS1 TECS0 -- TGATE TCKPS1 TCKPS0 T45 -- TCS -- 0000 T5CON 026C TON -- TSIDL -- -- -- TECS1 TECS0 -- TGATE TCKPS1 TCKPS0 -- -- TCS -- 0000 Legend: -- = unimplemented, read as `0'. Reset values are shown in hexadecimal. FFFF DS30005009C-page 43 PIC24FJ128GB204 FAMILY TMR5 File Name INPUT CAPTURE REGISTER MAP Bit 6 Bit 5 -- ICI1 ICI0 ICTRIG TRIGSTAT -- Bit 2 Bit 1 Bit 0 All Resets ICOV ICBNE ICM2 ICM1 ICM0 0000 2013-2015 Microchip Technology Inc. Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 IC1CON1 02AA -- -- ICSIDL ICTSEL2 ICTSEL1 ICTSEL0 -- -- IC1CON2 02AC -- -- -- -- -- -- -- IC32 IC1BUF 02AE Input Capture 1 Buffer Register IC1TMR 02B0 Input Capture Timer Value 1 Register IC2CON1 02B2 -- -- ICSIDL ICTSEL2 ICTSEL1 ICTSEL0 -- -- -- ICI1 ICI0 IC2CON2 02B4 -- -- -- -- -- -- -- IC32 ICTRIG TRIGSTAT -- IC2BUF 02B6 Input Capture 2 Buffer Register IC2TMR 02B8 Input Capture Timer Value 2 Register IC3CON1 02BA -- -- ICSIDL ICTSEL2 ICTSEL1 ICTSEL0 -- -- -- ICI1 ICI0 IC3CON2 02BC -- -- -- -- -- -- -- IC32 ICTRIG TRIGSTAT -- IC3BUF 02BE Input Capture 3 Buffer Register IC3TMR 02C0 Input Capture Timer Value 3 Register IC4CON1 02C2 -- -- ICSIDL ICTSEL2 ICTSEL1 ICTSEL0 -- -- -- ICI1 ICI0 IC4CON2 02C4 -- -- -- -- -- -- -- IC32 ICTRIG TRIGSTAT -- IC4BUF 02C6 Input Capture 4 Buffer Register IC4TMR 02C8 Input Capture Timer Value 4 Register IC5CON1 02CA -- -- ICSIDL ICTSEL2 ICTSEL1 ICTSEL0 -- -- -- ICI1 ICI0 IC5CON2 02CC -- -- -- -- -- -- -- IC32 ICTRIG TRIGSTAT -- IC5BUF 02CE Input Capture 5 Buffer Register IC5TMR 02D0 Input Capture Timer Value 5 Register IC6CON1 02D2 -- -- ICSIDL ICTSEL2 ICTSEL1 ICTSEL0 -- -- -- ICI1 ICI0 IC6CON2 02D4 -- -- -- -- -- -- -- IC32 ICTRIG TRIGSTAT -- IC6BUF 02D6 Input Capture 6 Buffer Register 0000 IC6TMR 02D8 Input Capture Timer Value 6 Register xxxx -- = unimplemented, read as `0'; x = unknown value on Reset. Reset values are shown in hexadecimal. Bit 7 Bit 3 Bit 15 Legend: Bit 8 Bit 4 Addr SYNCSEL4 SYNCSEL3 SYNCSEL2 SYNCSEL1 SYNCSEL0 000D 0000 xxxx ICOV ICBNE ICM2 ICM1 ICM0 SYNCSEL4 SYNCSEL3 SYNCSEL2 SYNCSEL1 SYNCSEL0 0000 000D 0000 xxxx ICOV ICBNE ICM2 ICM1 ICM0 SYNCSEL4 SYNCSEL3 SYNCSEL2 SYNCSEL1 SYNCSEL0 0000 000D 0000 xxxx ICOV ICBNE ICM2 ICM1 ICM0 SYNCSEL4 SYNCSEL3 SYNCSEL2 SYNCSEL1 SYNCSEL0 0000 000D 0000 xxxx ICOV ICBNE ICM2 ICM1 ICM0 SYNCSEL4 SYNCSEL3 SYNCSEL2 SYNCSEL1 SYNCSEL0 0000 000D 0000 xxxx ICOV ICBNE ICM2 ICM1 ICM0 SYNCSEL4 SYNCSEL3 SYNCSEL2 SYNCSEL1 SYNCSEL0 0000 000D PIC24FJ128GB204 FAMILY DS30005009C-page 44 TABLE 4-7: 2013-2015 Microchip Technology Inc. TABLE 4-8: File Name Addr OUTPUT COMPARE REGISTER MAP Bit 15 OC1CON1 026E -- OC1CON2 0270 FLTMD Bit 14 Bit 13 -- OCSIDL FLTOUT FLTTRIEN Bit 12 Bit 11 Bit 10 OCTSEL2 OCTSEL1 OCTSEL0 OCINV -- DCB1 Bit 9 Bit 8 ENFLT2 ENFLT1 DCB0 OC32 Bit 7 Bit 6 Bit 5 ENFLT0 OCFLT2 OCFLT1 OCTRIG TRIGSTAT OCTRIS Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 All Resets OCFLT0 TRIGMODE OCM2 OCM1 OCM0 0000 SYNCSEL4 SYNCSEL3 SYNCSEL2 SYNCSEL1 SYNCSEL0 000C OC1RS 0272 Output Compare 1 Secondary Register 0000 OC1R 0274 Output Compare 1 Register 0000 OC1TMR 0276 Output Compare Timer Value 1 Register OC2CON1 0278 -- OC2CON2 027A FLTMD -- OCSIDL FLTOUT FLTTRIEN OCTSEL2 OCTSEL1 OCTSEL0 OCINV -- DCB1 xxxx ENFLT2 ENFLT1 ENFLT0 OCFLT2 OCFLT1 DCB0 OC32 OCTRIG TRIGSTAT OCTRIS OCFLT0 TRIGMODE OCM2 OCM1 OCM0 SYNCSEL4 SYNCSEL3 SYNCSEL2 SYNCSEL1 SYNCSEL0 0000 000C OC2RS 027C Output Compare 2 Secondary Register 0000 OC2R 027E Output Compare 2 Register 0000 OC2TMR 0280 Output Compare Timer Value 2 Register OC3CON1 0282 -- OC3CON2 0284 FLTMD -- OCSIDL FLTOUT FLTTRIEN OCTSEL2 OCTSEL1 OCTSEL0 OCINV -- DCB1 xxxx ENFLT2 ENFLT1 ENFLT0 OCFLT2 OCFLT1 DCB0 OC32 OCTRIG TRIGSTAT OCTRIS OCFLT0 TRIGMODE OCM2 OCM1 OCM0 SYNCSEL4 SYNCSEL3 SYNCSEL2 SYNCSEL1 SYNCSEL0 0000 000C 0286 Output Compare 3 Secondary Register 0000 OC3R 0288 Output Compare 3 Register 0000 OC3TMR 028A Output Compare Timer Value 3 Register OC4CON1 028C -- OC4CON2 028E FLTMD -- OCSIDL FLTOUT FLTTRIEN OCTSEL2 OCTSEL1 OCTSEL0 OCINV -- DCB1 xxxx ENFLT2 ENFLT1 ENFLT0 OCFLT2 OCFLT1 DCB0 OC32 OCTRIG TRIGSTAT OCTRIS OCFLT0 TRIGMODE OCM2 OCM1 OCM0 SYNCSEL4 SYNCSEL3 SYNCSEL2 SYNCSEL1 SYNCSEL0 0000 000C OC4RS 0290 Output Compare 4 Secondary Register 0000 OC4R 0292 Output Compare 4 Register 0000 OC4TMR 0294 Output Compare Timer Value 4 Register OC5CON1 0296 -- OC5CON2 0298 FLTMD -- OCSIDL FLTOUT FLTTRIEN OCTSEL2 OCTSEL1 OCTSEL0 OCINV -- DCB1 xxxx ENFLT2 ENFLT1 ENFLT0 OCFLT1 OCFLT1 DCB0 OC32 OCTRIG TRIGSTAT OCTRIS OCFLT0 TRIGMODE OCM2 OCM1 OCM0 SYNCSEL4 SYNCSEL3 SYNCSEL2 SYNCSEL1 SYNCSEL0 0000 000C OC5RS 029A Output Compare 5 Secondary Register 0000 OC5R 029C Output Compare 5 Register 0000 OC5TMR 029E Output Compare Timer Value 5 Register OC6CON1 02A0 -- OC6CON2 02A2 FLTMD -- OCSIDL FLTOUT FLTTRIEN OCTSEL2 OCTSEL1 OCTSEL0 OCINV -- DCB1 xxxx ENFLT2 ENFLT1 ENFLT0 OCFLT2 OCFLT1 DCB0 OC32 OCTRIG TRIGSTAT OCTRIS OCFLT0 TRIGMODE OCM2 OCM1 OCM0 SYNCSEL4 SYNCSEL3 SYNCSEL2 SYNCSEL1 SYNCSEL0 0000 000C DS30005009C-page 45 OC6RS 02A4 Output Compare 6 Secondary Register 0000 OC6R 02A6 Output Compare 6 Register 0000 OC6TMR 02A8 Output Compare Timer Value 6 Register xxxx Legend: -- = unimplemented, read as `0'; x = unknown value on Reset. Reset values are shown in hexadecimal. PIC24FJ128GB204 FAMILY OC3RS File Name Addr Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 All Resets I2C1RCV 02DA -- -- -- -- -- -- -- -- I2C1 Receive Register I2C1TRN 02DC -- -- -- -- -- -- -- -- I2C1 Transmit Register I2C1BRG 02DE -- -- -- -- I2C1CONL 02E0 I2CEN -- I2CSIDL SCLREL STRICT A10M DISSLW SMEN GCEN STREN ACKDT ACKEN RCEN PEN RSEN SEN 1000 I2C1CONH 02E2 -- -- -- -- -- -- -- -- -- PCIE SCIE BOEN SDAHT SBCDE AHEN DHEN 0000 GCSTAT ADD10 IWCOL I2COV D/A P S R/W RBF TBF 0000 0000 00FF I2C1 Baud Rate Generator Register 0000 I2C1STAT 02E4 ACKTIM -- -- BCL I2C1ADD 02E6 -- -- -- -- -- -- I2C1 Address Register I2C1MSK 02E8 -- -- -- -- -- -- 12C1 Address Mask Register I2C2RCV 02EA -- -- -- -- -- -- -- -- I2C2TRN 02EC -- -- -- -- -- -- -- -- I2C2BRG 02EE -- -- -- -- I2C2CONL 02F0 I2CEN -- I2CSIDL SCLREL STRICT A10M DISSLW SMEN GCEN STREN ACKDT ACKEN RCEN PEN RSEN SEN 1000 I2C2CONH 02F2 -- -- -- -- -- -- -- -- -- PCIE SCIE BOEN SDAHT SBCDE AHEN DHEN 0000 GCSTAT ADD10 IWCOL I2COV D/A P S R/W RBF TBF 0000 ACKSTAT TRSTAT ACKSTAT TRSTAT 0000 0000 I2C2 Receive Register 0000 I2C2 Transmit Register 00FF I2C2 Baud Rate Generator Register 0000 I2C2STAT 02F4 ACKTIM -- -- BCL I2C2ADD 02F6 -- -- -- -- -- -- I2C2 Address Register 0000 I2C2MSK 02F8 -- -- -- -- -- -- I2C2 Address Mask Register 0000 Legend: -- = unimplemented, read as `0'. Reset values are shown in hexadecimal. PIC24FJ128GB204 FAMILY DS30005009C-page 46 I2CTM REGISTER MAP TABLE 4-9: 2013-2015 Microchip Technology Inc. 2013-2015 Microchip Technology Inc. TABLE 4-10: File Name UART REGISTER MAP Addr Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 U1MODE 0500 UARTEN -- USIDL IREN RTSMD -- UEN1 U1STA 0502 UTXISEL1 UTXINV UTXISEL0 URXEN UTXBRK UTXEN UTXBF U1TXREG 0504 LAST -- -- -- -- -- -- U1RXREG 0506 -- -- -- -- -- -- -- U1BRG 0508 U1ADMD 050A Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 -- U1SCINT 050E -- -- U1GTC 0510 -- -- -- WAKE LPBACK ABAUD URXINV BRGH PDSEL1 PDSEL0 STSEL URXISEL1 URXISEL0 ADDEN RIDLE PERR FERR OERR URXDA -- -- -- -- -- TXRPT1 TXRPT0 CONV T0PD PTRCL SCEN -- -- WTCIF GTCIF -- PARIE RXRPTIE TXRPTIE -- -- WTCIE GTCIE -- -- -- -- GTC<8:0> -- -- -- -- -- -- -- -- U2MODE 0516 UARTEN -- USIDL IREN RTSMD -- UEN1 UEN0 WAKE LPBACK ABAUD U2STA 0518 UTXISEL1 UTXINV UTXISEL0 URXEN UTXBRK UTXEN UTXBF TRMT URXISEL1 URXISEL0 ADDEN -- -- -- -- -- -- U2RXREG 051C -- -- -- -- -- -- -- 0000 WTC<23:16> -- U2SCINT 0524 -- -- U2GTC 0526 -- -- -- PDSEL1 PDSEL0 STSEL RIDLE PERR FERR OERR URXDA -- -- U2RXREG<8:0> 0000 0000 -- -- -- -- -- TXRPT1 TXRPT0 CONV T0PD PTRCL SCEN -- -- WTCIF GTCIF -- PARIE RXRPTIE TXROTIE -- -- WTCIE GTCIE -- -- -- -- GTC<8:0> U2WTCL 0528 052A -- -- -- -- -- -- -- -- U3MODE 052C UARTEN -- USIDL IREN RTSMD -- UEN1 UEN0 WAKE LPBACK ABAUD U3STA 052E UTXISEL1 UTXINV UTXISEL0 URXEN UTXBRK UTXEN UTXBF TRMT URXISEL1 URXISEL0 ADDEN LAST -- -- -- -- -- -- U3RXREG 0532 -- -- -- -- -- -- -- DS30005009C-page 47 U3BRG 0534 U3ADMD 0536 U4MODE 0538 U4STA 053A UTXISEL1 UTXINV UTXISEL0 URXEN UTXBRK UTXEN UTXBF 0000 URXINV BRGH PDSEL1 PDSEL0 STSEL RIDLE PERR FERR OERR URXDA USIDL IREN RTSMD UEN1 U4TXREG 053C LAST -- -- -- -- -- -- U4RXREG 053E -- -- -- -- -- -- -- xxxx U3RXREG<8:0> 0000 0000 UEN0 WAKE LPBACK ABAUD URXINV BRGH PDSEL1 PDSEL0 STSEL TRMT URXISEL1 URXISEL0 ADDEN RIDLE PERR FERR OERR URXDA -- = unimplemented, read as `0'; x = unknown value on Reset. Reset values are shown in hexadecimal. 0000 0110 U4TXREG<8:0> xxxx U4RXREG<8:0> 0000 U4BRG<15:0> ADMMASK<7:0> 0110 U3TXREG<8:0> ADMADDR<7:0> -- 0000 0000 ADMMASK<7:0> -- 0000 0000 WTC<23:16> U3BRG<15:0> UARTEN 0000 0000 WTC<15:0> U3TXREG 0530 0110 xxxx -- RXRPTIF TXRPTIF 0000 U2TXREG<8:0> ADMADDR<7:0> U2WTCH Legend: BRGH 0000 ADMMASK<7:0> -- 0542 0000 URXINV U2BRG<15:0> U2SCCON 0522 0000 0000 ADMADDR<7:0> 0000 PIC24FJ128GB204 FAMILY LAST 0000 0000 WTC<15:0> U2TXREG 051A U4ADMD 0000 -- 0512 0540 0000 -- 0514 U4BRG U1RXREG<8:0> 0000 U1WTCL 0520 xxxx -- RXRPTIF TXRPTIF 0110 U1TXREG<8:0> ADMADDR<7:0> U1WTCH U2ADMD 0000 UEN0 TRMT ADMMASK<7:0> -- 051E All Resets U1BRG<15:0> U1SCCON 050C U2BRG Bit 0 File Name Addr SPI1 REGISTER MAP Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 -- SPISIDL DISSDO MODE32 MODE16 SMP CKE SSEN CKP MSTEN DISSDI DISSCK MCLKEN SPISGNEXT IGNROV IGNTUR AUDMONO URDTEN AUDMOD1 AUDMOD0 FRMEN FRMSYNC FRMPOL MSSEN FRMSYPW FRMCNT2 Bit 0 All Resets SPIFE ENHBUF 0000 FRMCNT1 FRMCNT0 0000 Bit 2 Bit 1 SPI1CON1L 0300 SPIEN SPI1CON1H 0302 AUDEN SPI1CON2L 0304 -- -- -- -- -- -- -- -- -- -- -- SPI1STATL 0308 -- -- -- FRMERR SPIBUSY -- -- SPITUR SRMT SPIROV SPIRBE -- SPITBE -- SPITBF SPIRBF 0028 SPI1STATH 030A -- -- RXELM5 RXELM4 RXELM3 RXELM2 RXELM1 RXELM0 -- -- TXELM5 TXELM4 TXELM3 TXELM2 TXELM1 TXELM0 0000 SPI1BUFL 030C SPI1BUFL<15:0> SPI1BUFH 030E SPI1BUFH<31:16> SPI1BRGL 0310 -- -- -- SPI1IMSKL 0314 -- -- -- FRMERREN BUSYEN -- -- SPITUREN SRMTEN SPIROVEN SPIRBEN -- SPITBEN -- SPITBFEN SPIRBFEN 0000 SPI1IMSKH 0316 RXWIEN -- RXMSK5 RXMSK4 RXMSK3 RXMSK2 RXMSK1 RXMSK0 TXWIEN -- TXMSK5 TXMSK4 TXMSK3 TXMSK2 TXMSK1 TXMSK0 0000 WLENGTH<4:0> 0000 0000 0000 SPI1BRG<12:0> 0000 SPI1URDTL 0318 SPI1URDTL<15:0> 0000 SPI1URDTH 031A SPI1URDTH<31:16> 0000 Legend: -- = unimplemented, read as `0'. Reset values are shown in hexadecimal. TABLE 4-12: File Name SPI2 REGISTER MAP Addr Bit 15 Bit 14 SPI2CON1L 031C SPIEN -- SPI2CON1H 031E AUDEN SPISGNEXT Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 All Resets SPISIDL DISSDO MODE32 MODE16 SMP CKE SSEN CKP MSTEN DISSDI DISSCK MCLKEN SPIFE ENHBUF 0000 IGNROV IGNTUR AUDMONO URDTEN AUDMOD1 AUDMOD0 FRMEN FRMSYNC FRMPOL MSSEN FRMSYPW FRMCNT2 FRMCNT1 FRMCNT0 0000 2013-2015 Microchip Technology Inc. SPI2CON2L 0320 -- -- -- -- -- -- -- -- -- -- -- WLENGTH<4:0> SPI2STATL 0324 -- -- -- FRMERR SPIBUSY -- -- SPITUR SRMT SPIROV SPIRBE -- SPITBE -- SPITBF SPIRBF 0028 SPI2STATH 0326 -- -- RXELM5 RXELM4 RXELM3 RXELM2 RXELM1 RXELM0 -- -- TXELM5 TXELM4 TXELM3 TXELM2 TXELM1 TXELM0 0000 SPI2BUFL 0328 SPI2BUFL<15:0> SPI2BUFH 032A SPI2BUFH<31:16> SPI2BRGL 032C -- -- -- SPI2IMSKL 0330 -- -- -- FRMERREN BUSYEN -- -- SPITUREN SRMTEN SPIROVEN SPIRBEN -- SPITBEN -- SPI2IMSKH 0332 RXWIEN -- RXMSK5 RXMSK4 RXMSK3 RXMSK2 RXMSK1 RXMSK0 TXWIEN -- TXMSK5 TXMSK4 TXMSK3 TXMSK2 0000 0000 0000 SPI2BRG<12:0> 0000 SPITBFEN SPIRBFEN TXMSK1 TXMSK0 0000 0000 SPI2URDTL 0334 SPI2URDTL<15:0> 0000 SPI2URDTH 0336 SPI2URDTH<31:16> 0000 Legend: -- = unimplemented, read as `0'. Reset values are shown in hexadecimal. PIC24FJ128GB204 FAMILY DS30005009C-page 48 TABLE 4-11: 2013-2015 Microchip Technology Inc. TABLE 4-13: File Name Addr SPI3CON1L 0338 SPI3CON1H 033A SPI3 REGISTER MAP Bit 15 Bit 14 SPIEN -- AUDEN SPISGNEXT Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 All Resets SPISIDL DISSDO MODE32 MODE16 SMP CKE SSEN CKP MSTEN DISSDI DISSCK MCLKEN SPIFE ENHBUF 0000 IGNROV IGNTUR AUDMONO URDTEN AUDMOD1 AUDMOD0 FRMEN FRMSYNC FRMPOL MSSEN FRMSYPW FRMCNT2 FRMCNT1 FRMCNT0 0000 SPI3CON2L 033C -- -- -- -- -- -- -- -- -- -- -- SPI3STATL 0340 -- -- -- FRMERR SPIBUSY -- -- SPITUR SRMT SPIROV SPIRBE -- SPITBE -- SPITBF SPIRBF 0028 SPI3STATH 0342 -- -- RXELM5 RXELM4 RXELM3 RXELM2 RXELM1 RXELM0 -- -- TXELM5 TXELM4 TXELM3 TXELM2 TXELM1 TXELM0 0000 SPI3BUFL 0344 SPI3BUFL<15:0> SPI3BUFH 0346 SPI3BUFH<31:16> SPI3BRGL 0348 -- -- -- SPI3IMSKL 034C -- -- -- FRMERREN BUSYEN -- -- SPITUREN SPI3IMSKH 034E RXWIEN -- RXMSK5 RXMSK4 RXMSK3 RXMSK2 RXMSK1 RXMSK0 SPI3URDTL 0350 0000 0000 0000 SPI3BRG<12:0> SPI3URDTH 0352 Legend: WLENGTH<4:0> 0000 SRMTEN SPIROVEN SPIRBEN -- SPITBEN -- SPITBFEN SPIRBFEN 0000 TXWIEN TXMSK5 TXMSK4 TXMSK3 TXMSK2 TXMSK1 TXMSK0 0000 -- SPI3URDTL<15:0> 0000 SPI3URDTH<31:16> 0000 -- = unimplemented, read as `0'. Reset values are shown in hexadecimal. PIC24FJ128GB204 FAMILY DS30005009C-page 49 File Name PORTA REGISTER MAP Addr Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 TRISA 0180 -- -- -- -- -- PORTA 0182 -- -- -- -- -- LATA 0184 -- -- -- -- ODCA 0186 -- -- -- -- Bit 10 Bit 9 Bit 8 Bit 7 Bit 3 Bit 2 Bit 1 Bit 0 All Resets Bit 6 Bit 5 Bit 4 TRISA<10:7> -- -- -- RA<10:7> -- -- -- LATA<10:7> -- -- -- LATA<3:0> xxxx -- ODA<10:7> -- -- -- ODA<3:0> 0000 Bit 6 Bit 5 Bit 4 TRISA<3:0> 078F RA<4:0> xxxx Legend: -- = unimplemented, read as `0'; x = unknown value on Reset. Reset values are shown in hexadecimal. TABLE 4-15: File Name Addr PORTB REGISTER MAP Bit 15 Bit 14 Bit 13 Bit 12 TRISB 018A TRISB<15:13> -- PORTB 018C RB<15:13> -- LATB 018E LATB<15:13> -- ODCB 0190 ODB<15:13> -- Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 TRISB<11:5> Bit 3 Bit 2 Bit 1 Bit 0 All Resets -- TRISB<3:0> EFEF LATB<11:5> -- LATB<3:0> xxxx ODB<11:5> -- ODB<3:0> 0000 RB<11:0> xxxx Legend: -- = unimplemented, read as `0'; x = unknown value on Reset. Reset values are shown in hexadecimal. TABLE 4-16: File Name PORTC REGISTER MAP Bit 9(1) Bit 8(1) Bit 7(1) Bit 6(1) Bit 5(1) Bit 4(1) Bit 3(1) Bit 2(1) Bit 1(1) Bit 0(1) All Resets 2013-2015 Microchip Technology Inc. Addr Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 TRISC 0194 -- -- -- -- -- -- TRISC<9:0> 03FF(2) PORTC 0196 -- -- -- -- -- -- RC<9:0> xxxx(2) LATC 0198 -- -- -- -- -- -- LATC<9:0> xxxx(2) ODCC 019A -- -- -- -- -- -- ODC<9:0> 0000(2) Legend: -- = unimplemented, read as `0'; x = unknown value on Reset. Reset values are shown in hexadecimal. Note 1: These bits are not available on 28-pin devices; read as `0'. 2: The Reset value for 44-pin devices is shown. TABLE 4-17: PAD CONFIGURATION REGISTER MAP (PADCFG1) File Name Addr Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 All Resets PADCFG1 01A0 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- PMPTTL 0000 Legend: -- = unimplemented, read as `0'. Reset values are shown in hexadecimal. PIC24FJ128GB204 FAMILY DS30005009C-page 50 TABLE 4-14: 2013-2015 Microchip Technology Inc. TABLE 4-18: File Name Addr A/D CONVERTER REGISTER MAP Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 All Resets 0200 A/D Data Buffer 0/Threshold for Channel 0 xxxx ADC1BUF1 0202 A/D Data Buffer 1/Threshold for Channel 1 xxxx ADC1BUF2 0204 A/D Data Buffer 2/Threshold for Channel 2 xxxx ADC1BUF3 0206 A/D Data Buffer 3/Threshold for Channel 3 xxxx ADC1BUF4 0208 A/D Data Buffer 4/Threshold for Channel 4 xxxx ADC1BUF5 020A A/D Data Buffer 5/Threshold for Channel 5 xxxx ADC1BUF6 020C A/D Data Buffer 6/Threshold for Channel 6 xxxx ADC1BUF7 020E A/D Data Buffer 7/Threshold for Channel 7 xxxx ADC1BUF8 0210 A/D Data Buffer 8/Threshold for Channel 8/Threshold for Channel 0 in Windowed Compare mode xxxx ADC1BUF9 0212 A/D Data Buffer 9/Threshold for Channel 9/Threshold for Channel 1 in Windowed Compare mode xxxx ADC1BUF10 0214 A/D Data Buffer 10/Threshold for Channel 10/Threshold for Channel 2 in Windowed Compare mode(1) xxxx ADC1BUF11 0216 A/D Data Buffer 11/Threshold for Channel 11/Threshold for Channel 3 in Windowed Compare mode(1) xxxx ADC1BUF12 0218 A/D Data Buffer 12/Threshold for Channel 12/Threshold for Channel 4 in Windowed Compare mode(1) xxxx ADC1BUF13 021A A/D Data Buffer 13 xxxx ADC1BUF14 021C A/D Data Buffer 14 xxxx ADC1BUF15 021E A/D Data Buffer 15 AD1CON1 0220 ADON -- ADSIDL DMABM DMAEN MODE12 FORM1 FORM0 SSRC3 SSRC2 SSRC1 SSRC0 -- ASAM SAMP DONE 0000 AD1CON2 0222 PVCFG1 PVCFG0 NVCFG0 OFFCAL BUFREGEN CSCNA -- -- BUFS SMPI4 SMPI3 SMPI2 SMPI1 SMPI0 BUFM ALTS 0000 AD1CON3 0224 ADRC EXTSAM PUMPEN SAMC4 SAMC3 SAMC2 SAMC1 SAMC0 ADCS7 ADCS6 ADCS5 ADCS4 ADCS3 ADCS2 ADCS1 ADCS0 0000 AD1CHS 0228 CH0NB2 CH0NB1 CH0SB4 CH0SB3 CH0SB2 CH0SB1 CH0SB0 CH0NA2 CH0NA1 CH0NA0 CH0SA4 CH0SA3 CH0SA2 CH0SA1 CH0SA0 0000 AD1CSSH 022A AD1CSSL 022C -- AD1CON4 022E -- -- -- -- -- -- -- -- -- -- -- -- -- AD1CON5 0230 ASEN LPEN CTMREQ BGREQ -- -- ASINT1 ASINT0 -- -- -- -- WM1 AD1CHITL 0234 -- -- -- CHH<12:9>(2) -- CHH<7:0> 0000 AD1CTMENL 0238 -- -- -- CTMEN<12:9>(2) -- CTMEN<7:0> 0000 AD1DMBUF 023A CH0NB0 CSS<31:27> -- -- CSS<14:9>(2) -- xxxx -- -- -- -- -- -- -- -- CSS<7:0> A/D Conversion Data Buffer (Extended Buffer mode) DS30005009C-page 51 Legend: -- = unimplemented, read as `0'; x = unknown value on Reset. Reset values are shown in hexadecimal. Note 1: These bits are unimplemented in 28-pin devices, read as `0'. 2: The CSS<12:10>, CHH<12:10> and CTMEN<12:10> bits are unimplemented in 28-pin devices, read as `0'. -- 0000 0000 DMABL<2:0> WM0 CM1 0000 CM0 0000 xxxx PIC24FJ128GB204 FAMILY ADC1BUF0 File Name Addr CTMUCON1 023C CTMU REGISTER MAP Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 CTMUEN -- CTMUSIDL TGEN EDGEN EDGSEQEN CTMUCON2 023E EDG1MOD EDG1POL EDG1SEL3 EDG1SEL2 EDG1SEL1 EDG1SEL0 CTMUICON Legend: 0240 ITRIM4 ITRIM3 ITRIM2 ITRIM1 ITRIM0 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 All Resets IDISSEN CTTRIG -- -- -- -- -- -- -- -- 0000 -- -- 0000 -- -- 0000 EDG2STAT EDG1STAT EDG2MOD EDG2POL EDG2SEL3 EDG2SEL2 EDG2SEL1 EDG2SEL0 IRNG1 IRNG0 -- -- -- -- -- -- -- = unimplemented, read as `0'. Reset values are shown in hexadecimal. TABLE 4-20: File Name ITRIM5 Bit 9 ANALOG CONFIGURATION REGISTER MAP Addr Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 All Resets ANCFG 019E -- -- -- -- -- -- -- -- -- -- -- -- -- -- VBG2EN VBGEN 0000 ANSA 0188 -- -- -- -- -- -- -- -- -- -- -- -- ANSA<3:0> ANSB 0192 -- -- -- ANSB9 -- -- ANSB6 -- -- ANSB<3:0> ANSC 019C -- -- -- -- -- -- -- -- -- ANSB<15:13> -- -- -- Legend: -- = unimplemented, read as `0'. Reset values are shown in hexadecimal. Note 1: These bits are unimplemented in 28-pin devices, read as `0'. -- ANSC<2:0>(1) 000F E24F 0007 PIC24FJ128GB204 FAMILY DS30005009C-page 52 TABLE 4-19: 2013-2015 Microchip Technology Inc. 2013-2015 Microchip Technology Inc. TABLE 4-21: File Name DMA REGISTER MAP Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 All Resets -- -- -- -- -- -- -- -- PRSSEL 0000 Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 DMACON 0450 DMAEN -- -- -- -- -- -- DMABUF 0452 DMA Transfer Data Buffer 0000 DMAL 0454 DMA High Address Limit Register 0000 DMAH 0456 DMA Low Address Limit Register DMACH0 0458 -- -- -- r -- NULLW RELOAD CHREQ DMAINT0 045A DBUFWF -- CHSEL5 CHSEL4 CHSEL3 CHSEL2 CHSEL1 CHSEL0 DMASRC0 045C DMA Channel 0 Source Address Register 0000 DMADST0 045E DMA Channel 0 Destination Address Register 0000 DMACNT0 0460 DMA Channel 0 Transaction Count Register DMACH1 0462 -- -- -- r -- NULLW RELOAD CHREQ DMAINT1 0464 DBUFWF -- CHSEL5 CHSEL4 CHSEL3 CHSEL2 CHSEL1 CHSEL0 DMASRC1 0466 DMA Channel 1 Source Address Register 0000 DMADST1 0468 DMA Channel 1 Destination Address Register 0000 DMACNT1 046A DMA Channel 1 Transaction Count Register DMACH2 046C -- -- -- r -- NULLW RELOAD CHREQ DMAINT2 046E DBUFWF -- CHSEL5 CHSEL4 CHSEL3 CHSEL2 CHSEL1 CHSEL0 DMASRC2 0470 DMA Channel 2 Source Address Register 0000 DMADST2 0472 DMA Channel 2 Destination Address Register 0000 DMACNT2 0474 DMA Channel 2 Transaction Count Register DMACH3 0476 -- -- -- r -- NULLW RELOAD CHREQ DMAINT3 0478 DBUFWF -- CHSEL5 CHSEL4 CHSEL3 CHSEL2 CHSEL1 CHSEL0 DMASRC3 047A DMA Channel 3 Source Address Register 0000 DMADST3 047C DMA Channel 3 Destination Address Register 0000 DMACNT3 047E DMA Channel 3 Transaction Count Register DMACH4 0480 -- -- -- r -- NULLW RELOAD CHREQ DMAINT4 0482 DBUFWF -- CHSEL5 CHSEL4 CHSEL3 CHSEL2 CHSEL1 CHSEL0 DMASRC4 0484 DMA Channel 4 Source Address Register 0000 DMADST4 0486 DMA Channel 4 Destination Address Register 0000 DMACNT4 0488 DMA Channel 4 Transaction Count Register DMACH5 048A -- -- -- r -- NULLW RELOAD CHREQ DMAINT5 048C DBUFWF -- CHSEL5 CHSEL4 CHSEL3 CHSEL2 CHSEL1 CHSEL0 DMASRC5 048E DMA Channel 5 Source Address Register 0000 DMADST5 0490 DMA Channel 5 Destination Address Register 0000 DMACNT5 0492 DMA Channel 5 Transaction Count Register 0001 Legend: -- = unimplemented, read as `0'; r = reserved bit. Reset values are shown in hexadecimal. 0000 SAMODE1 SAMODE0 DAMODE1 DAMODE0 TRMODE1 TRMODE0 HIGHIF LOWIF DONEIF HALFIF OVRUNIF -- LOWIF DONEIF HALFIF OVRUNIF -- LOWIF DONEIF HALFIF OVRUNIF -- LOWIF DONEIF HALFIF OVRUNIF -- LOWIF DONEIF HALFIF OVRUNIF -- LOWIF SIZE CHEN 0000 -- HALFEN 0000 SIZE CHEN 0000 -- HALFEN 0000 SIZE CHEN 0000 -- HALFEN 0000 SIZE CHEN 0000 -- HALFEN 0000 0001 SAMODE1 SAMODE0 DAMODE1 DAMODE0 TRMODE1 TRMODE0 HIGHIF 0000 0001 SAMODE1 SAMODE0 DAMODE1 DAMODE0 TRMODE1 TRMODE0 HIGHIF HALFEN 0001 SAMODE1 SAMODE0 DAMODE1 DAMODE0 TRMODE1 TRMODE0 HIGHIF 0000 -- 0001 SAMODE1 SAMODE0 DAMODE1 DAMODE0 TRMODE1 TRMODE0 HIGHIF CHEN 0001 SAMODE1 SAMODE0 DAMODE1 DAMODE0 TRMODE1 TRMODE0 HIGHIF SIZE DONEIF HALFIF OVRUNIF -- SIZE CHEN 0000 -- HALFEN 0000 PIC24FJ128GB204 FAMILY DS30005009C-page 53 Addr USB OTG REGISTER MAP File Name Addr Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 U1OTGIR 0400 -- -- -- -- -- -- -- -- IDIF T1MSECIF LSTATEIF U1OTGIE 0402 -- -- -- -- -- -- -- -- IDIE T1MSECIE LSTATEIE U1OTGSTAT 0404 -- -- -- -- -- -- -- -- ID -- LSTATE -- U1OTGCON 0406 -- -- -- -- -- -- -- -- DPPULUP DMPULUP U1PWRC Bit 7 Bit 6 Bit 5 Bit 4 Bit 0 All Resets -- VBUSVDIF 0000 -- VBUSVDIE 0000 SESEND -- VBUSVD 0000 OTGEN VBUSCHG VBUSDIS 0000 Bit 3 Bit 2 Bit 1 ACTVIF SESVDIF SESENDIF ACTVIE SESVDIE SESENDIE SESVD DPPULDWN DMPULDWN VBUSON 0408 -- -- -- -- -- -- -- -- UACTPND -- -- USLPGRD -- -- USUSPND USBPWR 00x0 U1IR 040A(1) -- -- -- -- -- -- -- -- STALLIF -- RESUMEIF IDLEIF TRNIF SOFIF UERRIF URSTIF 0000 -- -- -- -- -- -- -- -- STALLIF ATTACHIF(1) RESUMEIF IDLEIF TRNIF SOFIF UERRIF DETACHIF(1) 0000 U1IE 040C(1) -- -- -- -- -- -- -- -- STALLIE -- RESUMEIE IDLEIE TRNIE SOFIE UERRIE URSTIE 0000 -- -- -- -- -- -- -- -- STALLIE ATTACHIE(1) RESUMEIE IDLEIE TRNIE SOFIE UERRIE DETACHIE(1) 0000 U1EIR 040E(1) -- -- -- -- -- -- -- -- BTSEF -- DMAEF BTOEF DFN8EF CRC16EF CRC5EF PIDEF 0000 -- -- -- -- -- -- -- -- BTSEF -- DMAEF BTOEF DFN8EF CRC16EF EOFEF(1) PIDEF 0000 U1EIE (1) -- -- -- -- -- -- -- -- BTSEE -- DMAEE BTOEE DFN8EE CRC16EE CRC5EE PIDEE 0000 0000 0410 -- -- -- -- -- -- -- -- BTSEE -- DMAEE BTOEE DFN8EE CRC16EE EOFEE(1) PIDEE U1STAT 0412 -- -- -- -- -- -- -- -- ENDPT3 ENDPT2 ENDPT1 ENDPT0 DIR PPBI -- -- 0000 U1CON 0414(1) -- -- -- -- -- -- -- -- -- SE0 PKTDIS -- HOSTEN RESUME PPBRST USBEN 0000 -- -- -- -- -- -- -- -- JSTATE(1) SE0 TOKBUSY USBRST HOSTEN RESUME PPBRST SOFEN(1) 0000 0416 -- -- -- -- -- -- -- -- LSPDEN(1) ADDR6 ADDR5 ADDR4 ADDR3 ADDR2 ADDR1 ADDR0 0000 U1BDTP1 0418 -- -- -- -- -- -- -- -- USB Buffer Descriptor Table Base Address Register U1FRML 041A -- -- -- -- -- -- -- -- USB Frame Count Register Low Byte U1FRMH 041C -- -- -- -- -- -- -- -- U1TOK(2) 041E -- -- -- -- -- -- -- -- U1SOF(2) 0420 -- -- -- -- -- -- -- -- U1BDTP2 0422 -- -- -- -- -- -- -- -- USB Buffer Descriptor Table Base Address Register -- U1BDTP3 0424 -- -- -- -- -- -- -- -- USB Buffer Descriptor Table Base Address Register -- 0000 U1CNFG1 0426 -- -- -- -- -- -- -- -- PPB0 0000 U1CNFG2 0428 -- -- -- -- -- -- -- -- U1EP0 042A -- -- -- -- -- -- -- -- U1EP1 042C -- -- -- -- -- -- -- -- U1EP2 042E -- -- -- -- -- -- -- -- U1EP3 0430 -- -- -- -- -- -- -- -- U1ADDR 2013-2015 Microchip Technology Inc. Legend: -- = unimplemented, read as `0'. Reset values are shown in hexadecimal. Note 1: Alternate register or bit definitions when the module is operating in Host mode. 2: These registers are available in Host mode only. -- USB Frame Count Register High Byte PID3 PID2 PID1 PID0 EP3 EP2 0000 EP1 EP0 USB Start-of-Frame (SOF) Count Register UTEYE USBSIDL -- 0000 0000 -- 0000 0000 UOEMON -- -- -- -- PUVBUS -- UTRDIS 0000 LSPD(1) RETRYDIS(1) -- EPCONDIS EPRXEN EPTXEN EPSTALL EPHSHK 0000 -- -- -- EPCONDIS EPRXEN EPTXEN EPSTALL EPHSHK 0000 -- -- -- EPCONDIS EPRXEN EPTXEN EPSTALL EPHSHK 0000 -- -- -- EPCONDIS EPRXEN EPTXEN EPSTALL EPHSHK 0000 EXTI2CEN UVBUSDIS PPB1 0000 PIC24FJ128GB204 FAMILY DS30005009C-page 54 TABLE 4-22: 2013-2015 Microchip Technology Inc. TABLE 4-22: File Name USB OTG REGISTER MAP (CONTINUED) Addr Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 All Resets U1EP4 0432 -- -- -- -- -- -- -- -- -- -- -- EPCONDIS EPRXEN EPTXEN EPSTALL EPHSHK 0000 U1EP5 0434 -- -- -- -- -- -- -- -- -- -- -- EPCONDIS EPRXEN EPTXEN EPSTALL EPHSHK 0000 U1EP6 0436 -- -- -- -- -- -- -- -- -- -- -- EPCONDIS EPRXEN EPTXEN EPSTALL EPHSHK 0000 U1EP7 0438 -- -- -- -- -- -- -- -- -- -- -- EPCONDIS EPRXEN EPTXEN EPSTALL EPHSHK 0000 U1EP8 043A -- -- -- -- -- -- -- -- -- -- -- EPCONDIS EPRXEN EPTXEN EPSTALL EPHSHK 0000 U1EP9 043C -- -- -- -- -- -- -- -- -- -- -- EPCONDIS EPRXEN EPTXEN EPSTALL EPHSHK 0000 U1EP10 043E -- -- -- -- -- -- -- -- -- -- -- EPCONDIS EPRXEN EPTXEN EPSTALL EPHSHK 0000 U1EP11 0440 -- -- -- -- -- -- -- -- -- -- -- EPCONDIS EPRXEN EPTXEN EPSTALL EPHSHK 0000 U1EP12 0442 -- -- -- -- -- -- -- -- -- -- -- EPCONDIS EPRXEN EPTXEN EPSTALL EPHSHK 0000 U1EP13 0444 -- -- -- -- -- -- -- -- -- -- -- EPCONDIS EPRXEN EPTXEN EPSTALL EPHSHK 0000 U1EP14 0446 -- -- -- -- -- -- -- -- -- -- -- EPCONDIS EPRXEN EPTXEN EPSTALL EPHSHK 0000 U1EP15 0448 -- -- -- -- -- -- -- -- -- -- -- EPCONDIS EPRXEN EPTXEN EPSTALL EPHSHK 0000 TABLE 4-23: File Name ENHANCED PARALLEL MASTER/SLAVE PORT REGISTER MAP DS30005009C-page 55 Addr Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 PMCON1 0128 PMPEN -- PSIDL PMCON2 012A PMPBUSY -- ERROR ADRMUX1 ADRMUX0 -- MODE1 MODE0 TIMEOUT -- -- -- -- PMCON3 012C PTWREN PTRDEN PTBE1EN PTBE0EN -- PMCON4 012E -- PTEN14 -- -- -- -- PMCS1CF 0130 CSDIS CSP CSPTEN BEP -- WRSP PMCS1BS 0132 PMCS1MD 0134 ACKM1 ACKM0 PMCS2CF 0136 CSDIS CSP PMCS2BS 0138 PMCS2MD 013A PMDOUT1 013C PMDOUT2 AWAITM1 AWAITM0 AWAITE Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 All Resets CSF1 CSF0 ALP ALMODE -- BUSKEEP IRQM1 IRQM0 0000 RADDR23 RADDR22 RADDR21 RADDR20 RADDR19 RADDR18 RADDR17 RADDR16 -- CSPTEN BEP RDSP SM ACKP AMWAIT0 -- -- -- -- WRSP RDSP SM -- ACKP 0000 PTSZ1 PTSZ0 -- -- -- -- -- 0000 -- -- -- BASE11 -- -- -- 0200 0000 PTSZ1 PTSZ0 -- -- -- -- -- 0000 -- -- -- BASE11 -- -- -- 0600 xxxx EPMP Data Out Register 2<15:8> EPMP Data Out Register 2<7:0> xxxx PMDIN1 0140 EPMP Data In Register 1<15:8> EPMP Data In Register 1<7:0> xxxx PMDIN2 0142 EPMP Data In Register 2<15:8> EPMP Data In Register 2<7:0> PMSTAT 0144 IB2F IB1F -- 0000 013E IB3F -- 0000 0000 -- -- -- EPMP Data Out Register 1<7:0> -- AMWAIT0 -- EPMP Data Out Register 1<15:8> IBOV AMWAIT2 AMWAIT1 -- DWAITB1 DWAITB0 DWAITM3 DWAITM2 DWAITM1 DWAITM0 DWAITE1 DWAITE0 IBF ACKM0 -- DWAITB1 DWAITB0 DWAITM3 DWAITM2 DWAITM1 DWAITM0 DWAITE1 DWAITE0 BASE<23:15> ACKM1 -- PTEN<9:0> BASE<23:15> AMWAIT2 AMWAIT1 -- IB0F Legend: -- = unimplemented, read as `0'; x = unknown value on Reset. Reset values are shown in hexadecimal. OBE OBUF -- -- OB3E OB2E xxxx OB1E OB0E 008F PIC24FJ128GB204 FAMILY Legend: -- = unimplemented, read as `0'. Reset values are shown in hexadecimal. Note 1: Alternate register or bit definitions when the module is operating in Host mode. 2: These registers are available in Host mode only. REAL-TIME CLOCK AND CALENDAR (RTCC) REGISTER MAP File Name Addr ALRMVAL 011E ALCFGRPT 0120 RTCVAL 0122 RCFGCAL 0124 RTCEN RTCPWC 0126 PWCEN PWCPOL Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 ALRMEN CHIME AMASK3 AMASK2 AMASK1 Bit 9 Bit 8 Bit 7 Bit 6 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 ARPT5 ARPT4 ARPT3 ARPT2 ARPT1 ARPT0 0000 Alarm Value Register Window Based on ALRMPTR<1:0> AMASK0 ALRMPTR1 ALRMPTR0 ARPT7 ARPT6 xxxx RTCC Value Register Window Based on RTCPTR<1:0> -- RTCWREN RTCSYNC HALFSEC PWCPRE PWSPRE RTCLK1 All Resets Bit 5 xxxx RTCOE RTCPTR1 RTCPTR0 CAL7 CAL6 CAL5 CAL4 CAL3 CAL2 CAL1 CAL0 Note 1 RTCLK0 RTCOUT1 RTCOUT0 -- -- -- -- -- -- -- -- Note 1 Bit 1 Bit 0 All Resets Legend: -- = unimplemented, read as `0'; x = unknown value on Reset. Reset values are shown in hexadecimal. Note 1: The status of the RCFGCAL and RTCPWC registers on POR is `0000' and on other Resets, it is unchanged. TABLE 4-25: File Name DATA SIGNAL MODULATOR (DSM) REGISTER MAP Addr Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 MDCON 02FA MDEN -- MDSIDL -- -- -- -- -- -- MDOE MDSLR MDOPOL -- -- -- MDBIT 0020 MDSRC 02FC -- -- -- -- -- -- -- -- SODIS -- -- -- MS3 MS2 MS1 MS0 0000 MDCAR 02FE CHODIS CHPOL CHSYNC -- CH3 CH2 CH1 CH0 CLODIS CLPOL CLSYNC -- CL3 CL2 CL1 CL0 0000 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 All Resets C3EVT C2EVT C1EVT Legend: -- = unimplemented, read as `0'. Reset values are shown in hexadecimal. TABLE 4-26: File Name COMPARATOR REGISTER MAP Addr Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 2013-2015 Microchip Technology Inc. CMSTAT 0242 CMIDL -- -- -- CVRCON 0244 -- -- -- -- -- CM1CON 0246 CON COE CPOL -- -- -- CEVT CM2CON 0248 CON COE CPOL -- -- -- CEVT CM3CON 024A CON COE CPOL -- -- -- CEVT -- -- -- -- -- C3OUT C2OUT C1OUT 0000 CVREN CVROE CVRSS CVR4 CVR3 CVR2 CVR1 CVR0 0000 COUT EVPOL1 EVPOL0 -- CREF -- -- CCH1 CCH0 0000 COUT EVPOL1 EVPOL0 -- CREF -- -- CCH1 CCH0 0000 COUT EVPOL1 EVPOL0 -- CREF -- -- CCH1 CCH0 0000 CVREFP CVREFM1 CVREFM0 Legend: -- = unimplemented, read as `0'. Reset values are shown in hexadecimal. PIC24FJ128GB204 FAMILY DS30005009C-page 56 TABLE 4-24: 2013-2015 Microchip Technology Inc. TABLE 4-27: File Name CRC REGISTER MAP Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 15 Bit 14 Bit 13 CRCCON1 0158 CRCEN -- CSIDL CRCCON2 015A -- -- -- CRCXORL 015C CRCXORH 015E X<31:16> 0000 CRCDATL 0160 CRC Data Input Register Low xxxx CRCDATH 0162 CRC Data Input Register High xxxx CRCWDATL 0164 CRC Result Register Low xxxx CRCWDATH 0166 CRC Result Register High xxxx VWORD4 VWORD3 VWORD2 VWORD1 VWORD0 CRCFUL CRCMPT CRCISEL CRCGO LENDIAN DWIDTH4 DWIDTH3 DWIDTH2 DWIDTH1 DWIDTH0 PLEN4 -- -- -- PLEN3 Bit 1 Bit 0 All Resets Addr -- -- -- 0040 PLEN2 PLEN1 PLEN0 0000 -- 0000 X<15:1> Legend: -- = unimplemented, read as `0'; x = unknown value on Reset. Reset values are shown in hexadecimal. TABLE 4-28: PERIPHERAL PIN SELECT REGISTER MAP Addr Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 RPINR0 038C -- -- INT1R5 INT1R4 INT1R3 INT1R2 INT1R1 INT1R0 -- -- OCTRIG1R5 RPINR1 038E -- -- INT3R5 INT3R4 INT3R3 INT3R2 INT3R1 INT3R0 -- -- INT2R5 INT2R4 INT2R3 INT2R2 INT2R1 INT2R0 3F3F RPINR2 0390 -- -- OCTRIG2R5 -- -- INT4R5 INT4R4 INT4R3 INT4R2 INT4R1 INT4R0 3F3F RPINR7 039A -- -- IC2R5 IC2R4 IC2R3 IC2R2 IC2R1 IC2R0 -- -- IC1R5 IC1R4 IC1R3 IC1R2 IC1R1 IC1R0 3F3F RPINR8 039C -- -- IC4R5 IC4R4 IC4R3 IC4R2 IC4R1 IC4R0 -- -- IC3R5 IC3R4 IC3R3 IC3R2 IC3R1 IC3R0 3F3F RPINR9 039E -- -- IC6R5 IC6R4 IC6R3 IC6R2 IC6R1 IC6R0 -- -- IC5R5 IC5R4 IC5R3 IC5R2 IC5R1 IC5R0 3F3F RPINR11 03A2 -- -- OCFBR5 OCFBR4 OCFBR3 OCFBR2 OCFBR1 OCFBR0 -- -- OCFAR5 OCFAR4 OCFAR3 OCFAR2 OCFAR1 OCFAR0 3F3F RPINR17 03AE -- -- -- -- -- -- -- -- -- -- 3F00 RPINR18 03B0 -- -- U1CTSR5 U1CTSR4 U1CTSR3 U1CTSR2 U1CTSR1 U1CTSR0 -- -- U1RXR5 U1RXR4 U1RXR3 U1RXR2 U1RXR1 U1RXR0 3F3F RPINR19 03B2 -- -- U2CTSR5 U2CTSR4 U2CTSR3 U2CTSR2 U2CTSR1 U2CTSR0 -- -- U2RXR5 U2RXR4 U2RXR3 U2RXR2 U2RXR1 U2RXR0 3F3F RPINR20 03B4 -- -- SCK1R5 SCK1R4 SCK1R3 SCK1R2 SCK1R1 SCK1R0 -- -- SDI1R5 SDI1R4 SDI1R3 SDI1R2 SDI1R1 SDI1R0 3F3F RPINR21 03B6 -- -- U3CTSR5 U3CTSR4 U3CTSR3 U3CTSR2 U3CTSR1 U3CTSR0 -- -- SS1R5 SS1R4 SS1R3 SS1R2 SS1R1 SS1R0 3F3F RPINR22 03B8 -- -- SCK2R5 SCK2R4 SCK2R3 SCK2R2 SCK2R1 SCK2R0 -- -- SDI2R5 SDI2R4 SDI2R3 SDI2R2 SDI2R1 SDI2R0 3F3F RPINR23 03BA -- -- TMRCKR5 TMRCKR4 TMRCKR3 TMRCKR2 TMRCKR1 TMRCKR0 -- -- SS2R5 SS2R4 SS2R3 SS2R2 SS2R1 SS2R0 3F3F RPINR27 03C2 -- -- U4CTSR5 U4CTSR4 U4CTSR3 U4CTSR2 U4CTSR1 U4CTSR0 -- -- U4RXR5 U4RXR4 U4RXR3 U4RXR2 U4RXR1 U4RXR0 3F3F RPINR28 03C4 -- -- SCK3R5 SCK3R4 SCK3R3 SCK3R2 SCK3R1 SCK3R0 -- -- SDI3R5 SDI3R4 SDI3R3 SDI3R2 SDI3R1 SDI3R0 3F3F RPINR29 03C6 -- -- -- -- -- -- -- -- -- -- SS3R<5:0> RPINR30 03C8 -- -- -- -- -- -- -- -- -- -- MDMIR<5:0> RPINR31 03CA -- -- MDC2R5 MDC2R4 MDC2R3 MDC2R2 MDC2R1 MDC2R0 -- -- Legend: -- = unimplemented, read as `0'. Reset values are shown in hexadecimal. OCTRIG2R4 OCTRIG2R3 OCTRIG2R2 OCTRIG2R1 OCTRIG2R0 U3RXR<5:0> MDC1R5 Bit 4 Bit 3 OCTRIG1R4 OCTRIG1R3 MDC1R4 MDC1R3 Bit 2 Bit 1 Bit 0 OCTRIG1R2 OCTRIG1R1 OCTRIG1R0 MDC1R2 All Resets 3F3F 003F 003F MDC1R1 MDC1R0 3F3F PIC24FJ128GB204 FAMILY DS30005009C-page 57 File Name PERIPHERAL PIN SELECT REGISTER MAP (CONTINUED) File Name Addr Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 All Resets RPOR0 03D6 -- -- RP1R5 RP1R4 RP1R3 RP1R2 RP1R1 RP1R0 -- -- RP0R5 RP0R4 RP0R3 RP0R2 RP0R1 RP0R0 0000 RPOR1 03D8 -- -- RP3R5 RP3R4 RP3R3 RP3R2 RP3R1 RP3R0 -- -- RP2R5 RP2R4 RP2R3 RP2R2 RP2R1 RP2R0 0000 RPOR2 03DA -- -- -- -- -- -- -- -- -- -- 0000 RPOR3 03DC -- -- RP7R5 RP7R4 RP7R3 RP7R2 RP7R1 RP7R0 -- -- RP6R5 RP6R4 RP6R3 RP6R2 RP6R1 RP6R0 0000 RPOR4 03DE -- -- RP9R5 RP9R4 RP9R3 RP9R2 RP9R1 RP9R0 -- -- RP8R5 RP8R4 RP8R3 RP8R2 RP8R1 RP8R0 0000 RPOR5 03E0 -- -- RP11R5 RP11R4 RP11R3 RP11R2 RP11R1 RP11R0 -- -- RP10R5 RP10R4 RP10R3 RP10R2 RP10R1 RP10R0 0000 RPOR6 03E2 -- -- -- -- -- -- -- -- -- -- 0000 RPOR7 03E4 -- -- RP15R5 RP15R4 RP15R3 RP15R2 RP15R1 RP15R0 -- -- RP14R5 RP14R4 RP14R3 RP14R2 RP14R1 RP14R0 0000 RPOR8 03E6 -- -- RP17R5 RP17R4 RP17R3 RP17R2 RP17R1 RP17R0 -- -- RP16R5 RP16R4 RP16R3 RP16R2 RP16R1 RP16R0 0000 RPOR9 03E8 -- -- RP19R5 RP19R4 RP19R3 RP19R2 RP19R1 RP19R0 -- -- RP18R5 RP18R4 RP18R3 RP18R2 RP18R1 RP18R0 0000 RPOR10 03EA -- -- RP21R5 RP21R4 RP21R3 RP21R2 RP21R1 RP21R0 -- -- RP20R5 RP20R4 RP20R3 RP20R2 RP20R1 RP20R0 0000 RPOR11 03EC -- -- RP23R5 RP23R4 RP23R3 RP23R2 RP23R1 RP23R0 -- -- RP22R5 RP22R4 RP22R3 RP22R2 RP22R1 RP22R0 0000 RPOR12 03EE -- -- RP25R5 RP25R4 RP25R3 RP25R2 RP25R1 RP25R0 -- -- RP24R5 RP24R4 RP24R3 RP24R2 RP24R1 RP24R0 0000 Legend: -- = unimplemented, read as `0'. Reset values are shown in hexadecimal. TABLE 4-29: File Name RP5R<5:0> RP13R<5:0> SYSTEM CONTROL (CLOCK AND RESET) REGISTER MAP Addr Bit 15 Bit 14 RCON 0108 TRAPR IOPUWR OSCCON 0100 -- COSC2 CLKDIV 0102 ROI DOZE2 DOZE1 DOZE0 OSCTUN 0106 STEN -- STSIDL STSRC REFOCONL 0168 ROEN -- ROSIDL ROOUT ROSLP -- REFOCONH 016A Bit 13 Bit 10 Bit 9 Bit 8 DPSLP CM VREGS NOSC2 NOSC1 NOSC0 Bit 6 EXTR SWR Bit 4 All Resets IDLE BOR POR Note 1 2013-2015 Microchip Technology Inc. -- RETEN -- COSC0 -- DOZEN RCDIV2 RCDIV1 RCDIV0 CPDIV1 CPDIV0 PLLEN -- -- -- -- -- 0100 STLOCK STLPOL STOR STORPOL -- -- TUN5 TUN4 TUN3 TUN2 TUN1 TUN0 0000 ROSWEN ROACTIVE -- -- -- -- ROSEL3 ROSEL2 -- -- -- -- -- -- -- HLVDL3 HLVDL2 HLVDL1 HLVDL0 0000 VDDBOR VDDPOR VBPOR VBAT Note 1 SWDTEN WDTO LOCK -- Bit 3 Bit 0 COSC1 CLKLOCK IOLOCK Bit 5 Bit 1 Bit 11 -- Bit 7 Bit 2 Bit 12 SLEEP CF POSCEN SOSCEN OSWEN Note 2 ROSEL1 ROSEL0 0000 RODIV<14:0> REFOTRIML 016C ROTRIM<15:7> 0000 HLVDCON 010C HLVDEN -- LSIDL -- -- -- -- -- VDIR BGVST IRVST -- RCON2 010A -- -- -- -- -- -- -- -- -- -- -- r Legend: -- = unimplemented, read as `0'; r = reserved bit. Reset values are shown in hexadecimal. Note 1: The Reset value of the RCON register is dependent on the type of Reset event. For more information, refer to Section 7.0 "Resets". 2: The Reset value of the OSCCON register is dependent on both the type of Reset event and the device configuration. For more information, refer to Section 9.0 "Oscillator Configuration". 0000 PIC24FJ128GB204 FAMILY DS30005009C-page 58 TABLE 4-28: 2013-2015 Microchip Technology Inc. TABLE 4-30: DEEP SLEEP REGISTER MAP File Name Addr Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 DSCON 010E DSEN -- -- -- -- -- -- DSWAKE 0110 -- -- -- -- -- -- -- DSGPR0 0112 Deep Sleep Semaphore Data 0 Register 0000(1) DSGPR1 0114 Deep Sleep Semaphore Data 1 Register 0000(1) Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 -- -- -- -- -- DSINT0 DSFLT -- -- DSWDT Bit 2 Bit 1 Bit 0 All Resets -- r DSBOR RELEASE 0000(1) DSRTCC DSMCLR -- -- 0000(1) Bit 3 Legend: -- = unimplemented, read as `0'; r = reserved bit. Reset values are shown in hexadecimal. Note 1: These registers are only reset on a VDD POR event. TABLE 4-31: File Name Addr CRYPTOGRAPHIC ENGINE REGISTER MAP Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 -- CRYSIDL ROLLIE DONEIE FREEIE -- CRYGO OPMOD3 OPMOD2 OPMOD1 Bit 3 Bit 2 Bit 1 Bit 0 CRYCONL 01A4 CRYON CRYCONH 01A6 -- CRYSTAT 01A8 -- -- -- -- -- -- -- -- CRYBSY CRYOTP 01AC -- -- -- -- -- -- -- -- PGMTST CRYTXTA 01B0 Cryptographic Text Register A (128 bits wide) xxxx CRYKEY 01C0 Cryptographic Key Register (256 bits wide, write-only) xxxx CRYTXTB 01E0 Cryptographic Text Register B (128 bits wide) xxxx CRYTXTC 01F0 Cryptographic Text Register C (128 bits wide) xxxx KEYSRC3 KEYSRC2 KEYSRC1 KEYSRC0 0000 -- MODFAIL KEYFAIL PGMFAIL 0000 KEYPG2 KEYPG1 KEYPG0 CRYWR 0020 TXTABSY CRYABRT ROLLOVR OTPIE CRYREAD KEYPG3 -- = unimplemented, read as `0'; x = unknown value on Reset. Reset values are shown in hexadecimal. TABLE 4-32: File Name -- 0000 NVM REGISTER MAP Addr Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 NVMCON 0760 WR WREN WRERR -- -- -- -- -- -- ERASE -- NVMKEY 0766 -- -- -- -- -- -- -- -- Bit 4 -- Bit 3 Bit 2 Bit 1 Bit 0 All Resets NVMOP3 NVMOP2 NVMOP1 NVMOP0 0000(1) NVMKEY Register<7:0> Legend: -- = unimplemented, read as `0'. Reset values are shown in hexadecimal. Note 1: The Reset value shown is for POR only. The value on other Reset states is dependent on the state of the memory write or erase operations at the time of Reset. 0000 DS30005009C-page 59 PIC24FJ128GB204 FAMILY Legend: CTRSIZE6 CTRSIZE5 CTRSIZE4 CTRSIZE3 CTRSIZE2 CTRSIZE1 CTRSIZE0 SKEYSEL KEYMOD1 KEYMOD0 OPMOD0 CPHRSEL CPHRMOD2 CPHRMOD1 CPHRMOD0 All Resets File Name PERIPHERAL MODULE DISABLE (PMD) REGISTER MAP Addr Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 PMD1 0170 T5MD T4MD T3MD T2MD T1MD -- PMD2 0172 -- -- IC6MD IC5MD IC4MD IC3MD PMD3 0174 -- -- -- -- DSMMD PMD4 0176 -- -- -- -- -- -- -- I2C1MD IC2MD IC1MD -- -- -- PMPMD CRCMD -- -- PMD6 017A -- -- -- -- -- -- PMD7 017C -- -- -- -- -- -- -- -- -- -- -- -- -- -- PMD8 017E -- -- -- -- -- -- -- -- -- -- CMPMD RTCCMD Legend: -- = unimplemented, read as `0'. Reset values are shown in hexadecimal. Bit 5 Bit 4 Bit 3 U2MD U1MD SPI2MD SPI1MD -- OC6MD OC5MD OC4MD -- -- -- U3MD -- UPWMMD U4MD -- -- -- DMA1MD DMA0MD -- -- Bit 2 All Resets Bit 1 Bit 0 -- -- ADC1MD 0000 OC3MD OC2MD OC1MD 0000 I2C2MD -- REFOMD CTMUMD HLVDMD USB1MD 0000 0000 -- -- -- SPI3MD 0000 -- -- -- -- 0000 -- -- -- CRYMD 0000 PIC24FJ128GB204 FAMILY DS30005009C-page 60 TABLE 4-33: 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 4.2.5 EXTENDED DATA SPACE (EDS) The data addressing range of PIC24FJ128GB204 family devices depends on the version of the Enhanced Parallel Master Port implemented on a particular device; this is, in turn, a function of device pin count. Table 4-34 lists the total memory accessible by each of the devices in this family. For more details on accessing external memory using EPMP, refer to the "dsPIC33/PIC24 Family Reference Manual", "Enhanced Parallel Master Port (EPMP)" (DS39730). The Extended Data Space (EDS) allows PIC24F devices to address a much larger range of data than would otherwise be possible with a 16-bit address range. EDS includes any additional internal data memory not directly accessible by the lower 32-Kbyte data address space and any external memory through the Enhanced Parallel Master Port (EPMP). In addition, EDS also allows read access to the program memory space. This feature is called Program Space Visibility (PSV) and is discussed in detail in Section 4.3.3 "Reading Data from Program Memory Using EDS". . TABLE 4-34: Family Figure 4-4 displays the entire EDS space. The EDS is organized as pages, called EDS pages, with one page equal to the size of the EDS window (32 Kbytes). A particular EDS page is selected through the Data Space Read register (DSRPAG) or Data Space Write register (DSWPAG). For PSV, only the DSRPAG register is used. The combination of the DSRPAG register value and the 16-bit wide data address forms a 24-bit Effective Address (EA). FIGURE 4-4: TOTAL ACCESSIBLE DATA MEMORY Internal RAM External RAM Access Using EPMP PIC24FJXXXGB204 8K Up to 16 Mbytes PIC24FJXXXGB202 8K Up to 64K Note: Accessing Page 0 in the EDS window will generate an address error trap as Page 0 is the base data memory (data locations, 0800h to 7FFFh, in the lower Data Space). EXTENDED DATA SPACE (EDS) Special Function Registers 0000h 0800h Internal Data Memory Space (up to 30 Kbytes) EDS Pages 8000h 32-Kbyte EDS Window FFFEh 008000h FF8000h 000000h 7F8000h 000001h 7F8001h External Memory Access Using EPMP(1) External Memory Access Using EPMP(1) Program Space Access (Lower Word) Program Space Access (Lower Word) Program Space Access (Upper Word) Program Space Access (Upper Word) 00FFFEh FFFFFEh 007FFEh 7FFFFEh 007FFFh 7FFFFFh DSxPAG = 001h DSx PAG = 1FFh DSRPAG = 00h DSRPAG = 2FFh DSRPAG = 300h DSRPAG = 3FFh EPMP Memory Space(1) Note 1: Program Memory The range of addressable memory available is dependent on the device pin count and EPMP implementation. 2013-2015 Microchip Technology Inc. DS30005009C-page 61 PIC24FJ128GB204 FAMILY 4.2.5.1 Data Read from EDS In order to read the data from the EDS space first, an Address Pointer is set up by loading the required EDS page number into the DSRPAG register and assigning the offset address to one of the W registers. Once the above assignment is done, the EDS window is enabled by setting bit 15 of the Working register assigned with the offset address; then, the contents of the pointed EDS location can be read. Example 4-1 shows how to read a byte, word and double-word from EDS. Note: Figure 4-5 illustrates how the EDS space address is generated for read operations. All read operations from EDS space have an overhead of one instruction cycle. Therefore, a minimum of two instruction cycles is required to complete an EDS read. EDS reads under the REPEAT instruction; the first two accesses take three cycles and the subsequent accesses take one cycle. When the Most Significant bit of the EA is `1' and DSRPAG<9> = 0, the lower 9 bits of DSRPAG are concatenated to the lower 15 bits of the EA to form a 24-bit EDS space address for read operations. FIGURE 4-5: EDS ADDRESS GENERATION FOR READ OPERATIONS Select 9 Wn 1 0 8 DSRPAG Reg 15 Bits 9 Bits 24-Bit EA 0 = Extended SRAM and EPMP Wn<0> is Byte Select EXAMPLE 4-1: EDS READ CODE IN ASSEMBLY ; Set the EDS page from where mov #0x0002, w0 mov w0, DSRPAG mov #0x0800, w1 bset w1, #15 the data to be read ;page 2 is selected for read ;select the location (0x800) to be read ;set the MSB of the base address, enable EDS mode ;Read a byte from the selected location mov.b [w1++], w2 ;read Low byte mov.b [w1++], w3 ;read High byte ;Read a word from the selected location mov [w1], w2 ; ;Read Double - word from the selected location mov.d [w1], w2 ;two word read, stored in w2 and w3 DS30005009C-page 62 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 4.2.5.2 Data Write into EDS In order to write data to EDS space, such as in EDS reads, an Address Pointer is set up by loading the required EDS page number into the DSWPAG register and assigning the offset address to one of the W registers. Once the above assignment is done, then the EDS window is enabled by setting bit 15 of the Working register, assigned with the offset address, and the accessed location can be written. Figure 4-2 illustrates how the EDS space address is generated for write operations. 0x8000. While developing code in assembly, care must be taken to update the Data Space Page registers when an Address Pointer crosses the page boundary. The `C' compiler keeps track of the addressing, and increments or decrements the Page registers accordingly, while accessing contiguous data memory locations. Note 1: All write operations to EDS are executed in a single cycle. 2: Use of Read-Modify-Write operation on any EDS location under a REPEAT instruction is not supported. For example, BCLR, BSW, BTG, RLC f, RLNC f, RRC f, RRNC f, ADD f, SUB f, SUBR f, AND f, IOR f, XOR f, ASR f, ASL f. When the MSBs of EA are `1', the lower 9 bits of DSWPAG are concatenated to the lower 15 bits of the EA to form a 24-bit EDS address for write operations. Example 4-2 shows how to write a byte, word and double-word to EDS. 3: Use the DSRPAG register while performing Read-Modify-Write operations. The Data Space Page registers (DSRPAG/DSWPAG) do not update automatically while crossing a page boundary when the rollover happens from 0xFFFF to FIGURE 4-6: EDS ADDRESS GENERATION FOR WRITE OPERATIONS Select 8 Wn 1 0 DSWPAG Reg 9 Bits 15 Bits 24-Bit EA Wn<0> is Byte Select EXAMPLE 4-2: EDS WRITE CODE IN ASSEMBLY ; Set the EDS page where the data to be written mov #0x0002, w0 mov w0, DSWPAG ;page 2 is selected for write mov #0x0800, w1 ;select the location (0x800) to be written bset w1, #15 ;set the MSB of the base address, enable EDS mode ;Write a byte to the selected location mov #0x00A5, w2 mov #0x003C, w3 mov.b w2, [w1++] ;write Low byte mov.b w3, [w1++] ;write High byte ;Write a word to the selected location mov #0x1234, w2 ; mov w2, [w1] ; ;Write a Double - word to the selected location mov #0x1122, w2 mov #0x4455, w3 mov.d w2, [w1] ;2 EDS writes 2013-2015 Microchip Technology Inc. DS30005009C-page 63 PIC24FJ128GB204 FAMILY TABLE 4-35: EDS MEMORY ADDRESS WITH DIFFERENT PAGES AND ADDRESSES DSRPAG (Data Space Read Register) Source/Destination Address while Indirect Addressing 0000h to 1FFFh 000000h to 001FFFh 2000h to 7FFFh 002000h to 007FFFh x(1) 001h 001h 008000h to 00FFFEh 002h 002h 010000h to 017FFEh 003h * * * * * 1FFh 003h * * * * * 1FFh 018000h to 0187FEh * * * * FF8000h to FFFFFEh 000h 000h 8000h to FFFFh Invalid Address Comment Near Data Space(2) EPMP Memory Space Address Error Trap(3) If the source/destination address is below 8000h, the DSRPAG and DSWPAG registers are not considered. This Data Space can also be accessed by Direct Addressing. When the source/destination address is above 8000h and DSRPAG/DSWPAG are `0', an address error trap will occur. A PC push during exception processing will concatenate the SRL Register to the MSB of the PC prior to the push. The Stack Pointer Limit Value (SPLIM) register, associated with the Stack Pointer, sets an upper address boundary for the stack. SPLIM is uninitialized at Reset. As is the case for the Stack Pointer, SPLIM<0> is forced to `0' as all stack operations must be word-aligned. Whenever an EA is generated using W15 as a Source or Destination Pointer, the resulting address is compared with the value in SPLIM. If the contents of the Stack Pointer (W15) and the SPLIM register are equal, and a push operation is performed, a stack error trap will not occur. The stack error trap will occur on a subsequent push operation. Thus, for DS30005009C-page 64 example, if it is desirable to cause a stack error trap when the stack grows beyond address, 2000h in RAM, initialize the SPLIM with the value, 1FFEh. Similarly, a Stack Pointer underflow (stack error) trap is generated when the Stack Pointer address is found to be less than 0800h. This prevents the stack from interfering with the SFR space. A write to the SPLIM register should not be immediately followed by an indirect read operation using W15. FIGURE 4-7: 0000h Stack Grows Towards Higher Address SOFTWARE STACK Apart from its use as a Working register, the W15 register in PIC24F devices is also used as a Software Stack Pointer (SSP). The pointer always points to the first available free word and grows from lower to higher addresses. It predecrements for stack pops and post-increments for stack pushes, as shown in Figure 4-7. Note that for a PC push during any CALL instruction, the MSB of the PC is zero-extended before the push, ensuring that the MSB is always clear. Note: 24-Bit EA Pointing to EDS x(1) Note 1: 2: 3: 4.2.6 DSWPAG (Data Space Write Register) 15 CALL STACK FRAME 0 PC<15:0> 000000000 PC<22:16> <Free Word> W15 (before CALL) W15 (after CALL) POP : [--W15] PUSH: [W15++] 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 4.3 Interfacing Program and Data Memory Spaces 4.3.1 ADDRESSING PROGRAM SPACE Since the address ranges for the data and program spaces are 16 and 24 bits, respectively, a method is needed to create a 23-bit or 24-bit program address from 16-bit data registers. The solution depends on the interface method to be used. The PIC24F architecture uses a 24-bit wide program space and 16-bit wide Data Space. The architecture is also a modified Harvard scheme, meaning that data can also be present in the program space. To use this data successfully, it must be accessed in a way that preserves the alignment of information in both spaces. For table operations, the 8-bit Table Memory Page Address register (TBLPAG) is used to define a 32K word region within the program space. This is concatenated with a 16-bit EA to arrive at a full 24-bit program space address. In this format, the MSbs of TBLPAG are used to determine if the operation occurs in the user memory (TBLPAG<7> = 0) or the configuration memory (TBLPAG<7> = 1). Aside from normal execution, the PIC24F architecture provides two methods by which program space can be accessed during operation: * Using table instructions to access individual bytes or words anywhere in the program space * Remapping a portion of the program space into the Data Space (Program Space Visibility) For remapping operations, the 10-bit Extended Data Space Read register (DSRPAG) is used to define a 16K word page in the program space. When the Most Significant bit (MSb) of the EA is `1', and the MSb (bit 9) of DSRPAG is `1', the lower 8 bits of DSRPAG are concatenated with the lower 15 bits of the EA to form a 23-bit program space address. The DSRPAG<8> bit decides whether the lower word (when the bit is `0') or the higher word (when the bit is `1') of program memory is mapped. Unlike table operations, this strictly limits remapping operations to the user memory area. Table instructions allow an application to read or write to small areas of the program memory. This makes the method ideal for accessing data tables that need to be updated from time to time. It also allows access to all bytes of the program word. The remapping method allows an application to access a large block of data on a read-only basis, which is ideal for look-ups from a large table of static data. It can only access the least significant word of the program word. Table 4-36 and Figure 4-8 show how the program EA is created for table operations and remapping accesses from the data EA. Here, P<23:0> refer to a program space word, whereas D<15:0> refer to a Data Space word. TABLE 4-36: PROGRAM SPACE ADDRESS CONSTRUCTION Access Space Access Type Instruction Access (Code Execution) User TBLRD/TBLWT (Byte/Word Read/Write) User Program Space Address <23> Note 1: 2: <15> <14:1> <0> PC<22:1> 0 0 0xx xxxx xxxx xxxx xxxx xxx0 Configuration Program Space Visibility (Block Remap/Read) <22:16> User TBLPAG<7:0> Data EA<15:0> 0xxx xxxx xxxx xxxx xxxx xxxx TBLPAG<7:0> Data EA<15:0> 1xxx xxxx xxxx xxxx xxxx xxxx 0 DSRPAG<7:0>(2) Data EA<14:0>(1) 0 xxxx xxxx xxx xxxx xxxx xxxx Data EA<15> is always `1' in this case, but is not used in calculating the program space address. Bit 15 of the address is DSRPAG<0>. DSRPAG<9> is always `1' in this case. DSRPAG<8> decides whether the lower word or higher word of program memory is read. When DSRPAG<8> is `0', the lower word is read and when it is `1', the higher word is read. 2013-2015 Microchip Technology Inc. DS30005009C-page 65 PIC24FJ128GB204 FAMILY FIGURE 4-8: DATA ACCESS FROM PROGRAM SPACE ADDRESS GENERATION Program Counter Program Counter 0 0 23 Bits EA Table Operations(2) 1/0 1/0 TBLPAG 8 Bits 16 Bits 24 Bits Select Program Space Visibility(1) (Remapping) 1-Bit 0 EA 1 1/0 DSRPAG<7:0> 8 Bits 15 Bits 23 Bits User/Configuration Space Select Byte Select Note 1: DSRPAG<8> acts as word select. DSRPAG<9> should always be `1' to map program memory to data memory. 2: The instructions, TBLRDH/TBLWTH/TBLRDL/TBLWTL, decide if the higher or lower word of program memory is accessed. TBLRDH/TBLWTH instructions access the higher word and TBLRDL/TBLWTL instructions access the lower word. Table read operations are permitted in the configuration memory space. DS30005009C-page 66 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 4.3.2 DATA ACCESS FROM PROGRAM MEMORY USING TABLE INSTRUCTIONS The TBLRDL and TBLWTL instructions offer a direct method of reading or writing the lower word of any address within the program space without going through Data Space. The TBLRDH and TBLWTH instructions are the only method to read or write the upper 8 bits of a program space word as data. The PC is incremented by two for each successive 24-bit program word. This allows program memory addresses to directly map to Data Space addresses. Program memory can thus be regarded as two, 16-bit word-wide address spaces, residing side by side, each with the same address range. TBLRDL and TBLWTL access the space which contains the least significant data word, and TBLRDH and TBLWTH access the space which contains the upper data byte. Two table instructions are provided to move byte or word-sized (16-bit) data to and from program space. Both function as either byte or word operations. 1. TBLRDL (Table Read Low): In Word mode, it maps the lower word of the program space location (P<15:0>) to a data address (D<15:0>). In Byte mode, either the upper or lower byte of the lower program word is mapped to the lower byte of a data address. The upper byte is selected when byte select is `1'; the lower byte is selected when it is `0'. FIGURE 4-9: 2. TBLRDH (Table Read High): In Word mode, it maps the entire upper word of a program address (P<23:16>) to a data address. Note that D<15:8>, the `phantom' byte, will always be `0'. In Byte mode, it maps the upper or lower byte of the program word to D<7:0> of the data address, as above. Note that the data will always be `0' when the upper `phantom' byte is selected (Byte Select = 1). In a similar fashion, two table instructions, TBLWTH and TBLWTL, are used to write individual bytes or words to a program space address. The details of their operation are described in Section 6.0 "Flash Program Memory". For all table operations, the area of program memory space to be accessed is determined by the Table Memory Page Address register (TBLPAG). TBLPAG covers the entire program memory space of the device, including user and configuration spaces. When TBLPAG<7> = 0, the table page is located in the user memory space. When TBLPAG<7> = 1, the page is located in configuration space. Note: Only Table Read operations will execute in the configuration memory space where Device IDs are located; Table Write operations are not allowed. ACCESSING PROGRAM MEMORY WITH TABLE INSTRUCTIONS Program Space TBLPAG 02 Data EA<15:0> 23 15 0 000000h 23 16 8 0 00000000 020000h 030000h 00000000 00000000 00000000 `Phantom' Byte TBLRDH.B (Wn<0> = 0) TBLRDL.B (Wn<0> = 1) TBLRDL.B (Wn<0> = 0) TBLRDL.W 800000h 2013-2015 Microchip Technology Inc. The address for the table operation is determined by the data EA within the page defined by the TBLPAG register. Only read operations are shown; write operations are also valid in the user memory area. DS30005009C-page 67 PIC24FJ128GB204 FAMILY 4.3.3 READING DATA FROM PROGRAM MEMORY USING EDS The upper 32 Kbytes of Data Space may optionally be mapped into any 16K word page of the program space. This provides transparent access of stored constant data from the Data Space without the need to use special instructions (i.e., TBLRDL/H). Program space access through the Data Space occurs when the MSb of EA is `1' and the DSRPAG<9> bit is also `1'. The lower 8 bits of DSRPAG are concatenated to the Wn<14:0> bits to form a 23-bit EA to access program memory. The DSRPAG<8> bit decides which word should be addressed; when the bit is `0', the lower word and when `1', the upper word of the program memory is accessed. The entire program memory is divided into 512 EDS pages, from 200h to 3FFh, each consisting of 16K words of data. Pages, 200h to 2FFh, correspond to the lower words of the program memory, while 300h to 3FFh correspond to the upper words of the program memory. Using this EDS technique, the entire program memory can be accessed. Previously, the access to the upper word of the program memory was not supported. TABLE 4-37: For operations that use PSV and are executed outside a REPEAT loop, the MOV and MOV.D instructions will require one instruction cycle in addition to the specified execution time. All other instructions will require two instruction cycles in addition to the specified execution time. For operations that use PSV, which are executed inside a REPEAT loop, there will be some instances that require two instruction cycles in addition to the specified execution time of the instruction: * Execution in the first iteration * Execution in the last iteration * Execution prior to exiting the loop due to an interrupt * Execution upon re-entering the loop after an interrupt is serviced Any other iteration of the REPEAT loop will allow the instruction accessing data, using PSV, to execute in a single cycle. EDS PROGRAM ADDRESS WITH DIFFERENT PAGES AND ADDRESSES DSRPAG (Data Space Read Register) Source Address while Indirect Addressing 200h * * * 2FFh 300h * * * 3FFh 000h Note 1: Table 4-37 provides the corresponding 23-bit EDS address for program memory with EDS page and source addresses. 8000h to FFFFh 23-Bit EA Pointing to EDS Comment 000000h to 007FFEh * * * 7F8000h to 7FFFFEh Lower words of 4M program instructions (8 Mbytes); for read operations only 000001h to 007FFFh * * * 7F8001h to 7FFFFFh Upper words of 4M program instructions (4 Mbytes remaining, 4 Mbytes are phantom bytes); for read operations only Invalid Address Address error trap(1) When the source/destination address is above 8000h and DSRPAG/DSWPAG is `0', an address error trap will occur. EXAMPLE 4-3: EDS READ CODE FROM PROGRAM MEMORY IN ASSEMBLY ; Set the EDS page from where the data to be read mov #0x0202, w0 mov w0, DSRPAG ;page 0x202, consisting lower words, is selected for read mov #0x000A, w1 ;select the location (0x0A) to be read bset w1, #15 ;set the MSB of the base address, enable EDS mode ;Read a byte from the selected location mov.b [w1++], w2 ;read Low byte mov.b [w1++], w3 ;read High byte ;Read a word from the selected location mov [w1], w2 ; ;Read Double - word from the selected location mov.d [w1], w2 ;two word read, stored in w2 and w3 DS30005009C-page 68 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY FIGURE 4-10: PROGRAM SPACE VISIBILITY OPERATION TO ACCESS LOWER WORD When DSRPAG<9:8> = 10 and EA<15> = 1: Program Space DSRPAG 202h 23 15 Data Space 0 000000h 0000h Data EA<14:0> 010000h 017FFEh The data in the page designated by DSRPAG is mapped into the upper half of the data memory space.... 8000h EDS Window FFFFh 7FFFFEh FIGURE 4-11: ...while the lower 15 bits of the EA specify an exact address within the EDS area. This corresponds exactly to the same lower 15 bits of the actual program space address. PROGRAM SPACE VISIBILITY OPERATION TO ACCESS UPPER WORD When DSRPAG<9:8> = 11 and EA<15> = 1: Program Space DSRPAG 302h 23 15 Data Space 0 000000h 0000h Data EA<14:0> 010001h 017FFFh The data in the page designated by DSRPAG is mapped into the upper half of the data memory space.... 8000h EDS Window FFFFh 7FFFFEh 2013-2015 Microchip Technology Inc. ...while the lower 15 bits of the EA specify an exact address within the EDS area. This corresponds exactly to the same lower 15 bits of the actual program space address. DS30005009C-page 69 PIC24FJ128GB204 FAMILY NOTES: DS30005009C-page 70 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 5.0 DIRECT MEMORY ACCESS CONTROLLER (DMA) Note: The controller also monitors CPU instruction processing directly, allowing it to be aware of when the CPU requires access to peripherals on the DMA bus and automatically relinquishing control to the CPU as needed. This increases the effective bandwidth for handling data without DMA operations causing a processor stall. This makes the controller essentially transparent to the user. This data sheet summarizes the features of this group of PIC24F devices. It is not intended to be a comprehensive reference source. For more information, refer to the "dsPIC33/PIC24 Family Reference Manual", "Direct Memory Access Controller (DMA)" (DS39742). The information in this data sheet supersedes the information in the FRM. The DMA Controller has these features: * Six multiple independent and independently programmable channels * Concurrent operation with the CPU (no DMA caused Wait states) * DMA bus arbitration * Five Programmable Address modes * Four Programmable Transfer modes * Four Flexible Internal Data Transfer modes * Byte or word support for data transfer * 16-Bit Source and Destination Address register for each channel, dynamically updated and reloadable * 16-Bit Transaction Count register, dynamically updated and reloadable * Upper and Lower Address Limit registers * Counter half-full level interrupt * Software-triggered transfer * Null Write mode for symmetric buffer operations The Direct Memory Access Controller (DMA) is designed to service high data throughput peripherals operating on the SFR bus, allowing them to access data memory directly and alleviating the need for CPU-intensive management. By allowing these data-intensive peripherals to share their own data path, the main data bus is also deloaded, resulting in additional power savings. The DMA Controller functions both as a peripheral and a direct extension of the CPU. It is located on the microcontroller data bus between the CPU and DMA-enabled peripherals, with direct access to SRAM. This partitions the SFR bus into two buses, allowing the DMA Controller access to the DMA capable peripherals located on the new DMA SFR bus. The controller serves as a master device on the DMA SFR bus, controlling data flow from DMA capable peripherals. A simplified block diagram of the DMA Controller is shown in Figure 5-1. FIGURE 5-1: DMA FUNCTIONAL BLOCK DIAGRAM CPU Execution Monitoring To DMA-Enabled Peripherals To I/O Ports and Peripherals Control Logic DMACON DMAH DMAL DMABUF Data Bus DMACH0 DMAINT0 DMASRC0 DMADST0 DMACNT0 DMACH1 DMAINT1 DMASRC1 DMADST1 DMACNT1 DMACH4 DMAINT4 DMASRC4 DMADST4 DMACNT4 DMACH5 DMAINT5 DMASRC5 DMADST5 DMACNT5 Channel 0 Channel 1 Channel 4 Channel 5 Data RAM 2013-2015 Microchip Technology Inc. Data RAM Address Generation DS30005009C-page 71 PIC24FJ128GB204 FAMILY 5.1 Summary of DMA Operations The DMA Controller is capable of moving data between addresses according to a number of different parameters. Each of these parameters can be independently configured for any transaction. In addition, any or all of the DMA channels can independently perform a different transaction at the same time. Transactions are classified by these parameters: * * * * Source and destination (SFRs and data RAM) Data size (byte or word) Trigger source Transfer mode (One-Shot, Repeated or Continuous) * Addressing modes (Fixed Address or Address Blocks with or without Address Increment/Decrement) In addition, the DMA Controller provides channel priority arbitration for all channels. 5.1.1 SOURCE AND DESTINATION Using the DMA Controller, data may be moved between any two addresses in the Data Space. The SFR space (0000h to 07FFh), or the data RAM space (0800h to FFFFh) can serve as either the source or the destination. Data can be moved between these areas in either direction, or between addresses in either area. The four different combinations are shown in Figure 5-2. If it is necessary to protect areas of data RAM, the DMA Controller allows the user to set upper and lower address boundaries for operations in the Data Space above the SFR space. The boundaries are set by the DMAH and DMAL High/Low Address Limit registers. If a DMA channel attempts an operation outside of the address boundaries, the transaction is terminated and an interrupt is generated. 5.1.2 DATA SIZE The DMA Controller can handle both 8-bit and 16-bit transactions. Size is user-selectable using the SIZE bit (DMACHn<1>). By default, each channel is configured for word-size transactions. When byte-size transactions are chosen, the LSb of the source and/or destination address determines if the data represents the upper or lower byte of the data RAM location. 5.1.3 TRIGGER SOURCE The DMA Controller can use 63 of the device's interrupt sources to initiate a transaction. The DMA trigger sources occur in reverse order than their natural interrupt priority and are shown in Table 5-1. These sources cannot be used as DMA triggers: * Input Capture 8 and 9 * Output Compare 7, 8 and 9 * USB DS30005009C-page 72 Since the source and destination addresses for any transaction can be programmed independently of the trigger source, the DMA Controller can use any trigger to perform an operation on any peripheral. This also allows DMA channels to be cascaded to perform more complex transfer operations. 5.1.4 TRANSFER MODE The DMA Controller supports four types of data transfers, based on the volume of data to be moved for each trigger: * One-Shot: A single transaction occurs for each trigger. * Continuous: A series of back-to-back transactions occur for each trigger; the number of transactions is determined by the DMACNTn transaction counter. * Repeated One-Shot: A single transaction is performed repeatedly, once per trigger, until the DMA channel is disabled. * Repeated Continuous: A series of transactions are performed repeatedly, one cycle per trigger, until the DMA channel is disabled. All Transfer modes allow the option to have the source and destination addresses, and counter value automatically reloaded after the completion of a transaction; Repeated mode transfers do this automatically. 5.1.5 ADDRESSING MODES The DMA Controller also supports transfers between single addresses or address ranges. The four basic options are: * Fixed-to-Fixed: Between two constant addresses * Fixed-to-Block: From a constant source address to a range of destination addresses * Block-to-Fixed: From a range of source addresses to a single, constant destination address * Block-to-Block: From a range of source addresses to a range of destination addresses The option to select auto-increment or auto-decrement of source and/or destination addresses is available for Block Addressing modes. In addition to the four basic modes, the DMA Controller also supports Peripheral Indirect Addressing (PIA) mode, where the source or destination address is generated jointly by the DMA Controller and a PIA capable peripheral. When enabled, the DMA channel provides a base source and/or destination address, while the peripheral provides a fixed range offset address. For PIC24FJ128GB204 family devices, the 12-bit A/D Converter module is the only PIA capable peripheral. Details for its use in PIA mode are provided in Section 25.0 "12-Bit A/D Converter with Threshold Detect". 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY FIGURE 5-2: TYPES OF DMA DATA TRANSFERS Peripheral to Memory Memory to Peripheral SFR Area SFR Area Data RAM DMASRCn DMADSTn 07FFh 0800h 07FFh 0800h DMAL DMA RAM Area Data RAM DMA RAM Area DMAL DMADSTn DMASRCn DMAH DMAH Peripheral to Peripheral Memory to Memory SFR Area SFR Area DMASRCn DMADSTn Data RAM DMA RAM Area 07FFh 0800h DMAL Data RAM DMA RAM Area 07FFh 0800h DMAL DMASRCn DMADSTn DMAH Note: DMAH Relative sizes of memory areas are not shown to scale. 2013-2015 Microchip Technology Inc. DS30005009C-page 73 PIC24FJ128GB204 FAMILY 5.1.6 CHANNEL PRIORITY Each DMA channel functions independently of the others, but also competes with the others for access to the data and DMA buses. When access collisions occur, the DMA Controller arbitrates between the channels using a user-selectable priority scheme. Two schemes are available: * Round Robin: When two or more channels collide, the lower numbered channel receives priority on the first collision. On subsequent collisions, the higher numbered channels each receive priority based on their channel number. * Fixed Priority: When two or more channels collide, the lowest numbered channel always receives priority, regardless of past history. 5.2 Typical Setup To set up a DMA channel for a basic data transfer: 1. Enable the DMA Controller (DMAEN = 1) and select an appropriate channel priority scheme by setting or clearing PRSSEL. 2. Program DMAH and DMAL with appropriate upper and lower address boundaries for data RAM operations. 3. Select the DMA channel to be used and disable its operation (CHEN = 0). 4. Program the appropriate source and destination addresses for the transaction into the channel's DMASRCn and DMADSTn registers. For PIA Addressing mode, use the base address value. 5. Program the DMACNTn register for the number of triggers per transfer (One-Shot or Continuous modes) or the number of words (bytes) to be transferred (Repeated modes). 6. Set or clear the SIZE bit to select the data size. 7. Program the TRMODEx bits to select the Data Transfer mode. 8. Program the SAMODEx and DAMODEx bits to select the addressing mode. 9. Enable the DMA channel by setting CHEN. 10. Enable the trigger source interrupt. DS30005009C-page 74 5.3 Peripheral Module Disable Unlike other peripheral modules, the channels of the DMA Controller cannot be individually powered down using the Peripheral Module Disable x (PMDx) registers. Instead, the channels are controlled as two groups. The DMA0MD bit (PMD7<4>) selectively controls DMACH0 through DMACH3. The DMA1MD bit (PMD7<5>) controls DMACH4 and DMACH5. Setting both bits effectively disables the DMA Controller. 5.4 Registers The DMA Controller uses a number of registers to control its operation. The number of registers depends on the number of channels implemented for a particular device. There are always four module-level registers (one control and three buffer/address): * DMACON: DMA Control Register (Register 5-1) * DMAH and DMAL: DMA High and Low Address Limit Registers * DMABUF: DMA Transfer Data Buffer Each of the DMA channels implements five registers (two control and three buffer/address): * DMACHn: DMA Channel n Control Register (Register 5-2) * DMAINTn: DMA Channel n Interrupt Control Register (Register 5-3) * DMASRCn: DMA Channel Source Address Pointer for Channel n Register * DMADSTn: DMA Destination Address for Channel n Register * DMACNTn: DMA Transaction Count for Channel n Register For PIC24FJ128GB204 family devices, there are a total of 34 registers. 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 5-1: DMACON: DMA ENGINE CONTROL REGISTER R/W-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 DMAEN -- -- -- -- -- -- -- bit 15 bit 8 U-0 U-0 U-0 U-0 U-0 U-0 U-0 R/W-0 -- -- -- -- -- -- -- PRSSEL bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15 DMAEN: DMA Module Enable bit 1 = Enables module 0 = Disables module and terminates all active DMA operation(s) bit 14-1 Unimplemented: Read as `0' bit 0 PRSSEL: Channel Priority Scheme Selection bit 1 = Round robin scheme 0 = Fixed priority scheme 2013-2015 Microchip Technology Inc. x = Bit is unknown DS30005009C-page 75 PIC24FJ128GB204 FAMILY REGISTER 5-2: DMACHn: DMA CHANNEL n CONTROL REGISTER U-0 U-0 U-0 r-0 U-0 R/W-0 R/W-0 R/W-0 -- -- -- -- -- NULLW RELOAD(1) CHREQ(3) bit 15 bit 8 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 SAMODE1 SAMODE0 DAMODE1 DAMODE0 TRMODE1 TRMODE0 SIZE CHEN bit 7 bit 0 Legend: r = Reserved bit R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-13 Unimplemented: Read as `0' bit 12 Reserved: Maintain as `0' bit 11 Unimplemented: Read as `0' bit 10 NULLW: Null Write Mode bit 1 = A dummy write is initiated to DMASRCn for every write to DMADSTn 0 = No dummy write is initiated bit 9 RELOAD: Address and Count Reload bit(1) 1 = DMASRCn, DMADSTn and DMACNTn registers are reloaded to their previous values upon the start of the next operation 0 = DMASRCn, DMADSTn and DMACNTn are not reloaded on the start of the next operation(2) bit 8 CHREQ: DMA Channel Software Request bit(3) 1 = A DMA request is initiated by software; automatically cleared upon completion of a DMA transfer 0 = No DMA request is pending bit 7-6 SAMODE<1:0>: Source Address Mode Selection bits 11 = DMASRCn is used in Peripheral Indirect Addressing and remains unchanged 10 = DMASRCn is decremented based on the SIZE bit after a transfer completion 01 = DMASRCn is incremented based on the SIZE bit after a transfer completion 00 = DMASRCn remains unchanged after a transfer completion bit 5-4 DAMODE<1:0>: Destination Address Mode Selection bits 11 = DMADSTn is used in Peripheral Indirect Addressing and remains unchanged 10 = DMADSTn is decremented based on the SIZE bit after a transfer completion 01 = DMADSTn is incremented based on the SIZE bit after a transfer completion 00 = DMADSTn remains unchanged after a transfer completion bit 3-2 TRMODE<1:0>: Transfer Mode Selection bits 11 = Repeated Continuous mode 10 = Continuous mode 01 = Repeated One-Shot mode 00 = One-Shot mode bit 1 SIZE: Data Size Selection bit 1 = Byte (8-bit) 0 = Word (16-bit) bit 0 CHEN: DMA Channel Enable bit 1 = The corresponding channel is enabled 0 = The corresponding channel is disabled Note 1: 2: 3: Only the original DMACNTn is required to be stored to recover the original DMASRCn and DMADSTn values. DMACNTn will always be reloaded in Repeated mode transfers, regardless of the state of the RELOAD bit. The number of transfers executed while CHREQ is set depends on the configuration of TRMODE<1:0>. DS30005009C-page 76 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 5-3: DMAINTn: DMA CHANNEL n INTERRUPT REGISTER R-0 DBUFWF (1) U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 -- CHSEL5 CHSEL4 CHSEL3 CHSEL2 CHSEL1 CHSEL0 bit 15 bit 8 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 U-0 U-0 R/W-0 HIGHIF(1,2) LOWIF(1,2) DONEIF(1) HALFIF(1) OVRUNIF(1) -- -- HALFEN bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15 DBUFWF: DMA Buffered Data Write Flag bit(1) 1 = The content of the DMA buffer has not been written to the location specified in DMADSTn or DMASRCn in Null Write mode 0 = The content of the DMA buffer has been written to the location specified in DMADSTn or DMASRCn in Null Write mode bit 14 Unimplemented: Read as `0' bit 13-8 CHSEL<5:0>: DMA Channel Trigger Selection bits See Table 5-1 for a complete list. bit 7 HIGHIF: DMA High Address Limit Interrupt Flag bit(1,2) 1 = The DMA channel has attempted to access an address higher than DMAH or the upper limit of the data RAM space 0 = The DMA channel has not invoked the high address limit interrupt bit 6 LOWIF: DMA Low Address Limit Interrupt Flag bit(1,2) 1 = The DMA channel has attempted to access a DMA SFR address lower than DMAL, but above the SFR range (07FFh) 0 = The DMA channel has not invoked the low address limit interrupt bit 5 DONEIF: DMA Complete Operation Interrupt Flag bit(1) If CHEN = 1: 1 = The previous DMA session has ended with completion 0 = The current DMA session has not yet completed If CHEN = 0: 1 = The previous DMA session has ended with completion 0 = The previous DMA session has ended without completion bit 4 HALFIF: DMA 50% Watermark Level Interrupt Flag bit(1) 1 = DMACNTn has reached the halfway point to 0000h 0 = DMACNTn has not reached the halfway point bit 3 OVRUNIF: DMA Channel Overrun Flag bit(1) 1 = The DMA channel is triggered while it is still completing the operation based on the previous trigger 0 = The overrun condition has not occurred bit 2-1 Unimplemented: Read as `0' bit 0 HALFEN: Halfway Completion Watermark bit 1 = Interrupts are invoked when DMACNTn has reached its halfway point and at completion 0 = An interrupt is invoked only at the completion of the transfer Note 1: 2: Setting these flags in software does not generate an interrupt. Testing for address limit violations (DMASRCn or DMADSTn is either greater than DMAH or less than DMAL) is NOT done before the actual access. 2013-2015 Microchip Technology Inc. DS30005009C-page 77 PIC24FJ128GB204 FAMILY TABLE 5-1: DMA CHANNEL TRIGGER SOURCES CHSEL<5:0> Trigger (Interrupt) CHSEL<5:0> Trigger (Interrupt) 000000 (Unimplemented) 100000 UART2 Transmit 000001 SPI3 General Event 100001 UART2 Receive 000010 I2C1 Slave Event 100010 External Interrupt 2 000011 UART4 Transmit 100011 Timer5 000100 UART4 Receive 100100 Timer4 000101 UART4 Error 100101 Output Compare 4 000110 UART3 Transmit 100110 Output Compare 3 000111 UART3 Receive 100111 DMA Channel 2 001000 UART3 Error 101000 I2C2 Slave Event 001001 CTMU Event 101001 External Interrupt 1 001010 HLVD 101010 Interrupt-on-Change 001011 CRC Done 101011 Comparators Event 001100 UART2 Error 101100 SPI3 Receive Event 001101 UART1 Error 101101 I2C1 Master Event 001110 RTCC 101110 DMA Channel 1 001111 DMA Channel 5 101111 A/D Converter 010000 External Interrupt 4 110000 UART1 Transmit 010001 External Interrupt 3 110001 UART1 Receive 010010 SPI2 Receive Event 110010 SPI1 Transmit Event 010011 I2C2 Master Event 110011 SPI1 General Event 010100 DMA Channel 4 110100 Timer3 010101 EPMP 110101 Timer2 010110 SPI1 Receive Event 110110 Output Compare 2 010111 Output Compare 6 110111 Input Capture 2 011000 Output Compare 5 111000 DMA Channel 0 011001 Input Capture 6 111001 Timer1 011010 Input Capture 5 111010 Output Compare 1 011011 Input Capture 4 111011 Input Capture 1 011100 Input Capture 3 111100 External Interrupt 0 011101 DMA Channel 3 111101 USB 011110 SPI2 Transmit Event 111110 SPI3 Transmit Event 011111 SPI2 General Event 111111 Crypto Done DS30005009C-page 78 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 6.0 Note: FLASH PROGRAM MEMORY microcontroller just before shipping the product. This also allows the most recent firmware or a custom firmware to be programmed. This data sheet summarizes the features of this group of PIC24F devices. It is not intended to be a comprehensive reference source. For more information, refer to the "dsPIC33/PIC24 Family Reference Manual", "Program Memory" (DS39715). The information in this data sheet supersedes the information in the FRM. RTSP is accomplished using TBLRD (Table Read) and TBLWT (Table Write) instructions. With RTSP, the user may write program memory data in blocks of 64 instructions (192 bytes) at a time and erase program memory in blocks of 512 instructions (1536 bytes) at a time. 6.1 The PIC24FJ128GB204 family of devices contains internal Flash program memory for storing and executing application code. The program memory is readable, writable and erasable. The Flash memory can be programmed in four ways: * * * * Regardless of the method used, all programming of Flash memory is done with the Table Read and Table Write instructions. These allow direct read and write access to the program memory space from the data memory while the device is in normal operating mode. The 24-bit target address in the program memory is formed using the TBLPAG<7:0> bits and the Effective Address (EA) from a W register, specified in the table instruction, as shown in Figure 6-1. In-Circuit Serial ProgrammingTM (ICSPTM) Run-Time Self-Programming (RTSP) JTAG Enhanced In-Circuit Serial Programming (Enhanced ICSP) The TBLRDL and the TBLWTL instructions are used to read or write to bits<15:0> of program memory. TBLRDL and TBLWTL can access program memory in both Word and Byte modes. ICSP allows a PIC24FJ128GB204 family device to be serially programmed while in the end application circuit. This is simply done with two lines for the programming clock and programming data (named PGECx and PGEDx, respectively), and three other lines for power (VDD), ground (VSS) and Master Clear (MCLR). This allows customers to manufacture boards with unprogrammed devices and then program the FIGURE 6-1: Table Instructions and Flash Programming The TBLRDH and TBLWTH instructions are used to read or write to bits<23:16> of program memory. TBLRDH and TBLWTH can also access program memory in Word or Byte mode. ADDRESSING FOR TABLE REGISTERS 24 Bits Using Program Counter Program Counter 0 0 Working Reg EA Using Table Instruction User/Configuration Space Select 2013-2015 Microchip Technology Inc. 1/0 TBLPAG Reg 8 Bits 16 Bits 24-Bit EA Byte Select DS30005009C-page 79 PIC24FJ128GB204 FAMILY 6.2 RTSP Operation The PIC24F Flash program memory array is organized into rows of 64 instructions or 192 bytes. RTSP allows the user to erase blocks of eight rows (512 instructions) at a time and to program one row at a time. It is also possible to program single words. The 8-row erase blocks and single row write blocks are edge-aligned, from the beginning of program memory on boundaries of 1536 bytes and 192 bytes, respectively. When data is written to program memory using TBLWT instructions, the data is not written directly to memory. Instead, data written using Table Writes is stored in holding latches until the programming sequence is executed. Any number of TBLWT instructions can be executed and a write will be successfully performed. However, 64 TBLWT instructions are required to write the full row of memory. To ensure that no data is corrupted during a write, any unused address should be programmed with FFFFFFh. This is because the holding latches reset to an unknown state, so if the addresses are left in the Reset state, they may overwrite the locations on rows which were not rewritten. The basic sequence for RTSP programming is to set up a Table Pointer, then do a series of TBLWT instructions to load the buffers. Programming is performed by setting the control bits in the NVMCON register. Data can be loaded in any order and the holding registers can be written to, multiple times, before performing a write operation. Subsequent writes, however, will wipe out any previous writes. Note: Writing to a location multiple times, without erasing, is not recommended. All of the Table Write operations are single-word writes (2 instruction cycles), because only the buffers are written. A programming cycle is required for programming each row. DS30005009C-page 80 6.3 JTAG Operation The PIC24F family supports JTAG boundary scan. Boundary scan can improve the manufacturing process by verifying pin to PCB connectivity. 6.4 Enhanced In-Circuit Serial Programming Enhanced In-Circuit Serial Programming uses an on-board bootloader, known as the Program Executive (PE), to manage the programming process. Using an SPI data frame format, the Program Executive can erase, program and verify program memory. For more information on Enhanced ICSP, see the device programming specification. 6.5 Control Registers There are two SFRs used to read and write the program Flash memory: NVMCON and NVMKEY. The NVMCON register (Register 6-1) controls which blocks are to be erased, which memory type is to be programmed and when the programming cycle starts. NVMKEY is a write-only register that is used for write protection. To start a programming or erase sequence, the user must consecutively write 55h and AAh to the NVMKEY register. For more information, refer to Section 6.6 "Programming Operations". 6.6 Programming Operations A complete programming sequence is necessary for programming or erasing the internal Flash in RTSP mode. During a programming or erase operation, the processor stalls (waits) until the operation is finished. Setting the WR bit (NVMCON<15>) starts the operation and the WR bit is automatically cleared when the operation is finished. 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 6-1: NVMCON: FLASH MEMORY CONTROL REGISTER R/S-0, HC(1) R/W-0(1) R-0, HSC(1) U-0 U-0 U-0 U-0 U-0 WR WREN WRERR -- -- -- -- -- bit 15 bit 8 R/W-0(1) U-0 -- U-0 ERASE -- U-0 -- R/W-0(1) (2) NVMOP3 R/W-0(1) (2) NVMOP2 R/W-0(1) (2) NVMOP1 R/W-0(1) NVMOP0(2) bit 7 bit 0 Legend: HC = Hardware Clearable bit HSC = Hardware Settable/Clearable bit R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared S = Settable bit bit 15 WR: Write Control bit(1) 1 = Initiates a Flash memory program or erase operation; the operation is self-timed and the bit is cleared by hardware once the operation is complete 0 = Program or erase operation is complete and inactive bit 14 WREN: Write Enable bit(1) 1 = Enables Flash program/erase operations 0 = Inhibits Flash program/erase operations bit 13 WRERR: Write Sequence Error Flag bit(1) 1 = An improper program or erase sequence attempt, or termination has occurred (bit is set automatically on any set attempt of the WR bit) 0 = The program or erase operation completed normally bit 12-7 Unimplemented: Read as `0' bit 6 ERASE: Erase/Program Enable bit(1) 1 = Performs the erase operation specified by the NVMOP<3:0> bits on the next WR command 0 = Performs the program operation specified by the NVMOP<3:0> bits on the next WR command bit 5-4 Unimplemented: Read as `0' bit 3-0 NVMOP<3:0>: NVM Operation Select bits(1,2) 1111 = Memory bulk erase operation (ERASE = 1) or no operation (ERASE = 0)(3) 0011 = Memory word program operation (ERASE = 0) or no operation (ERASE = 1) 0010 = Memory page erase operation (ERASE = 1) or no operation (ERASE = 0) 0001 = Memory row program operation (ERASE = 0) or no operation (ERASE = 1) Note 1: 2: 3: These bits can only be reset on a Power-on Reset. All other combinations of NVMOP<3:0> are unimplemented. Available in ICSPTM mode only; refer to the device programming specification. 2013-2015 Microchip Technology Inc. DS30005009C-page 81 PIC24FJ128GB204 FAMILY 6.6.1 PROGRAMMING ALGORITHM FOR FLASH PROGRAM MEMORY 4. 5. The user can program one row of Flash program memory at a time. To do this, it is necessary to erase the 8-row erase block containing the desired row. The general process is: 1. 2. 3. Read eight rows of program memory (512 instructions) and store in data RAM. Update the program data in RAM with the desired new data. Erase the block (see Example 6-1): a) Set the NVMOPx bits (NVMCON<3:0>) to `0010' to configure for block erase. Set the ERASE (NVMCON<6>) and WREN (NVMCON<14>) bits. b) Write the starting address of the block to be erased into the TBLPAG and W registers. c) Write 55h to NVMKEY. d) Write AAh to NVMKEY. e) Set the WR bit (NVMCON<15>). The erase cycle begins and the CPU stalls for the duration of the erase cycle. When the erase is done, the WR bit is cleared automatically. EXAMPLE 6-1: #0x55, W0 W0, NVMKEY #0xAA, W1 W1, NVMKEY NVMCON, #WR DS30005009C-page 82 For protection against accidental operations, the write initiate sequence for NVMKEY must be used to allow any erase or program operation to proceed. After the programming command has been executed, the user must wait for the programming time until programming is complete. The two instructions following the start of the programming sequence should be NOPs, as shown in Example 6-4. ERASING A PROGRAM MEMORY BLOCK (ASSEMBLY LANGUAGE CODE) ; Set up NVMCON for block erase operation MOV #0x4042, W0 MOV W0, NVMCON ; Init pointer to row to be ERASED MOV #tblpage(PROG_ADDR), W0 MOV W0, TBLPAG MOV #tbloffset(PROG_ADDR), W0 TBLWTL W0, [W0] DISI #5 MOV.B MOV MOV.B MOV BSET NOP NOP 6. Write the first 64 instructions from data RAM into the program memory buffers (see Example 6-3). Write the program block to Flash memory: a) Set the NVMOPx bits to `0001' to configure for row programming. Clear the ERASE bit and set the WREN bit. b) Write 55h to NVMKEY. c) Write AAh to NVMKEY. d) Set the WR bit. The programming cycle begins and the CPU stalls for the duration of the write cycle. When the write to Flash memory is done, the WR bit is cleared automatically. Repeat Steps 4 and 5, using the next available 64 instructions from the block in data RAM by incrementing the value in TBLPAG, until all 512 instructions are written back to Flash memory. ; ; Initialize NVMCON ; ; ; ; ; ; ; ; ; ; ; ; Initialize Program Memory (PM) Page Boundary SFR Initialize in-page EA<15:0> pointer Set base address of erase block Block all interrupts with priority <7 for next 5 instructions Write the 0x55 key Write the 0xAA key Start the erase sequence Insert two NOPs after the erase command is asserted 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY EXAMPLE 6-2: ERASING A PROGRAM MEMORY BLOCK (`C' LANGUAGE CODE) // C example using MPLAB C30 unsigned long progAddr = 0xXXXXXX; // Address of row to write unsigned int offset; //Set up pointer to the first memory location to be written TBLPAG = progAddr>>16; // Initialize PM Page Boundary SFR offset = progAddr & 0xFFFF; // Initialize lower word of address __builtin_tblwtl(offset, 0x0000); // Set base address of erase block // with dummy latch write NVMCON = 0x4042; // Initialize NVMCON asm("DISI #5"); // Block all interrupts with priority <7 // for next 5 instructions __builtin_write_NVM(); // check function to perform unlock // sequence and set WR EXAMPLE 6-3: LOADING THE WRITE BUFFERS ; Set up NVMCON for row programming operations MOV #0x4001, W0 ; MOV W0, NVMCON ; Initialize NVMCON ; Set up a pointer to the first program memory location to be written ; program memory selected, and writes enabled MOV #0x0000, W0 ; MOV W0, TBLPAG ; Initialize PM Page Boundary SFR MOV #0x6000, W0 ; An example program memory address ; Perform the TBLWT instructions to write the latches ; 0th_program_word MOV #LOW_WORD_0, W2 ; MOV #HIGH_BYTE_0, W3 ; TBLWTL W2, [W0] ; Write PM low word into program latch TBLWTH W3, [W0++] ; Write PM high byte into program latch ; 1st_program_word MOV #LOW_WORD_1, W2 ; MOV #HIGH_BYTE_1, W3 ; TBLWTL W2, [W0] ; Write PM low word into program latch TBLWTH W3, [W0++] ; Write PM high byte into program latch ; 2nd_program_word MOV #LOW_WORD_2, W2 ; MOV #HIGH_BYTE_2, W3 ; ; Write PM low word into program latch TBLWTL W2, [W0] ; Write PM high byte into program latch TBLWTH W3, [W0++] * * * ; 63rd_program_word MOV #LOW_WORD_63, W2 ; MOV #HIGH_BYTE_63, W3 ; ; Write PM low word into program latch TBLWTL W2, [W0] ; Write PM high byte into program latch TBLWTH W3, [W0] EXAMPLE 6-4: INITIATING A PROGRAMMING SEQUENCE DISI #5 MOV.B MOV MOV.B MOV BSET NOP NOP BTSC BRA #0x55, W0 W0, NVMKEY #0xAA, W1 W1, NVMKEY NVMCON, #WR NVMCON, #15 $-2 2013-2015 Microchip Technology Inc. ; Block all interrupts with priority <7 ; for next 5 instructions ; ; ; ; ; Write the 0x55 key Write the 0xAA key Start the programming sequence Required delays ; and wait for it to be ; completed DS30005009C-page 83 PIC24FJ128GB204 FAMILY 6.6.2 PROGRAMMING A SINGLE WORD OF FLASH PROGRAM MEMORY If a Flash location has been erased, it can be programmed using Table Write instructions to write an instruction word (24-bit) into the write latch. The TBLPAG register is loaded with the 8 Most Significant Bytes (MSBs) of the Flash address. The TBLWTL and TBLWTH instructions write the desired data into the write latches and specify the lower 16 bits of the EXAMPLE 6-5: program memory address to write to. To configure the NVMCON register for a word write, set the NVMOPx bits (NVMCON<3:0>) to `0011'. The write is performed by executing the unlock sequence and setting the WR bit (see Example 6-5). An equivalent procedure in `C' compiler language, using the MPLAB(R) C30 compiler and built-in hardware functions, is shown in Example 6-6. PROGRAMMING A SINGLE WORD OF FLASH PROGRAM MEMORY ; Setup a pointer to data Program Memory MOV #tblpage(PROG_ADDR), W0 ; MOV W0, TBLPAG ;Initialize PM Page Boundary SFR MOV #tbloffset(PROG_ADDR), W0 ;Initialize a register with program memory address MOV MOV TBLWTL TBLWTH #LOW_WORD_N, W2 #HIGH_BYTE_N, W3 W2, [W0] W3, [W0++] ; ; ; Write PM low word into program latch ; Write PM high byte into program latch ; Setup NVMCON for programming one word to data Program Memory MOV #0x4003, W0 ; MOV W0, NVMCON ; Set NVMOP bits to 0011 DISI MOV.B MOV MOV.B MOV BSET NOP NOP #5 #0x55, W0 W0, NVMKEY #0xAA, W0 W0, NVMKEY NVMCON, #WR EXAMPLE 6-6: ; Disable interrupts while the KEY sequence is written ; Write the key sequence ; Start the write cycle ; Required delays PROGRAMMING A SINGLE WORD OF FLASH PROGRAM MEMORY (`C' LANGUAGE CODE) // C example using MPLAB C30 unsigned int offset; unsigned long progAddr = 0xXXXXXX; unsigned int progDataL = 0xXXXX; unsigned char progDataH = 0xXX; // Address of word to program // Data to program lower word // Data to program upper byte //Set up NVMCON for word programming NVMCON = 0x4003; // Initialize NVMCON //Set up pointer to the first memory location to be written TBLPAG = progAddr>>16; // Initialize PM Page Boundary SFR offset = progAddr & 0xFFFF; // Initialize lower word of address //Perform TBLWT instructions to write latches __builtin_tblwtl(offset, progDataL); // Write to address low word __builtin_tblwth(offset, progDataH); // Write to upper byte asm("DISI #5"); // Block interrupts with priority <7 // for next 5 instructions __builtin_write_NVM(); // C30 function to perform unlock // sequence and set WR DS30005009C-page 84 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 7.0 Note: RESETS This data sheet summarizes the features of this group of PIC24F devices. It is not intended to be a comprehensive reference source. For more information, refer to the "dsPIC33/PIC24 Family Reference Manual", "Reset" (DS39712). The information in this data sheet supersedes the information in the FRM. The Reset module combines all Reset sources and controls the device Master Reset Signal, SYSRST. The following is a list of device Reset sources: * * * * * * * * * POR: Power-on Reset MCLR: Master Clear Pin Reset SWR: RESET Instruction WDT: Watchdog Timer Reset BOR: Brown-out Reset CM: Configuration Mismatch Reset TRAPR: Trap Conflict Reset IOPUWR: Illegal Opcode Reset UWR: Uninitialized W Register Reset Any active source of Reset will make the SYSRST signal active. Many registers associated with the CPU and peripherals are forced to a known Reset state. Most registers are unaffected by a Reset; their status is unknown on POR and unchanged by all other Resets. Note: All types of device Reset will set a corresponding status bit in the RCON register to indicate the type of Reset (see Register 7-1). In addition, Reset events occurring while an extreme power-saving feature is in use (such as VBAT) will set one or more status bits in the RCON2 register (Register 7-2). A POR will clear all bits, except for the BOR and POR (RCON<1:0>) bits, which are set. The user may set or clear any bit at any time during code execution. The RCON bits only serve as status bits. Setting a particular Reset status bit in software will not cause a device Reset to occur. The RCON register also has other bits associated with the Watchdog Timer and device power-saving states. The function of these bits is discussed in other sections of this data sheet. A simplified block diagram of the Reset module is shown in Figure 7-1. FIGURE 7-1: Refer to the specific peripheral or CPU section of this manual for register Reset states. Note: The status bits in the RCON registers should be cleared after they are read so that the next RCON register values after a device Reset will be meaningful. RESET SYSTEM BLOCK DIAGRAM RESET Instruction Glitch Filter MCLR WDT Module Sleep or Idle VDD Rise Detect POR Brown-out Reset BOR SYSRST VDD Enable Voltage Regulator Trap Conflict Illegal Opcode Configuration Mismatch Uninitialized W Register 2013-2015 Microchip Technology Inc. DS30005009C-page 85 PIC24FJ128GB204 FAMILY REGISTER 7-1: RCON: RESET CONTROL REGISTER R/W-0 R/W-0 TRAPR(1) IOPUWR U-0 (1) R/W-0 -- RETEN U-0 (2) R/W-0 (1) -- DPSLP R/W-0 (1) CM R/W-0 VREGS(3) bit 15 bit 8 R/W-0 R/W-0 (1) (1) SWR EXTR R/W-0 R/W-0 (4) SWDTEN R/W-0 (1) WDTO SLEEP (1) R/W-0 R/W-1 R/W-1 (1) (1) POR(1) IDLE BOR bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15 TRAPR: Trap Reset Flag bit(1) 1 = A Trap Conflict Reset has occurred 0 = A Trap Conflict Reset has not occurred bit 14 IOPUWR: Illegal Opcode or Uninitialized W Access Reset Flag bit(1) 1 = An illegal opcode detection, an illegal address mode or Uninitialized W register is used as an Address Pointer and caused a Reset 0 = An illegal opcode or Uninitialized W register Reset has not occurred bit 13 Unimplemented: Read as `0' bit 12 RETEN: Retention Mode Enable bit(2) 1 = Retention mode is enabled while device is in Sleep modes (1.2V regulator supplies to the core) 0 = Retention mode is disabled; normal voltage levels are present bit 11 Unimplemented: Read as `0' bit 10 DPSLP: Deep Sleep Flag bit(1) 1 = Device has been in Deep Sleep mode 0 = Device has not been in Deep Sleep mode bit 9 CM: Configuration Word Mismatch Reset Flag bit(1) 1 = A Configuration Word Mismatch Reset has occurred 0 = A Configuration Word Mismatch Reset has not occurred bit 8 VREGS: Program Memory Power During Sleep bit(3) 1 = Program memory bias voltage remains powered during Sleep 0 = Program memory bias voltage is powered down during Sleep bit 7 EXTR: External Reset (MCLR) Pin bit(1) 1 = A Master Clear (pin) Reset has occurred 0 = A Master Clear (pin) Reset has not occurred bit 6 SWR: Software Reset (Instruction) Flag bit(1) 1 = A RESET instruction has been executed 0 = A RESET instruction has not been executed Note 1: 2: 3: 4: All of the Reset status bits may be set or cleared in software. Setting one of these bits in software does not cause a device Reset. If the LPCFG Configuration bit is `1' (unprogrammed), the retention regulator is disabled and the RETEN bit has no effect. Re-enabling the regulator after it enters Standby mode will add a delay, TVREG, when waking up from Sleep. Applications that do not use the voltage regulator should set this bit to prevent this delay from occurring. If the FWDTEN Configuration bit is `1' (unprogrammed), the WDT is always enabled, regardless of the SWDTEN bit setting. DS30005009C-page 86 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 7-1: RCON: RESET CONTROL REGISTER (CONTINUED) bit 5 SWDTEN: Software Enable/Disable of WDT bit(4) 1 = WDT is enabled 0 = WDT is disabled bit 4 WDTO: Watchdog Timer Time-out Flag bit(1) 1 = WDT time-out has occurred 0 = WDT time-out has not occurred bit 3 SLEEP: Wake from Sleep Flag bit(1) 1 = Device has been in Sleep mode 0 = Device has not been in Sleep mode bit 2 IDLE: Wake from Idle Flag bit(1) 1 = Device has been in Idle mode 0 = Device has not been in Idle mode bit 1 BOR: Brown-out Reset Flag bit(1) 1 = A Brown-out Reset has occurred (also set after a Power-on Reset) 0 = A Brown-out Reset has not occurred bit 0 POR: Power-on Reset Flag bit(1) 1 = A Power-on Reset has occurred 0 = A Power-on Reset has not occurred Note 1: 2: 3: 4: All of the Reset status bits may be set or cleared in software. Setting one of these bits in software does not cause a device Reset. If the LPCFG Configuration bit is `1' (unprogrammed), the retention regulator is disabled and the RETEN bit has no effect. Re-enabling the regulator after it enters Standby mode will add a delay, TVREG, when waking up from Sleep. Applications that do not use the voltage regulator should set this bit to prevent this delay from occurring. If the FWDTEN Configuration bit is `1' (unprogrammed), the WDT is always enabled, regardless of the SWDTEN bit setting. 2013-2015 Microchip Technology Inc. DS30005009C-page 87 PIC24FJ128GB204 FAMILY REGISTER 7-2: RCON2: RESET AND SYSTEM CONTROL REGISTER 2 U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 15 bit 8 U-0 U-0 -- U-0 -- r-0 -- -- R/CO-1 (1) VDDBOR R/CO-1 (1,2) VDDPOR R/CO-1 (1,3) VBPOR R/CO-0 VBAT(1) bit 7 bit 0 Legend: CO = Clearable Only bit r = Reserved bit R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-5 Unimplemented: Read as `0' bit 4 Reserved: Maintain as `0' bit 3 VDDBOR: VDD Brown-out Reset Flag bit(1) 1 = A VDD Brown-out Reset has occurred (set by hardware) 0 = A VDD Brown-out Reset has not occurred bit 2 VDDPOR: VDD Power-on Reset Flag bit(1,2) 1 = A VDD Power-on Reset has occurred (set by hardware) 0 = A VDD Power-on Reset has not occurred bit 1 VBPOR: VBPOR Flag bit(1,3) 1 = A VBAT POR has occurred (no battery is connected to the VBAT pin or VBAT power below the Deep Sleep Semaphore retention level is set by hardware) 0 = A VBAT POR has not occurred bit 0 VBAT: VBAT Flag bit(1) 1 = A POR exit has occurred while power was applied to the VBAT pin (set by hardware) 0 = A POR exit from VBAT has not occurred Note 1: 2: 3: This bit is set in hardware only; it can only be cleared in software. This bit indicates a VDD Power-on Reset. Setting the POR bit (RCON<0>) indicates a VCORE Power-on Reset. This bit is set when the device is originally powered up, even if power is present on VBAT. TABLE 7-1: RESET FLAG BIT OPERATION Flag Bit TRAPR (RCON<15>) Setting Event Clearing Event Trap Conflict Event POR IOPUWR (RCON<14>) Illegal Opcode or Uninitialized W Register Access POR CM (RCON<9>) Configuration Mismatch Reset POR EXTR (RCON<7>) MCLR Reset POR SWR (RCON<6>) RESET Instruction WDTO (RCON<4>) WDT Time-out SLEEP (RCON<3>) PWRSAV #0 Instruction POR DPSLP (RCON<10>) PWRSAV #0 Instruction while DSEN bit is Set POR IDLE (RCON<2>) PWRSAV #1 Instruction POR BOR (RCON<1>) POR, BOR -- POR (RCON<0>) POR -- Note: POR CLRWDT, PWRSAV Instructions, POR All Reset flag bits may be set or cleared by the user software. DS30005009C-page 88 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 7.1 Special Function Register Reset States Most of the Special Function Registers (SFRs) associated with the PIC24F CPU and peripherals are reset to a particular value at a device Reset. The SFRs are grouped by their peripheral or CPU function and their Reset values are specified in each section of this manual. The Reset value for each SFR does not depend on the type of Reset, with the exception of four registers. The Reset value for the Reset Control register, RCON, will depend on the type of device Reset. The Reset value for the Oscillator Control register, OSCCON, will depend on the type of Reset and the programmed values of the FNOSCx bits in Flash Configuration Word 2 (CW2); see Table 7-2. The RCFGCAL and NVMCON registers are only affected by a POR. 7.2 Device Reset Times The Reset times for various types of device Reset are summarized in Table 7-3. Note that the Master Reset Signal, SYSRST, is released after the POR delay time expires. The time at which the device actually begins to execute code will also depend on the system oscillator delays, which include the Oscillator Start-up Timer (OST) and the PLL lock time. The OST and PLL lock times occur in parallel with the applicable SYSRST delay times. The Fail-Safe Clock Monitor (FSCM) delay determines the time at which the FSCM begins to monitor the system clock source after the SYSRST signal is released. 2013-2015 Microchip Technology Inc. 7.3 Brown-out Reset (BOR) PIC24FJ128GB204 family devices implement a BOR circuit that provides the user with several configuration and power-saving options. The BOR is controlled by the BOREN (CW3<12>) Configuration bit. When BOR is enabled, any drop of VDD below the BOR threshold results in a device BOR. Threshold levels are described in Section 33.1 "DC Characteristics" (Parameter DC17A). 7.4 Clock Source Selection at Reset If clock switching is enabled, the system clock source at device Reset is chosen, as shown in Table 7-2. If clock switching is disabled, the system clock source is always selected according to the Oscillator Configuration bits. For more information, refer to the "dsPIC33/PIC24 Family Reference Manual", "Oscillator" (DS39700). TABLE 7-2: Reset Type POR BOR MCLR WDTO SWR OSCILLATOR SELECTION vs. TYPE OF RESET (CLOCK SWITCHING ENABLED) Clock Source Determinant FNOSC<2:0> Configuration bits (CW2<10:8>) COSC<2:0> Control bits (OSCCON<14:12>) DS30005009C-page 89 PIC24FJ128GB204 FAMILY TABLE 7-3: RESET DELAY TIMES FOR VARIOUS DEVICE RESETS SYSRST Delay System Clock Delay EC TPOR + TSTARTUP + TRST -- Reset Type POR BOR Clock Source Notes 1, 2, 3 ECPLL TPOR + TSTARTUP + TRST TLOCK 1, 2, 3, 5 XT, HS, SOSC TPOR + TSTARTUP + TRST TOST 1, 2, 3, 4 XTPLL, HSPLL TPOR + TSTARTUP + TRST TOST + TLOCK 1, 2, 3, 4, 5 FRC, FRCDIV TPOR + TSTARTUP + TRST TFRC 1, 2, 3, 6, 7 FRCPLL TPOR + TSTARTUP + TRST TFRC + TLOCK 1, 2, 3, 5, 6 LPRC TPOR + TSTARTUP + TRST TLPRC 1, 2, 3, 6 EC TSTARTUP + TRST -- ECPLL TSTARTUP + TRST TLOCK 2, 3 2, 3, 5 2, 3, 4 XT, HS, SOSC TSTARTUP + TRST TOST XTPLL, HSPLL TSTARTUP + TRST TOST + TLOCK 2, 3, 4, 5 FRC, FRCDIV TSTARTUP + TRST TFRC 2, 3, 6, 7 FRCPLL TSTARTUP + TRST TFRC + TLOCK 2, 3, 5, 6 LPRC TSTARTUP + TRST TLPRC 2, 3, 6 MCLR Any Clock TRST -- 3 WDT Any Clock TRST -- 3 Software Any clock TRST -- 3 Illegal Opcode Any Clock TRST -- 3 Uninitialized W Any Clock TRST -- 3 Trap Conflict Any Clock TRST -- 3 Note 1: 2: 3: 4: 5: 6: 7: 7.4.1 TPOR = Power-on Reset delay (10 s nominal). TSTARTUP = TVREG. TRST = Internal State Reset time (2 s nominal). TOST = Oscillator Start-up Timer (OST). A 10-bit counter counts 1024 oscillator periods before releasing the oscillator clock to the system. TLOCK = PLL lock time. TFRC and TLPRC = RC Oscillator start-up times. If Two-Speed Start-up is enabled, regardless of the Primary Oscillator selected, the device starts with FRC so the system clock delay is just TFRC, and in such cases, FRC start-up time is valid; it switches to the Primary Oscillator after its respective clock delay. POR AND LONG OSCILLATOR START-UP TIMES The oscillator start-up circuitry and its associated delay timers are not linked to the device Reset delays that occur at power-up. Some crystal circuits (especially low-frequency crystals) will have a relatively long start-up time. Therefore, one or more of the following conditions is possible after SYSRST is released: * The oscillator circuit has not begun to oscillate. * The Oscillator Start-up Timer has not expired (if a crystal oscillator is used). * The PLL has not achieved a lock (if PLL is used). DS30005009C-page 90 The device will not begin to execute code until a valid clock source has been released to the system. Therefore, the oscillator and PLL start-up delays must be considered when the Reset delay time must be known. 7.4.2 FAIL-SAFE CLOCK MONITOR (FSCM) AND DEVICE RESETS If the FSCM is enabled, it will begin to monitor the system clock source when SYSRST is released. If a valid clock source is not available at this time, the device will automatically switch to the FRC Oscillator and the user can switch to the desired crystal oscillator in the Trap Service Routine (TSR). 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 8.0 Note: INTERRUPT CONTROLLER This data sheet summarizes the features of this group of PIC24F devices. It is not intended to be a comprehensive reference source. For more information, refer to the "dsPIC33/PIC24 Family Reference Manual", "Interrupts" (DS70000600). The information in this data sheet supersedes the information in the FRM. The PIC24F interrupt controller reduces the numerous peripheral interrupt request signals to a single interrupt request signal to the PIC24F CPU. It has the following features: * * * * Up to 8 processor exceptions and software traps Seven user-selectable priority levels Interrupt Vector Table (IVT) with up to 118 vectors Unique vector for each interrupt or exception source * Fixed priority within a specified user priority level * Alternate Interrupt Vector Table (AIVT) for debug support * Fixed interrupt entry and return latencies 8.1 Interrupt Vector Table The Interrupt Vector Table (IVT) is shown in Figure 8-1. The IVT resides in program memory, starting at location, 000004h. The IVT contains 126 vectors, consisting of 8 non-maskable trap vectors, plus up to 118 sources of interrupt. In general, each interrupt source has its own vector. Each interrupt vector contains a 24-bit wide address. The value programmed into each interrupt vector location is the starting address of the associated Interrupt Service Routine (ISR). 8.1.1 ALTERNATE INTERRUPT VECTOR TABLE The Alternate Interrupt Vector Table (AIVT) is located after the IVT, as shown in Figure 8-1. The ALTIVT (INTCON2<15>) control bit provides access to the AIVT. If the ALTIVT bit is set, all interrupt and exception processes will use the alternate vectors instead of the default vectors. The alternate vectors are organized in the same manner as the default vectors. The AIVT supports emulation and debugging efforts by providing a means to switch between an application and a support environment without requiring the interrupt vectors to be reprogrammed. This feature also enables switching between applications for evaluation of different software algorithms at run time. If the AIVT is not needed, the AIVT should be programmed with the same addresses used in the IVT. 8.2 Reset Sequence A device Reset is not a true exception because the interrupt controller is not involved in the Reset process. The PIC24F devices clear their registers in response to a Reset, which forces the PC to zero. The microcontroller then begins program execution at location, 000000h. The user programs a GOTO instruction at the Reset address, which redirects program execution to the appropriate start-up routine. Note: Any unimplemented or unused vector locations in the IVT and AIVT should be programmed with the address of a default interrupt handler routine that contains a RESET instruction. Interrupt vectors are prioritized in terms of their natural priority; this is linked to their position in the vector table. All other things being equal, lower addresses have a higher natural priority. For example, the interrupt associated with Vector 0 will take priority over interrupts at any other vector address. PIC24FJ128GB204 family devices implement non-maskable traps and unique interrupts. These are summarized in Table 8-1 and Table 8-2. 2013-2015 Microchip Technology Inc. DS30005009C-page 91 PIC24FJ128GB204 FAMILY FIGURE 8-1: PIC24F INTERRUPT VECTOR TABLE Decreasing Natural Order Priority Reset - GOTO Instruction Reset - GOTO Address Reserved Oscillator Fail Trap Vector Address Error Trap Vector Stack Error Trap Vector Math Error Trap Vector Reserved Reserved Reserved Interrupt Vector 0 Interrupt Vector 1 -- -- -- Interrupt Vector 52 Interrupt Vector 53 Interrupt Vector 54 -- -- -- Interrupt Vector 116 Interrupt Vector 117 Reserved Reserved Reserved Oscillator Fail Trap Vector Address Error Trap Vector Stack Error Trap Vector Math Error Trap Vector Reserved Reserved Reserved Interrupt Vector 0 Interrupt Vector 1 -- -- -- Interrupt Vector 52 Interrupt Vector 53 Interrupt Vector 54 -- -- -- Interrupt Vector 116 Interrupt Vector 117 Start of Code Note 1: TABLE 8-1: 000000h 000002h 000004h 000014h 00007Ch 00007Eh 000080h Interrupt Vector Table (IVT)(1) 0000FCh 0000FEh 000100h 000102h 000114h 00017Ch 00017Eh 000180h Alternate Interrupt Vector Table (AIVT)(1) 0001FEh 000200h See Table 8-2 for the interrupt vector list. TRAP VECTOR DETAILS Vector Number IVT Address AIVT Address 0 1 2 3 4 5 6 7 000004h 000006h 000008h 00000Ah 00000Ch 00000Eh 000010h 000012h 000104h 000106h 000108h 00010Ah 00010Ch 00010Eh 000110h 000112h DS30005009C-page 92 Trap Source Reserved Oscillator Failure Address Error Stack Error Math Error Reserved Reserved Reserved 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY TABLE 8-2: IMPLEMENTED INTERRUPT VECTORS Interrupt Source ADC1 Interrupt Interrupt Bit Locations Vector # IRQ # IVT Address AIVT Address Flag Enable Priority 21 13 00002Eh 00012Eh IFS0<13> IEC0<13> IPC3<6:4> Comparator Event 26 18 000038h 000138h IFS1<2> IEC1<2> IPC4<10:8> CRC Generator 75 67 00009Ah 00019Ah IFS4<3> IEC4<3> IPC16<14:12> CTMU Event 85 77 0000AEh 0001AEh IFS4<13> IEC4<13> IPC19<6:4> Cryptographic Operation Done 63 55 000082h 000182h IFS3<7> IEC3<7> IPC13<14:12> Cryptographic Key Store Program Done 64 56 000084h 000184h IFS3<8> IEC3<8> IPC14<2:0> Cryptographic Buffer Ready 42 34 000058h 000158h IFS2<2> IEC2<2> IPC8<10:8> Cryptographic Rollover 43 35 00005Ah 00015Ah IFS2<3> IEC2<3> IPC8<14:12> DMA Channel 0 12 4 00001Ch 00011Ch IFS0<4> IEC0<4> IPC1<2:0> DMA Channel 1 22 14 000030h 000130h IFS0<14> IEC0<14> IPC3<10:8> DMA Channel 2 32 24 000044h 000144h IFS1<8> IEC1<8> IPC6<2:0> DMA Channel 3 44 36 00005Ch 00015Ch IFS2<4> IEC2<4> IPC9<2:0> DMA Channel 4 54 46 000070h 000170h IFS2<14> IEC2<14> IPC11<10:8> DMA Channel 5 69 61 00008Eh 00018Eh IFS3<13> IEC3<13> IPC15<6:4> External Interrupt 0 8 0 000014h 000114h IFS0<0> IEC0<0> IPC0<2:0> External Interrupt 1 28 20 00003Ch 00013Ch IFS1<4> IEC1<4> IPC5<2:0> External Interrupt 2 37 29 00004Eh 00014Eh IFS1<13> IEC1<13> IPC7<6:4> External Interrupt 3 61 53 00007Eh 00017Eh IFS3<5> IEC3<5> IPC13<6:4> External Interrupt 4 62 54 000080h 000180h IFS3<6> IEC3<6> IPC13<10:8> FRC Self-Tune 114 106 0000E8h 0001E8h IFS6<10> IEC6<10> IPC26<10:8> I2C1 Master Event 25 17 000036h 000136h IFS1<1> IEC1<1> IPC4<6:4> I2C1 Slave Event 24 16 000034h 000134h IFS1<0> IEC1<0> IPC4<2:0> I2C1 Bus Collision 92 84 0000BC 0001BC IFS5<4> IEC5<4> IPC21<2:0> I2C2 Master Event 58 50 000078h 000178h IFS3<2> IEC3<2> IPC12<10:8> I2C2 Slave Event 57 49 000076h 000176h IFS3<1> IEC3<1> IPC12<6:4> I2C2 Bus Collision. 93 85 0000BE 0001BE IFS5<5> IEC5<5> IPC21<6:4> Input Capture 1 9 1 000016h 000116h IFS0<1> IEC0<1> IPC0<6:4> Input Capture 2 13 5 00001Eh 00011Eh IFS0<5> IEC0<5> IPC1<6:4> Input Capture 3 45 37 00005Eh 00015Eh IFS2<5> IEC2<5> IPC9<6:4> Input Capture 4 46 38 000060h 000160h IFS2<6> IEC2<6> IPC9<10:8> Input Capture 5 47 39 000062h 000162h IFS2<7> IEC2<7> IPC9<14:12> Input Capture 6 48 40 000064h 000164h IFS2<8> IEC2<8> IPC10<2:0> JTAG 125 117 0000FEh 0001FEh IFS7<5> IEC7<5> IPC29<6:4> Input Change Notification (ICN) 27 19 00003Ah 00013Ah IFS1<3> IEC1<3> IPC4<14:12> High/Low-Voltage Detect (HLVD) 80 72 0000A4h 0001A4h IFS4<8> IEC4<8> IPC18<2:0> Output Compare 1 10 2 000018h 000118h IFS0<2> IEC0<2> IPC0<10:8> Output Compare 2 14 6 000020h 000120h IFS0<6> IEC0<6> IPC1<10:8> Output Compare 3 33 25 000046h 000146h IFS1<9> IEC1<9> IPC6<6:4> Output Compare 4 34 26 000048h 000148h IFS1<10> IEC1<10> IPC6<10:8> Output Compare 5 49 41 000066h 000166h IFS2<9> IEC2<9> IPC10<6:4> Output Compare 6 50 42 000068h 000168h IFS2<10> IEC2<10> IPC10<10:8> Enhanced Parallel Master Port (EPMP) 53 45 00006Eh 00016Eh IFS2<13> IEC2<13> IPC11<6:4> Real-Time Clock and Calendar (RTCC) 70 62 000090h 000190h IFS3<14> IEC3<14> IPC15<10:8> 2013-2015 Microchip Technology Inc. DS30005009C-page 93 PIC24FJ128GB204 FAMILY TABLE 8-2: IMPLEMENTED INTERRUPT VECTORS (CONTINUED) Interrupt Bit Locations Vector # IRQ # IVT Address AIVT Address Flag Enable Priority SPI1 General 17 9 000026h 000126h IFS0<9> IEC0<9> IPC2<6:4> SPI1 Transmit 18 10 000028h 000128h IFS0<10> IEC0<10> IPC2<10:8> SPI1 Receive 66 58 000088h 000188h IFS3<10> IEC3<10> IPC14<10:8> SPI2 General 40 32 000054h 000154h IFS2<0> IEC2<0> IPC8<2:0> SPI2 Transmit 41 33 000056h 000156h IFS2<1> IEC2<1> IPC8<6:4> IPC14<14:12> Interrupt Source SPI2 Receive 67 59 00008Ah 00018Ah IFS3<11> IEC3<11> SPI3 General 98 90 0000C8h 0001C8h IFS5<10> IEC5<10> IPC22<10:8> SPI3 Transmit 99 91 0000CAh 0001CAh IFS5<11> IEC5<11> IPC22<14:12> SPI3 Receive 68 60 000054h 000154h IFS3<12> IEC3<12> IPC15<2:0> Timer1 11 3 00001Ah 00011Ah IFS0<3> IEC0<3> IPC0<14:12> Timer2 15 7 000022h 000122h IFS0<7> IEC0<7> IPC1<14:12> Timer3 16 8 000024h 000124h IFS0<8> IEC0<8> IPC2<2:0> Timer4 35 27 00004Ah 00014Ah IFS1<11> IEC1<11> IPC6<14:12> Timer5 36 28 00004Ch 00014Ch IFS1<12> IEC1<12> IPC7<2:0> UART1 Error 73 65 000096h 000196h IFS4<1> IEC4<1> IPC16<6:4> UART1 Receiver 19 11 00002Ah 00012Ah IFS0<11> IEC0<11> IPC2<14:12> UART1 Transmitter 20 12 00002Ch 00012Ch IFS0<12> IEC0<12> IPC3<2:0> IPC16<10:8> UART2 Error 74 66 000098h 000198h IFS4<2> IEC4<2> UART2 Receiver 38 30 000050h 000150h IFS1<14> IEC1<14> IPC7<10:8> UART2 Transmitter 39 31 000052h 000152h IFS1<15> IEC1<15> IPC7<14:12> UART3 Error 89 81 0000B6h 0001B6h IFS5<1> IEC5<1> IPC20<6:4> UART3 Receiver 90 82 0000B8h 0001B8h IFS5<2> IEC5<2> IPC20<10:8> UART3 Transmitter 91 83 0000BAh 0001BAh IFS5<3> IEC5<3> IPC20<14:12> UART4 Error 95 87 0000C2h 0001C2h IFS5<7> IEC5<7> IPC21<14:12> UART4 Receiver 96 88 0000C4h 0001C4h IFS5<8> IEC5<8> IPC22<2:0> UART4 Transmitter 97 89 0000C6h 0001C6h IFS5<9> IEC5<9> IPC22<6:4> USB 94 86 0000C0h 0001C0h IFS5<6> IEC5<6> IPC21<10:8> DS30005009C-page 94 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 8.3 Interrupt Control and Status Registers The PIC24FJ128GB204 family of devices implements a total of 43 registers for the interrupt controller: * * * * * INTCON1 INTCON2 IFS0 through IFS7 IEC0 through IEC7 IPC0 through IPC16, IPC18 through IPC22, IPC26 and IPC29 * INTTREG Global interrupt control functions are controlled from INTCON1 and INTCON2. INTCON1 contains the Interrupt Nesting Disable (NSTDIS) bit, as well as the control and status flags for the processor trap sources. The INTCON2 register controls the external interrupt request signal behavior and the use of the Alternate Interrupt Vector Table (AIVT). The IFSx registers maintain all of the interrupt request flags. Each source of interrupt has a status bit, which is set by the respective peripherals or an external signal and is cleared via software. The IECx registers maintain all of the interrupt enable bits. These control bits are used to individually enable interrupts from the peripherals or external signals. The IPCx registers are used to set the Interrupt Priority Level (IPL) for each source of interrupt. Each user interrupt source can be assigned to one of eight priority levels. The interrupt sources are assigned to the IFSx, IECx and IPCx registers in the order of their vector numbers, as shown in Table 8-2. For example, the INT0 (External Interrupt 0) is shown as having a vector number and a natural order priority of 0. Thus, the INT0IF status bit is found in IFS0<0>, the INT0IE enable bit in IEC0<0> and the INT0IP<2:0> priority bits in the first position of IPC0 (IPC0<2:0>). Although they are not specifically part of the interrupt control hardware, two of the CPU Control registers contain bits that control interrupt functionality. The ALU STATUS Register (SR) contains the IPL<2:0> bits (SR<7:5>). These indicate the current CPU Interrupt Priority Level. The user can change the current CPU priority level by writing to the IPLx bits. The CORCON register contains the IPL3 bit, which together with the IPL<2:0> bits, indicates the current CPU priority level. IPL3 is a read-only bit so that trap events cannot be masked by the user software. The interrupt controller has the Interrupt Controller Test register, INTTREG, which displays the status of the interrupt controller. When an interrupt request occurs, its associated vector number and the new Interrupt Priority Level are latched into INTTREG. This information can be used to determine a specific interrupt source if a generic ISR is used for multiple vectors (such as when ISR remapping is used in bootloader applications) or to check if another interrupt is pending while in an ISR. All Interrupt registers are described in Register 8-1 through Register 8-45 in the succeeding pages. The INTTREG register contains the associated interrupt vector number and the new CPU Interrupt Priority Level, which are latched into the Vector Number (VECNUM<7:0>) and the Interrupt Level (ILR<3:0>) bit fields in the INTTREG register. The new Interrupt Priority Level is the priority of the pending interrupt. 2013-2015 Microchip Technology Inc. DS30005009C-page 95 PIC24FJ128GB204 FAMILY REGISTER 8-1: SR: ALU STATUS REGISTER (IN CPU) U-0 U-0 U-0 U-0 U-0 U-0 U-0 R/W-0 -- -- -- -- -- -- -- DC(1) bit 15 bit 8 R/W-0 IPL2 (2,3) R/W-0 R/W-0 R-0 R/W-0 R/W-0 R/W-0 R/W-0 IPL1(2,3) IPL0(2,3) RA(1) N(1) OV(1) Z(1) C(1) bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-9 Unimplemented: Read as `0' bit 7-5 IPL<2:0>: CPU Interrupt Priority Level Status bits(2,3) 111 = CPU Interrupt Priority Level is 7 (15); user interrupts are disabled 110 = CPU Interrupt Priority Level is 6 (14) 101 = CPU Interrupt Priority Level is 5 (13) 100 = CPU Interrupt Priority Level is 4 (12) 011 = CPU Interrupt Priority Level is 3 (11) 010 = CPU Interrupt Priority Level is 2 (10) 001 = CPU Interrupt Priority Level is 1 (9) 000 = CPU Interrupt Priority Level is 0 (8) Note 1: 2: 3: See Register 3-1 for the description of the remaining bits (bits 8, 4, 3, 2, 1 and 0) that are not dedicated to interrupt control functions. The IPLx bits are concatenated with the IPL3 (CORCON<3>) bit to form the CPU Interrupt Priority Level. The value in parentheses indicates the Interrupt Priority Level if IPL3 = 1. The IPLx bits are read-only when NSTDIS (INTCON1<15>) = 1. DS30005009C-page 96 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 8-2: CORCON: CPU CORE CONTROL REGISTER U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 15 bit 8 U-0 U-0 U-0 U-0 R/C-0 r-1 U-0 U-0 -- -- -- -- IPL3(1) -- -- -- bit 7 bit 0 Legend: r = Reserved bit C = Clearable bit R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-4 Unimplemented: Read as `0' bit 3 IPL3: CPU Interrupt Priority Level Status bit(1) 1 = CPU Interrupt Priority Level is greater than 7 0 = CPU Interrupt Priority Level is 7 or less bit 2 Reserved: Read as PSV bit bit 1-0 Unimplemented: Read as `0' Note 1: x = Bit is unknown The IPL3 bit is concatenated with the IPL<2:0> bits (SR<7:5>) to form the CPU Interrupt Priority Level; see Register 3-2 for bit description. 2013-2015 Microchip Technology Inc. DS30005009C-page 97 PIC24FJ128GB204 FAMILY REGISTER 8-3: INTCON1: INTERRUPT CONTROL REGISTER 1 R/W-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 NSTDIS -- -- -- -- -- -- -- bit 15 bit 8 U-0 U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 U-0 -- -- -- MATHERR ADDRERR STKERR OSCFAIL -- bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15 NSTDIS: Interrupt Nesting Disable bit 1 = Interrupt nesting is disabled 0 = Interrupt nesting is enabled bit 14-5 Unimplemented: Read as `0' bit 4 MATHERR: Arithmetic Error Trap Status bit 1 = Overflow trap has occurred 0 = Overflow trap has not occurred bit 3 ADDRERR: Address Error Trap Status bit 1 = Address error trap has occurred 0 = Address error trap has not occurred bit 2 STKERR: Stack Error Trap Status bit 1 = Stack error trap has occurred 0 = Stack error trap has not occurred bit 1 OSCFAIL: Oscillator Failure Trap Status bit 1 = Oscillator failure trap has occurred 0 = Oscillator failure trap has not occurred bit 0 Unimplemented: Read as `0' DS30005009C-page 98 x = Bit is unknown 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 8-4: INTCON2: INTERRUPT CONTROL REGISTER 2 R/W-0 R-0, HSC U-0 U-0 U-0 U-0 U-0 U-0 ALTIVT DISI -- -- -- -- -- -- bit 15 bit 8 U-0 U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 -- -- -- INT4EP INT3EP INT2EP INT1EP INT0EP bit 7 bit 0 Legend: HSC = Hardware Settable/Clearable bit R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15 ALTIVT: Enable Alternate Interrupt Vector Table bit 1 = Uses Alternate Interrupt Vector Table 0 = Uses standard (default) Interrupt Vector Table bit 14 DISI: DISI Instruction Status bit 1 = DISI instruction is active 0 = DISI instruction is not active bit 13-5 Unimplemented: Read as `0' bit 4 INT4EP: External Interrupt 4 Edge Detect Polarity Select bit 1 = Interrupt on negative edge 0 = Interrupt on positive edge bit 3 INT3EP: External Interrupt 3 Edge Detect Polarity Select bit 1 = Interrupt on negative edge 0 = Interrupt on positive edge bit 2 INT2EP: External Interrupt 2 Edge Detect Polarity Select bit 1 = Interrupt on negative edge 0 = Interrupt on positive edge bit 1 INT1EP: External Interrupt 1 Edge Detect Polarity Select bit 1 = Interrupt on negative edge 0 = Interrupt on positive edge bit 0 INT0EP: External Interrupt 0 Edge Detect Polarity Select bit 1 = Interrupt on negative edge 0 = Interrupt on positive edge 2013-2015 Microchip Technology Inc. x = Bit is unknown DS30005009C-page 99 PIC24FJ128GB204 FAMILY REGISTER 8-5: IFS0: INTERRUPT FLAG STATUS REGISTER 0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 -- DMA1IF AD1IF U1TXIF U1RXIF SPI1TXIF SPI1IF T3IF bit 15 bit 8 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 T2IF OC2IF IC2IF DMA0IF T1IF OC1IF IC1IF INT0IF bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15 Unimplemented: Read as `0' bit 14 DMA1IF: DMA Channel 1 Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 13 AD1IF: ADC1 Event Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 12 U1TXIF: UART1 Transmitter Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 11 U1RXIF: UART1 Receiver Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 10 SPI1TXIF: SPI1 Transmit Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 9 SPI1IF: SPI1 General Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 8 T3IF: Timer3 Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 7 T2IF: Timer2 Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 6 OC2IF: Output Compare Channel 2 Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 5 IC2IF: Input Capture Channel 2 Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 4 DMA0IF: DMA Channel 0 Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 3 T1IF: Timer1 Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred DS30005009C-page 100 x = Bit is unknown 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 8-5: IFS0: INTERRUPT FLAG STATUS REGISTER 0 (CONTINUED) bit 2 OC1IF: Output Compare Channel 1 Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 1 IC1IF: Input Capture Channel 1 Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 0 INT0IF: External Interrupt 0 Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred 2013-2015 Microchip Technology Inc. DS30005009C-page 101 PIC24FJ128GB204 FAMILY REGISTER 8-6: IFS1: INTERRUPT FLAG STATUS REGISTER 1 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 U2TXIF U2RXIF INT2IF T5IF T4IF OC4IF OC3IF DMA2IF bit 15 bit 8 U-0 U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 -- -- -- INT1IF CNIF CMIF MI2C1IF SI2C1IF bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15 U2TXIF: UART2 Transmitter Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 14 U2RXIF: UART2 Receiver Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 13 INT2IF: External Interrupt 2 Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 12 T5IF: Timer5 Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 11 T4IF: Timer4 Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 10 OC4IF: Output Compare Channel 4 Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 9 OC3IF: Output Compare Channel 3 Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 8 DMA2IF: DMA Channel 2 Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 7-5 Unimplemented: Read as `0' bit 4 INT1IF: External Interrupt 1 Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 3 CNIF: Input Change Notification Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred DS30005009C-page 102 x = Bit is unknown 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 8-6: IFS1: INTERRUPT FLAG STATUS REGISTER 1 (CONTINUED) bit 2 CMIF: Comparator Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 1 MI2C1IF: Master I2C1 Event Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 0 SI2C1IF: Slave I2C1 Event Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred 2013-2015 Microchip Technology Inc. DS30005009C-page 103 PIC24FJ128GB204 FAMILY REGISTER 8-7: IFS2: INTERRUPT FLAG STATUS REGISTER 2 U-0 R/W-0 R/W-0 U-0 U-0 R/W-0 R/W-0 R/W-0 -- DMA4IF PMPIF -- -- OC6IF OC5IF IC6IF bit 15 bit 8 R/W-0 R/W-0 R/W-0 R/W-0 IC5IF IC4IF IC3IF DMA3IF R/W-0 R/W-0 CRYROLLIF CRYFREEIF R/W-0 R/W-0 SPI2TXIF SPI2IF bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15 Unimplemented: Read as `0' bit 14 DMA4IF: DMA Channel 4 Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 13 PMPIF: Parallel Master Port Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 12-11 Unimplemented: Read as `0' bit 10 OC6IF: Output Compare Channel 6 Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 9 OC5IF: Output Compare Channel 5 Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 8 IC6IF: Input Capture Channel 6 Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 7 IC5IF: Input Capture Channel 5 Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 6 IC4IF: Input Capture Channel 4 Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 5 IC3IF: Input Capture Channel 3 Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 4 DMA3IF: DMA Channel 3 Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 3 CRYROLLIF: Cryptographic Rollover Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 2 CRYFREEIF: Cryptographic Buffer Free Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred DS30005009C-page 104 x = Bit is unknown 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 8-7: IFS2: INTERRUPT FLAG STATUS REGISTER 2 (CONTINUED) bit 1 SPI2TXIF: SPI2 Transmit Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 0 SPI2IF: SPI2 General Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred 2013-2015 Microchip Technology Inc. DS30005009C-page 105 PIC24FJ128GB204 FAMILY REGISTER 8-8: IFS3: INTERRUPT FLAG STATUS REGISTER 3 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 U-0 R/W-0 -- RTCIF DMA5IF SPI3RXIF SPI2RXIF SPI1RXIF -- KEYSTRIF bit 15 bit 8 R/W-0 R/W-0 CRYDNIF INT4IF R/W-0 U-0 U-0 R/W-0 R/W-0 U-0 INT3IF -- -- MI2C2IF SI2C2IF -- bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15 Unimplemented: Read as `0' bit 14 RTCIF: Real-Time Clock and Calendar Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 13 DMA5IF: DMA Channel 5 Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 12 SPI3RXIF: SPI3 Receive Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 11 SPI2RXIF: SPI2 Receive Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 10 SPI1RXIF: SPI1 Receive Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 9 Unimplemented: Read as `0' bit 8 KEYSTRIF: Cryptographic Key Store Program Done Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 7 CRYDNIF: Cryptographic Operation Done Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 6 INT4IF: External Interrupt 4 Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred DS30005009C-page 106 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 8-8: IFS3: INTERRUPT FLAG STATUS REGISTER 3 (CONTINUED) bit 5 INT3IF: External Interrupt 3 Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 4-3 Unimplemented: Read as `0' bit 2 MI2C2IF: Master I2C2 Event Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 1 SI2C2IF: Slave I2C2 Event Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 0 Unimplemented: Read as `0' 2013-2015 Microchip Technology Inc. DS30005009C-page 107 PIC24FJ128GB204 FAMILY REGISTER 8-9: IFS4: INTERRUPT FLAG STATUS REGISTER 4 U-0 U-0 R/W-0 U-0 U-0 U-0 U-0 R/W-0 -- -- CTMUIF -- -- -- -- HLVDIF bit 15 bit 8 U-0 U-0 U-0 U-0 R/W-0 R/W-0 R/W-0 U-0 -- -- -- -- CRCIF U2ERIF U1ERIF -- bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-14 Unimplemented: Read as `0' bit 13 CTMUIF: CTMU Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 12-9 Unimplemented: Read as `0' bit 8 HLVDIF: High/Low-Voltage Detect Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 7-4 Unimplemented: Read as `0' bit 3 CRCIF: CRC Generator Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 2 U2ERIF: UART2 Error Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 1 U1ERIF: UART1 Error Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 0 Unimplemented: Read as `0' DS30005009C-page 108 x = Bit is unknown 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 8-10: IFS5: INTERRUPT FLAG STATUS REGISTER 5 U-0 U-0 U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 -- -- -- -- SPI3TXIF SPI3IF U4TXIF U4RXIF bit 15 bit 8 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 U-0 U4ERIF USB1IF I2C2BCIF I2C1BCIF U3TXIF U3RXIF U3ERIF -- bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-12 Unimplemented: Read as `0' bit 11 SPI3TXIF: SPI3 Transmit Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 10 SPI3IF: SPI3 General Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 9 U4TXIF: UART4 Transmitter Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 8 U4RXIF: UART4 Receiver Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 7 U4ERIF: UART4 Error Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 6 USB1IF: USB1 (USB OTG) Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 5 I2C2BCIF: I2C2 Bus Collision Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 4 I2C1BCIF: I2C1 Bus Collision Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 3 U3TXIF: UART3 Transmitter Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 2 U3RXIF: UART3 Receiver Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 1 U3ERIF: UART3 Error Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 0 Unimplemented: Read as `0' 2013-2015 Microchip Technology Inc. x = Bit is unknown DS30005009C-page 109 PIC24FJ128GB204 FAMILY REGISTER 8-11: IFS6: INTERRUPT FLAG STATUS REGISTER 6 U-0 U-0 U-0 U-0 U-0 R/W-0 U-0 U-0 -- -- -- -- -- FSTIF -- -- bit 15 bit 8 U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-11 Unimplemented: Read as `0' bit 10 FSTIF: FRC Self-Tune Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 9-0 Unimplemented: Read as `0' REGISTER 8-12: x = Bit is unknown IFS7: INTERRUPT FLAG STATUS REGISTER 7 U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 15 bit 8 U-0 U-0 R/W-0 U-0 U-0 U-0 U-0 U-0 -- -- JTAGIF -- -- -- -- -- bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-6 Unimplemented: Read as `0' bit 5 JTAGIF: JTAG Controller Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred bit 4-0 Unimplemented: Read as `0' DS30005009C-page 110 x = Bit is unknown 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 8-13: IEC0: INTERRUPT ENABLE CONTROL REGISTER 0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 -- DMA1IE AD1IE U1TXIE U1RXIE SPI1TXIE SPI1IE T3IE bit 15 bit 8 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 T2IE OC2IE IC2IE DMA0IE T1IE OC1IE IC1IE INT0IE bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15 Unimplemented: Read as `0' bit 14 DMA1IE: DMA Channel 1 Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 13 AD1IE: ADC1 Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 12 U1TXIE: UART1 Transmitter Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 11 U1RXIE: UART1 Receiver Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 10 SPI1TXIE: SPI1 Transmit Complete Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 9 SPI1IE: SPI1 General Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 8 T3IE: Timer3 Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 7 T2IE: Timer2 Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 6 OC2IE: Output Compare Channel 2 Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 5 IC2IE: Input Capture Channel 2 Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 4 DMA0IE: DMA Channel 0 Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 3 T1IE: Timer1 Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled 2013-2015 Microchip Technology Inc. x = Bit is unknown DS30005009C-page 111 PIC24FJ128GB204 FAMILY REGISTER 8-13: IEC0: INTERRUPT ENABLE CONTROL REGISTER 0 (CONTINUED) bit 2 OC1IE: Output Compare Channel 1 Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 1 IC1IE: Input Capture Channel 1 Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 0 INT0IE: External Interrupt 0 Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled DS30005009C-page 112 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 8-14: R/W-0 IEC1: INTERRUPT ENABLE CONTROL REGISTER 1 R/W-0 U2TXIE U2RXIE R/W-0 (1) INT2IE R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 T5IE T4IE OC4IE OC3IE DMA2IE bit 15 bit 8 U-0 U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 -- -- -- INT1IE(1) CNIE CMIE MI2C1IE SI2C1IE bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15 U2TXIE: UART2 Transmitter Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 14 U2RXIE: UART2 Receiver Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 13 INT2IE: External Interrupt 2 Enable bit(1) 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 12 T5IE: Timer5 Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 11 T4IE: Timer4 Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 10 OC4IE: Output Compare Channel 4 Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 9 OC3IE: Output Compare Channel 3 Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 8 DMA2IE: DMA Channel 2 Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 7-5 Unimplemented: Read as `0' bit 4 INT1IE: External Interrupt 1 Enable bit(1) 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 3 CNIE: Input Change Notification Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 2 CMIE: Comparator Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled Note 1: x = Bit is unknown If an external interrupt is enabled, the interrupt input must also be configured to an available RPn or RPIn pin. For more information, see Section 11.4 "Peripheral Pin Select (PPS)". 2013-2015 Microchip Technology Inc. DS30005009C-page 113 PIC24FJ128GB204 FAMILY REGISTER 8-14: IEC1: INTERRUPT ENABLE CONTROL REGISTER 1 (CONTINUED) bit 1 MI2C1IE: Master I2C1 Event Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 0 SI2C1IE: Slave I2C1 Event Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled Note 1: If an external interrupt is enabled, the interrupt input must also be configured to an available RPn or RPIn pin. For more information, see Section 11.4 "Peripheral Pin Select (PPS)". DS30005009C-page 114 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 8-15: IEC2: INTERRUPT ENABLE CONTROL REGISTER 2 U-0 R/W-0 R/W-0 U-0 U-0 R/W-0 R/W-0 R/W-0 -- DMA4IE PMPIE -- -- OC6IE OC5IE IC6IE bit 15 bit 8 R/W-0 R/W-0 R/W-0 R/W-0 IC5IE IC4IE IC3IE DMA3IE R/W-0 R/W-0 CRYROLLIE CRYFREEIE R/W-0 R/W-0 SPI2TXIE SPI2IE bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15 Unimplemented: Read as `0' bit 14 DMA4IE: DMA Channel 4 Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 13 PMPIE: Parallel Master Port Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 12-11 Unimplemented: Read as `0' bit 10 OC6IE: Output Compare Channel 6 Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 9 OC5IE: Output Compare Channel 5 Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 8 IC6IE: Input Capture Channel 6 Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 7 IC5IE: Input Capture Channel 5 Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 6 IC4IE: Input Capture Channel 4 Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 5 IC3IE: Input Capture Channel 3 Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 4 DMA3IE: DMA Channel 3 Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 3 CRYROLLIE: Cryptographic Rollover Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 2 CRYFREEIE: Cryptographic Buffer Free Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled 2013-2015 Microchip Technology Inc. x = Bit is unknown DS30005009C-page 115 PIC24FJ128GB204 FAMILY REGISTER 8-15: IEC2: INTERRUPT ENABLE CONTROL REGISTER 2 (CONTINUED) bit 1 SPI2TXIE: SPI2 Transmit Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 0 SPI2IE: SPI2 General Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled DS30005009C-page 116 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 8-16: IEC3: INTERRUPT ENABLE CONTROL REGISTER 3 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 U-0 R/W-0 -- RTCIE DMA5IE SPI3RXIE SPI2RXIE SPI1RXIE -- KEYSTRIE bit 15 bit 8 R/W-0 R/W-0 CRYDNIE INT4IE (1) R/W-0 U-0 U-0 R/W-0 R/W-0 U-0 INT3IE(1) -- -- MI2C2IE SI2C2IE -- bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15 Unimplemented: Read as `0' bit 14 RTCIE: Real-Time Clock and Calendar Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 13 DMA5IE: DMA Channel 5 Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 12 SPI3RXIE: SPI3 Receive Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 11 SPI2RXIE: SPI2 Receive Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 10 SPI1RXIE: SPI1 Receive Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 9 Unimplemented: Read as `0' bit 8 KEYSTRIE: Cryptographic Key Store Program Done Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 7 CRYDNIE: Cryptographic Operation Done Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 6 INT4IE: External Interrupt 4 Enable bit(1) 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 5 INT3IE: External Interrupt 3 Enable bit(1) 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 4-3 Unimplemented: Read as `0' bit 2 MI2C2IE: Master I2C2 Event Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled Note 1: x = Bit is unknown If an external interrupt is enabled, the interrupt input must also be configured to an available RPn or RPIn pin. For more information, see Section 11.4 "Peripheral Pin Select (PPS)". 2013-2015 Microchip Technology Inc. DS30005009C-page 117 PIC24FJ128GB204 FAMILY REGISTER 8-16: IEC3: INTERRUPT ENABLE CONTROL REGISTER 3 (CONTINUED) bit 1 SI2C2IE: Slave I2C2 Event Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 0 Unimplemented: Read as `0' Note 1: If an external interrupt is enabled, the interrupt input must also be configured to an available RPn or RPIn pin. For more information, see Section 11.4 "Peripheral Pin Select (PPS)". DS30005009C-page 118 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 8-17: IEC4: INTERRUPT ENABLE CONTROL REGISTER 4 U-0 U-0 R/W-0 U-0 U-0 U-0 U-0 R/W-0 -- -- CTMUIE -- -- -- -- HLVDIE bit 15 bit 8 U-0 U-0 U-0 U-0 R/W-0 R/W-0 R/W-0 U-0 -- -- -- -- CRCIE U2ERIE U1ERIE -- bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-14 Unimplemented: Read as `0' bit 13 CTMUIE: CTMU Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 12-9 Unimplemented: Read as `0' bit 8 HLVDIE: High/Low-Voltage Detect Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 7-4 Unimplemented: Read as `0' bit 3 CRCIE: CRC Generator Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 2 U2ERIE: UART2 Error Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 1 U1ERIE: UART1 Error Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 0 Unimplemented: Read as `0' 2013-2015 Microchip Technology Inc. x = Bit is unknown DS30005009C-page 119 PIC24FJ128GB204 FAMILY REGISTER 8-18: IEC5: INTERRUPT ENABLE CONTROL REGISTER 5 U-0 U-0 U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 -- -- -- -- SPI3TXIE SPI3IE U4TXIE U4RXIE bit 15 bit 8 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 U-0 U4ERIE USB1IE I2C2BCIE I2C1BCIE U3TXIE U3RXIE U3ERIE -- bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-12 Unimplemented: Read as `0' bit 11 SPI3TXIE: SPI3 Transmit Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 10 SPI3IE: SPI3 General Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 9 U4TXIE: UART4 Transmitter Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 8 U4RXIE: UART4 Receiver Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 7 U4ERIE: UART4 Error Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 6 USB1IE: USB1 (USB OTG) Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 5 I2C2BCIE: I2C2 Bus Collision Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 4 I2C1BCIE: I2C1 Bus Collision Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 3 U3TXIE: UART3 Transmitter Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 2 U3RXIE: UART3 Receiver Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 1 U3ERIE: UART3 Error Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 0 Unimplemented: Read as `0' DS30005009C-page 120 x = Bit is unknown 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 8-19: IEC6: INTERRUPT ENABLE CONTROL REGISTER 6 U-0 U-0 U-0 U-0 U-0 R/W-0 U-0 U-0 -- -- -- -- -- FSTIE -- -- bit 15 bit 8 U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-11 Unimplemented: Read as `0' bit 10 FSTIE: FRC Self-Tune Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 9-0 Unimplemented: Read as `0' REGISTER 8-20: x = Bit is unknown IEC7: INTERRUPT ENABLE CONTROL REGISTER 7 U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 15 bit 8 U-0 U-0 R/W-0 U-0 U-0 U-0 U-0 U-0 -- -- JTAGIE -- -- -- -- -- bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-6 Unimplemented: Read as `0' bit 5 JTAGIE: JTAG Interrupt Enable bit 1 = Interrupt request is enabled 0 = Interrupt request is not enabled bit 4-0 Unimplemented: Read as `0' 2013-2015 Microchip Technology Inc. x = Bit is unknown DS30005009C-page 121 PIC24FJ128GB204 FAMILY REGISTER 8-21: IPC0: INTERRUPT PRIORITY CONTROL REGISTER 0 U-0 R/W-1 R/W-0 R/W-0 U-0 R/W-1 R/W-0 R/W-0 -- T1IP2 T1IP1 T1IP0 -- OC1IP2 OC1IP1 OC1IP0 bit 15 bit 8 U-0 R/W-1 R/W-0 R/W-0 U-0 R/W-1 R/W-0 R/W-0 -- IC1IP2 IC1IP1 IC1IP0 -- INT0IP2 INT0IP1 INT0IP0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15 Unimplemented: Read as `0' bit 14-12 T1IP<2:0>: Timer1 Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 11 Unimplemented: Read as `0' bit 10-8 OC1IP<2:0>: Output Compare Channel 1 Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 7 Unimplemented: Read as `0' bit 6-4 IC1IP<2:0>: Input Capture Channel 1 Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 3 Unimplemented: Read as `0' bit 2-0 INT0IP<2:0>: External Interrupt 0 Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled DS30005009C-page 122 x = Bit is unknown 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 8-22: IPC1: INTERRUPT PRIORITY CONTROL REGISTER 1 U-0 R/W-1 R/W-0 R/W-0 U-0 R/W-1 R/W-0 R/W-0 -- T2IP2 T2IP1 T2IP0 -- OC2IP2 OC2IP1 OC2IP0 bit 15 bit 8 U-0 R/W-1 R/W-0 R/W-0 U-0 R/W-1 R/W-0 R/W-0 -- IC2IP2 IC2IP1 IC2IP0 -- DMA0IP2 DMA0IP1 DMA0IP0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15 Unimplemented: Read as `0' bit 14-12 T2IP<2:0>: Timer2 Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 11 Unimplemented: Read as `0' bit 10-8 OC2IP<2:0>: Output Compare Channel 2 Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 7 Unimplemented: Read as `0' bit 6-4 IC2IP<2:0>: Input Capture Channel 2 Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 3 Unimplemented: Read as `0' bit 2-0 DMA0IP<2:0>: DMA Channel 0 Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled 2013-2015 Microchip Technology Inc. x = Bit is unknown DS30005009C-page 123 PIC24FJ128GB204 FAMILY REGISTER 8-23: IPC2: INTERRUPT PRIORITY CONTROL REGISTER 2 U-0 R/W-1 R/W-0 R/W-0 U-0 R/W-1 R/W-0 R/W-0 -- U1RXIP2 U1RXIP1 U1RXIP0 -- SPI1TXIP2 SPI1TXIP1 SPI1TXIP0 bit 15 bit 8 U-0 R/W-1 R/W-0 R/W-0 U-0 R/W-1 R/W-0 R/W-0 -- SPI1IP2 SPI1IP1 SPI1IP0 -- T3IP2 T3IP1 T3IP0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15 Unimplemented: Read as `0' bit 14-12 U1RXIP<2:0>: UART1 Receiver Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 11 Unimplemented: Read as `0' bit 10-8 SPI1TXIP<2:0>: SPI1 Transmit Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 7 Unimplemented: Read as `0' bit 6-4 SPI1IP<2:0>: SPI1 General Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 3 Unimplemented: Read as `0' bit 2-0 T3IP<2:0>: Timer3 Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled DS30005009C-page 124 x = Bit is unknown 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 8-24: IPC3: INTERRUPT PRIORITY CONTROL REGISTER 3 U-0 U-0 U-0 U-0 U-0 R/W-1 R/W-0 R/W-0 -- -- -- -- -- DMA1IP2 DMA1IP1 DMA1IP0 bit 15 bit 8 U-0 R/W-1 R/W-0 R/W-0 U-0 R/W-1 R/W-0 R/W-0 -- AD1IP2 AD1IP1 AD1IP0 -- U1TXIP2 U1TXIP1 U1TXIP0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-11 Unimplemented: Read as `0' bit 10-8 DMA1IP<2:0>: DMA Channel 1 Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 7 Unimplemented: Read as `0' bit 6-4 AD1IP<2:0>: ADC1 Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 3 Unimplemented: Read as `0' bit 2-0 U1TXIP<2:0>: UART1 Transmitter Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled 2013-2015 Microchip Technology Inc. x = Bit is unknown DS30005009C-page 125 PIC24FJ128GB204 FAMILY REGISTER 8-25: IPC4: INTERRUPT PRIORITY CONTROL REGISTER 4 U-0 R/W-1 R/W-0 R/W-0 U-0 R/W-1 R/W-0 R/W-0 -- CNIP2 CNIP1 CNIP0 -- CMIP2 CMIP1 CMIP0 bit 15 bit 8 U-0 R/W-1 R/W-0 R/W-0 U-0 R/W-1 R/W-0 R/W-0 -- MI2C1IP2 MI2C1IP1 MI2C1IP0 -- SI2C1IP2 SI2C1IP1 SI2C1IP0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15 Unimplemented: Read as `0' bit 14-12 CNIP<2:0>: Input Change Notification Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 11 Unimplemented: Read as `0' bit 10-8 CMIP<2:0>: Comparator Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 7 Unimplemented: Read as `0' bit 6-4 MI2C1IP<2:0>: Master I2C1 Event Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 3 Unimplemented: Read as `0' bit 2-0 SI2C1IP<2:0>: Slave I2C1 Event Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled DS30005009C-page 126 x = Bit is unknown 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 8-26: IPC5: INTERRUPT PRIORITY CONTROL REGISTER 5 U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 15 bit 8 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- R/W-1 R/W-0 R/W-0 INT1IP<2:0> bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-3 Unimplemented: Read as `0' bit 2-0 INT1IP<2:0>: External Interrupt 1 Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled 2013-2015 Microchip Technology Inc. x = Bit is unknown DS30005009C-page 127 PIC24FJ128GB204 FAMILY REGISTER 8-27: IPC6: INTERRUPT PRIORITY CONTROL REGISTER 6 U-0 R/W-1 R/W-0 R/W-0 U-0 R/W-1 R/W-0 R/W-0 -- T4IP2 T4IP1 T4IP0 -- OC4IP2 OC4IP1 OC4IP0 bit 15 bit 8 U-0 R/W-1 R/W-0 R/W-0 U-0 R/W-1 R/W-0 R/W-0 -- OC3IP2 OC3IP1 OC3IP0 -- DMA2IP2 DMA2IP1 DMA2IP0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15 Unimplemented: Read as `0' bit 14-12 T4IP<2:0>: Timer4 Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 11 Unimplemented: Read as `0' bit 10-8 OC4IP<2:0>: Output Compare Channel 4 Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 7 Unimplemented: Read as `0' bit 6-4 OC3IP<2:0>: Output Compare Channel 3 Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 3 Unimplemented: Read as `0' bit 2-0 DMA2IP<2:0>: DMA Channel 2 Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled DS30005009C-page 128 x = Bit is unknown 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 8-28: IPC7: INTERRUPT PRIORITY CONTROL REGISTER 7 U-0 R/W-1 R/W-0 R/W-0 U-0 R/W-1 R/W-0 R/W-0 -- U2TXIP2 U2TXIP1 U2TXIP0 -- U2RXIP2 U2RXIP1 U2RXIP0 bit 15 bit 8 U-0 R/W-1 R/W-0 R/W-0 U-0 R/W-1 R/W-0 R/W-0 -- INT2IP2 INT2IP1 INT2IP0 -- T5IP2 T5IP1 T5IP0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15 Unimplemented: Read as `0' bit 14-12 U2TXIP<2:0>: UART2 Transmitter Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 11 Unimplemented: Read as `0' bit 10-8 U2RXIP<2:0>: UART2 Receiver Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 7 Unimplemented: Read as `0' bit 6-4 INT2IP<2:0>: External Interrupt 2 Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 3 Unimplemented: Read as `0' bit 2-0 T5IP<2:0>: Timer5 Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled 2013-2015 Microchip Technology Inc. x = Bit is unknown DS30005009C-page 129 PIC24FJ128GB204 FAMILY REGISTER 8-29: U-0 -- IPC8: INTERRUPT PRIORITY CONTROL REGISTER 8 R/W-1 R/W-0 R/W-0 CRYROLLIP2 CRYROLLIP1 CRYROLLIP0 U-0 -- R/W-1 R/W-0 R/W-0 CRYFREEIP2 CRYFREEIP1 CRYFREEIP0 bit 15 bit 8 U-0 R/W-1 R/W-0 R/W-0 U-0 R/W-1 R/W-0 R/W-0 -- SPI2TXIP2 SPI2TXIP1 SPI2TXIP0 -- SPI2IP2 SPI2IP1 SPI2IP0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15 Unimplemented: Read as `0' bit 14-12 CRYROLLIP<2:0>: Cryptographic Rollover Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 11 Unimplemented: Read as `0' bit 10-8 CRYFREEIP<2:0>: Cryptographic Buffer Free Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 7 Unimplemented: Read as `0' bit 6-4 SPI2TXIP<2:0>: SPI2 Transmit Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 3 Unimplemented: Read as `0' bit 2-0 SPI2IP<2:0>: SPI2 General Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled DS30005009C-page 130 x = Bit is unknown 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 8-30: IPC9: INTERRUPT PRIORITY CONTROL REGISTER 9 U-0 R/W-1 R/W-0 R/W-0 U-0 R/W-1 R/W-0 R/W-0 -- IC5IP2 IC5IP1 IC5IP0 -- IC4IP2 IC4IP1 IC4IP0 bit 15 bit 8 U-0 R/W-1 R/W-0 R/W-0 U-0 R/W-1 R/W-0 R/W-0 -- IC3IP2 IC3IP1 IC3IP0 -- DMA3IP2 DMA3IP1 DMA3IP0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15 Unimplemented: Read as `0' bit 14-12 IC5IP<2:0>: Input Capture Channel 5 Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 11 Unimplemented: Read as `0' bit 10-8 IC4IP<2:0>: Input Capture Channel 4 Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 7 Unimplemented: Read as `0' bit 6-4 IC3IP<2:0>: Input Capture Channel 3 Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 3 Unimplemented: Read as `0' bit 2-0 DMA3IP<2:0>: DMA Channel 3 Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled 2013-2015 Microchip Technology Inc. x = Bit is unknown DS30005009C-page 131 PIC24FJ128GB204 FAMILY REGISTER 8-31: IPC10: INTERRUPT PRIORITY CONTROL REGISTER 10 U-0 U-0 U-0 U-0 U-0 R/W-1 R/W-0 R/W-0 -- -- -- -- -- OC6IP2 OC6IP1 OC6IP0 bit 15 bit 8 U-0 R/W-1 R/W-0 R/W-0 U-0 R/W-1 R/W-0 R/W-0 -- OC5IP2 OC5IP1 OC5IP0 -- IC6IP2 IC6IP1 IC6IP0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-11 Unimplemented: Read as `0' bit 10-8 OC6IP<2:0>: Output Compare Channel 6 Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 7 Unimplemented: Read as `0' bit 6-4 OC5IP<2:0>: Output Compare Channel 5 Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 3 Unimplemented: Read as `0' bit 2-0 IC6IP<2:0>: Input Capture Channel 6 Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled DS30005009C-page 132 x = Bit is unknown 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 8-32: IPC11: INTERRUPT PRIORITY CONTROL REGISTER 11 U-0 U-0 U-0 U-0 U-0 R/W-1 R/W-0 R/W-0 -- -- -- -- -- DMA4IP2 DMA4IP1 DMA4IP0 bit 15 bit 8 U-0 R/W-1 R/W-0 R/W-0 U-0 U-0 U-0 U-0 -- PMPIP2 PMPIP1 PMPIP0 -- -- -- -- bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-11 Unimplemented: Read as `0' bit 10-8 DMA4IP<2:0>: DMA Channel 4 Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 7 Unimplemented: Read as `0' bit 6-4 PMPIP<2:0>: Parallel Master Port Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 3-0 Unimplemented: Read as `0' 2013-2015 Microchip Technology Inc. x = Bit is unknown DS30005009C-page 133 PIC24FJ128GB204 FAMILY REGISTER 8-33: IPC12: INTERRUPT PRIORITY CONTROL REGISTER 12 U-0 U-0 U-0 U-0 U-0 R/W-1 R/W-0 R/W-0 -- -- -- -- -- MI2C2IP2 MI2C2IP1 MI2C2IP0 bit 15 bit 8 U-0 R/W-1 R/W-0 R/W-0 U-0 U-0 U-0 U-0 -- SI2C2IP2 SI2C2IP1 SI2C2IP0 -- -- -- -- bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-11 Unimplemented: Read as `0' bit 10-8 MI2C2IP<2:0>: Master I2C2 Event Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 7 Unimplemented: Read as `0' bit 6-4 SI2C2IP<2:0>: Slave I2C2 Event Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 3-0 Unimplemented: Read as `0' DS30005009C-page 134 x = Bit is unknown 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 8-34: IPC13: INTERRUPT PRIORITY CONTROL REGISTER 13 U-0 R/W-1 R/W-0 R/W-0 U-0 R/W-1 R/W-0 R/W-0 -- CRYDNIP2 CRYDNIP1 CRYDNIP0 -- INT4IP2 INT4IP1 INT4IP0 bit 15 bit 8 U-0 R/W-1 R/W-0 R/W-0 U-0 U-0 U-0 U-0 -- INT3IP2 INT3IP1 INT3IP0 -- -- -- -- bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15 Unimplemented: Read as `0' bit 14-12 CRYDNIP<2:0>: Cryptographic Operation Done Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 11 Unimplemented: Read as `0' bit 10-8 INT4IP<2:0>: External Interrupt 4 Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 7 Unimplemented: Read as `0' bit 6-4 INT3IP<2:0>: External Interrupt 3 Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 3-0 Unimplemented: Read as `0' 2013-2015 Microchip Technology Inc. x = Bit is unknown DS30005009C-page 135 PIC24FJ128GB204 FAMILY REGISTER 8-35: IPC14: INTERRUPT PRIORITY CONTROL REGISTER 14 U-0 R/W-1 R/W-0 R/W-0 U-0 R/W-1 R/W-0 R/W-0 -- SPI2RXIP2 SPI2RXIP1 SPI2RXIPO -- SPI1RXIP2 SPI1RXIP1 SPI1RXIPO bit 15 bit 8 U-0 U-0 U-0 U-0 U-0 R/W-1 R/W-0 R/W-0 -- -- -- -- -- KEYSTRIP2 KEYSTRIP1 KEYSTRIP0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15 Unimplemented: Read as `0' bit 14-12 SPI2RXIP<2:0>: SPI2 Receive Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 11 Unimplemented: Read as `0' bit 10-8 SPI1RXIP<2:0>: SPI1 Receive Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 7-3 Unimplemented: Read as `0' bit 2-0 KEYSTRIP<2:0>: Cryptographic Key Store Program Done Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled DS30005009C-page 136 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 8-36: IPC15: INTERRUPT PRIORITY CONTROL REGISTER 15 U-0 U-0 U-0 U-0 U-0 R/W-1 R/W-0 R/W-0 -- -- -- -- -- RTCIP2 RTCIP1 RTCIP0 bit 15 bit 8 U-0 R/W-1 R/W-0 R/W-0 U-0 R/W-1 R/W-0 R/W-0 -- DMA5IP2 DMA5IP1 DMA5IP0 -- SPI3RXIP2 SPI3RXIP1 SPI3RXIP0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-11 Unimplemented: Read as `0' bit 10-8 RTCIP<2:0>: Real-Time Clock and Calendar Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 7 Unimplemented: Read as `0' bit 6-4 DMA5IP<2:0>: DMA Channel 5 Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 3 Unimplemented: Read as `0' bit 2-0 SPI3RXIP<2:0>: SPI3 Receive Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled 2013-2015 Microchip Technology Inc. x = Bit is unknown DS30005009C-page 137 PIC24FJ128GB204 FAMILY REGISTER 8-37: IPC16: INTERRUPT PRIORITY CONTROL REGISTER 16 U-0 R/W-1 R/W-0 R/W-0 U-0 R/W-1 R/W-0 R/W-0 -- CRCIP2 CRCIP1 CRCIP0 -- U2ERIP2 U2ERIP1 U2ERIP0 bit 15 bit 8 U-0 R/W-1 R/W-0 R/W-0 U-0 U-0 U-0 U-0 -- U1ERIP2 U1ERIP1 U1ERIP0 -- -- -- -- bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15 Unimplemented: Read as `0' bit 14-12 CRCIP<2:0>: CRC Generator Error Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 11 Unimplemented: Read as `0' bit 10-8 U2ERIP<2:0>: UART2 Error Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 7 Unimplemented: Read as `0' bit 6-4 U1ERIP<2:0>: UART1 Error Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 3-0 Unimplemented: Read as `0' DS30005009C-page 138 x = Bit is unknown 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 8-38: IPC18: INTERRUPT PRIORITY CONTROL REGISTER 18 U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 15 bit 8 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- R/W-1 R/W-0 R/W-0 HLVDIP<2:0> bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-3 Unimplemented: Read as `0' bit 2-0 HLVDIP<2:0>: High/Low-Voltage Detect Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled REGISTER 8-39: x = Bit is unknown IPC19: INTERRUPT PRIORITY CONTROL REGISTER 19 U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 15 bit 8 U-0 R/W-1 -- R/W-0 CTMUIP<2:0> R/W-0 U-0 U-0 U-0 U-0 -- -- -- -- bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-7 Unimplemented: Read as `0' bit 6-4 CTMUIP<2:0>: CTMU Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 3-0 Unimplemented: Read as `0' 2013-2015 Microchip Technology Inc. x = Bit is unknown DS30005009C-page 139 PIC24FJ128GB204 FAMILY REGISTER 8-40: IPC20: INTERRUPT PRIORITY CONTROL REGISTER 20 U-0 R/W-1 R/W-0 R/W-0 U-0 R/W-1 R/W-0 R/W-0 -- U3TXIP2 U3TXIP1 U3TXIP0 -- U3RXIP2 U3RXIP1 U3RXIP0 bit 15 bit 8 U-0 R/W-1 R/W-0 R/W-0 U-0 U-0 U-0 U-0 -- U3ERIP2 U3ERIP1 U3ERIP0 -- -- -- -- bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15 Unimplemented: Read as `0' bit 14-12 U3TXIP<2:0>: UART3 Transmitter Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 11 Unimplemented: Read as `0' bit 10-8 U3RXIP<2:0>: UART3 Receiver Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 7 Unimplemented: Read as `0' bit 6-4 U3ERIP<2:0>: UART3 Error Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 3-0 Unimplemented: Read as `0' DS30005009C-page 140 x = Bit is unknown 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 8-41: IPC21: INTERRUPT PRIORITY CONTROL REGISTER 21 U-0 R/W-1 R/W-0 R/W-0 U-0 R/W-1 R/W-0 R/W-0 -- U4ERIP2 U4ERIP1 U4ERIP0 -- USB1IP2 USB1IP1 USB1IP0 bit 15 bit 8 U-0 R/W-1 R/W-0 R/W-0 U-0 R/W-1 R/W-0 R/W-0 -- I2C2BCIP2 I2C2BCIP1 I2C2BCIP0 -- I2C1BCIP2 I2C1BCIP1 I2C1BCIP0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15 Unimplemented: Read as `0' bit 14-12 U4ERIP<2:0>: UART4 Error Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 11 Unimplemented: Read as `0' bit 10-8 USB1IP<2:0>: USB1 (USB OTG) Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 7 Unimplemented: Read as `0' bit 6-4 I2C2BCIP<2:0>: I2C2 Bus Collision Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 3 Unimplemented: Read as `0' bit 2-0 I2C1BCIP<2:0>: I2C1 Bus Collision Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled 2013-2015 Microchip Technology Inc. x = Bit is unknown DS30005009C-page 141 PIC24FJ128GB204 FAMILY REGISTER 8-42: IPC22: INTERRUPT PRIORITY CONTROL REGISTER 22 U-0 R/W-1 R/W-0 R/W-0 U-0 R/W-1 R/W-0 R/W-0 -- SPI3TXIP2 SPI3TXIP1 SPI3TXIP0 -- SPI3IP2 SPI3IP1 SPI3IP0 bit 15 bit 8 U-0 R/W-1 R/W-0 R/W-0 U-0 R/W-1 R/W-0 R/W-0 -- U4TXIP2 U4TXIP1 U4TXIP0 -- U4RXIP2 U4RXIP1 U4RXIP0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15 Unimplemented: Read as `0' bit 14-12 SPI3TXIP<2:0>: SPI3 Transmit Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 11 Unimplemented: Read as `0' bit 10-8 SPI3IP<2:0>: SPI3 General Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 7 Unimplemented: Read as `0' bit 6-4 U4TXIP<2:0>: UART4 Transmitter Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 3 Unimplemented: Read as `0' bit 2-0 U4RXIP<2:0>: UART4 Receiver Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled DS30005009C-page 142 x = Bit is unknown 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 8-43: IPC26: INTERRUPT PRIORITY CONTROL REGISTER 26 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- R/W-1 R/W-0 R/W-0 FSTIP<2:0> bit 15 bit 8 U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-11 Unimplemented: Read as `0' bit 10-8 FSTIP<2:0>: FRC Self-Tune Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 7-0 Unimplemented: Read as `0' REGISTER 8-44: x = Bit is unknown IPC29: INTERRUPT PRIORITY CONTROL REGISTER 29 U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 15 bit 8 U-0 R/W-1 -- R/W-0 JTAGIP<2:0> R/W-0 U-0 U-0 U-0 U-0 -- -- -- -- bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-7 Unimplemented: Read as `0' bit 6-4 JTAGIP<2:0>: JTAG Interrupt Priority bits 111 = Interrupt is Priority 7 (highest priority interrupt) * * * 001 = Interrupt is Priority 1 000 = Interrupt source is disabled bit 3-0 Unimplemented: Read as `0' 2013-2015 Microchip Technology Inc. x = Bit is unknown DS30005009C-page 143 PIC24FJ128GB204 FAMILY REGISTER 8-45: INTTREG: INTERRUPT CONTROLLER TEST REGISTER R-0 r-0 R/W-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 CPUIRQ -- VHOLD -- ILR3 ILR2 ILR1 ILR0 bit 15 bit 8 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 VECNUM7 VECNUM6 VECNUM5 VECNUM4 VECNUM3 VECNUM2 VECNUM1 VECNUM0 bit 7 bit 0 Legend: r = Reserved bit R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15 CPUIRQ: CPU Interrupt Request from Interrupt Controller bit 1 = An interrupt request has occurred but has not yet been Acknowledged by the CPU 0 = No interrupt request is unacknowledged bit 14 Reserved: Maintain as `0' bit 13 VHOLD: Vector Number Capture Configuration bit 1 = VECNUM<7:0> bits contain the value of the highest priority pending interrupt 0 = VECNUM<7:0> bits contain the value of the last Acknowledged interrupt (i.e., the last interrupt that has occurred with higher priority than the CPU, even if other interrupts are pending) bit 12 Unimplemented: Read as `0' bit 11-8 ILR<3:0>: New CPU Interrupt Priority Level bits 1111 = CPU Interrupt Priority Level is 15 * * * 0001 = CPU Interrupt Priority Level is 1 0000 = CPU Interrupt Priority Level is 0 bit 7-0 VECNUM<7:0>: Vector Number of Pending Interrupt or Last Acknowledged Interrupt bits When VHOLD = 1: Indicates the vector number (from 0 to 118) of the last interrupt to occur. When VHOLD = 0: Indicates the vector number (from 0 to 118) of the interrupt request currently being handled. DS30005009C-page 144 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 8.4 Interrupt Setup Procedures 8.4.1 INITIALIZATION To configure an interrupt source: 1. 2. Set the NSTDIS (INTCON1<15>) control bit if nested interrupts are not desired. Select the user-assigned priority level for the interrupt source by writing the control bits in the appropriate IPCx register. The priority level will depend on the specific application and type of interrupt source. If multiple priority levels are not desired, the IPCx register control bits for all enabled interrupt sources may be programmed to the same non-zero value. Note: 3. 4. At a device Reset, the IPCx registers are initialized, such that all user interrupt sources are assigned to Priority Level 4. Clear the interrupt flag status bit associated with the peripheral in the associated IFSx register. Enable the interrupt source by setting the interrupt enable control bit associated with the source in the appropriate IECx register. 8.4.2 8.4.3 TRAP SERVICE ROUTINE (TSR) A Trap Service Routine (TSR) is coded like an ISR, except that the appropriate trap status flag in the INTCON1 register must be cleared to avoid re-entry into the TSR. 8.4.4 INTERRUPT DISABLE All user interrupts can be disabled using the following procedure: 1. 2. Push the current SR value onto the software stack using the PUSH instruction. Force the CPU to Priority Level 7 by inclusive ORing the value, 0Eh, with SRL. To enable user interrupts, the POP instruction may be used to restore the previous SR value. Note that only user interrupts with a priority level of 7 or less can be disabled. Trap sources (Levels 8-15) cannot be disabled. The DISI instruction provides a convenient way to disable interrupts of Priority Levels 1-6 for a fixed period of time. Level 7 interrupt sources are not disabled by the DISI instruction. INTERRUPT SERVICE ROUTINE (ISR) The method that is used to declare an Interrupt Service Routine (ISR) and initialize the IVT with the correct vector address will depend on the programming language (i.e., `C' or assembler) and the language development toolsuite that is used to develop the application. In general, the user must clear the interrupt flag in the appropriate IFSx register for the source of the interrupt that the ISR handles; otherwise, the ISR will be re-entered immediately after exiting the routine. If the ISR is coded in assembly language, it must be terminated using a RETFIE instruction to unstack the saved PC value, SRL value and old CPU priority level. 2013-2015 Microchip Technology Inc. DS30005009C-page 145 PIC24FJ128GB204 FAMILY NOTES: DS30005009C-page 146 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 9.0 OSCILLATOR CONFIGURATION Note: * An on-chip PLL (x4, x6, x8) block available for the Primary Oscillator (POSC) source or FRCDIV (see Section 9.8 "On-Chip PLL") * Software-controllable switching between various clock sources * Software-controllable postscaler for selective clocking of CPU for system power savings * A Fail-Safe Clock Monitor (FSCM) that detects clock failure and permits safe application recovery or shutdown * A separate and independently configurable system clock output for synchronizing external hardware This data sheet summarizes the features of this group of PIC24F devices. It is not intended to be a comprehensive reference source. For more information, refer to the "dsPIC33/PIC24 Family Reference Manual", "Oscillator" (DS39700). The oscillator system for PIC24FJ128GB204 family devices has the following features: * A total of four external and internal oscillator options as clock sources, providing 15 different Clock modes * An on-chip, USB PLL block to provide a stable 48 MHz clock for the USB module, as well as a range of frequency options for the system clock FIGURE 9-1: A simplified diagram of the oscillator system is shown in Figure 9-1. PIC24FJ128GB204 FAMILY CLOCK DIAGRAM PIC24FJXXXGB2XXX Family 48 MHz USB Clock PLL(2) x4 x6 x8 Primary Oscillator XTxPLL, HSxPLL, ECxPLL, FRCxPLL(1) REFOCON<15:8> XT, HS, EC USB PLL OSCO PLL & DIV OSCI PLLDIV<3:0> Reference Clock Generator XTPLL, HSPLL, ECPLL, FRCPLL REFO CPDIV<1:0> Reference from USB D+/D- 8 MHz (nominal) CLKDIV<10:8> FRC Self-Tune Control LPRC Oscillator FRCDIV 31 kHz (nominal) FRC CLKO LPRC Secondary Oscillator CPU CLKDIV<14:12> SOSC SOSCO SOSCI Peripherals Postscaler FRC Oscillator Postscaler 8 MHz 4 MHz SOSCEN Enable Oscillator Clock Control Logic Fail-Safe Clock Monitor WDT, PWRT Clock Source Option for Other Modules Note 1: 2: x denotes 4, 6 or 8. On-chip PLL can be configured using the PLLDIV<3:0> Configuration bits. 2013-2015 Microchip Technology Inc. DS30005009C-page 147 PIC24FJ128GB204 FAMILY 9.1 CPU Clocking Scheme 9.2 The system clock source can be provided by one of four sources: * Primary Oscillator (POSC) on the OSCI and OSCO pins * Secondary Oscillator (SOSC) on the SOSCI and SOSCO pins * Fast Internal RC (FRC) Oscillator * Low-Power Internal RC (LPRC) Oscillator The Primary Oscillator and FRC sources have the option of using the internal USB PLL block, which generates both the USB module clock and a separate system clock from the 96 MHz PLL. Refer to Section 9.6 "Oscillator Modes and USB Operation" for additional information. The internal FRC provides an 8 MHz clock source. It can optionally be reduced by the programmable clock divider to provide a range of system clock frequencies. The selected clock source generates the processor and peripheral clock sources. The processor clock source is divided by two to produce the internal instruction cycle clock, FCY. In this document, the instruction cycle clock is also denoted by FOSC/2. The internal instruction cycle clock, FOSC/2, can be provided on the OSCO I/O pin for some operating modes of the Primary Oscillator. TABLE 9-1: Initial Configuration on POR The oscillator source (and operating mode) that is used at a device Power-on Reset event is selected using Configuration bit settings. The Oscillator Configuration bit settings are located in the Configuration registers in program memory (for more information, refer to Section 30.1 "Configuration Bits"). The Primary Oscillator Configuration bits, POSCMD<1:0> (Configuration Word 2<1:0>), and the Initial Oscillator Select Configuration bits, FNOSC<2:0> (Configuration Word 2<10:8>), select the oscillator source that is used at a Power-on Reset. The FRC Primary Oscillator with Postscaler (FRCDIV) is the default (unprogrammed) selection. The Secondary Oscillator, or one of the internal oscillators, may be chosen by programming these bit locations. The Configuration bits allow users to choose between the various clock modes, as shown in Table 9-1. 9.2.1 CLOCK SWITCHING MODE CONFIGURATION BITS The FCKSM<1:0> Configuration bits (Configuration Word 2<7:6>) are used to jointly configure device clock switching and the Fail-Safe Clock Monitor (FSCM). Clock switching is enabled only when FCKSM1 is programmed (`0'). The FSCM is enabled only when FCKSM<1:0> are both programmed (`00'). CONFIGURATION BIT VALUES FOR CLOCK SELECTION Oscillator Mode Oscillator Source POSCMD<1:0> FNOSC<2:0> Fast RC Oscillator with Postscaler (FRCDIV) Internal 11 111 1, 2 (Reserved) Internal xx 110 1 Low-Power RC Oscillator (LPRC) Notes Internal 11 101 1 Secondary 11 100 1 Primary Oscillator (XT) with PLL Module (XTPLL) Primary 01 011 Primary Oscillator (EC) with PLL Module (ECPLL) Primary 00 011 Primary Oscillator (HS) Primary 10 010 Primary Oscillator (XT) Primary 01 010 Primary Oscillator (EC) Primary 00 010 Fast RC Oscillator with PLL Module (FRCPLL) Internal 11 001 1 Fast RC Oscillator (FRC) Internal 11 000 1 Secondary (Timer1) Oscillator (SOSC) Note 1: 2: OSCO pin function is determined by the OSCIOFCN Configuration bit. This is the default oscillator mode for an unprogrammed (erased) device. DS30005009C-page 148 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 9.3 Control Registers The operation of the oscillator is controlled by three Special Function Registers: * OSCCON * CLKDIV * OSCTUN The CLKDIV register (Register 9-2) controls the features associated with Doze mode, as well as the postscaler for the FRC Oscillator. The OSCTUN register (Register 9-3) allows the user to fine-tune the FRC Oscillator over a range of approximately 1.5%. It also controls the FRC self-tuning features, described in Section 9.5 "FRC Self-Tuning". The OSCCON register (Register 9-1) is the main control register for the oscillator. It controls clock source switching and allows the monitoring of clock sources. REGISTER 9-1: OSCCON: OSCILLATOR CONTROL REGISTER U-0 R-0 R-0 R-0 U-0 R/W-x(1) R/W-x(1) R/W-x(1) -- COSC2 COSC1 COSC0 -- NOSC2 NOSC1 NOSC0 bit 15 bit 8 R/SO-0 R/W-0 R-0(3) U-0 R/CO-0 R/W-0 R/W-0 R/W-0 CLKLOCK IOLOCK(2) LOCK -- CF POSCEN SOSCEN OSWEN bit 7 bit 0 Legend: CO = Clearable Only bit SO = Settable Only bit R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15 Unimplemented: Read as `0' bit 14-12 COSC<2:0>: Current Oscillator Selection bits 111 = Fast RC Oscillator with Postscaler (FRCDIV) 110 = Reserved 101 = Low-Power RC Oscillator (LPRC) 100 = Secondary Oscillator (SOSC) 011 = Primary Oscillator with PLL module (XTPLL, HSPLL, ECPLL) 010 = Primary Oscillator (XT, HS, EC) 001 = Fast RC Oscillator with Postscaler and PLL module (FRCPLL) 000 = Fast RC Oscillator (FRC) bit 11 Unimplemented: Read as `0' bit 10-8 NOSC<2:0>: New Oscillator Selection bits(1) 111 = Fast RC Oscillator with Postscaler (FRCDIV) 110 = Reserved 101 = Low-Power RC Oscillator (LPRC) 100 = Secondary Oscillator (SOSC) 011 = Primary Oscillator with PLL module (XTPLL, HSPLL, ECPLL) 010 = Primary Oscillator (XT, HS, EC) 001 = Fast RC Oscillator with Postscaler and PLL module (FRCPLL) 000 = Fast RC Oscillator (FRC) Note 1: 2: 3: x = Bit is unknown Reset values for these bits are determined by the FNOSCx Configuration bits. The state of the IOLOCK bit can only be changed once an unlocking sequence has been executed. In addition, if the IOL1WAY Configuration bit is `1', once the IOLOCK bit is set, it cannot be cleared. This bit also resets to `0' during any valid clock switch or whenever a non-PLL Clock mode is selected. 2013-2015 Microchip Technology Inc. DS30005009C-page 149 PIC24FJ128GB204 FAMILY REGISTER 9-1: OSCCON: OSCILLATOR CONTROL REGISTER (CONTINUED) bit 7 CLKLOCK: Clock Selection Lock Enable bit If FSCM is enabled (FCKSM1 = 1): 1 = Clock and PLL selections are locked 0 = Clock and PLL selections are not locked and may be modified by setting the OSWEN bit If FSCM is disabled (FCKSM1 = 0): Clock and PLL selections are never locked and may be modified by setting the OSWEN bit. bit 6 IOLOCK: I/O Lock Enable bit(2) 1 = I/O lock is active 0 = I/O lock is not active bit 5 LOCK: PLL Lock Status bit(3) 1 = PLL module is in lock or PLL module start-up timer is satisfied 0 = PLL module is out of lock, PLL start-up timer is running or PLL is disabled bit 4 Unimplemented: Read as `0' bit 3 CF: Clock Fail Detect bit 1 = FSCM has detected a clock failure 0 = No clock failure has been detected bit 2 POSCEN: Primary Oscillator (POSC) Sleep Enable bit 1 = Primary Oscillator continues to operate during Sleep mode 0 = Primary Oscillator is disabled during Sleep mode bit 1 SOSCEN: 32 kHz Secondary Oscillator (SOSC) Enable bit 1 = Enables Secondary Oscillator 0 = Disables Secondary Oscillator bit 0 OSWEN: Oscillator Switch Enable bit 1 = Initiates an oscillator switch to a clock source specified by the NOSC<2:0> bits 0 = Oscillator switch is complete Note 1: 2: 3: Reset values for these bits are determined by the FNOSCx Configuration bits. The state of the IOLOCK bit can only be changed once an unlocking sequence has been executed. In addition, if the IOL1WAY Configuration bit is `1', once the IOLOCK bit is set, it cannot be cleared. This bit also resets to `0' during any valid clock switch or whenever a non-PLL Clock mode is selected. DS30005009C-page 150 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 9-2: CLKDIV: CLOCK DIVIDER REGISTER R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-1 ROI DOZE2 DOZE1 DOZE0 DOZEN(1) RCDIV2 RCDIV1 RCDIV0 bit 15 bit 8 R/W-0 R/W-0 R/W-0 U-0 U-0 U-0 U-0 U-0 CPDIV1 CPDIV0 PLLEN -- -- -- -- -- bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15 ROI: Recover on Interrupt bit 1 = Interrupts clear the DOZEN bit and reset the CPU peripheral clock ratio to 1:1 0 = Interrupts have no effect on the DOZEN bit bit 14-12 DOZE<2:0>: CPU Peripheral Clock Ratio Select bits 111 = 1:128 110 = 1:64 101 = 1:32 100 = 1:16 011 = 1:8 010 = 1:4 001 = 1:2 000 = 1:1 bit 11 DOZEN: Doze Enable bit(1) 1 = DOZE<2:0> bits specify the CPU peripheral clock ratio 0 = CPU peripheral clock ratio is set to 1:1 bit 10-8 RCDIV<2:0>: FRC Postscaler Select bits 111 = 31.25 kHz (divide-by-256) 110 = 125 kHz (divide-by-64) 101 = 250 kHz (divide-by-32) 100 = 500 kHz (divide-by-16) 011 = 1 MHz (divide-by-8) 010 = 2 MHz (divide-by-4) 001 = 4 MHz (divide-by-2) 000 = 8 MHz (divide-by-1) bit 7-6 CPDIV<1:0>: USB System Clock Select bits (postscaler selected from 32 MHz clock branch) 11 = 4 MHz (divide-by-8)(2) 10 = 8 MHz (divide-by-4)(2) 01 = 16 MHz (divide-by-2) 00 = 32 MHz (divide-by-1) bit 5 PLLEN: PLL Enable bit 1 = PLL is enabled 0 = PLL is disabled bit 4-0 Unimplemented: Read as `0' Note 1: 2: This bit is automatically cleared when the ROI bit is set and an interrupt occurs. This setting is not allowed while the USB module is enabled. 2013-2015 Microchip Technology Inc. DS30005009C-page 151 PIC24FJ128GB204 FAMILY REGISTER 9-3: R/W-0 STEN OSCTUN: FRC OSCILLATOR TUNE REGISTER U-0 -- R/W-0 STSIDL R/W-0 STSRC(1) R-0 STLOCK R/W-0 STLPOL R-0 STOR R/W-0 STORPOL bit 15 bit 8 U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 -- -- TUN5 TUN4 TUN3 TUN2 TUN1 TUN0 bit 0 bit 7 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15 bit 14 bit 13 bit 12 bit 11 bit 10 bit 9 bit 8 bit 7-6 bit 5-0 Note 1: x = Bit is unknown STEN: FRC Self-Tune Enable bit 1 = FRC self-tuning is enabled; TUNx bits are controlled by hardware 0 = FRC self-tuning is disabled; application may optionally control TUNx bits Unimplemented: Read as `0' STSIDL: FRC Self-Tune Stop in Idle bit 1 = Self-tuning stops during Idle mode 0 = Self-tuning continues during Idle mode STSRC: FRC Self-Tune Reference Clock Source bit(1) 1 = FRC is tuned to approximately match the USB host clock tolerance 0 = FRC is tuned to approximately match the 32.768 kHz SOSC tolerance STLOCK: FRC Self-Tune Lock Status bit 1 = FRC accuracy is currently within 0.2% of the STSRC reference accuracy 0 = FRC accuracy may not be within 0.2% of the STSRC reference accuracy STLPOL: FRC Self-Tune Lock Interrupt Polarity bit 1 = A self-tune lock interrupt is generated when STLOCK = 0 0 = A self-tune lock interrupt is generated when STLOCK = 1 STOR: FRC Self-Tune Out of Range Status bit 1 = STSRC reference clock error is beyond the range of TUN<5:0>; no tuning is performed 0 = STSRC reference clock is within the tunable range; tuning is performed STORPOL: FRC Self-Tune Out of Range Interrupt Polarity bit 1 = A self-tune out of range interrupt is generated when STOR is = 0 0 = A self-tune out of range interrupt is generated when STOR is = 1 Unimplemented: Read as `0' TUN<5:0>: FRC Oscillator Tuning bits 011111 = Maximum frequency deviation 011110 = * * * 000001 = 000000 = Center frequency, oscillator is running at factory calibrated frequency 111111 = * * * 100001 = 100000 = Minimum frequency deviation Use of either clock recovery source has specific application requirements. For more information, see Section 9.5 "FRC Self-Tuning". DS30005009C-page 152 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 9.4 Clock Switching Operation With few limitations, applications are free to switch between any of the four clock sources (POSC, SOSC, FRC and LPRC) under software control and at any time. To limit the possible side effects that could result from this flexibility, PIC24F devices have a safeguard lock built into the switching process. Note: 9.4.1 The Primary Oscillator mode has three different submodes (XT, HS and EC) which are determined by the POSCMDx Configuration bits. While an application can switch to and from Primary Oscillator mode in software, it cannot switch between the different primary submodes without reprogramming the device. ENABLING CLOCK SWITCHING To enable clock switching, the FCKSM1 Configuration bit in CW2 must be programmed to `0'. (For more information, refer to Section 30.1 "Configuration Bits".) If the FCKSM1 Configuration bit is unprogrammed (`1'), the clock switching function and Fail-Safe Clock Monitor function are disabled; this is the default setting. The NOSCx control bits (OSCCON<10:8>) do not control the clock selection when clock switching is disabled. However, the COSC<2:0> bits (OSCCON<14:12>) will reflect the clock source selected by the FNOSCx Configuration bits. The OSWEN control bit (OSCCON<0>) has no effect when clock switching is disabled; it is held at `0' at all times. 9.4.2 OSCILLATOR SWITCHING SEQUENCE At a minimum, performing a clock switch requires this basic sequence: 1. 2. 3. 4. 5. If desired, read the COSC<2:0> bits (OSCCON<14:12>) to determine the current oscillator source. Perform the unlock sequence to allow a write to the OSCCON register high byte. Write the appropriate value to the NOSCx bits (OSCCON<10:8>) for the new oscillator source. Perform the unlock sequence to allow a write to the OSCCON register low byte. Set the OSWEN bit to initiate the oscillator switch. 2013-2015 Microchip Technology Inc. Once the basic sequence is completed, the system clock hardware responds automatically as follows: 1. 2. 3. 4. 5. 6. The clock switching hardware compares the COSCx bits with the new value of the NOSCx bits. If they are the same, then the clock switch is a redundant operation. In this case, the OSWEN bit is cleared automatically and the clock switch is aborted. If a valid clock switch has been initiated, the LOCK (OSCCON<5>) and CF (OSCCON<3>) bits are cleared. The new oscillator is turned on by the hardware if it is not currently running. If a crystal oscillator must be turned on, the hardware will wait until the OST expires. If the new source is using the PLL, then the hardware waits until a PLL lock is detected (LOCK = 1). The hardware waits for 10 clock cycles from the new clock source and then performs the clock switch. The hardware clears the OSWEN bit to indicate a successful clock transition. In addition, the NOSCx bits value is transferred to the COSCx bits. The old clock source is turned off at this time, with the exception of LPRC (if WDT or FSCM is enabled) or SOSC (if SOSCEN remains set). Note 1: The processor will continue to execute code throughout the clock switching sequence. Timing-sensitive code should not be executed during this time. 2: Direct clock switches between any Primary Oscillator mode with PLL and FRCPLL mode are not permitted. This applies to clock switches in either direction. In these instances, the application must switch to FRC mode as a transitional clock source between the two PLL modes. DS30005009C-page 153 PIC24FJ128GB204 FAMILY A recommended code sequence for a clock switch includes the following: 1. 2. 3. 4. 5. 6. 7. 8. Disable interrupts during the OSCCON register unlock and write sequence. Execute the unlock sequence for the OSCCON high byte by writing 78h and 9Ah to OSCCON<15:8> in two back-to-back instructions. Write new oscillator source to the NOSCx bits in the instruction immediately following the unlock sequence. Execute the unlock sequence for the OSCCON low byte by writing 46h and 57h to OSCCON<7:0> in two back-to-back instructions. Set the OSWEN bit in the instruction immediately following the unlock sequence. Continue to execute code that is not clock- sensitive (optional). Invoke an appropriate amount of software delay (cycle counting) to allow the selected oscillator and/or PLL to start and stabilize. Check to see if OSWEN is `0'. If it is, the switch was successful. If OSWEN is still set, then check the LOCK bit to determine the cause of the failure. The core sequence for unlocking the OSCCON register and initiating a clock switch is shown in Example 9-1. EXAMPLE 9-1: BASIC CODE SEQUENCE FOR CLOCK SWITCHING ;Place the new oscillator selection in W0 ;OSCCONH (high byte) Unlock Sequence MOV #OSCCONH, w1 MOV #0x78, w2 MOV #0x9A, w3 MOV.b w2, [w1] MOV.b w3, [w1] ;Set new oscillator selection MOV.b WREG, OSCCONH ;OSCCONL (low byte) unlock sequence MOV #OSCCONL, w1 MOV #0x46, w2 MOV #0x57, w3 MOV.b w2, [w1] MOV.b w3, [w1] ;Start oscillator switch operation BSET OSCCON, #0 9.5 PIC24FJ128GB204 family devices include an automatic mechanism to calibrate the FRC during run time. This system uses clock recovery from a source of known accuracy to maintain the FRC within a very narrow margin of its nominal 8 MHz frequency. This allows for a frequency accuracy that exceeds 0.25%, which is well within the requirements of the "USB 2.0 Specification". Note: The self-tune feature maintains sufficient accuracy for operation in USB Device mode. For applications that function as a USB host, a high-accuracy clock source (0.05%) is still required. The self-tune system is controlled by the bits in the upper half of the OSCTUN register. Setting the STEN bit (OSCTUN<15>) enables the system, causing it to recover a calibration clock from a source selected by the STSRC bit (OSCTUN<12>). When STSRC = 1, the system uses the Start-of-Frame (SOF) packets from an external USB host for its source. When STSRC = 0, the system uses the crystal controlled SOSC for its calibration source. Regardless of the source, the system uses the TUN<5:0> bits (OSCTUN<5:0>) to change the FRC's frequency. Frequency monitoring and adjustment is dynamic, occurring continuously during run time. While the system is active, the TUNx bits cannot be written to by software. Note: To use the USB as a clock recovery source (STSRC = 1), the microcontroller must be configured for USB operation and connected to an external USB device. If the SOSC is to be used as the clock recovery source (STSRC = 0), the SOSC must always be enabled. The self-tune system can generate a hardware interrupt, FSTIF. The interrupt can result from a drift of the FRC from the reference, by greater than 0.2%, in either direction or whenever the frequency deviation is beyond the ability of the TUNx bits to correct (i.e., greater than 1.5%). The STLOCK and STOR status bits (OSCTUN<11,9>) are used to indicate these conditions. The STLPOL and STORPOL bits (OSCTUN<10,8>) configure the FSTIF interrupt to occur in the presence or the absence of the conditions. It is the user's responsibility to monitor both the STLOCK and STOR bits to determine the exact cause of the interrupt. Note: DS30005009C-page 154 FRC Self-Tuning The STLPOL and STORPOL bits should be ignored when the self-tune system is disabled (STEN = 0). 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 9.6 Oscillator Modes and USB Operation TABLE 9-2: Because of the timing requirements imposed by USB, an internal clock of 48 MHz is required at all times while the USB module is enabled and not in a suspended operating state. Since this is well beyond the maximum CPU clock speed, a method is provided to internally generate both the USB and system clocks from a single oscillator source. PIC24FJ128GB204 family devices use the same clock structure as most other PIC24FJ devices, but include a two-branch PLL system to generate the two clock signals. The USB PLL block is shown in Figure 9-2. In this system, the input from the Primary Oscillator is divided down by a PLL prescaler to generate a 4 MHz output. This is used to drive an on-chip, 96 MHz PLL frequency multiplier to drive the two clock branches. One branch uses a fixed, divide-by-2 frequency divider to generate the 48 MHz USB clock. The other branch uses a fixed, divide-by-3 frequency divider and configurable PLL prescaler/divider to generate a range of system clock frequencies. The CPDIVx bits select the system clock speed. Available clock options are listed in Table 9-2. The USB PLL prescaler does not automatically sense the incoming oscillator frequency. The user must manually configure the PLL divider to generate the required 4 MHz output using the PLLDIV<3:0> Configuration bits. This limits the choices for Primary Oscillator frequency to a total of 8 possibilities, as shown in Table 9-3. MCU Clock Division (CPDIV<1:0>) Microcontroller Clock Frequency None (00) 32 MHz 2 (01) 16 MHz 4 (10)(1) 8 MHz 8 (11)(1) 4 MHz Note 1: Not compatible with USB operation; the USB module must be disabled to use this system clock option. TABLE 9-3: VALID PRIMARY OSCILLATOR CONFIGURATIONS FOR USB OPERATIONS Input Oscillator Frequency Clock Mode PLL Division (PLLDIV<3:0>) 48 MHz ECPLL 12 (0111) 32 MHz ECPLL 8 (0110) 24 MHz HSPLL, ECPLL 6 (0101) 20 MHz HSPLL, ECPLL 5 (0100) 16 MHz HSPLL, ECPLL 4 (0011) 12 MHz HSPLL, ECPLL 3 (0010) 8 MHz ECPLL, XTPLL, FRCPLL(1) 2 (0001) 4 MHz ECPLL, XTPLL, FRCPLL(1) 1 (0000) Note 1: FIGURE 9-2: SYSTEM CLOCK OPTIONS DURING USB OPERATION Requires the use of the FRC self-tune feature to maintain the required clock accuracy. USB PLL BLOCK PLLDIV<3:0> Input from FRC (4 MHz or 8 MHz) 12 8 6 5 4 3 2 1 0111 0110 0101 0100 4 MHz 0011 0010 0001 0000 PLLDIS 48 MHz Clock for USB Module 2 96 MHz PLL 3 32 MHz CPU Divider Input from POSC PLL Prescaler FNOSC<2:0> 8 4 2 1 11 10 01 00 PLL Output for System Clock CPDIV<1:0> 2013-2015 Microchip Technology Inc. DS30005009C-page 155 PIC24FJ128GB204 FAMILY 9.6.1 CONSIDERATIONS FOR USB OPERATION When using the USB On-The-Go module in PIC24FJ128GB204 family devices, users must always observe these rules in configuring the system clock: * The Oscillator modes listed in Table 9-3 are the only oscillator configurations that permit USB operation. There is no provision to provide a separate external clock source to the USB module. * For USB operation, the selected clock source (EC, HS or XT) must meet the USB clock tolerance requirements. * When the FRCPLL Oscillator mode is used for USB applications, the FRC self-tune system should be used as well. While the FRC is accurate, the only two ways to ensure the level of accuracy required by the "USB 2.0 Specification", throughout the application's operating range, are either the self-tune system or manually changing the TUNx bits. * The user must always ensure that the FRC source is configured to provide a frequency of 4 MHz or 8 MHz (RCDIV<2:0> = 001 or 000) and that the USB PLL prescaler is configured appropriately. * All other Oscillator modes are available; however, USB operation is not possible when these modes are selected. They may still be useful in cases where other power levels of operation are desirable and the USB module is not needed (for example, the application is Sleeping and waiting for a bus attachment). 9.7 Reference Clock Output If the selected clock source has a global device enable (via device Configuration fuse settings), the user must enable the clock source before selecting it as a base clock source. The ROACTIVE bit (REFOCONL<8>) synchronizes the REFO module during the turn-on and turn-off of the module. Note: 9.7.2 Once the ROEN bit is set, it should not be cleared until the ROACTIVE bit is read as `1'. CLOCK SWITCHING The base clock to the module can be switched. First, turn off the module by clearing the ROEN bit (REFOCONL<15> = 0) and wait for the ROACTIVE (REFOCONL<8>) bit to be cleared by the hardware. This avoids a glitch in the REFO output. The ROTRIMx and RODIVx bits can be changed on-the-fly. Follow the below mentioned steps before changing the ROTRIMx and RODIVx bits. * REFO is not actively performing the divider switch (ROSWEN = 0). * Update the ROTRIMx and RODIVx bits with the latest values. * Set the ROSWEN bit. * Wait for the ROSWEN bit to be cleared by hardware. The ROTRIMx bits allow a fractional divisor to be added to the integer divisor, specified in the RODIVx register bits. EQUATION 9-1: FRACTIONAL DIVISOR FOR ROTRIMx BITS For RODIV<14:0> = 0, No Divide: RODIV<14:0> > 0, Period = 2 * (RODIVx + ROTRIMx) In addition to the CLKO output (FOSC/2) available in certain Oscillator modes, the device clock in the PIC24FJ128GB204 family devices can also be configured to provide a reference clock output signal to a port pin. This feature is available in all oscillator configurations and allows the user to select a greater range of clock submultiples to drive external devices in the application. 9.7.3 This reference clock output is controlled by the REFOCONL, REFOCONH and REFOTRIML registers (Register 9-4, Register 9-5 and Register 9-6). Setting the ROEN bit (REFOCONL<15>) enables the module. Setting the ROOUT bit (REFOCONL<12>) makes the clock signal available on the REFO pin. To use the reference clock output in Sleep mode, the ROSLP bit must be set and the reference base clock should not be the system clock or peripheral clock (ROSELx bits should not be `0b0000' or `0b0001'). The RODIVx bits (REFOCONH<14:0>) enable the selection of 32768 different clock divider options. 9.7.1 CLOCK SOURCE REQUEST The ROSELx bits determine different base clock sources for the module. DS30005009C-page 156 OPERATION IN SLEEP MODE The ROSLP and ROSELx bits (REFOCONL<11,3:0>) control the availability of the reference output during Sleep mode. The ROSLP bit determines if the reference source is available on the REFO pin when the device is in Sleep mode. The device clock must also be configured for either: * One of the Primary modes (EC, HS or XT); the POSCEN bit should be set * The Secondary Oscillator bit (SOSCEN) should be set * The LPRC Oscillator If one of the above conditions is not met, then the oscillators on OSC1, OSC2 and SOSCI will be powered down when the device enters Sleep mode. 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 9-4: REFOCONL: REFERENCE OSCILLATOR CONTROL LOW REGISTER R/W-0 U-0 R/W-0 R/W-0 R/W-0 U-0 R/W-0 R/W-0 ROEN -- ROSIDL ROOUT ROSLP -- ROSWEN ROACTIVE bit 15 bit 8 U-0 U-0 U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 -- -- -- -- ROSEL3 ROSEL2 ROSEL1 ROSEL0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15 ROEN: Reference Oscillator Output Enable bit 1 = Reference oscillator is enabled 0 = Reference oscillator is disabled bit 14 Unimplemented: Read as `0' bit 13 ROSIDL: Reference Oscillator Output Stop in Idle Mode bit 1 = Reference oscillator is disabled in Idle mode 0 = Reference oscillator continues to run in Idle mode bit 12 ROOUT: Reference Clock Output Enable bit 1 = REFO clock output is driven on the REFO pin 0 = REFO clock output is disabled bit 11 ROSLP: Reference Oscillator Output in Sleep Mode bit 1 = Reference oscillator output continues to run in Sleep mode 0 = Reference oscillator output is disabled in Sleep mode bit 10 Unimplemented: Read as `0' bit 9 ROSWEN: Reference Oscillator Clock Source Switch Enable bit 1 = Reference clock source switching is currently in progress 0 = Reference clock source switching has completed bit 8 ROACTIVE: Reference Clock Request Status bit 1 = Reference clock request is active (user should not update the REFOCONL register) 0 = Reference clock request is not active (user can update the REFOCONL register) bit 7-4 Unimplemented: Read as `0' (Reserved for additional ROSELx bits.) bit 3-0 ROSEL<3:0>: Reference Clock Source Select bits Select one of the various clock sources to be used as the reference clock: 1001-1111 = Reserved 1000 = REFI (Reference Clock Input) 0111 = Reserved 0110 = 8x PLL or USB-PLL 0101 = Secondary Oscillator (SOSC) 0100 = Low-Power RC Oscillator (LPRC) 0011 = Fast RC Oscillator (FRC) 0010 = Primary Oscillator (XT, HS, EC) 0001 = Peripheral Clock (PBCLK) - Internal instruction cycle clock, FCY 0000 = System Clock (FOSC) 2013-2015 Microchip Technology Inc. DS30005009C-page 157 PIC24FJ128GB204 FAMILY REGISTER 9-5: U-0 REFOCONH: REFERENCE OSCILLATOR CONTROL HIGH REGISTER R/W-0 R/W-0 R/W-0 -- R/W-0 R/W-0 R/W-0 R/W-0 RODIV<14:8> bit 15 bit 8 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 RODIV<7:0> bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15 Unimplemented: Read as `0' bit 14-0 RODIV<14:0>: Reference Oscillator Divisor Select bits Specifies the 1/2 period of the reference clock in the source clocks. For example: Period of ref_clk_output [Reference Source * 2] * RODIV<14:0>: 111111111111111 = REFO clock is the base clock frequency divided by 65,534 (32,767 * 2) 111111111111110 = REFO clock is the base clock frequency divided by 65,532 (32,766 * 2) * * * 000000000000011 = REFO clock is the base clock frequency divided by 6 (3 * 2) 000000000000010 = REFO clock is the base clock frequency divided by 4 (2 * 2) 000000000000001 = REFO clock is the base clock frequency divided by 2 (1 * 2) 000000000000000 = REFO clock is the same frequency as the base clock (no divider)(1) Note 1: The ROTRIMx values are ignored. DS30005009C-page 158 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 9-6: R/W-0 REFOTRIML: REFERENCE OSCILLATOR TRIM REGISTER R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 ROTRIM<15:8> bit 15 bit 8 R/W-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 ROTRIM7 -- -- -- -- -- -- -- bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-7 ROTRIM<15:7>: Reference Oscillator Trim bits Provides fractional additive to the RODIVx value for the 1/2 period of the REFO clock. 111111111 = 511/512 (0.998046875) divisor added to RODIVx value 111111110 = 510/512 (0.99609375) divisor added to RODIVx value * * * 100000000 = 256/512 (0.5000) divisor added to RODIVx value * * * 000000010 = 2/512 (0.00390625) divisor added to RODIVx value 000000001 = 1/512 (0.001953125) divisor added to RODIVx value 000000000 = 0/512 (0.0) divisor added to RODIV value bit 6-0 Unimplemented: Read as `0' 9.8 On-Chip PLL An on-chip PLL (x4, x6, x8) can be selected by the Configuration bits, PLLDIV<3:0>. The Primary Oscillator and FRC sources (FRCDIV) have the option of using this PLL. TABLE 9-4: Using the internal FRC source, the PLL module can generate the following frequencies, as shown in Table 9-4. VALID FRC CONFIGURATION FOR ON-CHIP PLL(1) FRC RCDIV<2:0> (FRCDIV) x4 PLL x6 PLL x8 PLL 8 MHz 000 (divide-by-1) 32 MHz -- -- 8 MHz 001 (divide-by-2) 16 MHz 24 MHz 32 MHz 8 MHz 010 (divide-by-4) 8 MHz 12 MHz 16 MHz Note 1: The minimum frequency input to the on-chip PLL is 2 MHz. 2013-2015 Microchip Technology Inc. DS30005009C-page 159 PIC24FJ128GB204 FAMILY NOTES: DS30005009C-page 160 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 10.0 POWER-SAVING FEATURES Note: 10.1 This data sheet summarizes the features of this group of PIC24FJ devices. It is not intended to be a comprehensive reference source. For more information, refer to the "dsPIC33/PIC24 Family Reference Manual", "Power-Saving Features with Deep Sleep" (DS39727). The PIC24FJ128GB204 family of devices provides the ability to manage power consumption by selectively managing clocking to the CPU and the peripherals. In general, a lower clock frequency and a reduction in the number of circuits being clocked reduces consumed power. PIC24FJ128GB204 family devices manage power consumption with five strategies: * * * * * Instruction-Based Power Reduction Modes Hardware-Based Power Reduction Features Clock Frequency Control Software Controlled Doze Mode Selective Peripheral Control in Software Overview of Power-Saving Modes In addition to full-power operation, otherwise known as Run mode, the PIC24FJ128GB204 family of devices offers three instruction-based, power-saving modes and one hardware-based mode: * * * * Idle Sleep (Sleep and Low-Voltage Sleep) Deep Sleep VBAT (with and without RTCC) All four modes can be activated by powering down different functional areas of the microcontroller, allowing progressive reductions of operating and Idle power consumption. In addition, three of the modes can be tailored for more power reduction at a trade-off of some operating features. Table 10-1 lists all of the operating modes, in order of increasing power savings. Table 10-2 summarizes how the microcontroller exits the different modes. Specific information is provided in the following sections. Combinations of these methods can be used to selectively tailor an application's power consumption, while still maintaining critical application features, such as timing-sensitive communications. TABLE 10-1: OPERATING MODES FOR PIC24FJ128GB204 FAMILY DEVICES Active Systems Mode Run (default) Idle Entry Core Peripherals Data RAM Retention RTCC(1) DSGPR0/ DSGPR1 Retention N/A Y Y Y Y Y Instruction N Y Y Y Y Instruction N S(2) Y Y Y Instruction + RETEN bit N S(2) Y Y Y Instruction + DSEN bit N N N Y Y Hardware N N N Y Y Sleep: Sleep Low-Voltage Sleep Deep Sleep: Deep Sleep VBAT: with RTCC Note 1: 2: If RTCC is otherwise enabled in firmware. A select peripheral can operate during this mode from LPRC or an external clock. 2013-2015 Microchip Technology Inc. DS30005009C-page 161 PIC24FJ128GB204 FAMILY TABLE 10-2: EXITING POWER-SAVING MODES Exit Conditions All INT0 All POR MCLR RTCC Alarm WDT VDD Restore(2) Code Execution Resumes Idle Y Y Y Y Y Y Y N/A Next instruction Sleep (all modes) Y Y Y Y Y Y Y N/A (1) N/A Reset vector Y Reset vector Mode Interrupts Resets Deep Sleep N Y N Y Y Y VBAT N N N N N N Note 1: 2: 10.1.1 N Deep Sleep WDT. A POR or POR like Reset results whenever VDD is removed and restored in any mode except for Retention Deep Sleep. INSTRUCTION-BASED POWER-SAVING MODES Three of the power-saving modes are entered through the execution of the PWRSAV instruction. Sleep mode stops clock operation and halts all code execution. Idle mode halts the CPU and code execution, but allows peripheral modules to continue operation. Deep Sleep mode stops clock operation, code execution, and all peripherals, except RTCC and DSWDT. It also freezes I/O states and removes power to Flash memory, and may remove power to SRAM. The assembly syntax of the PWRSAV instruction is shown in Example 10-1. Sleep and Idle modes are entered directly with a single assembler command. Deep Sleep requires an additional sequence to unlock and enable the entry into Deep Sleep, which is described in Section 10.4.1 "Entering Deep Sleep Mode". Note: Y SLEEP_MODE and IDLE_MODE are constants defined in the assembler include file for the selected device. Sleep and Idle modes can be exited as a result of an enabled interrupt, WDT time-out or a device Reset. When the device exits these modes, it is said to "wake-up". EXAMPLE 10-1: The features enabled with the low-voltage/retention regulator results in some changes to the way that Sleep and Deep Sleep modes behave. See Section 10.3 "Sleep Mode" and Section 10.4 "Deep Sleep Mode" for additional information. 10.1.1.1 Interrupts Coincident with Power Save Instructions Any interrupt that coincides with the execution of a PWRSAV instruction will be held off until entry into Sleep or Idle mode has completed. The device will then wake-up from Sleep or Idle mode. For Deep Sleep mode, interrupts that coincide with the execution of the PWRSAV instruction may be lost. If the low-voltage/retention regulator is not enabled, the microcontroller resets on leaving Deep Sleep and the interrupt will be lost. Interrupts that occur during the Deep Sleep unlock sequence will interrupt the mandatory five-instruction cycle sequence timing and cause a failure to enter Deep Sleep. For this reason, it is recommended to disable all interrupts during the Deep Sleep unlock sequence. PWRSAV INSTRUCTION SYNTAX // Syntax to enter Sleep mode: PWRSAV #SLEEP_MODE ; Put the device into SLEEP mode // //Synatx to enter Idle mode: PWRSAV #IDLE_MODE ; Put the device into IDLE mode // // Syntax to enter Deep Sleep mode: // First use the unlock sequence to set the DSEN bit (see Example 10-2) BSET DSCON, #DSEN ; Enable Deep Sleep BSET DSCON, #DSEN ; Enable Deep Sleep(repeat the command) PWRSAV #SLEEP_MODE ; Put the device into Deep SLEEP mode DS30005009C-page 162 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 10.1.2 HARDWARE-BASED POWER-SAVING MODE The hardware-based VBAT mode does not require any action by the user during code development. Instead, it is a hardware design feature that allows the microcontroller to retain critical data (using the DSGPRx registers) and maintain the RTCC when VDD is removed from the application. This is accomplished by supplying a backup power source to a specific power pin. VBAT mode is described in more detail in Section 10.5 "VBAT Mode". 10.1.3 LOW-VOLTAGE/RETENTION REGULATOR PIC24FJ128GB204 family devices incorporate a second on-chip voltage regulator, designed to provide power to select microcontroller features at 1.2V nominal. This regulator allows features, such as data RAM and the WDT, to be maintained in power-saving modes, where they would otherwise be inactive, or maintain them at a lower power than would otherwise be the case. The low-voltage/retention regulator is only available when Sleep mode is invoked. It is controlled by the LPCFG Configuration bit (CW1<10>) and in firmware by the RETEN bit (RCON<12>). LPCFG must be programmed (= 0) and the RETEN bit must be set (= 1) for the regulator to be enabled. 10.2 Idle Mode Idle mode includes these features: * The CPU will stop executing instructions. * The WDT is automatically cleared. * The system clock source remains active. By default, all peripheral modules continue to operate normally from the system clock source, but can also be selectively disabled (see Section 10.8 "Selective Peripheral Module Control"). * If the WDT or FSCM is enabled, the LPRC will also remain active. The device will wake from Idle mode on any of these events: * Any interrupt that is individually enabled * Any device Reset * A WDT time-out On wake-up from Idle, the clock is reapplied to the CPU and instruction execution begins immediately, starting with the instruction following the PWRSAV instruction or the first instruction in the Interrupt Service Routine (ISR). 2013-2015 Microchip Technology Inc. 10.3 Sleep Mode Sleep mode includes these features: * The system clock source is shut down. If an on-chip oscillator is used, it is turned off. * The device current consumption will be reduced to a minimum provided that no I/O pin is sourcing current. * The I/O pin directions and states are frozen. * The Fail-Safe Clock Monitor does not operate during Sleep mode since the system clock source is disabled. * The LPRC clock will continue to run in Sleep mode if the WDT or RTCC, with LPRC as the clock source, is enabled. * The WDT, if enabled, is automatically cleared prior to entering Sleep mode. * Some device features or peripherals may continue to operate in Sleep mode. This includes items, such as the Input Change Notification on the I/O ports or peripherals that use an external clock input. Any peripheral that requires the system clock source for its operation will be disabled in Sleep mode. The device will wake-up from Sleep mode on any of these events: * On any interrupt source that is individually enabled * On any form of device Reset * On a WDT time-out On wake-up from Sleep, the processor will restart with the same clock source that was active when Sleep mode was entered. 10.3.1 LOW-VOLTAGE/RETENTION SLEEP MODE Low-Voltage/Retention Sleep mode functions as Sleep mode with the same features and wake-up triggers. The difference is that the low-voltage/retention regulator allows core digital logic voltage (VCORE) to drop to 1.2V nominal. This permits an incremental reduction of power consumption over what would be required if VCORE was maintained at a 1.8V (minimum) level. Low-Voltage Sleep mode requires a longer wake-up time than Sleep mode, due to the additional time required to bring VCORE back to 1.8V (known as TREG). In addition, the use of the low-voltage/retention regulator limits the amount of current that can be sourced to any active peripherals, such as the RTCC, etc. DS30005009C-page 163 PIC24FJ128GB204 FAMILY 10.4 Deep Sleep Mode Deep Sleep mode provides the lowest levels of power consumption available from the instruction-based modes. Deep Sleep modes have these features: * The system clock source is shut down. If an on-chip oscillator is used, it is turned off. * The device current consumption will be reduced to a minimum. * The I/O pin directions and states are frozen. * The Fail-Safe Clock Monitor does not operate during Sleep mode since the system clock source is disabled. * The LPRC clock will continue to run in Deep Sleep mode if the WDT, or RTCC with LPRC as the clock source, is enabled. * The dedicated Deep Sleep WDT and BOR systems, if enabled, are used. * The RTCC and its clock source continue to run, if enabled. All other peripherals are disabled. Entry into Deep Sleep mode is completely under software control. Exit from the Deep Sleep modes can be triggered from any of the following events: * * * * * POR event MCLR event RTCC alarm (If the RTCC is present) External Interrupt 0 Deep Sleep Watchdog Timer (DSWDT) time-out 10.4.1 ENTERING DEEP SLEEP MODE Deep Sleep mode is entered by setting the DSEN bit in the DSCON register and then executing a Sleep command (PWRSAV #SLEEP_MODE), within one instruction cycle, to minimize the chance that Deep Sleep will be spuriously entered. If the PWRSAV command is not given within one instruction cycle, the DSEN bit will be cleared by the hardware and must be set again by the software before entering Deep Sleep mode. The DSEN bit is also automatically cleared when exiting Deep Sleep mode. Note: To re-enter Deep Sleep after a Deep Sleep wake-up, allow a delay of at least 3 TCY after clearing the RELEASE bit. DS30005009C-page 164 The sequence to enter Deep Sleep mode is: 1. 2. 3. 4. 5. If the application requires the Deep Sleep WDT, enable it and configure its clock source. For more information on Deep Sleep WDT, see Section 10.4.5 "Deep Sleep WDT". If the application requires Deep Sleep BOR, enable it by programming the DSBOREN Configuration bit (CW4<6>). If the application requires wake-up from Deep Sleep on RTCC alarm, enable and configure the RTCC module. For more information on RTCC, see Section 22.0 "Real-Time Clock and Calendar (RTCC)". If needed, save any critical application context data by writing it to the DSGPR0 and DSGPR1 registers (optional). Enable Deep Sleep mode by setting the DSEN bit (DSCON<15>). Note: 6. A repeat sequence is required to set the DSEN bit. The repeat sequence (repeating the instruction twice) is required to write into any of the Deep Sleep registers (DSCON, DSWAKE, DSGPR0, DSGPR1). This is required to prevent the user from entering Deep Sleep by mistake. Any write to these registers has to be done twice to actually complete the write (see Example 10-2). Enter Deep Sleep mode by issuing 3 NOP commands and then a PWRSAV #0 instruction. Any time the DSEN bit is set, all bits in the DSWAKE register will be automatically cleared. EXAMPLE 10-2: Example 1: mov #8000, w2 mov w2, DSCON mov w2, DSCON THE REPEAT SEQUENCE ; enable DS ; second write required to actually write to DSCON Example 2: bset DSCON, #15 nop nop nop bset DSCON, #15 ; enable DS (two writes required) 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 10.4.2 EXITING DEEP SLEEP MODES Deep Sleep modes exit on any one of the following events: * POR event on VDD supply. If there is no DSBOR circuit to re-arm the VDD supply POR circuit, the external VDD supply must be lowered to the natural arming voltage of the POR circuit. * DSWDT time-out. When the DSWDT times out, the device exits Deep Sleep. * RTCC alarm (if RTCEN = 1). * Assertion (`0') of the MCLR pin. * Assertion of the INT0 pin (if the interrupt was enabled before Deep Sleep mode was entered). The polarity configuration is used to determine the assertion level (`0' or `1') of the pin that will cause an exit from Deep Sleep mode. Exiting from Deep Sleep mode requires a change on the INT0 pin while in Deep Sleep mode. Note: Wake-up events that occur from the time Deep Sleep exits, until the time the POR sequence completes, are not ignored. The DSWAKE register will capture ALL wake-up events, from setting the DSEN bit to clearing the RELEASE bit. The sequence for exiting Deep Sleep mode is: 2. 3. 4. 5. 6. After a wake-up event, the device exits Deep Sleep and performs a POR. The DSEN bit is cleared automatically. Code execution resumes at the Reset vector. To determine if the device exited Deep Sleep, read the Deep Sleep bit, DPSLP (RCON<10>). This bit will be set if there was an exit from Deep Sleep mode. If the bit is set, clear it. Determine the wake-up source by reading the DSWAKE register. Determine if a DSBOR event occurred during Deep Sleep mode by reading the DSBOR bit (DSCON<1>). If application context data has been saved, read it back from the DSGPR0 and DSGPR1 registers. Clear the RELEASE bit (DSCON<0>). 2013-2015 Microchip Technology Inc. SAVING CONTEXT DATA WITH THE DSGPRx REGISTERS As exiting Deep Sleep mode causes a POR, most Special Function Registers reset to their default POR values. In addition, because VCORE power is not supplied in Deep Sleep mode, information in data RAM may be lost when exiting this mode. Applications which require critical data to be saved prior to Deep Sleep, may use the Deep Sleep General Purpose registers, DSGPR0 and DSGPR1, or data EEPROM (if available). Unlike other SFRs, the contents of these registers are preserved while the device is in Deep Sleep mode. After exiting Deep Sleep, software can restore the data by reading the registers and clearing the RELEASE bit (DSCON<0>). Note: Any interrupt pending when entering Deep Sleep mode is cleared. Exiting Deep Sleep generally does not retain the state of the device and is equivalent to a Power-on Reset (POR) of the device. Exceptions to this include the RTCC (if present), which remains operational through the wake-up, the DSGPRx registers and the DSWDT. 1. 10.4.3 10.4.4 User software should enable the DSSWEN (CW4<8>) Configuration Fuse bit for saving critical data in the DSGPRx registers. I/O PINS IN DEEP SLEEP MODES During Deep Sleep, the general purpose I/O pins retain their previous states and the Secondary Oscillator (SOSC) will remain running, if enabled. Pins that are configured as inputs (TRISx bit set), prior to entry into Deep Sleep, remain high-impedance during Deep Sleep. Pins that are configured as outputs (TRISx bit clear), prior to entry into Deep Sleep, remain as output pins during Deep Sleep. While in this mode, they continue to drive the output level determined by their corresponding LATx bit at the time of entry into Deep Sleep. Once the device wakes back up, all I/O pins continue to maintain their previous states, even after the device has finished the POR sequence and is executing application code again. Pins configured as inputs during Deep Sleep remain high-impedance and pins configured as outputs continue to drive their previous value. After waking up, the TRISx and LATx registers, and the SOSCEN bit (OSCCON<1>) are reset. If firmware modifies any of these bits or registers, the I/O will not immediately go to the newly configured states. Once the firmware clears the RELEASE bit (DSCON<0>), the I/O pins are "released". This causes the I/O pins to take the states configured by their respective TRISx and LATx bit values. This means that keeping the SOSC running after waking up requires the SOSCEN bit to be set before clearing RELEASE. If the Deep Sleep BOR (DSBOR) is enabled, and a DSBOR or a true POR event occurs during Deep Sleep, the I/O pins will be immediately released, similar to clearing the RELEASE bit. All previous state information will be lost, including the general purpose DSGPR0 and DSGPR1 contents. DS30005009C-page 165 PIC24FJ128GB204 FAMILY If a MCLR Reset event occurs during Deep Sleep, the DSGPRx, DSCON and DSWAKE registers will remain valid, and the RELEASE bit will remain set. The state of the SOSC will also be retained. The I/O pins, however, will be reset to their MCLR Reset state. Since RELEASE is still set, changes to the SOSCEN bit (OSCCON<1>) cannot take effect until the RELEASE bit is cleared. In all other Deep Sleep wake-up cases, application firmware must clear the RELEASE bit in order to reconfigure the I/O pins. 10.4.5 DEEP SLEEP WDT To enable the DSWDT in Deep Sleep mode, program the Configuration bit, DSWDTEN (CW4<7>). The device WDT need not be enabled for the DSWDT to function. Entry into Deep Sleep modes automatically resets the DSWDT. The DSWDT clock source is selected by the DSWDTOSC Configuration bit (CW4<5>). The postscaler options are programmed by the DSWDTPS<4:0> Configuration bits (CW4<4:0>). The minimum time-out period that can be achieved is 1 ms and the maximum is 25.7 days. For more information on the CW4 Configuration register and DSWDT configuration options, refer to Section 30.0 "Special Features". 10.4.5.1 Switching Clocks in Deep Sleep Mode Both the RTCC and the DSWDT may run from either SOSC or the LPRC clock source. This allows both the RTCC and DSWDT to run without requiring both the LPRC and SOSC to be enabled together, reducing power consumption. Running the RTCC from LPRC will result in a loss of accuracy in the RTCC of approximately 5 to 10%. If a more accurate RTCC is required, it must be run from the SOSC clock source. The RTCC clock source is selected with the RTCLK<1:0> bits (RTCPWC<11:10>). Under certain circumstances, it is possible for the DSWDT clock source to be off when entering Deep Sleep mode. In this case, the clock source is turned on automatically (if DSWDT is enabled), without the need for software intervention. However, this can cause a delay in the start of the DSWDT counters. In order to avoid this delay when using SOSC as a clock source, the application can activate SOSC prior to entering Deep Sleep mode. 10.4.6 CHECKING AND CLEARING THE STATUS OF DEEP SLEEP Upon entry into Deep Sleep mode, the status bit, DPSLP (RCON<10>), becomes set and must be cleared by the software. DS30005009C-page 166 On power-up, the software should read this status bit to determine if the Reset was due to an exit from Deep Sleep mode and clear the bit if it is set. Of the four possible combinations of DPSLP and POR bit states, the following three cases can be considered: * Both the DPSLP and POR bits are cleared. In this case, the Reset was due to some event other than a Deep Sleep mode exit. * The DPSLP bit is clear, but the POR bit is set; this is a normal Power-on Reset. * Both the DPSLP and POR bits are set. This means that Deep Sleep mode was entered, the device was powered down and Deep Sleep mode was exited. 10.4.7 POWER-ON RESETS (PORs) VDD voltage is monitored to produce PORs. Since exiting from Deep Sleep mode functionally looks like a POR, the technique described in Section 10.4.6 "Checking and Clearing the Status of Deep Sleep" should be used to distinguish between Deep Sleep and a true POR event. When a true POR occurs, the entire device, including all Deep Sleep logic (Deep Sleep registers, RTCC, DSWDT, etc.) is reset. 10.5 VBAT Mode This mode represents the lowest power state that the microcontroller can achieve and still resume operation. VBAT mode is automatically triggered when the microcontroller's main power supply on VDD fails. When this happens, the microcontroller's on-chip power switch connects to a backup power source, such as a battery, supplied to the VBAT pin. This maintains a few key systems at an extremely low-power draw until VDD is restored. The power supplied on VBAT only runs two systems: the RTCC and the Deep Sleep Semaphore registers (DSGPR0 and DSGPR1). To maintain these systems during a sudden loss of VDD, it is essential to connect a power source, other than VDD or AVDD, to the VBAT pin. When the RTCC is enabled, it continues to operate with the same clock source (SOSC or LPRC) that was selected prior to entering VBAT mode. There is no provision to switch to a lower power clock source after the mode switch. Since the loss of VDD is usually an unforeseen event, it is recommended that the contents of the Deep Sleep Semaphore registers be loaded with the data to be retained at an early point in code execution. 10.5.1 VBAT MODE WITH NO RTCC By disabling RTCC operation during VBAT mode, power consumption is reduced to the lowest of all power-saving modes. In this mode, only the Deep Sleep Semaphore registers are maintained. 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 10.5.2 WAKE-UP FROM VBAT MODES When VDD is restored to a device in VBAT mode, it automatically wakes. Wake-up occurs with a POR, after which, the device starts executing code from the Reset vector. All SFRs, except the Deep Sleep Semaphores, are reset to their POR values. IF the RTCC was not configured to run during VBAT mode, it will remain disabled and RTCC will not run. Wake-up timing is similar to that for a normal POR. To differentiate a wake-up from VBAT mode, from other POR states, check the VBAT status bit (RCON2<0>). If this bit is set while the device is starting to execute the code from the Reset vector, it indicates that there has been an exit from VBAT mode. The application must clear the VBAT bit to ensure that future VBAT wake-up events are captured. If a POR occurs without a power source connected to the VBAT pin, the VBPOR bit (RCON2<1>) is set. If this bit is set on a Power-on Reset, it indicates that a battery needs to be connected to the VBAT pin. In addition, if the VBAT power source falls below the level needed for Deep Sleep Semaphore operation while in VBAT mode (e.g., the battery has been drained), the VBPOR bit will be set. VBPOR is also set when the microcontroller is powered up the very first time, even if power is supplied to VBAT. 2013-2015 Microchip Technology Inc. 10.5.3 I/O PINS DURING VBAT MODES All I/O pins switch to Input mode during VBAT mode. The only exceptions are the SOSCI and SOSCO pins, which maintain their states if the Secondary Oscillator is being used as the RTCC clock source. It is the user's responsibility to restore the I/O pins to their proper states using the TRISx and LATx bits once VDD has been restored. 10.5.4 SAVING CONTEXT DATA WITH THE DSGPRx REGISTERS As with Deep Sleep mode (i.e., without the low-voltage/retention regulator), all SFRs are reset to their POR values after VDD has been restored. Only the Deep Sleep Semaphore registers are preserved. Applications which require critical data to be saved should save it in DSGPR0 and DSGPR1. Note: If the VBAT mode is not used, it is recommended to connect the VBAT pin to VDD. The POR should be enabled for the reliable operation of the VBAT. DS30005009C-page 167 PIC24FJ128GB204 FAMILY DSCON: DEEP SLEEP CONTROL REGISTER(1) REGISTER 10-1: R/W-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 DSEN -- -- -- -- -- -- -- bit 15 bit 8 U-0 U-0 -- -- U-0 -- U-0 -- U-0 -- r-0 -- R/W-0 DSBOR (2) R/C-0, HS RELEASE bit 7 bit 0 Legend: C = Clearable bit U = Unimplemented bit, read as `0' R = Readable bit W = Writable bit HS = Hardware Settable bit r = Reserved bit -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15 DSEN: Deep Sleep Enable bit 1 = Enters Deep Sleep on execution of PWRSAV #0 0 = Enters normal Sleep on execution of PWRSAV #0 bit 14-3 Unimplemented: Read as `0' bit 2 Reserved: Maintain as `0' bit 1 DSBOR: Deep Sleep BOR Event bit(2) 1 = The DSBOR was active and a BOR event was detected during Deep Sleep 0 = The DSBOR was not active, or was active, but did not detect a BOR event during Deep Sleep bit 0 RELEASE: I/O Pin State Release bit 1 = Upon waking from Deep Sleep, I/O pins maintain their states previous to the Deep Sleep entry 0 = Releases I/O pins from their state previous to Deep Sleep entry, and allows their respective TRISx and LATx bits to control their states Note 1: 2: All register bits are reset only in the case of a POR event outside of Deep Sleep mode. Unlike all other events, a Deep Sleep BOR event will NOT cause a wake-up from Deep Sleep; this re-arms the POR. DS30005009C-page 168 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 10-2: DSWAKE: DEEP SLEEP WAKE-UP SOURCE REGISTER(1) U-0 U-0 U-0 U-0 U-0 U-0 U-0 R/W-0, HS -- -- -- -- -- -- -- DSINT0 bit 15 bit 8 R/W-0, HS U-0 U-0 R/W-0, HS R/W-0, HS R/W-0, HS U-0 U-0 DSFLT -- -- DSWDT DSRTCC DSMCLR -- -- bit 7 bit 0 Legend: HS = Hardware Settable bit R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-9 Unimplemented: Read as `0' bit 8 DSINT0: Deep Sleep Interrupt-on-Change bit 1 = Interrupt-on-change was asserted during Deep Sleep 0 = Interrupt-on-change was not asserted during Deep Sleep bit 7 DSFLT: Deep Sleep Fault Detect bit 1 = A Fault occurred during Deep Sleep and some Deep Sleep configuration settings may have been corrupted 0 = No Fault was detected during Deep Sleep bit 6-5 Unimplemented: Read as `0' bit 4 DSWDT: Deep Sleep Watchdog Timer Time-out bit 1 = The Deep Sleep Watchdog Timer timed out during Deep Sleep 0 = The Deep Sleep Watchdog Timer did not time out during Deep Sleep bit 3 DSRTCC: Deep Sleep Real-Time Clock and Calendar Alarm bit 1 = The Real-Time Clock and Calendar triggered an alarm during Deep Sleep 0 = The Real-Time Clock and Calendar did not trigger an alarm during Deep Sleep bit 2 DSMCLR: Deep Sleep MCLR Event bit 1 = The MCLR pin was active and was asserted during Deep Sleep 0 = The MCLR pin was not active, or was active, but not asserted during Deep Sleep bit 1-0 Unimplemented: Read as `0' Note 1: All register bits are cleared when the DSEN (DSCON<15>) bit is set. 2013-2015 Microchip Technology Inc. DS30005009C-page 169 PIC24FJ128GB204 FAMILY REGISTER 10-3: RCON2: RESET AND SYSTEM CONTROL REGISTER 2 U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 15 bit 8 U-0 U-0 U-0 r-0 -- -- -- -- R/CO-1 R/CO-1 VDDBOR(1) VDDPOR(1,2) R/CO-1 R/CO-0 VBPOR(1,3) VBAT(1) bit 7 bit 0 Legend: CO = Clearable Only bit r = Reserved bit R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-5 Unimplemented: Read as `0' bit 4 Reserved: Maintain as `0' bit 3 VDDBOR: VDD Brown-out Reset Flag bit(1) 1 = A VDD Brown-out Reset has occurred (set by hardware) 0 = A VDD Brown-out Reset has not occurred bit 2 VDDPOR: VDD Power-on Reset Flag bit(1,2) 1 = A VDD Power-on Reset has occurred (set by hardware) 0 = A VDD Power-on Reset has not occurred bit 1 VBPOR: VBAT Power-on Reset Flag bit(1,3) 1 = A VBAT POR has occurred (no battery connected to the VBAT pin or VBAT power is below Deep Sleep Semaphore retention level; set by hardware) 0 = A VBAT POR has not occurred bit 0 VBAT: VBAT Flag bit(1) 1 = A POR exit has occurred while power is applied to the VBAT pin (set by hardware) 0 = A POR exit from VBAT has not occurred Note 1: 2: 3: This bit is set in hardware only; it can only be cleared in software. This bit indicates a VDD Power-on Reset. Setting the POR bit (RCON<0>) indicates a VCORE Power-on Reset. This bit is set when the device is originally powered up, even if power is present on VBAT. DS30005009C-page 170 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 10.6 Clock Frequency and Clock Switching In Run and Idle modes, all PIC24FJ devices allow for a wide range of clock frequencies to be selected under application control. If the system clock configuration is not locked, users can choose low-power or high-precision oscillators by simply changing the NOSCx bits. The process of changing a system clock during operation, as well as limitations to the process, are discussed in more detail in Section 9.0 "Oscillator Configuration". 10.7 Doze Mode Generally, changing clock speed and invoking one of the power-saving modes are the preferred strategies for reducing power consumption. There may be circumstances, however, where this is not practical. For example, it may be necessary for an application to maintain uninterrupted synchronous communication, even while it is doing nothing else. Reducing system clock speed may introduce communication errors, while using a power-saving mode may stop communications completely. Doze mode is a simple and effective alternative method to reduce power consumption while the device is still executing code. In this mode, the system clock continues to operate from the same source and at the same speed. Peripheral modules continue to be clocked at the same speed, while the CPU clock speed is reduced. Synchronization between the two clock domains is maintained, allowing the peripherals to access the SFRs while the CPU executes code at a slower rate. Doze mode is enabled by setting the DOZEN bit (CLKDIV<11>). The ratio between peripheral and core clock speed is determined by the DOZE<2:0> bits (CLKDIV<14:12>). There are eight possible configurations, from 1:1 to 1:128, with 1:1 being the default. It is also possible to use Doze mode to selectively reduce power consumption in event driven applications. This allows clock-sensitive functions, such as synchronous communications, to continue without interruption while the CPU Idles, waiting for something to invoke an interrupt routine. Enabling the automatic return to full-speed CPU operation on interrupts is enabled by setting the ROI bit (CLKDIV<15>). By default, interrupt events have no effect on Doze mode operation. 2013-2015 Microchip Technology Inc. 10.8 Selective Peripheral Module Control Idle and Doze modes allow users to substantially reduce power consumption by slowing or stopping the CPU clock. Even so, peripheral modules still remain clocked, and thus, consume power. There may be cases where the application needs what these modes do not provide: the allocation of power resources to CPU processing, with minimal power consumption from the peripherals. PIC24F devices address this requirement by allowing peripheral modules to be selectively disabled, reducing or eliminating their power consumption. This can be done with two control bits: * The Peripheral Enable bit, generically named, "XXXEN", located in the module's main control SFR. * The Peripheral Module Disable (PMD) bit, generically named, "XXXMD", located in one of the PMDx Control registers (XXXMD bits are in the PMD1, PMD2, PMD3, PMD4, PMD6, PMD7, PMD8 registers). Both bits have similar functions in enabling or disabling its associated module. Setting the PMD bit for a module disables all clock sources to that module, reducing its power consumption to an absolute minimum. In this state, the control and status registers associated with the peripheral will also be disabled, so writes to those registers will have no effect and read values will be invalid. Many peripheral modules have a corresponding PMD bit. In contrast, disabling a module by clearing its XXXEN bit disables its functionality, but leaves its registers available to be read and written to. Power consumption is reduced, but not by as much as the use of the PMD bits. Most peripheral modules have an enable bit; exceptions include capture, compare and RTCC. To achieve more selective power savings, peripheral modules can also be selectively disabled when the device enters Idle mode. This is done through the control bit of the generic name format, "XXXSIDL". By default, all modules that can operate during Idle mode will do so. Using the disable on Idle feature disables the module while in Idle mode, allowing further reduction of power consumption during Idle mode, enhancing power savings for extremely critical power applications. DS30005009C-page 171 PIC24FJ128GB204 FAMILY NOTES: DS30005009C-page 172 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 11.0 Note: I/O PORTS This data sheet summarizes the features of this group of PIC24F devices. It is not intended to be a comprehensive reference source. For more information, refer to the "dsPIC33/PIC24 Family Reference Manual", "I/O Ports with Peripheral Pin Select (PPS)" (DS39711). The information in this data sheet supersedes the information in the FRM. All of the device pins (except VDD, VSS, MCLR and OSCI/CLKI) are shared between the peripherals and the Parallel I/O ports. All I/O input ports feature Schmitt Trigger (ST) inputs for improved noise immunity. 11.1 Parallel I/O (PIO) Ports A Parallel I/O port that shares a pin with a peripheral is, in general, subservient to the peripheral. The peripheral's output buffer data and control signals are provided to a pair of multiplexers. The multiplexers select whether the peripheral or the associated port has ownership of the output data and control signals of the I/O pin. The logic also prevents "loop through", in which a port's digital output can drive the input of a peripheral that shares the same pin. Figure 11-1 shows how ports are shared with other peripherals and the associated I/O pin to which they are connected. FIGURE 11-1: When a peripheral is enabled and the peripheral is actively driving an associated pin, the use of the pin as a general purpose output pin is disabled. The I/O pin may be read, but the output driver for the parallel port bit will be disabled. If a peripheral is enabled, but the peripheral is not actively driving a pin, that pin may be driven by a port. All port pins have three registers directly associated with their operation as digital I/Os and one register associated with their operation as analog inputs. The Data Direction register (TRIS) determines whether the pin is an input or an output. If the data direction bit is a `1', then the pin is an input. All port pins are defined as inputs after a Reset. Reads from the Output Latch register (LAT), read the latch; writes to the latch, write the latch. Reads from the port (PORT), read the port pins; writes to the port pins, write the latch. Any bit, and its associated data and control registers that are not valid for a particular device, will be disabled. That means the corresponding LATx and TRISx registers, and the port pin, will read as zeros. When a pin is shared with another peripheral or function that is defined as an input only, it is regarded as a dedicated port because there is no other competing source of inputs. BLOCK DIAGRAM OF A TYPICAL SHARED PORT STRUCTURE Peripheral Module Output Multiplexers Peripheral Input Data Peripheral Module Enable Peripheral Output Enable Peripheral Output Data PIO Module Read TRISx Data Bus WR TRISx I/O 1 Output Enable 0 1 Output Data 0 D Q I/O Pin CK TRISx Latch D WR LATx + WR PORTx Q CK Data Latch Read LATx Input Data Read PORTx 2013-2015 Microchip Technology Inc. DS30005009C-page 173 PIC24FJ128GB204 FAMILY 11.1.1 11.2 I/O PORT WRITE/READ TIMING One instruction cycle is required between a port direction change or port write operation and a read operation of the same port. Typically, this instruction would be a NOP. 11.1.2 OPEN-DRAIN CONFIGURATION In addition to the PORTx, LATx and TRISx registers for data control, each port pin can also be individually configured for either a digital or open-drain output. This is controlled by the Open-Drain Control register, ODCx, associated with each port. Setting any of the bits configures the corresponding pin to act as an open-drain output. The open-drain feature allows the generation of outputs higher than VDD (e.g., 5V), on any desired digital only pins, by using external pull-up resistors. The maximum open-drain voltage allowed is the same as the maximum VIH specification. Configuring Analog Port Pins (ANSx) The ANSx and TRISx registers control the operation of the pins with analog function. Each port pin with analog function is associated with one of the ANSx bits (see Register 11-1 through Register 11-3), which decides if the pin function should be analog or digital. Refer to Table 11-1 for detailed behavior of the pin for different ANSx and TRISx bit settings. When reading the PORTx register, all pins configured as analog input channels will read as cleared (a low level). 11.2.1 ANALOG INPUT PINS AND VOLTAGE CONSIDERATIONS The voltage tolerance of pins used as device inputs is dependent on the pin's input function. Most input pins are able to handle DC voltages of up to 5.5V, a level typical for digital logic circuits. However, several pins can only tolerate voltages up to VDD. Voltage excursions beyond VDD on these pins should always be avoided. Table 11-2 summarizes the different voltage tolerances. For more information, refer to Section 33.0 "Electrical Characteristics" for more details. TABLE 11-1: CONFIGURING ANALOG/DIGITAL FUNCTION OF AN I/O PIN Pin Function Analog Input ANSx Setting TRISx Setting Comments 1 1 It is recommended to keep ANSx = 1. Analog Output 1 1 It is recommended to keep ANSx = 1. Digital Input 0 1 Firmware must wait at least one instruction cycle after configuring a pin as a digital input before a valid input value can be read. Digital Output 0 0 Make sure to disable the analog output function on the pin if any is present. TABLE 11-2: INPUT VOLTAGE LEVELS FOR PORT OR PIN TOLERATED DESCRIPTION INPUT Port or Pin Tolerated Input Description 5.5V Tolerates input levels above VDD; useful for most standard logic. VDD Only VDD input levels are tolerated. PORTA<10:7,4>(1) PORTB<11:10,8:4> PORTC<9:3>(1) PORTA<3:0> PORTB<15:13,9,3:0> PORTC<2:0>(1) Note 1: Not all of these pins are implemented in 28-pin devices. Refer to Section 1.0 "Device Overview" for a complete description of port pin implementation. DS30005009C-page 174 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 11-1: ANSA: PORTA ANALOG FUNCTION SELECTION REGISTER U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 15 bit 8 U-0 U-0 U-0 U-0 -- -- -- -- R/W-1 R/W-1 R/W-1 R/W-1 ANSA<3:0> bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-4 Unimplemented: Read as `0' bit 3-0 ANSA<3:0>: PORTA Analog Function Selection bits 1 = Pin is configured in Analog mode; I/O port read is disabled 0 = Pin is configured in Digital mode; I/O port read is enabled REGISTER 11-2: R/W-1 x = Bit is unknown ANSB: PORTB ANALOG FUNCTION SELECTION REGISTER R/W-1 R/W-1 ANSB<15:13> U-0 U-0 U-0 R/W-1 U-0 -- -- -- ANSB9 -- bit 15 bit 8 U-0 R/W-1 U-0 U-0 -- ANSB6 -- -- R/W-1 R/W-1 R/W-1 R/W-1 ANSB<3:0> bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-13 ANSB<15:13>: PORTB Analog Function Selection bits 1 = Pin is configured in Analog mode; I/O port read is disabled 0 = Pin is configured in Digital mode; I/O port read is enabled bit 12-10 Unimplemented: Read as `0' bit 9 ANSB9: PORTB Analog Function Selection bit 1 = Pin is configured in Analog mode; I/O port read is disabled 0 = Pin is configured in Digital mode; I/O port read is enabled bit 8-7 Unimplemented: Read as `0' bit 6 ANSB6: PORTB Analog Function Selection bit 1 = Pin is configured in Analog mode; I/O port read is disabled 0 = Pin is configured in Digital mode; I/O port read is enabled bit 5-4 Unimplemented: Read as `0' bit 3-0 ANSB<3:0>: PORTB Analog Function Selection bits 1 = Pin is configured in Analog mode; I/O port read is disabled 0 = Pin is configured in Digital mode; I/O port read is enabled 2013-2015 Microchip Technology Inc. x = Bit is unknown DS30005009C-page 175 PIC24FJ128GB204 FAMILY ANSC: PORTC ANALOG FUNCTION SELECTION REGISTER(1) REGISTER 11-3: U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 15 bit 8 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- R/W-1 R/W-1 R/W-1 ANSC<2:0> bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-3 Unimplemented: Read as `0' bit 2-0 ANSC<2:0>: Analog Function Selection bits 1 = Pin is configured in Analog mode; I/O port read is disabled 0 = Pin is configured in Digital mode; I/O port read is enabled Note 1: x = Bit is unknown These pins are not available in 28-pin devices. DS30005009C-page 176 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 11.3 Input Change Notification (ICN) The Input Change Notification function of the I/O ports allows the PIC24FJ128GB204 family of devices to generate interrupt requests to the processor in response to a Change-of-State (COS) on selected input pins. This feature is capable of detecting input Change-of-States, even in Sleep mode, when the clocks are disabled. Depending on the device pin count, there are up to 82 external inputs that may be selected (enabled) for generating an interrupt request on a Change-of-State. Registers, CNEN1 through CNEN3, contain the interrupt enable control bits for each of the CN input pins. Setting any of these bits enables a CN interrupt for the corresponding pins. Each CN pin has both a weak pull-up and a weak pull-down connected to it. The pull-ups act as a current source that is connected to the pin, while the pull-downs act as a current sink that is connected to the pin. These eliminate the need for external resistors when push button or keypad devices are connected. The pull-ups and pull-downs are separately enabled using the CNPU1 through CNPU3 registers (for pull-ups), and the CNPD1 through CNPD3 registers (for pull-downs). Each CN pin has individual control bits for its pull-up and pull-down. Setting a control bit enables the weak pull-up or pull-down for the corresponding pin. When the internal pull-up is selected, the pin pulls up to VDD - 1.1V (typical). When the internal pull-down is selected, the pin pulls down to VSS. Note: EXAMPLE 11-1: MOV MOV NOP BTSS 0xFF00, W0 W0, TRISB PORTB, #13 EXAMPLE 11-2: Pull-ups on Input Change Notification pins should always be disabled whenever the port pin is configured as a digital output. PORT READ/WRITE IN ASSEMBLY ; ; ; ; Configure PORTB<15:8> as inputs and PORTB<7:0> as outputs Delay 1 cycle Next Instruction PORT READ/WRITE IN `C' TRISB = 0xFF00; Nop(); If (PORTBbits.RB13){ }; 2013-2015 Microchip Technology Inc. // Configure PORTB<15:8> as inputs and PORTB<7:0> as outputs // Delay 1 cycle // Next Instruction DS30005009C-page 177 PIC24FJ128GB204 FAMILY 11.4 Peripheral Pin Select (PPS) A major challenge in general purpose devices is providing the largest possible set of peripheral features while minimizing the conflict of features on I/O pins. In an application that needs to use more than one peripheral multiplexed on a single pin, inconvenient work arounds in application code, or a complete redesign, may be the only option. The Peripheral Pin Select (PPS) feature provides an alternative to these choices by enabling the user's peripheral set selection and its placement on a wide range of I/O pins. By increasing the pinout options available on a particular device, users can better tailor the microcontroller to their entire application, rather than trimming the application to fit the device. The Peripheral Pin Select feature operates over a fixed subset of digital I/O pins. Users may independently map the input and/or output of any one of many digital peripherals to any one of these I/O pins. PPS is performed in software and generally does not require the device to be reprogrammed. Hardware safeguards are included that prevent accidental or spurious changes to the peripheral mapping once it has been established. 11.4.1 AVAILABLE PINS The PPS feature is used with a range of up to 44 pins, depending on the particular device and its pin count. Pins that support the Peripheral Pin Select feature include the designation, "RPn" or "RPIn", in their full pin designation, where "n" is the remappable pin number. "RP" is used to designate pins that support both remappable input and output functions, while "RPI" indicates pins that support remappable input functions only. PIC24FJ128GB204 family devices support a larger number of remappable input only pins than remappable input/output pins. In this device family, there are up to 25 remappable input/output pins, depending on the pin count of the particular device selected. These pins are numbered, RP0 through RP25. See Table 1-3 for a summary of pinout options in each package offering. 11.4.2 AVAILABLE PERIPHERALS The peripherals managed by the PPS are all digital only peripherals. These include general serial communications (UART and SPI), general purpose timer clock inputs, timer related peripherals (input capture and output compare) and external interrupt inputs. Also included are the outputs of the comparator module, since these are discrete digital signals. DS30005009C-page 178 PPS is not available for these peripherals: * * * * * * * I2CTM (input and output) USB (all module inputs and outputs) Change Notification Inputs RTCC Alarm Output(s) EPMP Signals (input and output) Analog (inputs and outputs) INT0 A key difference between pin select and non-pin select peripherals is that pin select peripherals are not associated with a default I/O pin. The peripheral must always be assigned to a specific I/O pin before it can be used. In contrast, non-pin select peripherals are always available on a default pin, assuming that the peripheral is active and not conflicting with another peripheral. 11.4.2.1 Peripheral Pin Select Function Priority Pin-selectable peripheral outputs (e.g., OC, UART transmit) will take priority over general purpose digital functions on a pin, such as EPMP and port I/O. Specialized digital outputs (e.g., USB on USB-enabled devices) will take priority over PPS outputs on the same pin. The pin diagrams list peripheral outputs in the order of priority. Refer to them for priority concerns on a particular pin. Unlike PIC24F devices with fixed peripherals, pin-selectable peripheral inputs will never take ownership of a pin. The pin's output buffer will be controlled by the TRISx setting or by a fixed peripheral on the pin. If the pin is configured in Digital mode, then the PPS input will operate correctly. If an analog function is enabled on the pin, the PPS input will be disabled. 11.4.3 CONTROLLING PERIPHERAL PIN SELECT PPS features are controlled through two sets of Special Function Registers (SFRs): one to map peripheral inputs and one to map outputs. Because they are separately controlled, a particular peripheral's input and output (if the peripheral has both) can be placed on any selectable function pin without constraint. The association of a peripheral to a peripheral-selectable pin is handled in two different ways, depending on if an input or an output is being mapped. 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 11.4.3.1 Input Mapping The inputs of the Peripheral Pin Select options are mapped on the basis of the peripheral; that is, a control register associated with a peripheral dictates the pin it will be mapped to. The RPINRx registers are used to configure peripheral input mapping (see Register 11-4 through Register 11-22). TABLE 11-3: Each register contains two sets of 6-bit fields, with each set associated with one of the pin-selectable peripherals. Programming a given peripheral's bit field with an appropriate 6-bit value maps the RPn/RPIn pin with that value to that peripheral. For any given device, the valid range of values for any of the bit fields corresponds to the maximum number of Peripheral Pin Selections supported by the device. SELECTABLE INPUT SOURCES (MAPS INPUT TO FUNCTION)(1) Function Name Register Function Mapping Bits DSM Modulation Input MDMIN RPINR30 MDMIR<5:0> DSM Carrier 1 Input MDCIN1 RPINR31 MDC1R<5:0> DSM Carrier 2 Input MDCIN2 RPINR31 MDC2R<5:0> External Interrupt 1 INT1 RPINR0 INT1R<5:0> External Interrupt 2 INT2 RPINR1 INT2R<5:0> External Interrupt 3 INT3 RPINR1 INT3R<5:0> External Interrupt 4 INT4 RPINR2 INT4R<5:0> Input Capture 1 IC1 RPINR7 IC1R<5:0> Input Capture 2 IC2 RPINR7 IC2R<5:0> Input Capture 3 IC3 RPINR8 IC3R<5:0> Input Capture 4 IC4 RPINR8 IC4R<5:0> Input Capture 5 IC5 RPINR9 IC5R<5:0> Input Capture 6 IC6 RPINR9 IC6R<5:0> Output Compare Fault A OCFA RPINR11 OCFAR<5:0> Output Compare Fault B OCFB RPINR11 OCFBR<5:0> Output Compare Trigger 1 OCTRIG1 RPINR0 OCTRIG1R<5:0> Output Compare Trigger 2 OCTRIG2 RPINR2 OCTRIG2R<5:0> SPI1 Clock Input SCK1IN RPINR20 SCK1R<5:0> SPI1 Data Input SDI1 RPINR20 SDI1R<5:0> SS1IN RPINR21 SS1R<5:0> SCK2IN RPINR22 SCK2R<5:0> Input Name SPI1 Slave Select Input SPI2 Clock Input SPI2 Data Input SDI2 RPINR22 SDI2R<5:0> SS2IN RPINR23 SS2R<5:0> SPI3 Clock Input SCK3IN RPINR28 SCK3R<5:0> SPI3 Data Input SDI3 RPINR28 SDI3R<5:0> SPI2 Slave Select Input SPI3 Slave Select Input SS3IN RPINR29 SS3R<5:0> Generic Timer External Clock TMRCK RPINR23 TMRCKR<5:0> UART1 Clear-to-Send U1CTS RPINR18 U1CTSR<5:0> UART1 Receive UART2 Clear-to-Send UART2 Receive UART3 Clear-to-Send UART3 Receive UART4 Clear-to-Send UART4 Receive Note 1: U1RX RPINR18 U1RXR<5:0> U2CTS RPINR19 U2CTSR<5:0> U2RX RPINR19 U2RXR<5:0> U3CTS RPINR21 U3CTSR<5:0> U3RX RPINR17 U3RXR<5:0> U4CTS RPINR27 U4CTSR<5:0> U4RX RPINR27 U4RXR<5:0> Unless otherwise noted, all inputs use the Schmitt Trigger (ST) input buffers. 2013-2015 Microchip Technology Inc. DS30005009C-page 179 PIC24FJ128GB204 FAMILY 11.4.3.2 Output Mapping corresponds to one of the peripherals and that peripheral's output is mapped to the pin (see Table 11-4). In contrast to inputs, the outputs of the Peripheral Pin Select options are mapped on the basis of the pin. In this case, a control register associated with a particular pin dictates the peripheral output to be mapped. The RPORx registers are used to control output mapping. Each register contains two 6-bit fields, with each field being associated with one RPn pin (see Register 11-23 through Register 11-35). The value of the bit field TABLE 11-4: Because of the mapping technique, the list of peripherals for output mapping also includes a null value of `000000'. This permits any given pin to remain disconnected from the output of any of the pin-selectable peripherals. SELECTABLE OUTPUT SOURCES (MAPS FUNCTION TO OUTPUT) Output Function Number(1) Function 0 NULL(2) Null 1 C1OUT Comparator 1 Output 2 C2OUT Comparator 2 Output 3 U1TX Note 1: 2: 3: (3) 4 U1RTS 5 U2TX 6 U2RTS(3) Output Name UART1 Transmit UART1 Request-to-Send UART2 Transmit UART2 Request-to-Send 7 SDO1 SPI1 Data Output 8 SCK1OUT SPI1 Clock Output 9 SS1OUT 10 SDO2 SPI1 Slave Select Output SPI2 Data Output 11 SCK2OUT 12 SS2OUT 13 OC1 Output Compare 1 14 OC2 Output Compare 2 15 OC3 Output Compare 3 16 OC4 Output Compare 4 17 OC5 Output Compare 5 18 OC6 Output Compare 6 19 U3TX UART3 Transmit 20 U3RTS 21 U4TX (3) 22 U4RTS 23 SDO3 24 SCK3OUT 25 SS3OUT SPI2 Clock Output SPI2 Slave Select Output UART3 Request-to-Send UART4 Transmit UART4 Request-to-Send SPI3 Data Output SPI3 Clock Output SPI3 Slave Select Output 26 C3OUT Comparator 3 Output 27 MDOUT DSM Modulator Output Setting the RPORx register with the listed value assigns that output function to the associated RPn pin. The NULL function is assigned to all RPn outputs at device Reset and disables the RPn output function. IrDA(R) BCLK functionality uses this output. DS30005009C-page 180 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 11.4.3.3 Mapping Limitations 11.4.4.1 The control schema of the Peripheral Pin Select is extremely flexible. Other than systematic blocks that prevent signal contention, caused by two physical pins being configured as the same functional input or two functional outputs configured as the same pin, there are no hardware enforced lockouts. The flexibility extends to the point of allowing a single input to drive multiple peripherals or a single functional output to drive multiple output pins. 11.4.3.4 Mapping Exceptions for PIC24FJ128GB204 Family Devices Although the PPS registers theoretically allow for up to 24 remappable I/O pins, not all of these are implemented in all devices. For PIC24FJ128GB204 family devices, the maximum number of remappable pins available is 24, which includes one input only pin. The differences in available remappable pins are summarized in Table 11-5. When developing applications that use remappable pins, users should also keep these things in mind: * For the RPINRx registers, bit combinations corresponding to an unimplemented pin for a particular device are treated as invalid; the corresponding module will not have an input mapped to it. * For RPORx registers, the bit fields corresponding to an unimplemented pin will also be unimplemented; writing to these fields will have no effect. 11.4.4 CONTROLLING CONFIGURATION CHANGES Because peripheral remapping can be changed during run time, some restrictions on peripheral remapping are needed to prevent accidental configuration changes. PIC24F devices include three features to prevent alterations to the peripheral map: * Control register lock sequence * Continuous state monitoring * Configuration bit remapping lock Control Register Lock Under normal operation, writes to the RPINRx and RPORx registers are not allowed. Attempted writes will appear to execute normally, but the contents of the registers will remain unchanged. To change these registers, they must be unlocked in hardware. The register lock is controlled by the IOLOCK bit (OSCCON<6>). Setting IOLOCK prevents writes to the control registers; clearing IOLOCK allows writes. To set or clear IOLOCK, a specific command sequence must be executed: 1. 2. 3. Write 46h to OSCCON<7:0>. Write 57h to OSCCON<7:0>. Clear (or set) IOLOCK as a single operation. Unlike the similar sequence with the oscillator's LOCK bit, IOLOCK remains in one state until changed. This allows all of the Peripheral Pin Selects to be configured with a single unlock sequence, followed by an update to all control registers, then locked with a second lock sequence. 11.4.4.2 Continuous State Monitoring In addition to being protected from direct writes, the contents of the RPINRx and RPORx registers are constantly monitored in hardware by shadow registers. If an unexpected change in any of the registers occurs (such as cell disturbances caused by ESD or other external events), a Configuration Mismatch Reset will be triggered. 11.4.4.3 Configuration Bit Pin Select Lock As an additional level of safety, the device can be configured to prevent more than one write session to the RPINRx and RPORx registers. The IOL1WAY (CW4<15>) Configuration bit blocks the IOLOCK bit from being cleared after it has been set once. If IOLOCK remains set, the register unlock procedure will not execute and the Peripheral Pin Select Control registers cannot be written to. The only way to clear the bit and re-enable peripheral remapping is to perform a device Reset. In the default (unprogrammed) state, IOL1WAY is set, restricting users to one write session. Programming IOL1WAY allows users unlimited access (with the proper use of the unlock sequence) to the Peripheral Pin Select registers. TABLE 11-5: REMAPPABLE PIN EXCEPTIONS FOR PIC24FJ128GB204 FAMILY DEVICES Device RPn Pins (I/O) RPIn Pins Total Unimplemented Total Unimplemented PIC24FJXXXGB202 14 RP4, RP12 1 -- PIC24FJXXXGB204 24 RP4, RP12 1 -- 2013-2015 Microchip Technology Inc. DS30005009C-page 181 PIC24FJ128GB204 FAMILY 11.4.5 CONSIDERATIONS FOR PERIPHERAL PIN SELECTION The ability to control Peripheral Pin Selection introduces several considerations into application design that could be overlooked. This is particularly true for several common peripherals that are available only as remappable peripherals. The main consideration is that the Peripheral Pin Selects are not available on default pins in the device's default (Reset) state. Since all RPINRx registers reset to `111111' and all RPORx registers reset to `000000', all Peripheral Pin Select inputs are tied to VSS and all Peripheral Pin Select outputs are disconnected. This situation requires the user to initialize the device with the proper peripheral configuration before any other application code is executed. Since the IOLOCK bit resets in the unlocked state, it is not necessary to execute the unlock sequence after the device has come out of Reset. For application safety, however, it is best to set IOLOCK and lock the configuration after writing to the control registers. Because the unlock sequence is timing-critical, it must be executed as an assembly language routine in the same manner as changes to the oscillator configuration. If the bulk of the application is written in `C', or another high-level language, the unlock sequence should be performed by writing in-line assembly. Choosing the configuration requires the review of all Peripheral Pin Selects and their pin assignments, especially those that will not be used in the application. In all cases, unused pin-selectable peripherals should be disabled completely. Unused peripherals should have their inputs assigned to an unused RPn/RPIn pin function. I/O pins with unused RPn functions should be configured with the null peripheral output. The assignment of a peripheral to a particular pin does not automatically perform any other configuration of the pin's I/O circuitry. In theory, this means adding a pin-selectable output to a pin may mean inadvertently driving an existing peripheral input when the output is driven. Users must be familiar with the behavior of other fixed peripherals that share a remappable pin and know when to enable or disable them. To be safe, fixed digital peripherals that share the same pin should be disabled when not in use. Along these lines, configuring a remappable pin for a specific peripheral does not automatically turn that feature on. The peripheral must be specifically configured for operation and enabled as if it were tied to a fixed pin. Where this happens in the application code (immediately following a device Reset and peripheral configuration or inside the main application routine) depends on the peripheral and its use in the application. A final consideration is that Peripheral Pin Select functions neither override analog inputs nor reconfigure pins with analog functions for digital I/O. If a pin is configured as an analog input on device Reset, it must be explicitly reconfigured as a digital I/O when used with a Peripheral Pin Select. Example 11-3 shows a configuration for bidirectional communication with flow control using UART1. The following input and output functions are used: * Input Functions: U1RX, U1CTS * Output Functions: U1TX, U1RTS EXAMPLE 11-3: CONFIGURING UART1 INPUT AND OUTPUT FUNCTIONS // Unlock Registers asm volatile ("MOV "MOV "MOV "MOV.b "MOV.b "BCLR #OSCCON, w1 #0x46, w2 #0x57, w3 w2, [w1] w3, [w1] OSCCON, #6") \n" \n" \n" \n" \n" ; // or use C30 built-in macro: __builtin_write_OSCCONL(OSCCON & 0xbf); // // Configure Input Functions (Table 11-3) // Assign U1RX To Pin RP0 RPINR18bits.U1RXR = 0; // Assign U1CTS To Pin RP1 RPINR18bits.U1CTSR = 1; // Configure Output Functions (Table 11-4) // Assign U1TX To Pin RP2 RPOR1bits.RP2R = 3; // Assign U1RTS To Pin RP3 RPOR1bits.RP3R = 4; // Lock Registers asm volatile ("MOV "MOV "MOV "MOV.b "MOV.b "BSET #OSCCON, w1 #0x46, w2 #0x57, w3 w2, [w1] w3, [w1] OSCCON, #6") \n" \n" \n" \n" \n" ; // or use C30 built-in macro: // __builtin_write_OSCCONL(OSCCON | 0x40); DS30005009C-page 182 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 11.4.6 PERIPHERAL PIN SELECT REGISTERS Note: The PIC24FJ128GB204 family of devices implements a total of 32 registers for remappable peripheral configuration: Input and Output register values can only be changed if IOLOCK (OSCCON<6>) = 0. See Section 11.4.4.1 "Control Register Lock" for a specific command sequence. * Input Remappable Peripheral Registers (19) * Output Remappable Peripheral Registers (13) REGISTER 11-4: RPINR0: PERIPHERAL PIN SELECT INPUT REGISTER 0 U-0 U-0 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 -- -- INT1R5 INT1R4 INT1R3 INT1R2 INT1R1 INT1R0 bit 15 bit 8 U-0 U-0 -- -- R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 OCTRIG1R5 OCTRIG1R4 OCTRIG1R3 OCTRIG1R2 OCTRIG1R1 OCTRIG1R0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-14 Unimplemented: Read as `0' bit 13-8 INT1R<5:0>: Assign External Interrupt 1 (INT1) to Corresponding RPn or RPIn Pin bits bit 7-6 Unimplemented: Read as `0' bit 5-0 OCTRIG1R<5:0>: Assign Output Compare Trigger 1 to Corresponding RPn or RPIn Pin bits REGISTER 11-5: RPINR1: PERIPHERAL PIN SELECT INPUT REGISTER 1 U-0 U-0 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 -- -- INT3R5 INT3R4 INT3R3 INT3R2 INT3R1 INT3R0 bit 15 bit 8 U-0 U-0 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 -- -- INT2R5 INT2R4 INT2R3 INT2R2 INT2R1 INT2R0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-14 Unimplemented: Read as `0' bit 13-8 INT3R<5:0>: Assign External Interrupt 3 (INT3) to Corresponding RPn or RPIn Pin bits bit 7-6 Unimplemented: Read as `0' bit 5-0 INT2R<5:0>: Assign External Interrupt 2 (INT2) to Corresponding RPn or RPIn Pin bits 2013-2015 Microchip Technology Inc. DS30005009C-page 183 PIC24FJ128GB204 FAMILY REGISTER 11-6: RPINR2: PERIPHERAL PIN SELECT INPUT REGISTER 2 U-0 U-0 -- -- R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 OCTRIG2R5 OCTRIG2R4 OCTRIG2R3 OCTRIG2R2 OCTRIG2R1 OCTRIG2R0 bit 15 bit 8 U-0 U-0 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 -- -- INT4R5 INT4R4 INT4R3 INT4R2 INT4R1 INT4R0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-14 Unimplemented: Read as `0' bit 13-8 OCTRIG2R<5:0>: Assign Output Compare Trigger 2 to Corresponding RPn or RPIn Pin bits bit 7-6 Unimplemented: Read as `0' bit 5-0 INT4R<5:0>: Assign External Interrupt 4 (INT4) to Corresponding RPn or RPIn Pin bits REGISTER 11-7: RPINR7: PERIPHERAL PIN SELECT INPUT REGISTER 7 U-0 U-0 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 -- -- IC2R5 IC2R4 IC2R3 IC2R2 IC2R1 IC2R0 bit 15 bit 8 U-0 U-0 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 -- -- IC1R5 IC1R4 IC1R3 IC1R2 IC1R1 IC1R0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-14 Unimplemented: Read as `0' bit 13-8 IC2R<5:0>: Assign Input Capture 2 (IC2) to Corresponding RPn or RPIn Pin bits bit 7-6 Unimplemented: Read as `0' bit 5-0 IC1R<5:0>: Assign Input Capture 1 (IC1) to Corresponding RPn or RPIn Pin bits DS30005009C-page 184 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 11-8: RPINR8: PERIPHERAL PIN SELECT INPUT REGISTER 8 U-0 U-0 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 -- -- IC4R5 IC4R4 IC4R3 IC4R2 IC4R1 IC4R0 bit 15 bit 8 U-0 U-0 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 -- -- IC3R5 IC3R4 IC3R3 IC3R2 IC3R1 IC3R0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-14 Unimplemented: Read as `0' bit 13-8 IC4R<5:0>: Assign Input Capture 4 (IC4) to Corresponding RPn or RPIn Pin bits bit 7-6 Unimplemented: Read as `0' bit 5-0 IC3R<5:0>: Assign Input Capture 3 (IC3) to Corresponding RPn or RPIn Pin bits REGISTER 11-9: RPINR9: PERIPHERAL PIN SELECT INPUT REGISTER 9 U-0 U-0 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 -- -- IC6R5 IC6R4 IC6R3 IC6R2 IC6R1 IC6R0 bit 15 bit 8 U-0 U-0 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 -- -- IC5R5 IC5R4 IC5R3 IC5R2 IC5R1 IC5R0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-14 Unimplemented: Read as `0' bit 13-8 IC6R<5:0>: Assign Input Capture 6 (IC6) to Corresponding RPn or RPIn Pin bits bit 7-6 Unimplemented: Read as `0' bit 5-0 IC5R<5:0>: Assign Input Capture 5 (IC5) to Corresponding RPn or RPIn Pin bits 2013-2015 Microchip Technology Inc. DS30005009C-page 185 PIC24FJ128GB204 FAMILY REGISTER 11-10: RPINR11: PERIPHERAL PIN SELECT INPUT REGISTER 11 U-0 U-0 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 -- -- OCFBR5 OCFBR4 OCFBR3 OCFBR2 OCFBR1 OCFBR0 bit 15 bit 8 U-0 U-0 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 -- -- OCFAR5 OCFAR4 OCFAR3 OCFAR2 OCFAR1 OCFAR0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-14 x = Bit is unknown Unimplemented: Read as `0' bit 13-8 OCFBR<5:0>: Assign Output Compare Fault B (OCFB) to Corresponding RPn or RPIn Pin bits bit 7-6 Unimplemented: Read as `0' bit 5-0 OCFAR<5:0>: Assign Output Compare Fault A (OCFA) to Corresponding RPn or RPIn Pin bits REGISTER 11-11: RPINR17: PERIPHERAL PIN SELECT INPUT REGISTER 17 U-0 U-0 -- -- R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 U3RXR<5:0> bit 15 bit 8 U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-14 x = Bit is unknown Unimplemented: Read as `0' bit 13-8 U3RXR<5:0>: Assign UART3 Receive (U3RX) to Corresponding RPn or RPIn Pin bits bit 7-0 Unimplemented: Read as `0' DS30005009C-page 186 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 11-12: RPINR18: PERIPHERAL PIN SELECT INPUT REGISTER 18 U-0 U-0 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 -- -- U1CTSR5 U1CTSR4 U1CTSR3 U1CTSR2 U1CTSR1 U1CTSR0 bit 15 bit 8 U-0 U-0 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 -- -- U1RXR5 U1RXR4 U1RXR3 U1RXR2 U1RXR1 U1RXR0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-14 x = Bit is unknown Unimplemented: Read as `0' bit 13-8 U1CTSR<5:0>: Assign UART1 Clear-to-Send (U1CTS) to Corresponding RPn or RPIn Pin bits bit 7-6 Unimplemented: Read as `0' bit 5-0 U1RXR<5:0>: Assign UART1 Receive (U1RX) to Corresponding RPn or RPIn Pin bits REGISTER 11-13: RPINR19: PERIPHERAL PIN SELECT INPUT REGISTER 19 U-0 U-0 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 -- -- U2CTSR5 U2CTSR4 U2CTSR3 U2CTSR2 U2CTSR1 U2CTSR0 bit 15 bit 8 U-0 U-0 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 -- -- U2RXR5 U2RXR4 U2RXR3 U2RXR2 U2RXR1 U2RXR0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-14 Unimplemented: Read as `0' bit 13-8 U2CTSR<5:0>: Assign UART2 Clear-to-Send (U2CTS) to Corresponding RPn or RPIn Pin bits bit 7-6 Unimplemented: Read as `0' bit 5-0 U2RXR<5:0>: Assign UART2 Receive (U2RX) to Corresponding RPn or RPIn Pin bits 2013-2015 Microchip Technology Inc. DS30005009C-page 187 PIC24FJ128GB204 FAMILY REGISTER 11-14: RPINR20: PERIPHERAL PIN SELECT INPUT REGISTER 20 U-0 U-0 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 -- -- SCK1R5 SCK1R4 SCK1R3 SCK1R2 SCK1R1 SCK1R0 bit 15 bit 8 U-0 U-0 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 -- -- SDI1R5 SDI1R4 SDI1R3 SDI1R2 SDI1R1 SDI1R0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-14 Unimplemented: Read as `0' bit 13-8 SCK1R<5:0>: Assign SPI1 Clock Input (SCK1IN) to Corresponding RPn or RPIn Pin bits bit 7-6 Unimplemented: Read as `0' bit 5-0 SDI1R<5:0>: Assign SPI1 Data Input (SDI1) to Corresponding RPn or RPIn Pin bits REGISTER 11-15: RPINR21: PERIPHERAL PIN SELECT INPUT REGISTER 21 U-0 U-0 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 -- -- U3CTSR5 U3CTSR4 U3CTSR3 U3CTSR2 U3CTSR1 U3CTSR0 bit 15 bit 8 U-0 U-0 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 -- -- SS1R5 SS1R4 SS1R3 SS1R2 SS1R1 SS1R0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-14 Unimplemented: Read as `0' bit 13-8 U3CTSR<5:0>: Assign UART3 Clear-to-Send (U3CTS) to Corresponding RPn or RPIn Pin bits bit 7-6 Unimplemented: Read as `0' bit 5-0 SS1R<5:0>: Assign SPI1 Slave Select Input (SS1IN) to Corresponding RPn or RPIn Pin bits DS30005009C-page 188 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 11-16: RPINR22: PERIPHERAL PIN SELECT INPUT REGISTER 22 U-0 U-0 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 -- -- SCK2R5 SCK2R4 SCK2R3 SCK2R2 SCK2R1 SCK2R0 bit 15 bit 8 U-0 U-0 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 -- -- SDI2R5 SDI2R4 SDI2R3 SDI2R2 SDI2R1 SDI2R0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-14 x = Bit is unknown Unimplemented: Read as `0' bit 13-8 SCK2R<5:0>: Assign SPI2 Clock Input (SCK2IN) to Corresponding RPn or RPIn Pin bits bit 7-6 Unimplemented: Read as `0' bit 5-0 SDI2R<5:0>: Assign SPI2 Data Input (SDI2) to Corresponding RPn or RPIn Pin bits REGISTER 11-17: RPINR23: PERIPHERAL PIN SELECT INPUT REGISTER 23 U-0 U-0 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 -- -- TMRCKR5 TMRCKR4 TMRCKR3 TMRCKR2 TMRCKR1 TMRCKR0 bit 15 bit 8 U-0 U-0 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 -- -- SS2R5 SS2R4 SS2R3 SS2R2 SS2R1 SS2R0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-14 Unimplemented: Read as `0' bit 13-8 TMRCKR<5:0>: Assign General Timer External Input (TMRCK) to Corresponding RPn or RPIn Pin bits bit 7-6 Unimplemented: Read as `0' bit 5-0 SS2R<5:0>: Assign SPI2 Slave Select Input (SS2IN) to Corresponding RPn or RPIn Pin bits 2013-2015 Microchip Technology Inc. DS30005009C-page 189 PIC24FJ128GB204 FAMILY REGISTER 11-18: RPINR27: PERIPHERAL PIN SELECT INPUT REGISTER 27 U-0 U-0 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 -- -- U4CTSR5 U4CTSR4 U4CTSR3 U4CTSR2 U4CTSR1 U4CTSR0 bit 15 bit 8 U-0 U-0 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 -- -- U4RXR5 U4RXR4 U4RXR3 U4RXR2 U4RXR1 U4RXR0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-14 Unimplemented: Read as `0' bit 13-8 U4CTSR<5:0>: Assign UART4 Clear-to-Send Input (U4CTS) to Corresponding RPn or RPIn Pin bits bit 7-6 Unimplemented: Read as `0' bit 5-0 U4RXR<5:0>: Assign UART4 Receive Input (U4RX) to Corresponding RPn or RPIn Pin bits REGISTER 11-19: RPINR28: PERIPHERAL PIN SELECT INPUT REGISTER 28 U-0 U-0 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 -- -- SCK3R5 SCK3R4 SCK3R3 SCK3R2 SCK3R1 SCK3R0 bit 15 bit 8 U-0 U-0 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 -- -- SDI3R5 SDI3R4 SDI3R3 SDI3R2 SDI3R1 SDI3R0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-14 x = Bit is unknown Unimplemented: Read as `0' bit 13-8 SCK3R<5:0>: Assign SPI3 Clock Input (SCK3IN) to Corresponding RPn or RPIn Pin bits bit 7-6 Unimplemented: Read as `0' bit 5-0 SDI3R<5:0>: Assign SPI3 Data Input (SDI3) to Corresponding RPn or RPIn Pin bits DS30005009C-page 190 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 11-20: RPINR29: PERIPHERAL PIN SELECT INPUT REGISTER 29 U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 15 bit 8 U-0 U-0 -- -- R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 SS3R<5:0> bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-6 Unimplemented: Read as `0' bit 5-0 SS3R<5:0>: Assign SPI3 Slave Select Input (SS3IN) to Corresponding RPn or RPIn Pin bits REGISTER 11-21: RPINR30: PERIPHERAL PIN SELECT INPUT REGISTER 30 U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 15 bit 8 U-0 U-0 -- -- R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 MDMIR<5:0> bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-6 Unimplemented: Read as `0' bit 5-0 MDMIR<5:0>: Assign TX Modulation Input (MDMI) to Corresponding RPn or RPIn Pin bits 2013-2015 Microchip Technology Inc. DS30005009C-page 191 PIC24FJ128GB204 FAMILY REGISTER 11-22: RPINR31: PERIPHERAL PIN SELECT INPUT REGISTER 31 U-0 U-0 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 -- -- MDC2R5 MDC2R4 MDC2R3 MDC2R2 MDC2R1 MDC2R0 bit 15 bit 8 U-0 U-0 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 -- -- MDC1R5 MDC1R4 MDC1R3 MDC1R2 MDC21R1 MDC1R0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-14 x = Bit is unknown Unimplemented: Read as `0' bit 13-8 MDC2R<5:0>: Assign TX Carrier 2 Input (MDCIN2) to Corresponding RPn or RPIn Pin bits bit 7-6 Unimplemented: Read as `0' bit 5-0 MDC1R<5:0>: Assign TX Carrier 1 Input (MDCIN1) to Corresponding RPn or RPIn Pin bits DS30005009C-page 192 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 11-23: RPOR0: PERIPHERAL PIN SELECT OUTPUT REGISTER 0 U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 -- -- RP1R5 RP1R4 RP1R3 RP1R2 RP1R1 RP1R0 bit 15 bit 8 U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 -- -- RP0R5 RP0R4 RP0R3 RP0R2 RP0R1 RP0R0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-14 Unimplemented: Read as `0' bit 13-8 RP1R<5:0>: RP1 Output Pin Mapping bits Peripheral Output Number n is assigned to pin, RP1 (see Table 11-4 for peripheral function numbers). bit 7-6 Unimplemented: Read as `0' bit 5-0 RP0R<5:0>: RP0 Output Pin Mapping bits Peripheral Output Number n is assigned to pin, RP0 (see Table 11-4 for peripheral function numbers). REGISTER 11-24: RPOR1: PERIPHERAL PIN SELECT OUTPUT REGISTER 1 U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 -- -- RP3R5 RP3R4 RP3R3 RP3R2 RP3R1 RP3R0 bit 15 bit 8 U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 -- -- RP2R5 RP2R4 RP2R3 RP2R2 RP2R1 RP2R0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-14 Unimplemented: Read as `0' bit 13-8 RP3R<5:0>: RP3 Output Pin Mapping bits Peripheral Output Number n is assigned to pin, RP3 (see Table 11-4 for peripheral function numbers). bit 7-6 Unimplemented: Read as `0' bit 5-0 RP2R<5:0>: RP2 Output Pin Mapping bits Peripheral Output Number n is assigned to pin, RP2 (see Table 11-4 for peripheral function numbers). 2013-2015 Microchip Technology Inc. DS30005009C-page 193 PIC24FJ128GB204 FAMILY REGISTER 11-25: RPOR2: PERIPHERAL PIN SELECT OUTPUT REGISTER 2 U-0 U-0 -- -- R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 RP5R<5:0> bit 15 bit 8 U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-14 Unimplemented: Read as `0' bit 13-8 RP5R<5:0>: RP5 Output Pin Mapping bits Peripheral Output Number n is assigned to pin, RP5 (see Table 11-4 for peripheral function numbers). bit 7-0 Unimplemented: Read as `0' REGISTER 11-26: RPOR3: PERIPHERAL PIN SELECT OUTPUT REGISTER 3 U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 -- -- RP7R5 RP7R4 RP7R3 RP7R2 RP7R1 RP7R0 bit 15 bit 8 U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 -- -- RP6R5 RP6R4 RP6R3 RP6R2 RP6R1 RP6R0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-14 Unimplemented: Read as `0' bit 13-8 RP7R<5:0>: RP7 Output Pin Mapping bits Peripheral Output Number n is assigned to pin, RP7 (see Table 11-4 for peripheral function numbers). bit 7-6 Unimplemented: Read as `0' bit 5-0 RP6R<5:0>: RP6 Output Pin Mapping bits Peripheral Output Number n is assigned to pin, RP6 (see Table 11-4 for peripheral function numbers). DS30005009C-page 194 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 11-27: RPOR4: PERIPHERAL PIN SELECT OUTPUT REGISTER 4 U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 -- -- RP9R5 RP9R4 RP9R3 RP9R2 RP9R1 RP9R0 bit 15 bit 8 U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 -- -- RP8R5 RP8R4 RP8R3 RP8R2 RP8R1 RP8R0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-14 Unimplemented: Read as `0' bit 13-8 RP9R<5:0>: RP9 Output Pin Mapping bits Peripheral Output Number n is assigned to pin, RP9 (see Table 11-4 for peripheral function numbers). bit 7-6 Unimplemented: Read as `0' bit 5-0 RP8R<5:0>: RP8 Output Pin Mapping bits Peripheral Output Number n is assigned to pin, RP8 (see Table 11-4 for peripheral function numbers). REGISTER 11-28: RPOR5: PERIPHERAL PIN SELECT OUTPUT REGISTER 5 U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 -- -- RP11R5 RP11R4 RP11R3 RP11R2 RP11R1 RP11R0 bit 15 bit 8 U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 -- -- RP10R5 RP10R4 RP10R3 RP10R2 RP10R1 RP10R0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-14 Unimplemented: Read as `0' bit 13-8 RP11R<5:0>: RP11 Output Pin Mapping bits Peripheral Output Number n is assigned to pin, RP11 (see Table 11-4 for peripheral function numbers). bit 7-6 Unimplemented: Read as `0' bit 5-0 RP10R<5:0>: RP10 Output Pin Mapping bits Peripheral Output Number n is assigned to pin, RP10 (see Table 11-4 for peripheral function numbers). 2013-2015 Microchip Technology Inc. DS30005009C-page 195 PIC24FJ128GB204 FAMILY REGISTER 11-29: RPOR6: PERIPHERAL PIN SELECT OUTPUT REGISTER 6 U-0 U-0 -- -- R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 RP13R<5:0> bit 15 bit 8 U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-14 Unimplemented: Read as `0' bit 13-8 RP13R<5:0>: RP13 Output Pin Mapping bits Peripheral Output Number n is assigned to pin, RP13 (see Table 11-4 for peripheral function numbers). bit 7-0 Unimplemented: Read as `0' REGISTER 11-30: RPOR7: PERIPHERAL PIN SELECT OUTPUT REGISTER 7 U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 -- -- RP15R5 RP15R4 RP15R3 RP15R2 RP15R1 RP15R0 bit 15 bit 8 U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 -- -- RP14R5 RP14R4 RP14R3 RP14R2 RP14R1 RP14R0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-14 Unimplemented: Read as `0' bit 13-8 RP15R<5:0>: RP15 Output Pin Mapping bits Peripheral Output Number n is assigned to pin, RP15 (see Table 11-4 for peripheral function numbers). bit 7-6 Unimplemented: Read as `0' bit 5-0 RP14R<5:0>: RP14 Output Pin Mapping bits Peripheral Output Number n is assigned to pin, RP14 (see Table 11-4 for peripheral function numbers). DS30005009C-page 196 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 11-31: RPOR8: PERIPHERAL PIN SELECT OUTPUT REGISTER 8(1) U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 -- -- RP17R5 RP17R4 RP17R3 RP17R2 RP17R1 RP17R0 bit 15 bit 8 U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 -- -- RP16R5 RP16R4 RP16R3 RP16R2 RP16R1 RP16R0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-14 Unimplemented: Read as `0' bit 13-8 RP17R<5:0>: RP17 Output Pin Mapping bits Peripheral Output Number n is assigned to pin, RP17 (see Table 11-4 for peripheral function numbers). bit 7-6 Unimplemented: Read as `0' bit 5-0 RP16R<5:0>: RP16 Output Pin Mapping bits Peripheral Output Number n is assigned to pin, RP16 (see Table 11-4 for peripheral function numbers). Note 1: These pins are not available in 28-pin devices. REGISTER 11-32: RPOR9: PERIPHERAL PIN SELECT OUTPUT REGISTER 9(1) U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 -- -- RP19R5 RP19R4 RP19R3 RP19R2 RP19R1 RP19R0 bit 15 bit 8 U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 -- -- RP18R5 RP18R4 RP18R3 RP18R2 RP18R1 RP18R0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-14 Unimplemented: Read as `0' bit 13-8 RP19R<5:0>: RP19 Output Pin Mapping bits Peripheral Output Number n is assigned to pin, RP19 (see Table 11-4 for peripheral function numbers). bit 7-6 Unimplemented: Read as `0' bit 5-0 RP18R<5:0>: RP18 Output Pin Mapping bits Peripheral Output Number n is assigned to pin, RP18 (see Table 11-4 for peripheral function numbers). Note 1: These pins are not available in 28-pin devices. 2013-2015 Microchip Technology Inc. DS30005009C-page 197 PIC24FJ128GB204 FAMILY REGISTER 11-33: RPOR10: PERIPHERAL PIN SELECT OUTPUT REGISTER 10(1) U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 -- -- RP21R5 RP21R4 RP21R3 RP21R2 RP21R1 RP21R0 bit 15 bit 8 U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 -- -- RP20R5 RP20R4 RP20R3 RP20R2 RP20R1 RP20R0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-14 Unimplemented: Read as `0' bit 13-8 RP21R<5:0>: RP21 Output Pin Mapping bits Peripheral Output Number n is assigned to pin, RP21 (see Table 11-4 for peripheral function numbers). bit 7-6 Unimplemented: Read as `0' bit 5-0 RP20R<5:0>: RP20 Output Pin Mapping bits Peripheral Output Number n is assigned to pin, RP20 (see Table 11-4 for peripheral function numbers). Note 1: These pins are not available in 28-pin devices. REGISTER 11-34: RPOR11: PERIPHERAL PIN SELECT OUTPUT REGISTER 11(1) U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 -- -- RP23R5 RP23R4 RP23R3 RP23R2 RP23R1 RP23R0 bit 15 bit 8 U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 -- -- RP22R5 RP22R4 RP22R3 RP22R2 RP22R1 RP22R0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-14 Unimplemented: Read as `0' bit 13-8 RP23R<5:0>: RP23 Output Pin Mapping bits Peripheral Output Number n is assigned to pin, RP23 (see Table 11-4 for peripheral function numbers). bit 7-6 Unimplemented: Read as `0' bit 5-0 RP22R<5:0>: RP22 Output Pin Mapping bits Peripheral Output Number n is assigned to pin, RP22 (see Table 11-4 for peripheral function numbers). Note 1: These pins are not available in 28-pin devices. DS30005009C-page 198 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 11-35: RPOR12: PERIPHERAL PIN SELECT OUTPUT REGISTER 12(1) U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 -- -- RP25R5 RP25R4 RP25R3 RP25R2 RP25R1 RP25R0 bit 15 bit 8 U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 -- -- RP24R5 RP24R4 RP24R3 RP24R2 RP24R1 RP24R0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-14 Unimplemented: Read as `0' bit 13-8 RP25R<5:0>: RP25 Output Pin Mapping bits Peripheral Output Number n is assigned to pin, RP25 (see Table 11-4 for peripheral function numbers). bit 7-6 Unimplemented: Read as `0' bit 5-0 RP24R<5:0>: RP24 Output Pin Mapping bits Peripheral Output Number n is assigned to pin, RP24 (see Table 11-4 for peripheral function numbers). Note 1: These pins are not available in 28-pin devices. 2013-2015 Microchip Technology Inc. DS30005009C-page 199 PIC24FJ128GB204 FAMILY NOTES: DS30005009C-page 200 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 12.0 TIMER1 Note: Figure 12-1 shows a block diagram of the 16-bit timer module. This data sheet summarizes the features of this group of PIC24F devices. It is not intended to be a comprehensive reference source. For more information, refer to the "dsPIC33/PIC24 Family Reference Manual", "Timers" (DS39704). The information in this data sheet supersedes the information in the FRM. The Timer1 module is a 16-bit timer, which can serve as the time counter for the Real-Time Clock (RTC) or operate as a free-running, interval timer/counter. Timer1 can operate in three modes: * 16-Bit Timer * 16-Bit Synchronous Counter * 16-Bit Asynchronous Counter To configure Timer1 for operation: 1. 2. 3. 4. 5. 6. Set the TON bit (= 1). Select the timer prescaler ratio using the TCKPS<1:0> bits. Set the Clock and Gating modes using the TCS, TECS<1:0> and TGATE bits. Set or clear the TSYNC bit to configure synchronous or asynchronous operation. Load the timer period value into the PR1 register. If interrupts are required, set the Timer1 Interrupt Enable bit, T1IE. Use the Timer1 Interrupt Priority bits, T1IP<2:0>, to set the interrupt priority. Timer1 also supports these features: * * * * Timer Gate Operation Selectable Prescaler Settings Timer Operation during CPU Idle and Sleep modes Interrupt on 16-Bit Period Register Match or Falling Edge of External Gate Signal FIGURE 12-1: 16-BIT TIMER1 MODULE BLOCK DIAGRAM TGATE LPRC Clock Input Select SOSCO D Q 1 CK Q 0 TMR1 SOSCI Comparator SOSCSEL SOSCEN Set T1IF Reset Equal PR1 Clock Input Select Detail SOSC Input T1CK Input TON Gate Output TCKPS<1:0> 2 TMRCK Input Gate Sync LPRC Input 2 0 Sync TCY TECS<1:0> TGATE TCS 2013-2015 Microchip Technology Inc. Prescaler 1, 8, 64, 256 1 Clock Output to TMR1 TSYNC DS30005009C-page 201 PIC24FJ128GB204 FAMILY T1CON: TIMER1 CONTROL REGISTER(1) REGISTER 12-1: R/W-0 U-0 R/W-0 U-0 U-0 U-0 R/W-0 R/W-0 TON -- TSIDL -- -- -- TECS1 TECS0 bit 15 bit 8 U-0 R/W-0 R/W-0 R/W-0 U-0 R/W-0 R/W-0 U-0 -- TGATE TCKPS1 TCKPS0 -- TSYNC TCS -- bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15 TON: Timer1 On bit 1 = Starts 16-bit Timer1 0 = Stops 16-bit Timer1 bit 14 Unimplemented: Read as `0' bit 13 TSIDL: Timer1 Stop in Idle Mode bit 1 = Discontinues module operation when device enters Idle mode 0 = Continues module operation in Idle mode bit 12-10 Unimplemented: Read as `0' bit 9-8 TECS<1:0>: Timer1 Extended Clock Source Select bits (selected when TCS = 1) When TCS = 1: 11 = Generic Timer (TMRCK) external input 10 = LPRC Oscillator 01 = T1CK external clock input 00 = SOSC When TCS = 0: These bits are ignored; Timer1 is clocked from the internal system clock (FOSC/2). bit 7 Unimplemented: Read as `0' bit 6 TGATE: Timer1 Gated Time Accumulation Enable bit When TCS = 1: This bit is ignored. When TCS = 0: 1 = Gated time accumulation is enabled 0 = Gated time accumulation is disabled bit 5-4 TCKPS<1:0>: Timer1 Input Clock Prescale Select bits 11 = 1:256 10 = 1:64 01 = 1:8 00 = 1:1 bit 3 Unimplemented: Read as `0' Note 1: Changing the value of T1CON while the timer is running (TON = 1) causes the timer prescale counter to reset and is not recommended. DS30005009C-page 202 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 12-1: T1CON: TIMER1 CONTROL REGISTER(1) (CONTINUED) bit 2 TSYNC: Timer1 External Clock Input Synchronization Select bit When TCS = 1: 1 = Synchronizes external clock input 0 = Does not synchronize external clock input When TCS = 0: This bit is ignored. bit 1 TCS: Timer1 Clock Source Select bit 1 = Extended clock selected by the TECS<1:0> bits 0 = Internal clock (FOSC/2) bit 0 Unimplemented: Read as `0' Note 1: Changing the value of T1CON while the timer is running (TON = 1) causes the timer prescale counter to reset and is not recommended. 2013-2015 Microchip Technology Inc. DS30005009C-page 203 PIC24FJ128GB204 FAMILY NOTES: DS30005009C-page 204 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 13.0 Note: TIMER2/3 AND TIMER4/5 This data sheet summarizes the features of this group of PIC24F devices. It is not intended to be a comprehensive reference source. For more information, refer to the "dsPIC33/PIC24 Family Reference Manual", "Timers" (DS39704). The information in this data sheet supersedes the information in the FRM. The Timer2/3 and Timer4/5 modules are 32-bit timers, which can also be configured as four independent, 16-bit timers with selectable operating modes. To configure Timer2/3 or Timer4/5 for 32-bit operation: 1. 2. 3. 4. As 32-bit timers, Timer2/3 and Timer4/5 can each operate in three modes: Set the T32 or T45 bit (T2CON<3> or T4CON<3> = 1). Select the prescaler ratio for Timer2 or Timer4 using the TCKPS<1:0> bits. Set the Clock and Gating modes using the TCS and TGATE bits. If TCS is set to an external clock, RPINRx (TxCK) must be configured to an available RPn/RPIn pin. For more information, see Section 11.4 "Peripheral Pin Select (PPS)". Load the timer period value. PR3 (or PR5) will contain the most significant word (msw) of the value, while PR2 (or PR4) contains the least significant word (lsw). If interrupts are required, set the Timer3/5 Interrupt Enable bit, T3IE or T5IE. Use the Timer3/5 Interrupt Priority bits, T3IP<2:0> or T5IP<2:0>, to set the interrupt priority. Note that while Timer2 or Timer4 controls the timer, the interrupt appears as a Timer3 or Timer5 interrupt. Set the TON bit (= 1). * Two Independent 16-Bit Timers with all 16-Bit Operating modes (except Asynchronous Counter mode) * Single 32-Bit Timer * Single 32-Bit Synchronous Counter 5. They also support these features: 6. * * * * * The timer value, at any point, is stored in the register pair, TMR<3:2> (or TMR<5:4>). TMR3 (TMR5) always contains the most significant word of the count, while TMR2 (TMR4) contains the least significant word. Timer Gate Operation Selectable Prescaler Settings Timer Operation during Idle and Sleep modes Interrupt on a 32-Bit Period Register Match A/D Event Trigger (only on Timer2/3 in 32-bit mode and Timer3 in 16-bit mode) Individually, all four of the 16-bit timers can function as synchronous timers or counters. They also offer the features listed above, except for the A/D Event Trigger. This trigger is implemented only on Timer2/3 in 32-bit mode and Timer3 in 16-bit mode. The operating modes and enabled features are determined by setting the appropriate bit(s) in the T2CON, T3CON, T4CON and T5CON registers. T2CON and T4CON are shown in generic form in Register 13-1; T3CON and T5CON are shown in Register 13-2. For 32-bit timer/counter operation, Timer2 and Timer4 are the least significant word; Timer3 and Timer5 are the most significant word of the 32-bit timers. Note: For 32-bit operation, T3CON and T5CON control bits are ignored. Only T2CON and T4CON control bits are used for setup and control. Timer2 and Timer4 clock and gate inputs are utilized for the 32-bit timer modules, but an interrupt is generated with the Timer3 or Timer5 interrupt flags. 2013-2015 Microchip Technology Inc. To configure any of the timers for individual 16-bit operation: 1. 2. 3. 4. 5. 6. Clear the T32 bit corresponding to that timer (T2CON<3> for Timer2 and Timer3 or T4CON<3> for Timer4 and Timer5). Select the timer prescaler ratio using the TCKPS<1:0> bits. Set the Clock and Gating modes using the TCS and TGATE bits. See Section 11.4 "Peripheral Pin Select (PPS)" for more information. Load the timer period value into the PRx register. If interrupts are required, set the Timerx Interrupt Enable bit, TxIE. Use the Timerx Interrupt Priority bits, TxIP<2:0>, to set the interrupt priority. Set the TON (TxCON<15> = 1) bit. DS30005009C-page 205 PIC24FJ128GB204 FAMILY FIGURE 13-1: TIMER2/3 AND TIMER4/5 (32-BIT) BLOCK DIAGRAM T2CK (T4CK) TCY TCKPS<1:0> TMRCK 2 SOSC Input LPRC Input Prescaler 1, 8, 64, 256 Gate Sync TECS<1:0> TGATE(2) TCS(2) TGATE 1 Q 0 Q D Set T3IF (T5IF) PR3 (PR5) Equal A/D Event Trigger CK PR2 (PR4) Comparator (3) MSB LSB TMR3 (TMR5) Reset TMR2 (TMR4) Sync 16 (1) Read TMR2 (TMR4) Write TMR2 (TMR4)(1) 16 TMR3HLD (TMR5HLD) 16 Data Bus<15:0> Note 1: 2: 3: The 32-Bit Timer Configuration bit, T32, must be set for 32-bit timer/counter operation. All control bits are respective to the T2CON and T4CON registers. The timer clock input must be assigned to an available RPn/RPIn pin before use. See Section 11.4 "Peripheral Pin Select (PPS)" for more information. The A/D Event Trigger is available only on Timer2/3 in 32-bit mode and Timer3 in 16-bit mode. DS30005009C-page 206 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY FIGURE 13-2: TIMER2 AND TIMER4 (16-BIT SYNCHRONOUS) BLOCK DIAGRAM T2CK (T4CK) TCY TCKPS<1:0> TMRCK TON 2 SOSC Input LPRC Input Prescaler 1, 8, 64, 256 Gate Sync TECS<1:0> TGATE(1) TCS(1) TGATE 1 Q D 0 Q CK Set T2IF (T4IF) Reset Equal TMR2 (TMR4) Sync Comparator PR2 (PR4) Note 1: The timer clock input must be assigned to an available RPn/RPIn pin before use. See Section 11.4 "Peripheral Pin Select (PPS)" for more information. FIGURE 13-3: TIMER3 AND TIMER5 (16-BIT ASYNCHRONOUS) BLOCK DIAGRAM T3CK (T5CK) TCY TMRCK TON TCKPS<1:0> 2 SOSC Input LPRC Input Prescaler 1, 8, 64, 256 Gate Sync TGATE TECS<1:0> 1 Set T3IF (T5IF) 0 Reset A/D Event Trigger(2) Equal TGATE(1) TCS(1) Q D Q CK TMR3 (TMR5) Comparator PR3 (PR5) Note 1: 2: The timer clock input must be assigned to an available RPn/RPIn pin before use. See Section 11.4 "Peripheral Pin Select (PPS)" for more information. The A/D Event Trigger is available only on Timer3. 2013-2015 Microchip Technology Inc. DS30005009C-page 207 PIC24FJ128GB204 FAMILY TxCON: TIMER2 AND TIMER4 CONTROL REGISTER(1) REGISTER 13-1: R/W-0 U-0 -- TON R/W-0 TSIDL U-0 -- U-0 -- U-0 R/W-0 R/W-0 -- TECS1(2) TECS0(2) bit 15 bit 8 U-0 R/W-0 -- TGATE R/W-0 TCKPS1 R/W-0 TCKPS0 R/W-0 (3) T32 U-0 -- R/W-0 (2) TCS bit 7 U-0 -- bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15 TON: Timerx On bit When TxCON<3> = 1: 1 = Starts 32-bit Timerx/y 0 = Stops 32-bit Timerx/y When TxCON<3> = 0: 1 = Starts 16-bit Timerx 0 = Stops 16-bit Timerx bit 14 Unimplemented: Read as `0' bit 13 TSIDL: Timerx Stop in Idle Mode bit 1 = Discontinues module operation when device enters Idle mode 0 = Continues module operation in Idle mode bit 12-10 Unimplemented: Read as `0' bit 9-8 TECS<1:0>: Timerx Extended Clock Source Select bits (selected when TCS = 1)(2) When TCS = 1: 11 = Generic Timer (TMRCK) external input 10 = LPRC Oscillator 01 = TxCK external clock input 00 = SOSC When TCS = 0: These bits are ignored; Timerx is clocked from the internal system clock (FOSC/2). bit 7 Unimplemented: Read as `0' bit 6 TGATE: Timerx Gated Time Accumulation Enable bit When TCS = 1: This bit is ignored. When TCS = 0: 1 = Gated time accumulation is enabled 0 = Gated time accumulation is disabled bit 5-4 TCKPS<1:0>: Timerx Input Clock Prescale Select bits 11 = 1:256 10 = 1:64 01 = 1:8 00 = 1:1 Note 1: 2: 3: Changing the value of TxCON while the timer is running (TON = 1) causes the timer prescale counter to reset and is not recommended. If TCS = 1 and TECS<1:0> = x1, the selected external timer input (TMRCK or TxCK) must be configured to an available RPn/RPIn pin. For more information, see Section 11.4 "Peripheral Pin Select (PPS)". In T4CON, the T45 bit is implemented instead of T32 to select 32-bit mode. In 32-bit mode, the T3CON or T5CON control bits do not affect 32-bit timer operation. DS30005009C-page 208 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 13-1: TxCON: TIMER2 AND TIMER4 CONTROL REGISTER(1) (CONTINUED) bit 3 T32: 32-Bit Timer Mode Select bit(3) 1 = Timerx and Timery form a single 32-bit timer 0 = Timerx and Timery act as two 16-bit timers In 32-bit mode, T3CON control bits do not affect 32-bit timer operation. bit 2 Unimplemented: Read as `0' bit 1 TCS: Timerx Clock Source Select bit(2) 1 = Timer source is selected by TECS<1:0> 0 = Internal clock (FOSC/2) bit 0 Unimplemented: Read as `0' Note 1: 2: 3: Changing the value of TxCON while the timer is running (TON = 1) causes the timer prescale counter to reset and is not recommended. If TCS = 1 and TECS<1:0> = x1, the selected external timer input (TMRCK or TxCK) must be configured to an available RPn/RPIn pin. For more information, see Section 11.4 "Peripheral Pin Select (PPS)". In T4CON, the T45 bit is implemented instead of T32 to select 32-bit mode. In 32-bit mode, the T3CON or T5CON control bits do not affect 32-bit timer operation. 2013-2015 Microchip Technology Inc. DS30005009C-page 209 PIC24FJ128GB204 FAMILY TyCON: TIMER3 AND TIMER5 CONTROL REGISTER(1) REGISTER 13-2: R/W-0 U-0 R/W-0 U-0 U-0 U-0 R/W-0 R/W-0 TON(2) -- TSIDL(2) -- -- -- TECS1(2,3) TECS0(2,3) bit 15 bit 8 U-0 R/W-0 R/W-0 R/W-0 U-0 U-0 R/W-0 U-0 -- TGATE(2) TCKPS1(2) TCKPS0(2) -- -- TCS(2,3) -- bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15 TON: Timery On bit(2) 1 = Starts 16-bit Timery 0 = Stops 16-bit Timery bit 14 Unimplemented: Read as `0' bit 13 TSIDL: Timery Stop in Idle Mode bit(2) 1 = Discontinues module operation when device enters Idle mode 0 = Continues module operation in Idle mode bit 12-10 Unimplemented: Read as `0' bit 9-8 TECS<1:0>: Timery Extended Clock Source Select bits (selected when TCS = 1)(2,3) 11 = Generic Timer (TMRCK) external input 10 = LPRC Oscillator 01 = TxCK external clock input 00 = SOSC bit 7 Unimplemented: Read as `0' bit 6 TGATE: Timery Gated Time Accumulation Enable bit(2) When TCS = 1: This bit is ignored. When TCS = 0: 1 = Gated time accumulation is enabled 0 = Gated time accumulation is disabled bit 5-4 TCKPS<1:0>: Timery Input Clock Prescale Select bits(2) 11 = 1:256 10 = 1:64 01 = 1:8 00 = 1:1 bit 3-2 Unimplemented: Read as `0' bit 1 TCS: Timery Clock Source Select bit(2,3) 1 = External clock from pin, TyCK (on the rising edge) 0 = Internal clock (FOSC/2) bit 0 Unimplemented: Read as `0' Note 1: 2: 3: Changing the value of TyCON while the timer is running (TON = 1) causes the timer prescale counter to reset and is not recommended. When 32-bit operation is enabled (T2CON<3> or T4CON<3> = 1), these bits have no effect on Timery operation; all timer functions are set through T2CON and T4CON. If TCS = 1 and TECS<1:0> = x1, the selected external timer input (TyCK) must be configured to an available RPn/RPIn pin. For more information, see Section 11.4 "Peripheral Pin Select (PPS)". DS30005009C-page 210 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 14.0 INPUT CAPTURE WITH DEDICATED TIMERS Note: 14.1 14.1.1 This data sheet summarizes the features of this group of PIC24F devices. It is not intended to be a comprehensive reference source. For more information, refer to the "dsPIC33/PIC24 Family Reference Manual", "Input Capture with Dedicated Timer" (DS39722). The information in this data sheet supersedes the information in the FRM. Devices in the PIC24FJ128GB204 family contain six independent input capture modules. Each of the modules offers a wide range of configuration and operating options for capturing external pulse events and generating interrupts. Key features of the input capture module include: * Hardware-configurable for 32-bit operation in all modes by cascading two adjacent modules * Synchronous and Trigger modes of output compare operation, with up to 30 user-selectable sync/trigger sources available * A 4-level FIFO buffer for capturing and holding timer values for several events * Configurable interrupt generation * Up to 6 clock sources available for each module, driving a separate, internal 16-bit counter The module is controlled through two registers: ICxCON1 (Register 14-1) and ICxCON2 (Register 14-2). A general block diagram of the module is shown in Figure 14-1. FIGURE 14-1: SYNCHRONOUS AND TRIGGER MODES When the input capture module operates in a Free-Running mode, the internal 16-bit counter, ICxTMR, counts up continuously, wrapping around from FFFFh to 0000h on each overflow. Its period is synchronized to the selected external clock source. When a capture event occurs, the current 16-bit value of the internal counter is written to the FIFO buffer. In Synchronous mode, the module begins capturing events on the ICx pin as soon as its selected clock source is enabled. Whenever an event occurs on the selected sync source, the internal counter is reset. In Trigger mode, the module waits for a sync event from another internal module to occur before allowing the internal counter to run. Standard, free-running operation is selected by setting the SYNCSELx bits (ICxCON2<4:0>) to `00000' and clearing the ICTRIG bit (ICxCON2<7>). Synchronous and Trigger modes are selected any time the SYNCSELx bits are set to any value except `00000'. The ICTRIG bit selects either Synchronous or Trigger mode; setting the bit selects Trigger mode operation. In both modes, the SYNCSELx bits determine the sync/trigger source. When the SYNCSELx bits are set to `00000' and ICTRIG is set, the module operates in Software Trigger mode. In this case, capture operations are started by manually setting the TRIGSTAT bit (ICxCON2<6>). INPUT CAPTURE x BLOCK DIAGRAM ICM<2:0> ICx Pin(1) General Operating Modes ICI<1:0> Edge Detect Logic and Clock Synchronizer Prescaler Counter 1:1/4/16 Event and Interrupt Logic Set ICxIF ICTSEL<2:0> ICx Clock Sources Sync and Trigger Sources Clock Select Sync and Trigger Logic Increment 16 ICxTMR Reset ICxBUF SYNCSEL<4:0> Trigger Note 1: 16 4-Level FIFO Buffer ICOV, ICBNE 16 System Bus The ICx inputs must be assigned to an available RPn/RPIn pin before use. See Section 11.4 "Peripheral Pin Select (PPS)" for more information. 2013-2015 Microchip Technology Inc. DS30005009C-page 211 PIC24FJ128GB204 FAMILY 14.1.2 CASCADED (32-BIT) MODE By default, each module operates independently with its own 16-bit timer. To increase resolution, adjacent even and odd modules can be configured to function as a single 32-bit module. (For example, Modules 1 and 2 are paired, as are Modules 3 and 4, and so on.) The odd numbered module, Input Capture x (ICx), provides the Least Significant 16 bits of the 32-bit register pairs and the even numbered module, Input Capture y (ICy), provides the Most Significant 16 bits. Wrap arounds of the ICx registers cause an increment of their corresponding ICy registers. For 32-bit cascaded operations, the setup procedure is slightly different: 1. 2. 3. Cascaded operation is configured in hardware by setting the IC32 bits (ICxCON2<8>) for both modules. 14.2 Capture Operations The input capture module can be configured to capture timer values and generate interrupts on rising edges on ICx or all transitions on ICx. Captures can be configured to occur on all rising edges or just some (every 4th or 16th). Interrupts can be independently configured to generate on each event or a subset of events. 4. 5. Note: To set up the module for capture operations: 1. 2. 3. 4. 5. 6. 7. 8. 9. Configure the ICx input for one of the available Peripheral Pin Select pins. If Synchronous mode is to be used, disable the sync source before proceeding. Make sure that any previous data has been removed from the FIFO by reading ICxBUF until the ICBNE bit (ICxCON1<3>) is cleared. Set the SYNCSELx bits (ICxCON2<4:0>) to the desired sync/trigger source. Set the ICTSELx bits (ICxCON1<12:10>) for the desired clock source. Set the ICIx bits (ICxCON1<6:5>) to the desired interrupt frequency Select Synchronous or Trigger mode operation: a) Check that the SYNCSELx bits are not set to `00000'. b) For Synchronous mode, clear the ICTRIG bit (ICxCON2<7>). c) For Trigger mode, set ICTRIG and clear the TRIGSTAT bit (ICxCON2<6>). Set the ICMx bits (ICxCON1<2:0>) to the desired operational mode. Enable the selected sync/trigger source. DS30005009C-page 212 Set the IC32 bits for both modules (ICyCON2<8> and ICxCON2<8>), enabling the even numbered module first. This ensures that the modules will start functioning in unison. Set the ICTSELx and SYNCSELx bits for both modules to select the same sync/trigger and time base source. Set the even module first, then the odd module. Both modules must use the same ICTSELx and SYNCSELx bit settings. Clear the ICTRIG bit of the even module (ICyCON2<7>). This forces the module to run in Synchronous mode with the odd module, regardless of its trigger setting. Use the odd module's ICIx bits (ICxCON1<6:5>) to set the desired interrupt frequency. Use the ICTRIG bit of the odd module (ICxCON2<7>) to configure Trigger or Synchronous mode operation. 6. For Synchronous mode operation, enable the sync source as the last step. Both input capture modules are held in Reset until the sync source is enabled. Use the ICMx bits of the odd module (ICxCON1<2:0>) to set the desired Capture mode. The module is ready to capture events when the time base and the sync/trigger source are enabled. When the ICBNE bit (ICxCON1<3>) becomes set, at least one capture value is available in the FIFO. Read input capture values from the FIFO until the ICBNE clears to `0'. For 32-bit operation, read both the ICxBUF and ICyBUF for the full 32-bit timer value (ICxBUF for the lsw, ICyBUF for the msw). At least one capture value is available in the FIFO buffer when the odd module's ICBNE bit (ICxCON1<3>) becomes set. Continue to read the buffer registers until ICBNE is cleared (performed automatically by hardware). 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 14-1: ICxCON1: INPUT CAPTURE x CONTROL REGISTER 1 U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 U-0 U-0 -- -- ICSIDL ICTSEL2 ICTSEL1 ICTSEL0 -- -- bit 15 bit 8 U-0 R/W-0 R/W-0 R-0, HSC R-0, HSC R/W-0 R/W-0 R/W-0 -- ICI1 ICI0 ICOV ICBNE ICM2(1) ICM1(1) ICM0(1) bit 7 bit 0 Legend: HSC = Hardware Settable/Clearable bit R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-14 Unimplemented: Read as `0' bit 13 ICSIDL: Input Capture x Stop in Idle Control bit 1 = Input capture module halts in CPU Idle mode 0 = Input capture module continues to operate in CPU Idle mode bit 12-10 ICTSEL<2:0>: Input Capture x Timer Select bits 111 = System clock (FOSC/2) 110 = Reserved 101 = Reserved 100 = Timer1 011 = Timer5 010 = Timer4 001 = Timer2 000 = Timer3 bit 9-7 Unimplemented: Read as `0' bit 6-5 ICI<1:0>: Select Number of Captures per Interrupt bits 11 = Interrupt on every fourth capture event 10 = Interrupt on every third capture event 01 = Interrupt on every second capture event 00 = Interrupt on every capture event bit 4 ICOV: Input Capture x Overflow Status Flag bit (read-only) 1 = Input capture overflow has occurred 0 = No input capture overflow has occurred bit 3 ICBNE: Input Capture x Buffer Empty Status bit (read-only) 1 = Input capture buffer is not empty, at least one more capture value can be read 0 = Input capture buffer is empty bit 2-0 ICM<2:0>: Input Capture x Mode Select bits(1) 111 = Interrupt mode: Input capture functions as an interrupt pin only when the device is in Sleep or Idle mode (rising edge detect only, all other control bits are not applicable) 110 = Unused (module is disabled) 101 = Prescaler Capture mode: Capture on every 16th rising edge 100 = Prescaler Capture mode: Capture on every 4th rising edge 011 = Simple Capture mode: Capture on every rising edge 010 = Simple Capture mode: Capture on every falling edge 001 = Edge Detect Capture mode: Capture on every edge (rising and falling); ICI<1:0> bits do not control interrupt generation for this mode 000 = Input capture module is turned off Note 1: The ICx input must also be configured to an available RPn/RPIn pin. For more information, see Section 11.4 "Peripheral Pin Select (PPS)". 2013-2015 Microchip Technology Inc. DS30005009C-page 213 PIC24FJ128GB204 FAMILY REGISTER 14-2: ICxCON2: INPUT CAPTURE x CONTROL REGISTER 2 U-0 U-0 U-0 U-0 U-0 U-0 U-0 R/W-0 -- -- -- -- -- -- -- IC32 bit 15 bit 8 R/W-0 R/W-0, HS U-0 R/W-0 R/W-1 R/W-1 R/W-0 R/W-1 ICTRIG TRIGSTAT -- SYNCSEL4 SYNCSEL3 SYNCSEL2 SYNCSEL1 SYNCSEL0 bit 7 bit 0 Legend: HS = Hardware Settable bit R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-9 Unimplemented: Read as `0' bit 8 IC32: Cascade Two IC Modules Enable bit (32-bit operation) 1 = ICx and ICy operate in cascade as a 32-bit module (this bit must be set in both modules) 0 = ICx functions independently as a 16-bit module bit 7 ICTRIG: Input Capture x Sync/Trigger Select bit 1 = Triggers ICx from the source designated by the SYNCSELx bits 0 = Synchronizes ICx with the source designated by the SYNCSELx bits bit 6 TRIGSTAT: Timer Trigger Status bit 1 = Timer source has been triggered and is running (set in hardware, can be set in software) 0 = Timer source has not been triggered and is being held clear bit 5 Unimplemented: Read as `0' Note 1: 2: Use these inputs as trigger sources only and never as sync sources. Never use an IC module as its own trigger source by selecting this mode. DS30005009C-page 214 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 14-2: bit 4-0 Note 1: 2: ICxCON2: INPUT CAPTURE x CONTROL REGISTER 2 (CONTINUED) SYNCSEL<4:0>: Synchronization/Trigger Source Selection bits 1111x = Reserved 11101 = Reserved 11100 = CTMU(1) 11011 = A/D(1) 11010 = Comparator 3(1) 11001 = Comparator 2(1) 11000 = Comparator 1(1) 10111 = Reserved 10110 = Reserved 10101 = Input Capture 6(2) 10100 = Input Capture 5(2) 10011 = Input Capture 4(2) 10010 = Input Capture 3(2) 10001 = Input Capture 2(2) 10000 = Input Capture 1(2) 01111 = Timer5 01110 = Timer4 01101 = Timer3 01100 = Timer2 01011 = Timer1 01010 = Reserved 01001 = Reserved 01000 = Reserved 00111 = Reserved 00110 = Output Compare 6 00101 = Output Compare 5 00100 = Output Compare 4 00011 = Output Compare 3 00010 = Output Compare 2 00001 = Output Compare 1 00000 = Not synchronized to any other module Use these inputs as trigger sources only and never as sync sources. Never use an IC module as its own trigger source by selecting this mode. 2013-2015 Microchip Technology Inc. DS30005009C-page 215 PIC24FJ128GB204 FAMILY NOTES: DS30005009C-page 216 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 15.0 Note: OUTPUT COMPARE WITH DEDICATED TIMERS This data sheet summarizes the features of this group of PIC24F devices. It is not intended to be a comprehensive reference source. For more information, refer to the "dsPIC33/PIC24 Family Reference Manual", "Output Compare with Dedicated Timer" (DS70005159). The information in this data sheet supersedes the information in the FRM. Devices in the PIC24FJ128GB204 family all feature six independent output compare modules. Each of these modules offers a wide range of configuration and operating options for generating pulse trains on internal device events, and can produce Pulse-Width Modulated (PWM) waveforms for driving power applications. Key features of the output compare module include: * Hardware-configurable for 32-bit operation in all modes by cascading two adjacent modules * Synchronous and Trigger modes of output compare operation, with up to 31 user-selectable trigger/sync sources available * Two separate Period registers (a main register, OCxR, and a secondary register, OCxRS) for greater flexibility in generating pulses of varying widths * Configurable for single pulse or continuous pulse generation on an output event, or continuous PWM waveform generation * Up to 6 clock sources available for each module, driving a separate internal 16-bit counter 15.1 15.1.1 In Synchronous mode, the module begins performing its compare or PWM operation as soon as its selected clock source is enabled. Whenever an event occurs on the selected sync source, the module's internal counter is reset. In Trigger mode, the module waits for a sync event from another internal module to occur before allowing the counter to run. Free-Running mode is selected by default or any time that the SYNCSELx bits (OCxCON2<4:0>) are set to `00000'. Synchronous or Trigger modes are selected any time the SYNCSELx bits are set to any value except `00000'. The OCTRIG bit (OCxCON2<7>) selects either Synchronous or Trigger mode; setting the bit selects Trigger mode operation. In both modes, the SYNCSELx bits determine the sync/trigger source. 15.1.2 CASCADED (32-BIT) MODE By default, each module operates independently with its own set of 16-bit Timer and Duty Cycle registers. To increase resolution, adjacent even and odd modules can be configured to function as a single 32-bit module. (For example, Modules 1 and 2 are paired, as are Modules 3 and 4, and so on.) The odd numbered module, Output Compare x (OCx), provides the Least Significant 16 bits of the 32-bit register pairs and the even numbered module, Output Compare y (OCy), provides the Most Significant 16 bits. Wrap arounds of the OCx registers cause an increment of their corresponding OCy registers. Cascaded operation is configured in hardware by setting the OC32 bit (OCxCON2<8>) for both modules. For more information on cascading, refer to the "dsPIC33/PIC24 Family Reference Manual", "Output Compare with Dedicated Timer" (DS70005159). General Operating Modes SYNCHRONOUS AND TRIGGER MODES When the output compare module operates in a Free-Running mode, the internal 16-bit counter, OCxTMR, runs counts up continuously, wrapping around from 0xFFFF to 0x0000 on each overflow. Its period is synchronized to the selected external clock source. Compare or PWM events are generated each time a match between the internal counter and one of the Period registers occurs. 2013-2015 Microchip Technology Inc. DS30005009C-page 217 PIC24FJ128GB204 FAMILY FIGURE 15-1: OUTPUT COMPARE x BLOCK DIAGRAM (16-BIT MODE) OCM<2:0> OCINV OCTRIS FLTOUT FLTTRIEN FLTMD ENFLT<2:0> OCFLT<2:0> DCB<1:0> OCxCON1 OCTSEL<2:0> SYNCSEL<4:0> TRIGSTAT TRIGMODE OCTRIG Clock Select OCx Clock Sources OCxCON2 OCxR and DCB<1:0> Increment Comparator OCx Output and OCxTMR Fault Logic Reset Match Event Trigger and Sync Sources Trigger and Sync Logic Comparator OCx Pin(1) Match Event OCFA/OCFB(2) Match Event OCxRS Reset OCx Interrupt Note 1: 2: 15.2 The OCx outputs must be assigned to an available RPn pin before use. For more information, see Section 11.4 "Peripheral Pin Select (PPS)". The OCFA/OCFB Fault inputs must be assigned to an available RPn/RPIn pin before use. For more information, see Section 11.4 "Peripheral Pin Select (PPS)". Compare Operations In Compare mode (Figure 15-1), the output compare module can be configured for single-shot or continuous pulse generation. It can also repeatedly toggle an output pin on each timer event. To set up the module for compare operations: 1. 2. Configure the OCx output for one of the available Peripheral Pin Select pins. Calculate the required values for the OCxR and (for Double Compare modes) OCxRS Duty Cycle registers: a) Determine the instruction clock cycle time. Take into account the frequency of the external clock to the timer source (if one is used) and the timer prescaler settings. b) Calculate the time to the rising edge of the output pulse relative to the timer start value (0000h). c) Calculate the time to the falling edge of the pulse based on the desired pulse width and the time to the rising edge of the pulse. DS30005009C-page 218 3. 4. 5. 6. 7. 8. Write the rising edge value to OCxR and the falling edge value to OCxRS. Set the Timer Period register, PRy, to a value equal to or greater than the value in OCxRS. Set the OCM<2:0> bits for the appropriate compare operation (`0xx'). For Trigger mode operations, set OCTRIG to enable Trigger mode. Set or clear TRIGMODE to configure trigger operation and TRIGSTAT to select a hardware or software trigger. For Synchronous mode, clear OCTRIG. Set the SYNCSEL<4:0> bits to configure the trigger or synchronization source. If free-running timer operation is required, set the SYNCSELx bits to `00000' (no sync/trigger source). Select the time base source with the OCTSEL<2:0> bits. If necessary, set the TON bit for the selected timer, which enables the compare time base to count. Synchronous mode operation starts as soon as the time base is enabled; Trigger mode operation starts after a trigger source event occurs. 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY For 32-bit cascaded operation, these steps are also necessary: 1. 2. 3. 4. 5. 6. Set the OC32 bits for both registers (OCyCON2<8>) and (OCxCON2<8>). Enable the even numbered module first to ensure the modules will start functioning in unison. Clear the OCTRIG bit of the even module (OCyCON2<7>), so the module will run in Synchronous mode. Configure the desired output and Fault settings for OCy. Force the output pin for OCx to the output state by clearing the OCTRIS bit. If Trigger mode operation is required, configure the trigger options in OCx by using the OCTRIG (OCxCON2<7>), TRIGMODE (OCxCON1<3>) and SYNCSELx (OCxCON2<4:0>) bits. Configure the desired Compare or PWM mode of operation (OCM<2:0>) for OCy first, then for OCx. 15.3 In PWM mode, the output compare module can be configured for edge-aligned or center-aligned pulse waveform generation. All PWM operations are double-buffered (buffer registers are internal to the module and are not mapped into SFR space). To configure the output compare module for PWM operation: 1. 2. 3. 4. Depending on the output mode selected, the module holds the OCx pin in its default state and forces a transition to the opposite state when OCxR matches the timer. In Double Compare modes, OCx is forced back to its default state when a match with OCxRS occurs. The OCxIF interrupt flag is set after an OCxR match in Single Compare modes and after each OCxRS match in Double Compare modes. 5. Single-shot pulse events only occur once, but may be repeated by simply rewriting the value of the OCxCON1 register. Continuous pulse events continue indefinitely until terminated. 8. 6. 7. 9. Configure the OCx output for one of the available Peripheral Pin Select pins. Calculate the desired duty cycles and load them into the OCxR register. Calculate the desired period and load it into the OCxRS register. Select the current OCx as the synchronization source by writing `0x1F' to the SYNCSEL<4:0> bits (OCxCON2<4:0>) and `0' to the OCTRIG bit (OCxCON2<7>). Select a clock source by writing to the OCTSEL<2:0> bits (OCxCON1<12:10>). Enable interrupts, if required, for the timer and output compare modules. The output compare interrupt is required for PWM Fault pin utilization. Select the desired PWM mode in the OCM<2:0> bits (OCxCON1<2:0>). Appropriate Fault inputs may be enabled by using the ENFLT<2:0> bits as described in Register 15-1. If a timer is selected as a clock source, set the selected timer prescale value. The selected timer's prescaler output is used as the clock input for the OCx timer and not the selected timer output. Note: 2013-2015 Microchip Technology Inc. Pulse-Width Modulation (PWM) Mode This peripheral contains input and output functions that may need to be configured by the Peripheral Pin Select. For more information, see Section 11.4 "Peripheral Pin Select (PPS)". DS30005009C-page 219 PIC24FJ128GB204 FAMILY FIGURE 15-2: OUTPUT COMPARE x BLOCK DIAGRAM (DOUBLE-BUFFERED, 16-BIT PWM MODE) OCxCON1 OCM<2:0> OCINV OCTRIS FLTOUT FLTTRIEN FLTMD ENFLT<2:0> OCFLT<2:0> DCB<1:0> OCxCON2 OCTSEL<2:0> SYNCSEL<4:0> TRIGSTAT TRIGMODE OCTRIG OCxR and DCB<1:0> Rollover/Reset OCxR and DCB<1:0> Buffers OCx Pin(1) Comparator Clock Select OCx Clock Sources Increment OCxTMR Reset Trigger and Sync Logic Trigger and Sync Sources Match Event Comparator Match Event Rollover OCx Output and Fault Logic OCFA/OCFB(2) Match Event OCxRS Buffer Rollover/Reset OCxRS OCx Interrupt Reset Note 1: 2: 15.3.1 The OCx outputs must be assigned to an available RPn pin before use. For more information, see Section 11.4 "Peripheral Pin Select (PPS)". The OCFA/OCFB Fault inputs must be assigned to an available RPn/RPIn pin before use. For more information, see Section 11.4 "Peripheral Pin Select (PPS)". PWM PERIOD The PWM period is specified by writing to PRy, the Timer Period register. The PWM period can be calculated using Equation 15-1. EQUATION 15-1: CALCULATING THE PWM PERIOD(1) PWM Period = [(PRy) + 1] * TCY * (Timer Prescale Value) where: PWM Frequency = 1/[PWM Period] Note 1: Based on TCY = TOSC * 2; Doze mode and PLL are disabled. Note: A PRy value of N will produce a PWM period of N + 1 time base count cycles. For example, a value of 7 written into the PRy register will yield a period consisting of 8 time base cycles. DS30005009C-page 220 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 15.3.2 PWM DUTY CYCLE Some important boundary parameters of the PWM duty cycle include: The PWM duty cycle is specified by writing to the OCxRS and OCxR registers. The OCxRS and OCxR registers can be written to at any time, but the duty cycle value is not latched until a match between PRy and TMRy occurs (i.e., the period is complete). This provides a double buffer for the PWM duty cycle and is essential for glitchless PWM operation. * If OCxR, OCxRS and PRy are all loaded with 0000h, the OCx pin will remain low (0% duty cycle). * If OCxRS is greater than PRy, the pin will remain high (100% duty cycle). See Example 15-1 for PWM mode timing details. Table 15-1 and Table 15-2 show example PWM frequencies and resolutions for a device operating at 4 MIPS and 10 MIPS, respectively. CALCULATION FOR MAXIMUM PWM RESOLUTION(1) EQUATION 15-2: log10 Maximum PWM Resolution (bits) = (F PWM FCY * (Timer Prescale Value) ) log10 bits Note 1: Based on FCY = FOSC/2; Doze mode and PLL are disabled. EXAMPLE 15-1: 1. PWM PERIOD AND DUTY CYCLE CALCULATIONS(1) Find the Timer Period register value for a desired PWM frequency of 52.08 kHz, where FOSC = 8 MHz with PLL (32 MHz device clock rate) and a Timer2 prescaler setting of 1:1. TCY = 2 * TOSC = 62.5 ns PWM Period = 1/PWM Frequency = 1/52.08 kHz = 19.2 ms PWM Period = (PR2 + 1) * TCY * (Timer2 Prescale Value) 19.2 s = (PR2 + 1) * 62.5 ns * 1 PR2 = 306 2. Find the maximum resolution of the duty cycle that can be used with a 52.08 kHz frequency and a 32 MHz device clock rate. PWM Resolution = log10 (FCY/FPWM)/log102) bits = (log10 (16 MHz/52.08 kHz)/log102) bits = 8.3 bits Note 1: Based on TCY = 2 * TOSC; Doze mode and PLL are disabled. TABLE 15-1: EXAMPLE PWM FREQUENCIES AND RESOLUTIONS AT 4 MIPS (FCY = 4 MHz)(1) PWM Frequency 7.6 Hz 61 Hz 122 Hz 977 Hz 3.9 kHz 31.3 kHz 125 kHz Timer Prescaler Ratio 8 1 1 1 1 1 1 Period Register Value FFFFh FFFFh 7FFFh 0FFFh 03FFh 007Fh 001Fh 16 16 15 12 10 7 5 Resolution (bits) Note 1: Based on FCY = FOSC/2; Doze mode and PLL are disabled. TABLE 15-2: EXAMPLE PWM FREQUENCIES AND RESOLUTIONS AT 16 MIPS (FCY = 16 MHz)(1) PWM Frequency 30.5 Hz 244 Hz 488 Hz 3.9 kHz 15.6 kHz 125 kHz 500 kHz Timer Prescaler Ratio 8 1 1 1 1 1 1 Period Register Value FFFFh FFFFh 7FFFh 0FFFh 03FFh 007Fh 001Fh 16 16 15 12 10 7 5 Resolution (bits) Note 1: Based on FCY = FOSC/2; Doze mode and PLL are disabled. 2013-2015 Microchip Technology Inc. DS30005009C-page 221 PIC24FJ128GB204 FAMILY REGISTER 15-1: OCxCON1: OUTPUT COMPARE x CONTROL REGISTER 1 U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 -- -- OCSIDL OCTSEL2 OCTSEL1 OCTSEL0 ENFLT2(2) ENFLT1(2) bit 15 bit 8 R/W-0 R/W-0, HSC R/W-0, HSC R/W-0, HSC R/W-0 R/W-0 R/W-0 R/W-0 ENFLT0(2) OCFLT2(2,3) OCFLT1(2,4) OCFLT0(2,4) TRIGMODE OCM2(1) OCM1(1) OCM0(1) bit 7 bit 0 Legend: HSC = Hardware Settable/Clearable bit R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-14 Unimplemented: Read as `0' bit 13 OCSIDL: Output Compare x Stop in Idle Mode Control bit 1 = Output Compare x halts in CPU Idle mode 0 = Output Compare x continues to operate in CPU Idle mode bit 12-10 OCTSEL<2:0>: Output Compare x Timer Select bits 111 = Peripheral clock (FCY) 110 = Reserved 101 = Reserved 100 = Timer1 clock (only synchronous clock is supported) 011 = Timer5 clock 010 = Timer4 clock 001 = Timer3 clock 000 = Timer2 clock bit 9 ENFLT2: Fault Input 2 Enable bit(2) 1 = Fault 2 (Comparator 1/2/3 out) is enabled(3) 0 = Fault 2 is disabled bit 8 ENFLT1: Fault Input 1 Enable bit(2) 1 = Fault 1 (OCFB pin) is enabled(4) 0 = Fault 1 is disabled bit 7 ENFLT0: Fault Input 0 Enable bit(2) 1 = Fault 0 (OCFA pin) is enabled(4) 0 = Fault 0 is disabled bit 6 OCFLT2: Output Compare x PWM Fault 2 (Comparator 1/2/3) Condition Status bit(2,3) 1 = PWM Fault 2 has occurred 0 = No PWM Fault 2 has occurred bit 5 OCFLT1: Output Compare x PWM Fault 1 (OCFB pin) Condition Status bit(2,4) 1 = PWM Fault 1 has occurred 0 = No PWM Fault 1 has occurred Note 1: 2: 3: 4: The OCx output must also be configured to an available RPn pin. For more information, see Section 11.4 "Peripheral Pin Select (PPS)". The Fault input enable and Fault status bits are valid when OCM<2:0> = 111 or 110. The Comparator 1 output controls the OC1-OC2 channels; Comparator 2 output controls the OC3-OC4 channels; Comparator 3 output controls the OC5-OC6 channels. The OCFA/OCFB Fault input must also be configured to an available RPn/RPIn pin. For more information, see Section 11.4 "Peripheral Pin Select (PPS)". DS30005009C-page 222 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 15-1: OCxCON1: OUTPUT COMPARE x CONTROL REGISTER 1 (CONTINUED) bit 4 OCFLT0: Output Compare x PWM Fault 0 (OCFA pin) Condition Status bit(2,4) 1 = PWM Fault 0 has occurred 0 = No PWM Fault 0 has occurred bit 3 TRIGMODE: Trigger Status Mode Select bit 1 = TRIGSTAT (OCxCON2<6>) is cleared when OCxRS = OCxTMR or in software 0 = TRIGSTAT is only cleared by software bit 2-0 OCM<2:0>: Output Compare x Mode Select bits(1) 111 = Center-Aligned PWM mode on OCx(2) 110 = Edge-Aligned PWM mode on OCx(2) 101 = Double Compare Continuous Pulse mode: Initializes the OCx pin low; toggles the OCx state continuously on alternate matches of OCxR and OCxRS 100 = Double Compare Single-Shot mode: Initializes the OCx pin low; toggles the OCx state on matches of OCxR and OCxRS for one cycle 011 = Single Compare Continuous Pulse mode: Compare events continuously toggle the OCx pin 010 = Single Compare Single-Shot mode: Initializes OCx pin high; compare event forces the OCx pin low 001 = Single Compare Single-Shot mode: Initializes OCx pin low; compare event forces the OCx pin high 000 = Output compare channel is disabled Note 1: 2: 3: 4: The OCx output must also be configured to an available RPn pin. For more information, see Section 11.4 "Peripheral Pin Select (PPS)". The Fault input enable and Fault status bits are valid when OCM<2:0> = 111 or 110. The Comparator 1 output controls the OC1-OC2 channels; Comparator 2 output controls the OC3-OC4 channels; Comparator 3 output controls the OC5-OC6 channels. The OCFA/OCFB Fault input must also be configured to an available RPn/RPIn pin. For more information, see Section 11.4 "Peripheral Pin Select (PPS)". 2013-2015 Microchip Technology Inc. DS30005009C-page 223 PIC24FJ128GB204 FAMILY REGISTER 15-2: OCxCON2: OUTPUT COMPARE x CONTROL REGISTER 2 R/W-0 R/W-0 R/W-0 R/W-0 U-0 R/W-0 R/W-0 R/W-0 FLTMD FLTOUT FLTTRIEN OCINV -- DCB1(3) DCB0(3) OC32 bit 15 bit 8 R/W-0 R/W-0, HS R/W-0 R/W-0 R/W-1 R/W-1 R/W-0 R/W-0 OCTRIG TRIGSTAT OCTRIS SYNCSEL4 SYNCSEL3 SYNCSEL2 SYNCSEL1 SYNCSEL0 bit 7 bit 0 Legend: HS = Hardware Settable bit R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15 FLTMD: Fault Mode Select bit 1 = Fault mode is maintained until the Fault source is removed and the corresponding OCFLT0 bit is cleared in software 0 = Fault mode is maintained until the Fault source is removed and a new PWM period starts bit 14 FLTOUT: Fault Out bit 1 = PWM output is driven high on a Fault 0 = PWM output is driven low on a Fault bit 13 FLTTRIEN: Fault Output State Select bit 1 = Pin is forced to an output on a Fault condition 0 = Pin I/O condition is unaffected by a Fault bit 12 OCINV: Output Compare x Invert bit 1 = OCx output is inverted 0 = OCx output is not inverted bit 11 Unimplemented: Read as `0' bit 10-9 DCB<1:0>: PWM Duty Cycle Least Significant bits(3) 11 = Delays OCx falling edge by 3/4 of the instruction cycle 10 = Delays OCx falling edge by 1/2 of the instruction cycle 01 = Delays OCx falling edge by 1/4 of the instruction cycle 00 = OCx falling edge occurs at the start of the instruction cycle bit 8 OC32: Cascade Two OC Modules Enable bit (32-bit operation) 1 = Cascade module operation is enabled 0 = Cascade module operation is disabled bit 7 OCTRIG: Output Compare x Trigger/Sync Select bit 1 = Triggers OCx from the source designated by the SYNCSELx bits 0 = Synchronizes OCx with the source designated by the SYNCSELx bits bit 6 TRIGSTAT: Timer Trigger Status bit 1 = Timer source has been triggered and is running 0 = Timer source has not been triggered and is being held clear bit 5 OCTRIS: Output Compare x Output Pin Direction Select bit 1 = OCx pin is tri-stated 0 = Output Compare Peripheral x is connected to an OCx pin Note 1: 2: 3: Never use an OCx module as its own trigger source, either by selecting this mode or another equivalent SYNCSELx setting. Use these inputs as trigger sources only and never as sync sources. The DCB<1:0> bits are double-buffered in PWM modes only (OCM<2:0> (OCxCON1<2:0>) = 111, 110). DS30005009C-page 224 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 15-2: bit 4-0 OCxCON2: OUTPUT COMPARE x CONTROL REGISTER 2 (CONTINUED) SYNCSEL<4:0>: Trigger/Synchronization Source Selection bits 11111 = This OC module(1) 11110 = OCTRIG1 external input 11101 = OCTRIG2 external input 11100 = CTMU(2) 11011 = A/D(2) 11010 = Comparator 3(2) 11001 = Comparator 2(2) 11000 = Comparator 1(2) 10111 = Reserved 10110 = Reserved 10101 = Input Capture 6(2) 10100 = Input Capture 5(2) 10011 = Input Capture 4(2) 10010 = Input Capture 3(2) 10001 = Input Capture 2(2) 10000 = Input Capture 1(2) 01111 = Timer5 01110 = Timer4 01101 = Timer3 01100 = Timer2 01011 = Timer1 01010 = Reserved 01001 = Reserved 01000 = Reserved 00111 = Reserved 00110 = Output Compare 6(1) 00101 = Output Compare 5(1) 00100 = Output Compare 4(1) 00011 = Output Compare 3(1) 00010 = Output Compare 2(1) 00001 = Output Compare 1(1) 00000 = Not synchronized to any other module Note 1: 2: 3: Never use an OCx module as its own trigger source, either by selecting this mode or another equivalent SYNCSELx setting. Use these inputs as trigger sources only and never as sync sources. The DCB<1:0> bits are double-buffered in PWM modes only (OCM<2:0> (OCxCON1<2:0>) = 111, 110). 2013-2015 Microchip Technology Inc. DS30005009C-page 225 PIC24FJ128GB204 FAMILY NOTES: DS30005009C-page 226 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 16.0 Note: SERIAL PERIPHERAL INTERFACE (SPI) This data sheet summarizes the features of the PIC24FJ128GB204 family of devices. It is not intended to be a comprehensive reference source. To complement the information in this data sheet, refer to the "dsPIC33/PIC24 Family Reference Manual", "Serial Peripheral Interface (SPI) with Audio Codec Support" (DS70005136) which is available from the Microchip web site (www.microchip.com). The Serial Peripheral Interface (SPI) module is a synchronous serial interface useful for communicating with other peripheral or microcontroller devices. These peripheral devices may be serial EEPROMs, shift registers, display drivers, A/D Converters, etc. The SPI module is compatible with the Motorola(R) SPI and SIOP interfaces. All devices in the PIC24FJ128GB204 family include three SPI modules. The module supports operation in two Buffer modes. In Standard Buffer mode, data is shifted through a single serial buffer. In Enhanced Buffer mode, data is shifted through a FIFO buffer. The FIFO level depends on the configured mode. The SPI serial interface consists of four pins: * * * * The SPI module can be configured to operate using 2, 3 or 4 pins. In the 3-pin mode, SSx is not used. In the 2-pin mode, both SDOx and SSx are not used. The SPI module has the ability to generate three interrupts, reflecting the events that occur during the data communication. The following types of interrupts can be generated: 1. Do not perform Read-Modify-Write operations (such as bit-oriented instructions) on the SPIxBUF register in either Standard or Enhanced Buffer mode. The module also supports a basic framed SPI protocol while operating in either Master or Slave mode. A total of four framed SPI configurations are supported. The module also supports Audio modes. Four different Audio modes are available. * * * * I2S mode Left Justified Right Justified PCM/DSP In each of these modes, the serial clock is free-running and audio data is always transferred. If an audio protocol data transfer takes place between two devices, then usually one device is the master and the other is the slave. However, audio data can be transferred between two slaves. Because the audio protocols require free-running clocks, the master can be a third party controller. In either case, the master generates two free-running clocks: SCKx and LRC (Left, Right Channel Clock/SSx/FSYNC). 2013-2015 Microchip Technology Inc. Receive interrupts are signalled by SPIxRXIF. This event occurs when: - RX watermark interrupt - SPIROV = 1 - SPIRBF = 1 - SPIRBE = 1 provided the respective mask bits are enabled in SPIxIMSKL/H. 2. Variable length data can be transmitted and received, from 2 to 32 bits. Note: SDIx: Serial Data Input SDOx: Serial Data Output SCKx: Shift Clock Input or Output SSx: Active-Low Slave Select or Frame Synchronization I/O Pulse Transmit interrupts are signalled by SPIxTXIF. This event occurs when: - TX watermark interrupt - SPITUR = 1 - SPITBF = 1 - SPITBE = 1 provided the respective mask bits are enabled in SPIxIMSKL/H. 3. General interrupts are signalled by SPIxIF. This event occurs when - FRMERR = 1 - SPIBUSY = 1 - SRMT = 1 provided the respective mask bits are enabled in SPIxIMSKL/H. Block diagrams of the module in Standard and Enhanced modes are shown in Figure 16-1 and Figure 16-2. Note: In this section, the SPI modules are referred to together as SPIx, or separately as SPI1, SPI2 or SPI3. Special Function Registers will follow a similar notation. For example, SPIxCON1L and SPIxCON1H refer to the control registers for any of the three SPI modules. DS30005009C-page 227 PIC24FJ128GB204 FAMILY 16.1 Standard Master Mode 16.2 Standard Slave Mode To set up the SPIx module for the Standard Master mode of operation: To set up the SPIx module for the Standard Slave mode of operation: 1. 1. 2. 2. 3. 4. 5. If using interrupts: a) Clear the interrupt flag bits in the respective IFSx register. b) Set the interrupt enable bits in the respective IECx register. c) Write the SPIxIP<2:0> bits in the respective IPCx register to set the interrupt priority. Write the desired settings to the SPIxCON1L and SPIxCON1H registers with the MSTEN bit (SPIxCON1L<5>) = 1. Clear the SPIROV bit (SPIxSTATL<6>). Enable SPIx operation by setting the SPIEN bit (SPIxCON1L<15>). Write the data to be transmitted to the SPIxBUFL and SPIxBUFH registers. Transmission (and reception) will start as soon as data is written to the SPIxBUFL and SPIxBUFH registers. FIGURE 16-1: 3. 4. 5. 6. 7. Clear the SPIxBUF registers. If using interrupts: a) Clear the SPIxBUFL and SPIxBUFH registers. b) Set the interrupt enable bits in the respective IECx register. c) Write the SPIxIP<2:0> bits in the respective IPCx register to set the interrupt priority. Write the desired settings to the SPIxCON1L, SPIxCON1H and SPIxCON2L registers with the MSTEN bit (SPIxCON1L<5>) = 0. Clear the SMP bit. If the CKE bit (SPIxCON1L<8>) is set, then the SSEN bit (SPIxCON1L<7>) must be set to enable the SSx pin. Clear the SPIROV bit (SPIxSTATL<6>). Enable SPIx operation by setting the SPIEN bit (SPIxCON1L<15>). SPIx MODULE BLOCK DIAGRAM (STANDARD MODE) Internal Data Bus Write Read SPIxRXB SPIxTXB SPIxURDT MSB Receive Transmit SPIxTXSR SPIxRXSR SDIx MSB 0 Shift Control SDOx SSx/FSYNC SSx & FSYNC Control Clock Control 1 TXELM<5:0> = 6'b0 URDTEN Edge Select MCLKEN Baud Rate Generator SCKx Edge Select DS30005009C-page 228 Clock Control MCLK PBCLK Enable Master Clock 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 16.3 Enhanced Slave Mode 16.4 To set up the SPIx module for the Enhanced Buffer Slave mode of operation: To set up the SPIx module for the Enhanced Buffer Master mode of operation: 1. 2. 3. 4. 5. 6. 1. 2. If using interrupts: a) Clear the interrupt flag bits in the respective IFSx register. b) Set the interrupt enable bits in the respective IECx register. c) Write the SPIxIP<2:0> bits in the respective IPCx register. Write the desired settings to the SPIxCON1L, SPIxCON1H and SPIxCON2L registers with MSTEN (SPIxCON1L<5>) = 1. Clear the SPIROV bit (SPIxSTATL<6>). Select Enhanced Buffer mode by setting the ENHBUF bit (SPIxCON1L<0>). Enable SPIx operation by setting the SPIEN bit (SPIxCON1L<15>). Write the data to be transmitted to the SPIxBUFL and SPIxBUFH registers. Transmission (and reception) will start as soon as data is written to the SPIxBUFL and SPIxBUFH registers. FIGURE 16-2: Enhanced Master Mode 3. 4. 5. 6. 7. 8. Clear the SPIxBUFL and SPIxBUFH registers. If using interrupts: a) Clear the interrupt flag bits in the respective IFSx register. b) Set the interrupt enable bits in the respective IECx register. c) Write the SPIxIP<2:0> bits in the respective IPCx register to set the interrupt priority. Write the desired settings to the SPIxCON1L, SPIxCON1H and SPIxCON2L registers with the MSTEN bit (SPIxCON1L<5>) = 0. Clear the SMP bit. If the CKE bit is set, then the SSEN bit must be set, thus enabling the SSx pin. Clear the SPIROV bit (SPIxSTATL<6>). Select Enhanced Buffer mode by setting the ENHBUF bit (SPIxCON1L<0>). Enable SPIx operation by setting the SPIEN bit (SPIxCON1L<15>). SPIx MODULE BLOCK DIAGRAM (ENHANCED MODE) Internal Data Bus Write Read SPIxTXB SPIxTXB SPIxRXB SPIxURDT MSB Transmit Receive SPIxTXSR SPIxRXSR SDIx MSB 0 Shift Control SDOx SSx/FSYNC SSx & FSYNC Control Clock Control 1 TXELM<5:0> = 6'b0 URDTEN Edge Select MCLKEN Baud Rate Generator SCKx Edge Select 2013-2015 Microchip Technology Inc. Clock Control MCLK PBCLK Enable Master Clock DS30005009C-page 229 PIC24FJ128GB204 FAMILY 16.5 Audio Mode To set up the SPIx module for the Audio mode: 1. 2. 3. 4. 5. 6. Clear the SPIxBUFL and SPIxBUFH registers. If using interrupts: a) Clear the interrupt flag bits in the respective IFSx register. b) Set the interrupt enable bits in the respective IECx register. a) Write the SPIxIP<2:0> bits in the respective IPCx register to set the interrupt priority. Write the desired settings to the SPIxCON1L, SPIxCON1H and SPIxCON2L registers with AUDEN (SPIxCON1H<15>) = 1. Clear the SPIROV bit (SPIxSTATL<6>). Enable SPIx operation by setting the SPIEN bit (SPIxCON1L<15>). Write the data to be transmitted to the SPIxBUFL and SPIxBUFH registers. Transmission (and reception) will start as soon as data is written to the SPIxBUFL and SPIxBUFH registers. DS30005009C-page 230 16.6 Registers The SPI module consists of the following Special Function Registers (SFRs): * SPIxCON1L, SPIxCON1H and SPIxCON2L: SPIx Control Registers (Register 16-1 through Register 16-3) * SPIxSTATL and SPIxSTATH: SPIx Status Registers (Register 16-4 and Register 16-5) * SPIxBUFL and SPIxBUFH: SPIx Buffer Registers * SPIxBRGL: SPIx Baud Rate Register * SPIxIMSKL and SPIxIMSKH: SPIx Interrupt Mask Registers (Register 16-6 and Register 16-7) * SPIxURDTL and SPIxURDTH: SPIx Underrun Data Registers 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 16-1: R/W-0 SPIxCON1L: SPIx CONTROL REGISTER 1 LOW U-0 SPIEN -- R/W-0 SPISIDL R/W-0 DISSDO R/W-0 MODE32 (1,4) R/W-0 MODE16 (1,4) R/W-0 R/W-0 SMP CKE(1) bit 15 bit 8 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 CKP MSTEN DISSDI DISSCK MCLKEN(3) SPIFE ENHBUF (2) SSEN bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15 SPIEN: SPIx On bit 1 = Enables module 0 = Turns off and resets module, disables clocks, disables interrupt event generation, allows SFR modifications bit 14 Unimplemented: Read as `0' bit 13 SPISIDL: SPIx Stop in Idle Mode bit 1 = Halts in CPU Idle mode 0 = Continues to operate in CPU Idle mode bit 12 DISSDO: Disable SDOx Output Port bit 1 = SDOx pin is not used by the module; pin is controlled by the port function 0 = SDOx pin is controlled by the module bit 11-10 MODE<32,16>: Serial Word Length bits(1,4) AUDEN = 0: MODE32 MODE16 COMMUNICATION 1 x 32-Bit 0 1 16-Bit 0 0 8-Bit AUDEN = 1: MODE32 MODE16 COMMUNICATION 1 1 24-Bit Data, 32-Bit FIFO, 32-Bit Channel/64-Bit Frame 1 0 32-Bit Data, 32-Bit FIFO, 32-Bit Channel/64-Bit Frame 0 1 16-Bit Data, 16-Bit FIFO, 32-Bit Channel/64-Bit Frame 0 0 16-Bit Data, 16-Bit FIFO, 16-Bit Channel/32-Bit Frame bit 9 SMP: SPIx Data Input Sample Phase bit Master Mode: 1 = Input data is sampled at the end of data output time 0 = Input data is sampled at the middle of data output time Slave Mode: Input data is always sampled at the middle of data output time, regardless of the SMP bit setting. bit 8 CKE: SPIx Clock Edge Select bit(1) 1 = Transmit happens on transition from active clock state to Idle clock state 0 = Transmit happens on transition from Idle clock state to active clock state Note 1: 2: 3: 4: When AUDEN = 1, this module functions as if CKE = 0, regardless of its actual value. When FRMEN = 1, SSEN is not used. MCLKEN can only be written when the SPIEN bit = 0. This channel is not meaningful for DSP/PCM mode as LRC follows FRMSYPW. 2013-2015 Microchip Technology Inc. DS30005009C-page 231 PIC24FJ128GB204 FAMILY REGISTER 16-1: SPIxCON1L: SPIx CONTROL REGISTER 1 LOW (CONTINUED) bit 7 SSEN: Slave Select Enable bit (Slave mode)(2) 1 = SSx pin is used by the macro in Slave mode; SSx pin is used as the slave select input 0 = SSx pin is not used by the macro (SSx pin will be controlled by the port I/O) bit 6 CKP: Clock Polarity Select bit 1 = Idle state for clock is a high level; active state is a low level 0 = Idle state for clock is a low level; active state is a high level bit 5 MSTEN: Master Mode Enable bit 1 = Master mode 0 = Slave mode bit 4 DISSDI: Disable SDIx Input Port bit 1 = SDIx pin is not used by the module; pin is controlled by the port function 0 = SDIx pin is controlled by the module bit 3 DISSCK: Disable SCKx Output Port bit 1 = SCKx pin is not used by the module; pin is controlled by the port function 0 = SCKx pin is controlled by the module bit 2 MCLKEN: Master Clock Enable bit(3) 1 = MCLK is used by the BRG 0 = PBCLK is used by the BRG bit 1 SPIFE: Frame Sync Pulse Edge Select bit 1 = Frame Sync pulse (Idle-to-active edge) coincides with the first bit clock 0 = Frame Sync pulse (Idle-to-active edge) precedes the first bit clock bit 0 ENHBUF: Enhanced Buffer Mode Enable bit 1 = Enhanced Buffer mode is enabled 0 = Enhanced Buffer mode is disabled Note 1: 2: 3: 4: When AUDEN = 1, this module functions as if CKE = 0, regardless of its actual value. When FRMEN = 1, SSEN is not used. MCLKEN can only be written when the SPIEN bit = 0. This channel is not meaningful for DSP/PCM mode as LRC follows FRMSYPW. DS30005009C-page 232 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 16-2: SPIxCON1H: SPIx CONTROL REGISTER 1 HIGH R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 AUDEN(1) SPISGNEXT IGNROV IGNTUR AUDMONO(2) URDTEN(3) R/W-0 R/W-0 AUDMOD1(4) AUDMOD0(4) bit 15 bit 8 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 FRMEN FRMSYNC FRMPOL MSSEN FRMSYPW FRMCNT2 FRMCNT1 FRMCNT0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15 AUDEN: Audio Codec Support Enable bit(1) 1 = Audio protocol is enabled; MSTEN controls the direction of both SCKx and Frame (a.k.a. LRC), and this module functions as if FRMEN = 1, FRMSYNC = MSTEN, FRMCNT<2:0> = 001 and SMP = 0, regardless of their actual values 0 = Audio protocol is disabled bit 14 SPISGNEXT: SPIx Sign-Extend RX FIFO Read Data Enable bit 1 = Data from RX FIFO is sign-extended 0 = Data from RX FIFO is not sign-extended bit 13 IGNROV: Ignore Receive Overflow bit 1 = A Receive Overflow (ROV) is NOT a critical error; during ROV, data in the FIFO is not overwritten by the receive data 0 = A ROV is a critical error that stops SPI operation bit 12 IGNTUR: Ignore Transmit Underrun bit 1 = A Transmit Underrun (TUR) is NOT a critical error and data indicated by URDTEN is transmitted until the SPIxTXB is not empty 0 = A TUR is a critical error that stops SPI operation bit 11 AUDMONO: Audio Data Format Transmit bit(2) 1 = Audio data is mono (i.e., each data word is transmitted on both left and right channels) 0 = Audio data is stereo bit 10 URDTEN: Transmit Underrun Data Enable bit(3) 1 = Transmits data out of SPIxURDTL/H registers during Transmit Underrun (TUR) conditions 0 = Transmits the last received data during Transmit Underrun conditions bit 9-8 AUDMOD<1:0>: Audio Protocol Mode Selection bits(4) 11 = PCM/DSP mode 10 = Right Justified mode: This module functions as if SPIFE = 1, regardless of its actual value 01 = Left Justified mode: This module functions as if SPIFE = 1, regardless of its actual value 00 = I2S mode: This module functions as if SPIFE = 0, regardless of its actual value bit 7 FRMEN: Framed SPIx Support bit 1 = Framed SPIx support is enabled (SSx pin is used as the FSYNC input/output) 0 = Framed SPIx support is disabled Note 1: 2: 3: 4: AUDEN can only be written when the SPIEN bit = 0. AUDMONO can only be written when the SPIEN bit = 0 and is only valid for AUDEN = 1. URDTEN is only valid when IGNTUR = 1. AUDMOD<1:0> can only be written when the SPIEN bit = 0 and are only valid when AUDEN = 1. When NOT in PCM/DSP mode, this module functions as if FRMSYPW = 1, regardless of its actual value. 2013-2015 Microchip Technology Inc. DS30005009C-page 233 PIC24FJ128GB204 FAMILY REGISTER 16-2: SPIxCON1H: SPIx CONTROL REGISTER 1 HIGH (CONTINUED) bit 6 FRMSYNC: Frame Sync Pulse Direction Control bit 1 = Frame Sync pulse input (slave) 0 = Frame Sync pulse output (master) bit 5 FRMPOL: Frame Sync/Slave Select Polarity bit 1 = Frame Sync pulse/slave select is active-high 0 = Frame Sync pulse/slave select is active-low bit 4 MSSEN: Master Mode Slave Select Enable bit 1 = SPIx slave select support is enabled with polarity determined by FRMPOL (SSx pin is automatically driven during transmission in Master mode) 0 = SPIx slave select support is disabled (SSx pin will be controlled by port I/O) bit 3 FRMSYPW: Frame Sync Pulse-Width bit 1 = Frame Sync pulse is one serial word length wide (as defined by MODE<32,16>/WLENGTH<4:0>) 0 = Frame Sync pulse is one clock (SCK) wide bit 2-0 FRMCNT<2:0>: Frame Sync Pulse Counter bits Controls the number of serial words transmitted per Sync pulse. 111 = Reserved 110 = Reserved 101 = Generates a Frame Sync pulse on every 32 serial words 100 = Generates a Frame Sync pulse on every 16 serial words 011 = Generates a Frame Sync pulse on every 8 serial words 010 = Generates a Frame Sync pulse on every 4 serial words 001 = Generates a Frame Sync pulse on every 2 serial words (value used by audio protocols) 000 = Generates a Frame Sync pulse on each serial word Note 1: 2: 3: 4: AUDEN can only be written when the SPIEN bit = 0. AUDMONO can only be written when the SPIEN bit = 0 and is only valid for AUDEN = 1. URDTEN is only valid when IGNTUR = 1. AUDMOD<1:0> can only be written when the SPIEN bit = 0 and are only valid when AUDEN = 1. When NOT in PCM/DSP mode, this module functions as if FRMSYPW = 1, regardless of its actual value. DS30005009C-page 234 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 16-3: SPIxCON2L: SPIx CONTROL REGISTER 2 LOW U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 15 bit 8 U-0 U-0 U-0 -- -- -- R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 WLENGTH<4:0>(1,2) bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-5 Unimplemented: Read as `0' bit 4-0 WLENGTH<4:0>: Variable Word Length bits(1,2) 11111 = 32-bit data 11110 = 31-bit data 11101 = 30-bit data 11100 = 29-bit data 11011 = 28-bit data 11010 = 27-bit data 11001 = 26-bit data 11000 = 25-bit data 10111 = 24-bit data 10110 = 23-bit data 10101 = 22-bit data 10100 = 21-bit data 10011 = 20-bit data 10010 = 19-bit data 10001 = 18-bit data 10000 = 17-bit data 01111 = 16-bit data 01110 = 15-bit data 01101 = 14-bit data 01100 = 13-bit data 01011 = 12-bit data 01010 = 11-bit data 01001 = 10-bit data 01000 = 9-bit data 00111 = 8-bit data 00110 = 7-bit data 00101 = 6-bit data 00100 = 5-bit data 00011 = 4-bit data 00010 = 3-bit data 00001 = 2-bit data 00000 = See MODE<32,16> bits in SPIxCON1L<11:10> Note 1: 2: x = Bit is unknown These bits are effective when AUDEN = 0 only. Varying the length by changing these bits does not affect the depth of the TX/RX FIFO. 2013-2015 Microchip Technology Inc. DS30005009C-page 235 PIC24FJ128GB204 FAMILY REGISTER 16-4: SPIxSTATL: SPIx STATUS REGISTER LOW U-0 U-0 U-0 R/C-0, HS R-0, HSC U-0 U-0 R-0, HSC -- -- -- FRMERR SPIBUSY -- -- SPITUR(1) bit 15 bit 8 R-0, HSC R/C-0, HS R-1, HSC U-0 R-1, HSC U-0 R-0, HSC R-0, HSC SRMT SPIROV SPIRBE -- SPITBE -- SPITBF SPIRBF bit 7 bit 0 Legend: C = Clearable bit HSC = Hardware Settable/Clearable bit R = Readable bit x = Bit is unknown U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared HS = Hardware Settable bit bit 15-13 Unimplemented: Read as `0' bit 12 FRMERR: SPIx Frame Error Status bit 1 = Frame error is detected 0 = No frame error is detected bit 11 SPIBUSY: SPIx Activity Status bit 1 = Module is currently busy with some transactions 0 = No ongoing transactions (at time of read) bit 10-9 Unimplemented: Read as `0' bit 8 SPITUR: SPIx Transmit Underrun (TUR) Status bit(1) 1 = Transmit buffer has encountered a Transmit Underrun condition 0 = Transmit buffer does not have a Transmit Underrun condition bit 7 SRMT: Shift Register Empty Status bit 1 = No current or pending transactions (i.e., neither SPIxTXB or SPIxTXSR contains data to transmit) 0 = Current or pending transactions bit 6 SPIROV: SPIx Receive Overflow (ROV) Status bit 1 = A new byte/half-word/word has been completely received when the SPIxRXB was full 0 = No overflow bit 5 SPIRBE: SPIx RX Buffer Empty Status bit 1 = RX buffer is empty 0 = RX buffer is not empty Standard Buffer Mode: Automatically set in hardware when SPIxBUF is read from, reading SPIxRXB. Automatically cleared in hardware when SPIx transfers data from SPIxRXSR to SPIxRXB. Enhanced Buffer Mode: Indicates RXELM<5:0> = 6'b000000. bit 4 Unimplemented: Read as `0' bit 3 SPITBE: SPIx Transmit Buffer Empty Status bit 1 = SPIxTXB is empty 0 = SPIxTXB is not empty Standard Buffer Mode: Automatically set in hardware when SPIx transfers data from SPIxTXB to SPIxTXSR. Automatically cleared in hardware when SPIxBUF is written, loading SPIxTXB. Enhanced Buffer Mode: Indicates TXELM<5:0> = 6'b000000. Note 1: SPITUR is cleared when SPIEN = 0. When IGNTUR = 1, SPITUR provides dynamic status of the underrun condition, but does not stop RX/TX operation and does not need to be cleared by software. DS30005009C-page 236 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 16-4: SPIxSTATL: SPIx STATUS REGISTER LOW (CONTINUED) bit 2 Unimplemented: Read as `0' bit 1 SPITBF: SPIx Transmit Buffer Full Status bit 1 = SPIxTXB is full 0 = SPIxTXB not full Standard Buffer Mode: Automatically set in hardware when SPIxBUF is written, loading SPIxTXB. Automatically cleared in hardware when SPIx transfers data from SPIxTXB to SPIxTXSR. Enhanced Buffer Mode: Indicates TXELM<5:0> = 6'b111111. bit 0 SPIRBF: SPIx Receive Buffer Full Status bit 1 = SPIxRXB is full 0 = SPIxRXB is not full Standard Buffer Mode: Automatically set in hardware when SPIx transfers data from SPIxRXSR to SPIxRXB. Automatically cleared in hardware when SPIxBUF is read from, reading SPIxRXB. Enhanced Buffer Mode: Indicates RXELM<5:0> = 6'b111111. Note 1: SPITUR is cleared when SPIEN = 0. When IGNTUR = 1, SPITUR provides dynamic status of the underrun condition, but does not stop RX/TX operation and does not need to be cleared by software. 2013-2015 Microchip Technology Inc. DS30005009C-page 237 PIC24FJ128GB204 FAMILY REGISTER 16-5: SPIxSTATH: SPIx STATUS REGISTER HIGH U-0 U-0 R-0, HSC R-0, HSC R-0, HSC R-0, HSC R-0, HSC R-0, HSC -- -- RXELM5(3) RXELM4(2) RXELM3(1) RXELM2 RXELM1 RXELM0 bit 15 bit 8 U-0 U-0 R-0, HSC R-0, HSC R-0, HSC R-0, HSC R-0, HSC R-0, HSC -- -- TXELM5(3) TXELM4(2) TXELM3(1) TXELM2 TXELM1 TXELM0 bit 7 bit 0 Legend: HSC = Hardware Settable/Clearable bit R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-14 Unimplemented: Read as `0' bit 13-8 RXELM<5:0>: Receive Buffer Element Count bits (valid in Enhanced Buffer mode)(1,2,3) bit 7-6 Unimplemented: Read as `0' bit 5-0 TXELM<5:0>: Transmit Buffer Element Count bits (valid in Enhanced Buffer mode)(1,2,3) Note 1: 2: 3: RXELM3 and TXELM3 bits are only present when FIFODEPTH = 8 or higher. RXELM4 and TXELM4 bits are only present when FIFODEPTH = 16 or higher. RXELM5 and TXELM5 bits are only present when FIFODEPTH = 32. DS30005009C-page 238 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 16-6: SPIxIMSKL: SPIx INTERRUPT MASK REGISTER LOW U-0 U-0 U-0 R/W-0 R/W-0 U-0 U-0 R/W-0 -- -- -- FRMERREN BUSYEN -- -- SPITUREN bit 15 bit 8 R/W-0 R/W-0 R/W-0 U-0 R/W-0 U-0 R/W-0 R/W-0 SRMTEN SPIROVEN SPIRBEN -- SPITBEN -- SPITBFEN SPIRBFEN bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-13 Unimplemented: Read as `0' bit 12 FRMERREN: Enable Interrupt Events via FRMERR bit 1 = Frame error generates an interrupt event 0 = Frame error does not generate an interrupt event bit 11 BUSYEN: Enable Interrupt Events via SPIBUSY bit 1 = SPIBUSY generates an interrupt event 0 = SPIBUSY does not generate an interrupt event bit 10-9 Unimplemented: Read as `0' bit 8 SPITUREN: Enable Interrupt Events via SPITUR bit 1 = Transmit Underrun (TUR) generates an interrupt event 0 = Transmit Underrun does not generate an interrupt event bit 7 SRMTEN: Enable Interrupt Events via SRMT bit 1 = Shift Register Empty (SRMT) generates an interrupt events 0 = Shift Register Empty does not generate an interrupt events bit 6 SPIROVEN: Enable Interrupt Events via SPIROV bit 1 = SPIx receive overflow generates an interrupt event 0 = SPIx receive overflow does not generate an interrupt event bit 5 SPIRBEN: Enable Interrupt Events via SPIRBE bit 1 = SPIx RX buffer empty generates an interrupt event 0 = SPIx RX buffer empty does not generate an interrupt event bit 4 Unimplemented: Read as `0' bit 3 SPITBEN: Enable Interrupt Events via SPITBE bit 1 = SPIx transmit buffer empty generates an interrupt event 0 = SPIx transmit buffer empty does not generate an interrupt event bit 2 Unimplemented: Read as `0' bit 1 SPITBFEN: Enable Interrupt Events via SPITBF bit 1 = SPIx transmit buffer full generates an interrupt event 0 = SPIx transmit buffer full does not generate an interrupt event bit 0 SPIRBFEN: Enable Interrupt Events via SPIRBF bit 1 = SPIx receive buffer full generates an interrupt event 0 = SPIx receive buffer full does not generate an interrupt event 2013-2015 Microchip Technology Inc. x = Bit is unknown DS30005009C-page 239 PIC24FJ128GB204 FAMILY REGISTER 16-7: SPIxIMSKH: SPIx INTERRUPT MASK REGISTER HIGH R/W-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 RXWIEN -- RXMSK5(1) RXMSK4(1,4) RXMSK3(1,3) RXMSK2(1,2) RXMSK1(1) RXMSK0(1) bit 15 bit 8 R/W-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 TXWIEN -- TXMSK5(1) TXMSK4(1,4) TXMSK3(1,3) TXMSK2(1,2) TXMSK1(1) TXMSK0(1) bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15 RXWIEN: Receive Watermark Interrupt Enable bit 1 = Triggers receive buffer element watermark interrupt when RXMSK<5:0> RXELM<5:0> 0 = Disables receive buffer element watermark interrupt bit 14 Unimplemented: Read as `0' bit 13-8 RXMSK<5:0>: RX Buffer Mask bits(1,2,3,4) RX mask bits; used in conjunction with the RXWIEN bit. bit 7 TXWIEN: Transmit Watermark Interrupt Enable bit 1 = Triggers transmit buffer element watermark interrupt when TXMSK<5:0> = TXELM<5:0> 0 = Disables transmit buffer element watermark interrupt bit 6 Unimplemented: Read as `0' bit 5-0 TXMSK<5:0>: TX Buffer Mask bits(1,2,3,4) TX mask bits; used in conjunction with the TXWIEN bit. Note 1: 2: 3: 4: Mask values higher than FIFODEPTH are not valid. The module will not trigger a match for any value in this case. RXMSK2 and TXMSK2 bits are only present when FIFODEPTH = 8 or higher. RXMSK3 and TXMSK3 bits are only present when FIFODEPTH = 16 or higher. RXMSK4 and TXMSK4 bits are only present when FIFODEPTH = 32. DS30005009C-page 240 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY FIGURE 16-3: SPIx MASTER/SLAVE CONNECTION (STANDARD MODE) Processor 1 (SPIx Master) Processor 2 (SPIx Slave) SDOx SDIx Serial Transmit Buffer (SPIxTXB)(2) Serial Receive Buffer (SPIxRXB)(2) Shift Register (SPIxRXSR) LSb MSb SDIx SDOx SDOx SDIx Shift Register (SPIxTXSR) MSb Shift Register (SPIxRXSR) Shift Register (SPIxTXSR) MSb LSb MSb LSb Serial Transmit Buffer (SPIxTXB)(2) SCKx Serial Clock SCKx LSb Serial Receive Buffer (SPIxRXB)(2) SSx(1) SPIx Buffer (SPIxBUF)(2) SPIx Buffer (SPIxBUF)(2) MSTEN (SPIxCON1L<5>) = 1 Note 1: 2: MSSEN (SPIxCON1H<4>) = 1 and MSTEN (SPIxCON1L<5>) = 0 Using the SSx pin in Slave mode of operation is optional. User must write transmit data to read the received data from SPIxBUF. The SPIxTXB and SPIxRXB registers are memory-mapped to SPIxBUF. 2013-2015 Microchip Technology Inc. DS30005009C-page 241 PIC24FJ128GB204 FAMILY FIGURE 16-4: SPIx MASTER/SLAVE CONNECTION (ENHANCED BUFFER MODES) Processor 1 (SPIx Master) Processor 2 (SPIx Slave) SDOx SDIx Serial Transmit FIFO (SPIxTXB)(2) Serial Receive FIFO (SPIxRXB)(2) Shift Register (SPIxRXSR) LSb MSb SDIx SDOx SDOx SDIx Shift Register (SPIxTXSR) MSb Shift Register (SPIxRXSR) Shift Register (SPIxTXSR) MSb LSb MSb LSb Serial Transmit FIFO (SPIxTXB)(2) SCKx Serial Clock SCKx LSb Serial Receive FIFO (SPIxRXB)(2) SSx(1) SPIx Buffer (SPIxBUF)(2) SPIx Buffer (SPIxBUF)(2) MSTEN (SPIxCON1L<5>) = 1 Note 1: 2: MSSEN (SPIxCON1H<4>) = 1 and MSTEN (SPIxCON1L<5>) = 0 Using the SSx pin in Slave mode of operation is optional. User must write transmit data to read the received data from SPIxBUF. The SPIxTXB and SPIxRXB registers are memory-mapped to SPIxBUF. FIGURE 16-5: SPIx MASTER, FRAME MASTER CONNECTION DIAGRAM PIC24F (SPIx Master, Frame Master) Processor 2 SDOx SDIx SDIx SCKx SSx DS30005009C-page 242 SDOx Serial Clock Frame Sync Pulse SCKx SSx 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY FIGURE 16-6: SPIx MASTER, FRAME SLAVE CONNECTION DIAGRAM PIC24F SPIx Master, Frame Slave) SDOx SDIx SDIx SDOx SCKx SSx FIGURE 16-7: Processor 2 Serial Clock Frame Sync Pulse SCKx SSx SPIx SLAVE, FRAME MASTER CONNECTION DIAGRAM Processor 2 PIC24F (SPIx Slave, Frame Master) SDOx SDIx SDIx SDOx SCKx SSx FIGURE 16-8: Serial Clock Frame Sync. Pulse SCKx SSx SPIx SLAVE, FRAME SLAVE CONNECTION DIAGRAM Processor 2 PIC24F (SPIx Slave, Frame Slave) SDIx SDOx SDOx SDIx SCKx SSx EQUATION 16-1: Serial Clock Frame Sync Pulse SCKx SSx RELATIONSHIP BETWEEN DEVICE AND SPIx CLOCK SPEED Baud Rate = FPB (2 * (SPIxBRG + 1)) Where: FPB is the Peripheral Bus Clock Frequency. 2013-2015 Microchip Technology Inc. DS30005009C-page 243 PIC24FJ128GB204 FAMILY NOTES: DS30005009C-page 244 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 17.0 Note: INTER-INTEGRATED CIRCUITTM (I2CTM) This data sheet summarizes the features of this group of PIC24F devices. It is not intended to be a comprehensive reference source. For more information, refer to the "dsPIC33/PIC24 Family Reference Manual", "Inter-Integrated CircuitTM (I2CTM)" (DS70000195). The information in this data sheet supersedes the information in the FRM. The Inter-Integrated CircuitTM (I2CTM) module is a serial interface useful for communicating with other peripheral or microcontroller devices. These peripheral devices may be serial EEPROMs, display drivers, A/D Converters, etc. 17.1 The details of sending a message in Master mode depends on the communication protocols for the device being communicated with. Typically, the sequence of events is as follows: 1. 2. 3. 4. 5. 6. The I2C module supports these features: * * * * * * * * * Independent master and slave logic 7-bit and 10-bit device addresses General call address as defined in the I2C protocol Clock stretching to provide delays for the processor to respond to a slave data request Both 100 kHz and 400 kHz bus specifications Configurable address masking Multi-Master modes to prevent loss of messages in arbitration Bus Repeater mode, allowing the acceptance of all messages as a slave regardless of the address Automatic SCL Communicating as a Master in a Single Master Environment 7. 8. 9. 10. 11. 12. 13. Assert a Start condition on SDAx and SCLx. Send the I 2C device address byte to the slave with a write indication. Wait for and verify an Acknowledge from the slave. Send the first data byte (sometimes known as the command) to the slave. Wait for and verify an Acknowledge from the slave. Send the serial memory address low byte to the slave. Repeat Steps 4 and 5 until all data bytes are sent. Assert a Repeated Start condition on SDAx and SCLx. Send the device address byte to the slave with a read indication. Wait for and verify an Acknowledge from the slave. Enable master reception to receive serial memory data. Generate an ACK or NACK condition at the end of a received byte of data. Generate a Stop condition on SDAx and SCLx. A block diagram of the module is shown in Figure 17-1. 2013-2015 Microchip Technology Inc. DS30005009C-page 245 PIC24FJ128GB204 FAMILY FIGURE 17-1: I2CTM BLOCK DIAGRAM Internal Data Bus I2CxRCV SCLx Read Shift Clock I2CxRSR LSB SDAx Address Match Match Detect Write I2CxMSK Write Read I2CxADD Read Write Start and Stop Bit Detect I2CxSTAT Start and Stop Bit Generation Control Logic Read Collision Detect Write I2CxCONH Read Write Acknowledge Generation I2CxCONL Clock Stretching Write Read I2CxTRN LSB Read Shift Clock Reload Control BRG Down Counter Write I2CxBRG Read TCY DS30005009C-page 246 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 17.2 Setting Baud Rate When Operating as a Bus Master 17.3 To compute the Baud Rate Generator reload value, use Equation 17-1. EQUATION 17-1: I2CxBRG = COMPUTING BAUD RATE RELOAD VALUE(1) (( F 1 SCL ) - PGDX ) FCY -2 2 Note 1: Based on FCY = FOSC/2; Doze mode and PLL are disabled. TABLE 17-1: Slave Address The I2CxMSK register (Register 17-4) designates address bit positions as "don't care" for both 7-Bit and 10-Bit Addressing modes. Setting a particular bit location (= 1) in the I2CxMSK register causes the slave module to respond, whether the corresponding address bit value is a `0' or a `1'. For example, when I2CxMSK is set to `0010000000', the slave module will detect both addresses, `0000000000' and `0010000000'. To enable address masking, the Intelligent Peripheral Management Interface (IPMI) must be disabled by clearing the STRICT bit (I2CxCONL<11>). Note: As a result of changes in the I2CTM protocol, the addresses in Table 17-1 are reserved and will not be Acknowledged in Slave mode. This includes any address mask settings that include any of these addresses. I2CTM RESERVED ADDRESSES(1) R/W Bit Description Address(2) 0000 000 0 General Call 0000 000 1 Start Byte 0000 001 x Cbus Address 0000 01x x Reserved 0000 1xx x HS Mode Master Code 1111 0xx x 10-Bit Slave Upper Byte(3) 1111 1xx x Reserved Note 1: 2: 3: Slave Address Masking The address bits listed here will never cause an address match independent of address mask settings. The address will be Acknowledged only if GCEN = 1. A match on this address can only occur on the upper byte in 10-Bit Addressing mode. 2013-2015 Microchip Technology Inc. DS30005009C-page 247 PIC24FJ128GB204 FAMILY REGISTER 17-1: R/W-0 I2CxCONL: I2Cx CONTROL REGISTER LOW U-0 I2CEN -- R/W-0, HC I2CSIDL R/W-1 (1) SCLREL R/W-0 R/W-0 R/W-0 R/W-0 STRICT A10M DISSLW SMEN bit 15 bit 8 R/W-0 R/W-0 R/W-0 R/W-0, HC R/W-0, HC R/W-0, HC R/W-0, HC R/W-0, HC GCEN STREN ACKDT ACKEN RCEN PEN RSEN SEN bit 7 bit 0 Legend: HC = Hardware Clearable bit R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15 I2CEN: I2Cx Enable bit (writable from SW only) 1 = Enables the I2CTM module, and configures the SDAx and SCLx pins as serial port pins 0 = Disables I2C module; all I2C pins are controlled by port functions bit 14 Unimplemented: Read as `0' bit 13 I2CSIDL: I2Cx Stop in Idle Mode bit 1 = Discontinues module operation when device enters Idle mode 0 = Continues module operation in Idle mode bit 12 SCLREL: SCLx Release Control bit (I2C Slave mode only)(1) Module resets and (I2CEN = 0) sets SCLREL = 1. If STREN = 0:(2) 1 = Releases clock 0 = Forces clock low (clock stretch) If STREN = 1: 1 = Releases clock 0 = Holds clock low (clock stretch); user may program this bit to `0', clock stretch is at the next SCLx low bit 11 STRICT: I2Cx Strict Reserved Address Rule Enable bit 1 = Strict reserved addressing is enforced; for reserved addresses, refer to Table 17-1 (In Slave Mode) - The device doesn't respond to reserved address space and addresses falling in that category are NACKed. (In Master Mode) - The device is allowed to generate addresses with reserved address space. 0 = Reserved addressing would be Acknowledged (In Slave Mode) - The device will respond to an address falling in the reserved address space. When there is a match with any of the reserved addresses, the device will generate an ACK. (In Master Mode) - Reserved. bit 10 A10M: 10-Bit Slave Address Flag bit 1 = I2CxADD is a 10-bit slave address 0 = I2CADD is a 7-bit slave address bit 9 DISSLW: Slew Rate Control Disable bit 1 = Slew rate control is disabled for Standard Speed mode (100 kHz, also disabled for 1 MHz mode) 0 = Slew rate control is enabled for High-Speed mode (400 kHz) bit 8 SMEN: SMBus Input Levels Enable bit 1 = Enables input logic so thresholds are compliant with the SMBus specification 0 = Disables SMBus-specific inputs Note 1: 2: Automatically cleared to `0' at the beginning of slave transmission; automatically cleared to `0' at the end of slave reception. Automatically cleared to `0' at the beginning of slave transmission. DS30005009C-page 248 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 17-1: I2CxCONL: I2Cx CONTROL REGISTER LOW (CONTINUED) bit 7 GCEN: General Call Enable bit (I2C Slave mode only) 1 = Enables interrupt when a general call address is received in I2CxRSR; module is enabled for reception 0 = General call address is disabled bit 6 STREN: SCLx Clock Stretch Enable bit In I2C Slave mode only; used in conjunction with the SCLREL bit. 1 = Enables clock stretching 0 = Disables clock stretching bit 5 ACKDT: Acknowledge Data bit In I2C Master mode, during Master Receive mode - The value that will be transmitted when the user initiates an Acknowledge sequence at the end of a receive. In I2C Slave mode when AHEN = 1 or DHEN = 1 - The value that the slave will transmit when it initiates an Acknowledge sequence at the end of an address or data reception. 1 = A NACK is sent 0 = An ACK is sent bit 4 ACKEN: Acknowledge Sequence Enable bit In I2C Master mode only; applicable during Master Receive mode. 1 = Initiates Acknowledge sequence on SDAx and SCLx pins, and transmits ACKDT data bit 0 = Acknowledge sequence is Idle bit 3 RCEN: Receive Enable bit (I2C Master mode only) 1 = Enables Receive mode for I2C, automatically cleared by hardware at the end of the 8-bit receive data byte 0 = Receive sequence is not in progress bit 2 PEN: Stop Condition Enable bit (I2C Master mode only) 1 = Initiates Stop condition on the SDAx and SCLx pins 0 = Stop condition is Idle bit 1 RSEN: Restart Condition Enable bit (I2C Master mode only) 1 = Initiates Restart condition on the SDAx and SCLx pins 0 = Restart condition is Idle bit 0 SEN: Start Condition Enable bit (I2C Master mode only) 1 = Initiates Start condition on the SDAx and SCLx pins 0 = Start condition is Idle Note 1: 2: Automatically cleared to `0' at the beginning of slave transmission; automatically cleared to `0' at the end of slave reception. Automatically cleared to `0' at the beginning of slave transmission. 2013-2015 Microchip Technology Inc. DS30005009C-page 249 PIC24FJ128GB204 FAMILY REGISTER 17-2: I2CxCONH: I2Cx CONTROL REGISTER HIGH U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 15 bit 8 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 -- PCIE SCIE BOEN SDAHT SBCDE AHEN DHEN bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-7 Unimplemented: Read as `0' bit 6 PCIE: Stop Condition Interrupt Enable bit (I2CTM Slave mode only). 1 = Enables interrupt on detection of Stop condition 0 = Stop detection interrupts are disabled bit 5 SCIE: Start Condition Interrupt Enable bit (I2C Slave mode only) 1 = Enables interrupt on detection of Start or Restart conditions 0 = Start detection interrupts are disabled bit 4 BOEN: Buffer Overwrite Enable bit (I2C Slave mode only) 1 = I2CxRCV is updated and an ACK is generated for a received address/data byte, ignoring the state of the I2COV bit only if the RBF bit = 0 0 = I2CxRCV is only updated when I2COV is clear bit 3 SDAHT: SDAx Hold Time Selection bit 1 = Minimum of 300 ns hold time on SDAx after the falling edge of SCLx 0 = Minimum of 100 ns hold time on SDAx after the falling edge of SCLx bit 2 SBCDE: Slave Mode Bus Collision Detect Enable bit (I2C Slave mode only) If, on the rising edge of SCLx, SDAx is sampled low when the module is outputting a high state, the BCL bit is set and the bus goes Idle. This Detection mode is only valid during data and ACK transmit sequences. 1 = Enables slave bus collision interrupts 0 = Slave bus collision interrupts are disabled bit 1 AHEN: Address Hold Enable bit (I2C Slave mode only) 1 = Following the 8th falling edge of SCLx for a matching received address byte; SCLREL bit (I2CxCONL<12>) will be cleared and SCLx will be held low 0 = Address holding is disabled bit 0 DHEN: Data Hold Enable bit (I2C Slave mode only) 1 = Following the 8th falling edge of SCLx for a received data byte; slave hardware clears the SCLREL bit (I2CxCONL<12>) and SCLx is held low 0 = Data holding is disabled DS30005009C-page 250 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 17-3: I2CxSTAT: I2Cx STATUS REGISTER R-0, HSC R-0, HSC R-0, HSC U-0 U-0 R/C-0, HSC R-0, HSC R-0, HSC ACKSTAT TRSTAT ACKTIM -- -- BCL GCSTAT ADD10 bit 15 R/C-0, HS bit 8 R/C-0, HS IWCOL I2COV R-0, HSC R/C-0, HSC R/C-0, HSC R-0, HSC R-0, HSC R-0, HSC D/A P S R/W RBF TBF bit 7 bit 0 Legend: C = Clearable bit HSC = Hardware Settable/Clearable bit R = Readable bit HS = Hardware Settable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15 ACKSTAT: Acknowledge Status bit (updated in all Master and Slave modes) 1 = Acknowledge was not received from slave 0 = Acknowledge was received from slave bit 14 TRSTAT: Transmit Status bit (when operating as I2CTM master; applicable to master transmit operation) 1 = Master transmit is in progress (8 bits + ACK) 0 = Master transmit is not in progress bit 13 ACKTIM: Acknowledge Time Status bit (valid in I2C Slave mode only) 1 = Indicates I2C bus is in an Acknowledge sequence, set on 8th falling edge of SCLx clock 0 = Not an Acknowledge sequence, cleared on 9th rising edge of SCLx clock bit 12-11 Unimplemented: Read as `0' bit 10 BCL: Bus Collision Detect bit (Master/Slave mode; cleared when I2C module is disabled, I2CEN = 0) 1 = A bus collision has been detected during a master or slave transmit operation 0 = No bus collision has been detected bit 9 GCSTAT: General Call Status bit (cleared after Stop detection) 1 = General call address was received 0 = General call address was not received bit 8 ADD10: 10-Bit Address Status bit (cleared after Stop detection) 1 = 10-bit address was matched 0 = 10-bit address was not matched bit 7 IWCOL: I2Cx Write Collision Detect bit 1 = An attempt to write to the I2CxTRN register failed because the I2C module is busy; must be cleared in software 0 = No collision bit 6 I2COV: I2Cx Receive Overflow Flag bit 1 = A byte was received while the I2CxRCV register is still holding the previous byte; I2COV is a "don't care" in Transmit mode, must be cleared in software 0 = No overflow bit 5 D/A: Data/Address bit (when operating as I2C slave) 1 = Indicates that the last byte received was data 0 = Indicates that the last byte received or transmitted was an address bit 4 P: I2Cx Stop bit Updated when Start, Reset or Stop is detected; cleared when the I2C module is disabled, I2CEN = 0. 1 = Indicates that a Stop bit has been detected last 0 = Stop bit was not detected last 2013-2015 Microchip Technology Inc. DS30005009C-page 251 PIC24FJ128GB204 FAMILY REGISTER 17-3: I2CxSTAT: I2Cx STATUS REGISTER (CONTINUED) bit 3 S: I2Cx Start bit Updated when Start, Reset or Stop is detected; cleared when the I2C module is disabled, I2CEN = 0. 1 = Indicates that a Start (or Repeated Start) bit has been detected last 0 = Start bit was not detected last bit 2 R/W: Read/Write Information bit (when operating as I2C slave) 1 = Read: Indicates the data transfer is output from the slave 0 = Write: Indicates the data transfer is input to the slave bit 1 RBF: Receive Buffer Full Status bit 1 = Receive is complete, I2CxRCV is full 0 = Receive is not complete, I2CxRCV is empty bit 0 TBF: Transmit Buffer Full Status bit 1 = Transmit is in progress, I2CxTRN is full (8 bits of data) 0 = Transmit is complete, I2CxTRN is empty REGISTER 17-4: I2CxMSK: I2Cx SLAVE MODE ADDRESS MASK REGISTER U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- R/W-0 R/W-0 MSK<9:8> bit 15 bit 8 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 MSK<7:0> bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-10 Unimplemented: Read as `0' bit 9-0 MSK<9:0>: I2Cx Mask for Address Bit x Select bits 1 = Enables masking for bit x of the incoming message address; bit match is not required in this position 0 = Disables masking for bit x; bit match is required in this position DS30005009C-page 252 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 18.0 Note: UNIVERSAL ASYNCHRONOUS RECEIVER TRANSMITTER (UART) This data sheet summarizes the features of this group of PIC24F devices. It is not intended to be a comprehensive reference source. For more information, refer to the "dsPIC33/PIC24 Family Reference Manual", "Universal Asynchronous Receiver Transmitter (UART)" (DS70000582). The information in this data sheet supersedes the information in the FRM. The Universal Asynchronous Receiver Transmitter (UART) module is one of the serial I/O modules available in the PIC24F device family. The UART is a full-duplex, asynchronous system that can communicate with peripheral devices, such as personal computers, LIN/J2602, RS-232 and RS-485 interfaces. The module also supports a hardware flow control option with the UxCTS and UxRTS pins. The UART module includes the ISO 7816 compliant Smart Card support and the IrDA(R) encoder/decoder unit. The PIC24FJ128GB204 family devices are equipped with four UART modules, referred to as UART1, UART2, UART3 and UART4. The primary features of the UARTx modules are: * Full-Duplex, 8 or 9-Bit Data Transmission through the UxTX and UxRX Pins * Even, Odd or No Parity Options (for 8-bit data) * One or Two Stop bits * Hardware Flow Control Option with the UxCTS and UxRTS Pins * Fully Integrated Baud Rate Generator with 16-Bit Prescaler * Baud Rates Range from 15 bps to 1 Mbps at 16 MIPS in 16x mode 2013-2015 Microchip Technology Inc. * Baud Rates Range from 61 bps to 4 Mbps at 16 MIPS in 4x mode * 4-Deep, First-In-First-Out (FIFO) Transmit Data Buffer * 4-Deep FIFO Receive Data Buffer * Parity, Framing and Buffer Overrun Error Detection * Support for 9-Bit mode with Address Detect (9th bit = 1) * Separate Transmit and Receive Interrupts * Loopback mode for Diagnostic Support * Polarity Control for Transmit and Receive Lines * Support for Sync and Break Characters * Supports Automatic Baud Rate Detection * IrDA(R) Encoder and Decoder Logic * Includes DMA Support * 16x Baud Clock Output for IrDA Support * Smart Card ISO 7816 Support (UART1 and UART2 only): - T = 0 protocol with automatic error handling - T = 1 protocol - Dedicated Guard Time Counter (GTC) - Dedicated Waiting Time Counter (WTC) A simplified block diagram of the UARTx module is shown in Figure 18-1. The UARTx module consists of these key important hardware elements: * Baud Rate Generator * Asynchronous Transmitter * Asynchronous Receiver Note: Throughout this section, references to register and bit names that may be associated with a specific UART module are referred to generically by the use of `x' in place of the specific module number. Thus, "UxSTA" might refer to the Status register for either UART1, UART2, UART3 or UART4. DS30005009C-page 253 PIC24FJ128GB204 FAMILY FIGURE 18-1: UARTx SIMPLIFIED BLOCK DIAGRAM Baud Rate Generator ISO 7816 Support IrDA(R) Hardware Flow Control UxRTS/BCLKx(1) (1) UxCTS Note 1: 2: UARTx Receiver UxRX (1,2) UARTx Transmitter UxTX (1,2) The UARTx inputs and outputs must all be assigned to available RPn/RPIn pins before use. See Section 11.4 "Peripheral Pin Select (PPS)" for more information. The UxTX and UxRX pins need to be shorted to be used for the Smart Card interface; this should be taken care of by the user. DS30005009C-page 254 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 18.1 UARTx Baud Rate Generator (BRG) The UARTx module includes a dedicated, 16-bit Baud Rate Generator. The UxBRG register controls the period of a free-running, 16-bit timer. Equation 18-1 shows the formula for computation of the baud rate with BRGH = 0. EQUATION 18-1: The maximum baud rate (BRGH = 0) possible is FCY/16 (for UxBRG = 0) and the minimum baud rate possible is FCY/(16 * 65536). Equation 18-2 shows the formula for computation of the baud rate with BRGH = 1. EQUATION 18-2: UARTx BAUD RATE WITH BRGH = 0(1,2) Baud Rate = FCY Baud Rate = 16 * (UxBRG + 1) UxBRG = Note 1: 2: FCY 16 * Baud Rate Example 18-1 shows the calculation of the baud rate error for the following conditions: * FCY = 4 MHz * Desired Baud Rate = 9600 EXAMPLE 18-1: UxBRG = -1 FCY denotes the instruction cycle clock frequency (FOSC/2). Based on FCY = FOSC/2; Doze mode and PLL are disabled. UARTx BAUD RATE WITH BRGH = 1(1,2) Note 1: 2: FCY 4 * (UxBRG + 1) FCY 4 * Baud Rate -1 FCY denotes the instruction cycle clock frequency. Based on FCY = FOSC/2; Doze mode and PLL are disabled. The maximum baud rate (BRGH = 1) possible is FCY/4 (for UxBRG = 0) and the minimum baud rate possible is FCY/(4 * 65536). Writing a new value to the UxBRG register causes the BRG timer to be reset (cleared). This ensures the BRG does not wait for a timer overflow before generating the new baud rate. BAUD RATE ERROR CALCULATION (BRGH = 0)(1) Desired Baud Rate = FCY/(16 (UxBRG + 1)) Solving for UxBRG Value: UxBRG UxBRG UxBRG = ((FCY/Desired Baud Rate)/16) - 1 = ((4000000/9600)/16) - 1 = 25 Calculated Baud Rate = 4000000/(16 (25 + 1)) = 9615 Error Note 1: = (Calculated Baud Rate - Desired Baud Rate) Desired Baud Rate = (9615 - 9600)/9600 = 0.16% Based on FCY = FOSC/2; Doze mode and PLL are disabled. 2013-2015 Microchip Technology Inc. DS30005009C-page 255 PIC24FJ128GB204 FAMILY 18.2 1. 2. 3. 4. 5. 6. Set up the UARTx: a) Write appropriate values for data, parity and Stop bits. b) Write appropriate baud rate value to the UxBRG register. c) Set up transmit and receive interrupt enable and priority bits. Enable the UARTx. Set the UTXEN bit (causes a transmit interrupt, two cycles after being set). Write a data byte to the lower byte of the UxTXREG word. The value will be immediately transferred to the Transmit Shift Register (TSR) and the serial bit stream will start shifting out with the next rising edge of the baud clock. Alternatively, the data byte may be transferred while UTXEN = 0 and then, the user may set UTXEN. This will cause the serial bit stream to begin immediately because the baud clock will start from a cleared state. A transmit interrupt will be generated as per interrupt control bits, UTXISEL<1:0>. 18.3 1. 2. 3. 4. 5. 6. Transmitting in 8-Bit Data Mode Transmitting in 9-Bit Data Mode Set up the UARTx (as described in Section 18.2 "Transmitting in 8-Bit Data Mode"). Enable the UARTx. Set the UTXEN bit (causes a transmit interrupt). Write UxTXREG as a 16-bit value only. A word write to UxTXREG triggers the transfer of the 9-bit data to the TSR. The serial bit stream will start shifting out with the first rising edge of the baud clock. A transmit interrupt will be generated as per the setting of control bits, UTXISEL<1:0>. 18.4 Break and Sync Transmit Sequence The following sequence will send a message frame header, made up of a Break, followed by an auto-baud Sync byte. 1. 2. 3. 4. 5. Configure the UARTx for the desired mode. Set UTXEN and UTXBRK to set up the Break character. Load the UxTXREG with a dummy character to initiate transmission (value is ignored). Write `55h' to UxTXREG; this loads the Sync character into the transmit FIFO. After the Break has been sent, the UTXBRK bit is reset by hardware. The Sync character now transmits. DS30005009C-page 256 18.5 1. 2. 3. 4. 5. 6. Receiving in 8-Bit or 9-Bit Data Mode Set up the UARTx (as described in Section 18.2 "Transmitting in 8-Bit Data Mode"). Enable the UARTx. Set the URXEN bit (UxSTA<12>). A receive interrupt will be generated when one or more data characters have been received as per interrupt control bits, URXISEL<1:0>. Read the OERR bit to determine if an overrun error has occurred. The OERR bit must be reset in software. Read UxRXREG. The act of reading the UxRXREG character will move the next character to the top of the receive FIFO, including a new set of PERR and FERR values. 18.6 Operation of UxCTS and UxRTS Control Pins UARTx Clear-to-Send (UxCTS) and Request-to-Send (UxRTS) are the two hardware controlled pins that are associated with the UARTx modules. These two pins allow the UARTx to operate in Simplex and Flow Control mode. They are implemented to control the transmission and reception between the Data Terminal Equipment (DTE). The UEN<1:0> bits in the UxMODE register configure these pins. 18.7 Infrared Support The UARTx module provides two types of infrared UART support: one is the IrDA clock output to support an external IrDA encoder and decoder device (legacy module support), and the other is the full implementation of the IrDA encoder and decoder. Note that because the IrDA modes require a 16x baud clock, they will only work when the BRGH bit (UxMODE<3>) is `0'. 18.7.1 IrDA CLOCK OUTPUT FOR EXTERNAL IrDA SUPPORT To support external IrDA encoder and decoder devices, the BCLKx pin (same as the UxRTS pin) can be configured to generate the 16x baud clock. With UEN<1:0> = 11, the BCLKx pin will output the 16x baud clock if the UARTx module is enabled. It can be used to support the IrDA codec chip. 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 18.7.2 BUILT-IN IrDA ENCODER AND DECODER The UARTx has full implementation of the IrDA encoder and decoder as part of the UARTx module. The built-in IrDA encoder and decoder functionality is enabled using the IREN bit (UxMODE<12>). When enabled (IREN = 1), the receive pin (UxRX) acts as the input from the infrared receiver. The transmit pin (UxTX) acts as the output to the infrared transmitter. 18.8 Smart Card ISO 7816 Support Figure 18-2 shows a Smart Card subsystem using a PIC24F microcontroller with a UARTx module for Smart Card data communication. VCC to power the Smart Card can be supplied through a terminal or an FIGURE 18-2: external power supply. The terminal is also responsible for clocking and resetting the Smart Card. The TX and RX line of the PIC24F device has to be shorted externally, and then connected to the I/O line of the Smart Card. There are two protocols which are widely used for Smart Card communication between terminal and Smart Card: * T = 0 (asynchronous, half-duplex, byte-oriented protocol) * T = 1 (asynchronous, half-duplex, block-oriented protocol) The selection of the T = 0 or T = 1 protocol is done using the PTRCL bit in the UxSCCON register. SMART CARD SUBSYSTEM CONNECTION TERMINAL SMART CARD PIC24F UART_IRDA7816(2) TX I/O RX REFO CLK RST GPO GPI ATTACHIE(1) VCC GND Note 1: 2: Driven high upon card insertion. Only UART1 and UART2 support Smart Card ISO 7816. 2013-2015 Microchip Technology Inc. DS30005009C-page 257 PIC24FJ128GB204 FAMILY 18.9 Control Registers * UxBRG: UARTx Baud Rate Register * UxSCCON: UARTx Smart Card Control Register (Register 18-5) * UxSCINT: UARTx Smart Card Interrupt Register (Register 18-6) * UxGTC: UARTx Guard Time Counter * UxWTCL and UxWTCH: UARTx Waiting Time Counter Low/High The UART module consists of the following Special Function Registers (SFRs): * UxMODE: UARTx Mode Register (Register 18-1) * UxSTA: UARTx Status and Control Register (Register 18-2) * UxRXREG: UARTx Receive Register * UxTXREG: UARTx Transmit Register (Write-Only) (Register 18-3) * UxADMD: UARTx Address Mask Detect Register (Register 18-4) REGISTER 18-1: UxMODE: UARTx MODE REGISTER R/W-0 U-0 R/W-0 R/W-0 R/W-0 U-0 R/W-0 R/W-0 UARTEN(1) -- USIDL IREN(2) RTSMD -- UEN1 UEN0 bit 15 bit 8 R/W-0, HC R/W-0 R/W-0, HC R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 WAKE LPBACK ABAUD URXINV BRGH PDSEL1 PDSEL0 STSEL bit 7 bit 0 Legend: HC = Hardware Clearable bit R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15 UARTEN: UARTx Enable bit(1) 1 = UARTx is enabled; all UARTx pins are controlled by UARTx as defined by UEN<1:0> 0 = UARTx is disabled; all UARTx pins are controlled by port latches, UARTx power consumption is minimal bit 14 Unimplemented: Read as `0' bit 13 USIDL: UARTx Stop in Idle Mode bit 1 = Discontinues module operation when device enters Idle mode 0 = Continues module operation in Idle mode bit 12 IREN: IrDA(R) Encoder and Decoder Enable bit(2) 1 = IrDA encoder and decoder are enabled 0 = IrDA encoder and decoder are disabled bit 11 RTSMD: Mode Selection for UxRTS Pin bit 1 = UxRTS pin is in Simplex mode 0 = UxRTS pin is in Flow Control mode bit 10 Unimplemented: Read as `0' bit 9-8 UEN<1:0>: UARTx Enable bits 11 = UxTX, UxRX and BCLKx pins are enabled and used; UxCTS pin is controlled by port latches 10 = UxTX, UxRX, UxCTS and UxRTS pins are enabled and used 01 = UxTX, UxRX and UxRTS pins are enabled and used; UxCTS pin is controlled by port latches 00 = UxTX and UxRX pins are enabled and used; UxCTS and UxRTS/BCLKx pins are controlled by port latches Note 1: 2: If UARTEN = 1, the peripheral inputs and outputs must be configured to an available RPn/RPIn pin. For more information, see Section 11.4 "Peripheral Pin Select (PPS)". This feature is only available for 16x BRG mode (BRGH = 0). DS30005009C-page 258 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 18-1: UxMODE: UARTx MODE REGISTER (CONTINUED) bit 7 WAKE: Wake-up on Start Bit Detect During Sleep Mode Enable bit 1 = UARTx will continue to sample the UxRX pin; interrupt is generated on the falling edge, bit is cleared in hardware on the following rising edge 0 = No wake-up is enabled bit 6 LPBACK: UARTx Loopback Mode Select bit 1 = Enables Loopback mode 0 = Loopback mode is disabled bit 5 ABAUD: Auto-Baud Enable bit 1 = Enables baud rate measurement on the next character - requires reception of a Sync field (55h); cleared in hardware upon completion 0 = Baud rate measurement is disabled or has completed bit 4 URXINV: UARTx Receive Polarity Inversion bit 1 = UxRX Idle state is `0' 0 = UxRX Idle state is `1' bit 3 BRGH: High Baud Rate Enable bit 1 = High-Speed mode (4 BRG clock cycles per bit) 0 = Standard Speed mode (16 BRG clock cycles per bit) bit 2-1 PDSEL<1:0>: Parity and Data Selection bits 11 = 9-bit data, no parity 10 = 8-bit data, odd parity 01 = 8-bit data, even parity 00 = 8-bit data, no parity bit 0 STSEL: Stop Bit Selection bit 1 = Two Stop bits 0 = One Stop bit Note 1: 2: If UARTEN = 1, the peripheral inputs and outputs must be configured to an available RPn/RPIn pin. For more information, see Section 11.4 "Peripheral Pin Select (PPS)". This feature is only available for 16x BRG mode (BRGH = 0). 2013-2015 Microchip Technology Inc. DS30005009C-page 259 PIC24FJ128GB204 FAMILY REGISTER 18-2: UxSTA: UARTx STATUS AND CONTROL REGISTER R/W-0 R/W-0 R/W-0 R/W-0 R/W-0, HC R/W-0 R-0, HSC R-1, HSC UTXISEL1 UTXINV(1) UTXISEL0 URXEN UTXBRK UTXEN(2) UTXBF TRMT bit 15 bit 8 R/W-0 R/W-0 R/W-0 R-1, HSC R-0, HSC R-0, HSC R/C-0, HS R-0, HSC URXISEL1 URXISEL0 ADDEN RIDLE PERR FERR OERR URXDA bit 7 bit 0 Legend: C = Clearable bit HSC = Hardware Settable/Clearable bit R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared HS = Hardware Settable bit HC = Hardware Clearable bit x = Bit is unknown bit 15,13 UTXISEL<1:0>: UARTx Transmission Interrupt Mode Selection bits 11 = Reserved; do not use 10 = Interrupt when a character is transferred to the Transmit Shift Register (TSR), and as a result, the transmit buffer becomes empty 01 = Interrupt when the last character is shifted out of the Transmit Shift Register; all transmit operations are completed 00 = Interrupt when a character is transferred to the Transmit Shift Register (this implies there is at least one character open in the transmit buffer) bit 14 UTXINV: IrDA(R) Encoder Transmit Polarity Inversion bit(1) IREN = 0: 1 = UxTX is Idle (`0') 0 = UxTX is Idle (`1') IREN = 1: 1 = UxTX is Idle (`1') 0 = UxTX is Idle (`0') bit 12 URXEN: UARTx Receive Enable bit 1 = Receive is enabled, UxRX pin is controlled by UARTx 0 = Receive is disabled, UxRX pin is controlled by the port bit 11 UTXBRK: UARTx Transmit Break bit 1 = Sends Sync Break on next transmission - Start bit, followed by twelve `0' bits, followed by Stop bit; cleared by hardware upon completion 0 = Sync Break transmission is disabled or has completed bit 10 UTXEN: UARTx Transmit Enable bit(2) 1 = Transmit is enabled, UxTX pin is controlled by UARTx 0 = Transmit is disabled, any pending transmission is aborted and the buffer is reset; UxTX pin is controlled by the port bit 9 UTXBF: UARTx Transmit Buffer Full Status bit (read-only) 1 = Transmit buffer is full 0 = Transmit buffer is not full, at least one more character can be written bit 8 TRMT: Transmit Shift Register Empty bit (read-only) 1 = Transmit Shift Register is empty and transmit buffer is empty (the last transmission has completed) 0 = Transmit Shift Register is not empty, a transmission is in progress or queued Note 1: 2: The value of this bit only affects the transmit properties of the module when the IrDA(R) encoder is enabled (IREN = 1). If UARTEN = 1, the peripheral inputs and outputs must be configured to an available RPn/RPIn pin. For more information, see Section 11.4 "Peripheral Pin Select (PPS)". DS30005009C-page 260 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 18-2: UxSTA: UARTx STATUS AND CONTROL REGISTER (CONTINUED) bit 7-6 URXISEL<1:0>: UARTx Receive Interrupt Mode Selection bits 11 = Interrupt is set on an RSR transfer, making the receive buffer full (i.e., has 4 data characters) 10 = Interrupt is set on an RSR transfer, making the receive buffer 3/4 full (i.e., has 3 data characters) 0x = Interrupt is set when any character is received and transferred from the RSR to the receive buffer; receive buffer has one or more characters bit 5 ADDEN: Address Character Detect bit (bit 8 of received data = 1) 1 = Address Detect mode is enabled (if 9-bit mode is not selected, this does not take effect) 0 = Address Detect mode is disabled bit 4 RIDLE: Receiver Idle bit (read-only) 1 = Receiver is Idle 0 = Receiver is active bit 3 PERR: Parity Error Status bit (read-only) 1 = Parity error has been detected for the current character (the character at the top of the receive FIFO) 0 = Parity error has not been detected bit 2 FERR: Framing Error Status bit (read-only) 1 = Framing error has been detected for the current character (the character at the top of the receive FIFO) 0 = Framing error has not been detected bit 1 OERR: Receive Buffer Overrun Error Status bit (clear/read-only) 1 = Receive buffer has overflowed 0 = Receive buffer has not overflowed (clearing a previously set OERR bit (1 0 transition); will reset the receive buffer and the RSR to the empty state) bit 0 URXDA: UARTx Receive Buffer Data Available bit (read-only) 1 = Receive buffer has data, at least one more character can be read 0 = Receive buffer is empty Note 1: 2: The value of this bit only affects the transmit properties of the module when the IrDA(R) encoder is enabled (IREN = 1). If UARTEN = 1, the peripheral inputs and outputs must be configured to an available RPn/RPIn pin. For more information, see Section 11.4 "Peripheral Pin Select (PPS)". 2013-2015 Microchip Technology Inc. DS30005009C-page 261 PIC24FJ128GB204 FAMILY REGISTER 18-3: UxTXREG: UARTx TRANSMIT REGISTER (NORMALLY WRITE-ONLY) W-x U-0 U-0 U-0 U-0 U-0 U-0 W-x LAST(1) -- -- -- -- -- -- UxTXREG8 bit 15 bit 8 W-x W-x W-x W-x W-x W-x W-x W-x UxTXREG<7:0> bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15 LAST: Last Byte Indicator for Smart Card Support bit(1) bit 14-9 Unimplemented: Read as `0' bit 8 UxTXREG8: UARTx Data of the Transmitted Character bit (in 9-bit mode) bit 7-0 UxTXREG<7:0>: UARTx Data of the Transmitted Character bits Note 1: This bit is only available for UART1 and UART2. REGISTER 18-4: UxADMD: UARTx ADDRESS MATCH DETECT REGISTER R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 ADMMASK7 ADMMASK6 ADMMASK5 ADMMASK4 ADMMASK3 ADMMASK2 ADMMASK1 ADMMASK0 bit 15 bit 8 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 ADMADDR7 ADMADDR6 ADMADDR5 ADMADDR4 ADMADDR3 ADMADDR2 ADMADDR1 ADMADDR0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-8 ADMMASK<7:0>: UARTx ADMADDR<7:0> (UxADMD<7:0>) Masking bits For ADMMASK<x>: 1 = ADMADDR<x> is used to detect the address match 0 = ADMADDR<x> is not used to detect the address match bit 7-0 ADMADDR<7:0>: UARTx Address Detect Task Off-Load bits Used with the ADMMASK<7:0> bits (UxADMD<15:8>) to off-load the task of detecting the address character from the processor during Address Detect mode. DS30005009C-page 262 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 18-5: UxSCCON: UARTx SMART CARD CONTROL REGISTER(1) U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 15 bit 8 U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 -- -- TXRPT1(2) TXRPT0(2) CONV T0PD(2) PTRCL SCEN bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-6 Unimplemented: Read as `0' bit 5-4 TXRPT<1:0>: Transmit Repeat Selection bits(2) 11 = Retransmits the error byte four times 10 = Retransmits the error byte three times 01 = Retransmits the error byte twice 00 = Retransmits the error byte once bit 3 CONV: Logic Convention Selection bit 1 = Inverse logic convention 0 = Direct logic convention bit 2 T0PD: Pull-Down Duration for T = 0 Error Handling bit(2) 1 = 2 ETU 0 = 1 ETU bit 1 PTRCL: Smart Card Protocol Selection bit 1=T=1 0=T=0 bit 0 SCEN: Smart Card Mode Enable bit 1 = Smart Card mode is enabled if UARTEN (UxMODE<15>) = 1 0 = Smart Card mode is disabled Note 1: 2: x = Bit is unknown This register is only available for UART1 and UART2. These bits are applicable to T = 0 only, see PTRCL (UxSCCON<1>). 2013-2015 Microchip Technology Inc. DS30005009C-page 263 PIC24FJ128GB204 FAMILY UxSCINT: UARTx SMART CARD INTERRUPT REGISTER(1) REGISTER 18-6: U-0 U-0 -- -- R/W-0 RXRPTIF R/W-0 (2) (2) TXRPTIF U-0 U-0 R/W-0 R/W-0 -- -- WTCIF GTCIF bit 15 bit 8 U-0 R/W-0 R/W-0 R/W-0 U-0 U-0 R/W-0 R/W-0 -- PARIE(2) RXRPTIE(2) TXRPTIE(2) -- -- WTCIE GTCIE bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-14 Unimplemented: Read as `0' bit 13 RXRPTIF: Receive Repeat Interrupt Flag bit(2) 1 = Parity error has persisted after the same character has been received five times (four retransmits) 0 = Flag is cleared bit 12 TXRPTIF: Transmit Repeat Interrupt Flag bit(2) 1 = Line error has been detected after the last retransmit per TXRPT<1:0> (see Register 18-5) 0 = Flag is cleared bit 11-10 Unimplemented: Read as `0' bit 9 WTCIF: Waiting Time Counter Interrupt Flag bit 1 = Waiting Time Counter has reached 0 0 = Waiting Time Counter has not reached 0 bit 8 GTCIF: Guard Time Counter Interrupt Flag bit 1 = Guard Time Counter has reached 0 0 = Guard Time Counter has not reached 0 bit 7 Unimplemented: Read as `0' bit 6 PARIE: Parity Interrupt Enable bit(2) 1 = An interrupt is invoked when a character is received with a parity error (see PERR (UxSTA<3>) in Register 18-2 for the interrupt flag) 0 = Interrupt is disabled bit 5 RXRPTIE: Receive Repeat Interrupt Enable bit(2) 1 = An interrupt is invoked when a parity error has persisted after the same character has been received five times (four retransmits) 0 = Interrupt is disabled bit 4 TXRPTIE: Transmit Repeat Interrupt Enable bit(2) 1 = An interrupt is invoked when a line error is detected after the last retransmit per TXRPT<1:0> has been completed (see Register 18-5) 0 = Interrupt is disabled bit 3-2 Unimplemented: Read as `0' bit 1 WTCIE: Waiting Time Counter Interrupt Enable bit 1 = Waiting Time Counter interrupt is enabled 0 = Waiting Time Counter interrupt is disabled bit 0 GTCIE: Guard Time Counter Interrupt Enable bit 1 = Guard Time Counter interrupt is enabled 0 = Guard Time Counter interrupt is disabled Note 1: 2: This register is only available for UART1 and UART2. These bits are applicable to T = 0 only, see PTRCL (UxSCCON<1>). DS30005009C-page 264 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 19.0 Note: UNIVERSAL SERIAL BUS WITH ON-THE-GO SUPPORT (USB OTG) This data sheet summarizes the features of this group of PIC24F devices. It is not intended to be a comprehensive reference source. For more information, refer to the "dsPIC33/PIC24 Family Reference Manual", "USB On-The-Go (OTG)" (DS39721). The information in this data sheet supersedes the information in the FRM. PIC24FJ128GB204 family devices contain a full-speed and low-speed compatible, On-The-Go (OTG) USB Serial Interface Engine (SIE). The OTG capability allows the device to act either as a USB peripheral device or as a USB embedded host with limited host capabilities. The OTG capability allows the device to dynamically switch from device to host operation using OTG's Host Negotiation Protocol (HNP). For more details on OTG operation, refer to the "On-The-Go Supplement" to the "USB 2.0 Specification", published by the USB-IF. For more details on USB operation, refer to the "Universal Serial Bus Specification", v2.0. The USB OTG module offers these features: * USB functionality in Device and Host modes, and OTG capabilities for application-controlled mode switching * Software-selectable module speeds of full speed (12 Mbps) or low speed (1.5 Mbps, available in Host mode only) * Support for all four USB transfer types: control, interrupt, bulk and isochronous * Sixteen bidirectional endpoints for a total of 32 unique endpoints * DMA interface for data RAM access * Queues up to sixteen unique endpoint transfers without servicing * Integrated, on-chip USB transceiver * Integrated VBUS generation with on-chip comparators and boost generation * Configurations for on-chip bus pull-up and pull-down resistors The USB OTG module can function as a USB peripheral device or as a USB host, and may dynamically switch between Device and Host modes under software control. In either mode, the same data paths and Buffer Descriptors (BDs) are used for the transmission and reception of data. In discussing USB operation, this section will use a controller-centric nomenclature for describing the direction of the data transfer between the microcontroller and the USB. RX (Receive) will be used to describe transfers that move data from the USB to the microcontroller and TX (Transmit) will be used to describe transfers that move data from the microcontroller to the USB. Table 19-1 shows the relationship between data direction in this nomenclature and the USB tokens exchanged. TABLE 19-1: USB Mode Device Host CONTROLLER-CENTRIC DATA DIRECTION FOR USB HOST OR TARGET Direction RX TX OUT or SETUP IN IN OUT or SETUP This chapter presents the most basic operations needed to implement USB OTG functionality in an application. A complete and detailed discussion of the USB protocol and its OTG supplement are beyond the scope of this data sheet. It is assumed that the user already has a basic understanding of USB architecture and the latest version of the protocol. Not all steps for proper USB operation (such as device enumeration) are presented here. It is recommended that application developers use an appropriate device driver to implement all of the necessary features. Microchip provides a number of application-specific resources, such as USB firmware and driver support. Refer to www.microchip.com/usb for the latest firmware and driver support. A simplified block diagram of the USB OTG module is shown in Figure 19-1. 2013-2015 Microchip Technology Inc. DS30005009C-page 265 PIC24FJ128GB204 FAMILY FIGURE 19-1: USB OTG MODULE BLOCK DIAGRAM Full-Speed Pull-up Host Pull-Down 48 MHz USB Clock D+(1) Registers and Control Interface Transceiver VUSB3V3 Transceiver Power 3.3V D-(1) Host Pull-Down USBID(1) USB SIE VMIO(1) VPIO(1) DMH(1) DPH(1) External Transceiver Interface DMLN(1) DPLN(1) RCV(1) System RAM USBOEN(1) VBUSON(1) SRP Charge USB Voltage Comparators VBUS(1) SRP Discharge VBUSST(1) VCPCON(1) Note 1: VBUS Boost Assist Pins are multiplexed with digital I/Os and other device features. DS30005009C-page 266 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 19.1 Hardware Configuration 19.1.1 DEVICE MODE 19.1.1.1 D+ Pull-up Resistor PIC24FJ128GB204 family devices have a built-in 1.5 k resistor on the D+ line that is available when the microcontroller is operating in Device mode. This is used to signal an external host that the device is operating in Full-Speed Device mode. It is engaged by setting the USBEN bit (U1CON<0>). If the OTGEN bit (U1OTGCON<2>) is set, then the D+ pull-up is enabled through the DPPULUP bit (U1OTGCON<7>). Alternatively, an external resistor may be used on D+, as shown in Figure 19-2. FIGURE 19-2: EXTERNAL PULL-UP FOR FULL-SPEED DEVICE MODE To meet compliance specifications, the USB module (and the D+ or D- pull-up resistor) should not be enabled until the host actively drives VBUS high. One of the 5.5V tolerant I/O pins may be used for this purpose. The application should never source any current onto the 5V VBUS pin of the USB cable. The Dual Power with Self-Power Dominance mode (Figure 19-5) allows the application to use internal power primarily, but switch to power from the USB when no internal power is available. Dual power devices must also meet all of the special requirements for inrush current and Suspend mode current previously described, and must not enable the USB module until VBUS is driven high. FIGURE 19-3: BUS POWER ONLY 100 Host Controller/HUB (R) PIC MCU 3.3V VBUS ~5V Attach Sense VBUS VDD Low IQ Regulator VUSB3V3 VUSB3V3 VSS 1.5 k D+ D- 19.1.1.2 Power Modes Many USB applications will likely have several different sets of power requirements and configuration. The most common power modes encountered are: * Bus Power Only mode * Self-Power Only mode * Dual Power with Self-Power Dominance mode Bus Power Only mode (Figure 19-3) is effectively the simplest method. All power for the application is drawn from the USB. To meet the inrush current requirements of the "USB 2.0 Specification", the total effective capacitance appearing across VBUS and ground must be no more than 10 F. In the USB Suspend mode, devices must consume no more than 2.5 mA from the 5V VBUS line of the USB cable. During the USB Suspend mode, the D+ or Dpull-up resistor must remain active, which will consume some of the allowed suspend current. FIGURE 19-4: SELF-POWER ONLY 100 VBUS ~5V Attach Sense VSELF ~3.3V VBUS VDD VUSB3V3 100 k VSS FIGURE 19-5: DUAL POWER EXAMPLE 100 3.3V VBUS ~5V Low IQ Regulator VSELF ~3.3V 100 k Attach Sense VBUS VDD VUSB3V3 VSS In Self-Power Only mode (Figure 19-4), the USB application provides its own power, with very little power being pulled from the USB. Note that an attach indication is added to indicate when the USB has been connected and the host is actively powering VBUS. 2013-2015 Microchip Technology Inc. DS30005009C-page 267 PIC24FJ128GB204 FAMILY 19.1.2 19.1.2.1 HOST AND OTG MODES 19.1.2.2 In Host mode, as well as Host mode in On-The-Go operation, the "USB 2.0 Specification" requires that the host application should supply power on VBUS. Since the microcontroller is running below VBUS, and is not able to source sufficient current, a separate power supply must be provided. D+ and D- Pull-Down Resistors PIC24FJ128GB204 family devices have a built-in 15 k pull-down resistor on the D+ and D- lines. These are used in tandem to signal to the bus that the microcontroller is operating in Host mode. They are engaged by setting the HOSTEN bit (U1CON<3>). If the OTGEN bit (U1OTGCON<2>) is set, then these pull-downs are enabled by setting the DPPULDWN and DMPULDWN bits (U1OTGCON<5:4>). FIGURE 19-6: Power Configurations When the application is always operating in Host mode, a simple circuit can be used to supply VBUS and regulate current on the bus (Figure 19-6). For OTG operation, it is necessary to be able to turn VBUS on or off as needed, as the microcontroller switches between Device and Host modes. A typical example using an external charge pump is shown in Figure 19-7. USB HOST INTERFACE EXAMPLE +5V +3.3V +3.3V Thermal Fuse Polymer PTC VDD VUSB3V3 0.1 F, 3.3V 2 k 150 F A/D Pin 2 k Micro A/B Connector VBUS D+ DID GND FIGURE 19-7: PIC(R) MCU VBUS D+ DID VSS USB OTG INTERFACE EXAMPLE VDD PIC(R) MCU MCP1253 1 F Micro A/B Connector 4.7 F VBUS D+ DID GND DS30005009C-page 268 GND C+ VIN SELECT CVOUT SHND PGOOD 10 F I/O I/O 40 k VBUS D+ DID VSS 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 19.1.2.3 VBUS Voltage Generation with External Devices When operating as a USB host, either as an A-device in an OTG configuration or as an embedded host, VBUS must be supplied to the attached device. PIC24FJ128GB204 family devices have an internal VBUS boost assist to help generate the required 5V VBUS from the available voltages on the board. This is comprised of a simple PWM output to control a Switch mode power supply, and built-in comparators to monitor output voltage and limit current. To enable voltage generation: 1. 2. 3. Verify that the USB module is powered (U1PWRC<0> = 1) and that the VBUS discharge is disabled (U1OTGCON<0> = 0). Select the desired target voltage using the VBUSCHG bit (U1OTGCON<1>). generation circuit Enable the VBUS (U1OTGCON<3> = 1). EQUATION 19-1: Note: 19.1.3 This section describes the general process for VBUS voltage generation and control. Please refer to the "dsPIC33/PIC24 Family Reference Manual" for additional examples. CALCULATING TRANSCEIVER POWER REQUIREMENTS The USB transceiver consumes a variable amount of current depending on the characteristic impedance of the USB cable, the length of the cable, the VUSB3V3 supply voltage and the actual data patterns moving across the USB cable. Longer cables have larger capacitances and consume more total energy when switching output states. The total transceiver current consumption will be application-specific. Equation 19-1 can help estimate how much current actually may be required in full-speed applications. Refer to the "dsPIC33/PIC24 Family Reference Manual", "USB On-The-Go (OTG)" (DS39721) for a complete discussion on transceiver power consumption. ESTIMATING USB TRANSCEIVER CURRENT CONSUMPTION IXCVR = 40 mA * VUSB3V3 * PZERO * PIN * LCABLE + IPULLUP 3.3V * 5m Legend: VUSB3V3 - Voltage applied to the VUSB3V3 pin in volts (3.0V to 3.6V). PZERO - Percentage (in decimal) of the IN traffic bits sent by the PIC(R) microcontroller that are a value of `0'. PIN - Percentage (in decimal) of total bus bandwidth that is used for In traffic. LCABLE - Length (in meters) of the USB cable. The "USB 2.0 Specification" requires that full-speed applications use cables no longer than 5m. IPULLUP - Current which the nominal, 1.5 k pull-up resistor (when enabled) must supply to the USB cable. 2013-2015 Microchip Technology Inc. DS30005009C-page 269 PIC24FJ128GB204 FAMILY 19.2 USB Buffer Descriptors and the BDT Endpoint buffer control is handled through a structure called the Buffer Descriptor Table (BDT). This provides a flexible method for users to construct and control endpoint buffers of various lengths and configurations. The BDT can be located in any available, 512-byte aligned block of data RAM. The BDT Pointer (U1BDTP1) contains the upper address byte of the BDT and sets the location of the BDT in RAM. The user must set this pointer to indicate the table's location. The BDT is composed of Buffer Descriptors (BDs) which are used to define and control the actual buffers in the USB RAM space. Each BD consists of two, 16-bit "soft" (non-fixed address) registers, BDnSTAT and BDnADR, where n represents one of the 64 possible BDs (range of 0 to 63). BDnSTAT is the status register for BDn, while BDnADR specifies the starting address for the buffer associated with BDn. Note: Since BDnADR is a 16-bit register, only the first 64 Kbytes of RAM can be accessed by the USB module. FIGURE 19-8: Depending on the endpoint buffering configuration used, there are up to 64 sets of Buffer Descriptors, for a total of 256 bytes. At a minimum, the BDT must be at least 8 bytes long. This is because the "USB 2.0 Specification" mandates that every device must have Endpoint 0 with both input and output for initial setup. Endpoint mapping in the BDT is dependent on three variables: * Endpoint number (0 to 15) * Endpoint direction (RX or TX) * Ping-pong settings (U1CNFG1<1:0>) Figure 19-8 illustrates how these variables are used to map endpoints in the BDT. In Host mode, only Endpoint 0 Buffer Descriptors are used. All transfers utilize the Endpoint 0 Buffer Descriptor and USB Endpoint Control register (U1EP0). For received packets, the attached device's source endpoint is indicated by the value of ENDPT<3:0> in the USB Status register (U1STAT<7:4>). For transmitted packets, the attached device's destination endpoint is indicated by the value written to the USB Token register (U1TOK). BDT MAPPING FOR ENDPOINT BUFFERING MODES PPB<1:0> = 00 No Ping-Pong Buffers PPB<1:0> = 01 Ping-Pong Buffer on EP0 OUT PPB<1:0> = 10 Ping-Pong Buffers on All EPs Total BDT Space: 128 Bytes Total BDT Space: 132 Bytes Total BDT Space: 256 Bytes PPB<1:0> = 11 Ping-Pong Buffers on All Other EPs, Except EP0 Total BDT Space: 248 Bytes EP0 RX Descriptor EP0 RX Even Descriptor EP0 RX Even Descriptor EP0 RX Descriptor EP0 TX Descriptor EP0 RX Odd Descriptor EP0 RX Odd Descriptor EP0 TX Descriptor EP0 TX Even Descriptor EP1 RX Even Descriptor EP0 TX Odd Descriptor EP1 RX Odd Descriptor EP1 RX Even Descriptor EP1 TX Even Descriptor EP1 RX Odd Descriptor EP1 TX Odd Descriptor EP1 RX Descriptor EP1 TX Descriptor EP0 TX Descriptor EP1 RX Descriptor EP1 TX Descriptor EP15 TX Descriptor EP15 TX Descriptor EP1 TX Even Descriptor EP1 TX Odd Descriptor EP15 TX Odd Descriptor Note: EP15 TX Odd Descriptor Memory area is not shown to scale. DS30005009C-page 270 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY BDs have a fixed relationship to a particular endpoint, depending on the buffering configuration. Table 19-2 provides the mapping of BDs to endpoints. This relationship also means that gaps may occur in the BDT if endpoints are not enabled contiguously. This, theoretically, means that the BDs for disabled endpoints could be used as buffer space. In practice, users should avoid using such spaces in the BDT unless a method of validating BD addresses is implemented. 19.2.1 corresponding data buffer during this time. Note that the microcontroller core can still read BDnSTAT while the SIE owns the buffer and vice versa. The Buffer Descriptors have a different meaning based on the source of the register update. Register 19-1 and Register 19-2 show the differences in BDnSTAT depending on its current "ownership". When UOWN is set, the user can no longer depend on the values that were written to the BDs. From this point, the USB module updates the BDs as necessary, overwriting the original BD values. The BDnSTAT register is updated by the SIE with the token PID and the transfer count is updated. BUFFER OWNERSHIP Because the buffers and their BDs are shared between the CPU and the USB module, a simple semaphore mechanism is used to distinguish which is allowed to update the BD and associated buffers in memory. This is done by using the UOWN bit as a semaphore to distinguish which is allowed to update the BD and associated buffers in memory. UOWN is the only bit that is shared between the two configurations of BDnSTAT. 19.2.2 The USB OTG module uses a dedicated DMA to access both the BDT and the endpoint data buffers. Since part of the address space of the DMA is dedicated to the Buffer Descriptors, a portion of the memory connected to the DMA must comprise a contiguous address space, properly mapped for the access by the module. When UOWN is clear, the BD entry is "owned" by the microcontroller core. When the UOWN bit is set, the BD entry and the buffer memory are "owned" by the USB peripheral. The core should not modify the BD or its TABLE 19-2: DMA INTERFACE ASSIGNMENT OF BUFFER DESCRIPTORS FOR THE DIFFERENT BUFFERING MODES BDs Assigned to Endpoint Endpoint 0 Mode 0 (No Ping-Pong) Mode 1 (Ping-Pong on EP0 OUT) Mode 2 (Ping-Pong on all EPs) Mode 3 (Ping-Pong on All Other EPs, Except EP0) Out In Out In Out In Out In 0 1 0 (E), 1 (O) 2 0 (E), 1 (O) 2 (E), 3 (O) 0 1 1 2 3 3 4 4 (E), 5 (O) 6 (E), 7 (O) 2 (E), 3 (O) 4 (E), 5 (O) 2 4 5 5 6 8 (E), 9 (O) 10 (E), 11 (O) 6 (E), 7 (O) 8 (E), 9 (O) 3 6 7 7 8 12 (E), 13 (O) 14 (E), 15 (O) 10 (E), 11 (O) 12 (E), 13 (O) 4 8 9 9 10 16 (E), 17 (O) 18 (E), 19 (O) 14 (E), 15 (O) 16 (E), 17 (O) 5 10 11 11 12 20 (E), 21 (O) 22 (E), 23 (O) 18 (E), 19 (O) 20 (E), 21 (O) 6 12 13 13 14 24 (E), 25 (O) 26 (E), 27 (O) 22 (E), 23 (O) 24 (E), 25 (O) 7 14 15 15 16 28 (E), 29 (O) 30 (E), 31 (O) 26 (E), 27 (O) 28 (E), 29 (O) 8 16 17 17 18 32 (E), 33 (O) 34 (E), 35 (O) 30 (E), 31 (O) 32 (E), 33 (O) 9 18 19 19 20 36 (E), 37 (O) 38 (E), 39 (O) 34 (E), 35 (O) 36 (E), 37 (O) 10 20 21 21 22 40 (E), 41 (O) 42 (E), 43 (O) 38 (E), 39 (O) 40 (E), 41 (O) 11 22 23 23 24 44 (E), 45 (O) 46 (E), 47 (O) 42 (E), 43 (O) 44 (E), 45 (O) 12 24 25 25 26 48 (E), 49 (O) 50 (E), 51 (O) 46 (E), 47 (O) 48 (E), 49 (O) 13 26 27 27 28 52 (E), 53 (O) 54 (E), 55 (O) 50 (E), 51 (O) 52 (E), 53 (O) 14 28 29 29 30 56 (E), 57 (O) 58 (E), 59 (O) 54 (E), 55 (O) 56 (E), 57 (O) 15 30 31 31 32 60 (E), 61 (O) 62 (E), 63 (O) 58 (E), 59 (O) 60 (E), 61 (O) Legend: (E) = Even transaction buffer, (O) = Odd transaction buffer 2013-2015 Microchip Technology Inc. DS30005009C-page 271 PIC24FJ128GB204 FAMILY REGISTER 19-1: BDnSTAT: BUFFER DESCRIPTOR n STATUS REGISTER PROTOTYPE, USB MODE (BD0STAT THROUGH BD63STAT) R/W-x R/W-x R/W-x, HSC R/W-x, HSC R/W-x, HSC R/W-x, HSC R/W-x, HSC R/W-x, HSC UOWN DTS PID3 PID2 PID1 PID0 BC9 BC8 bit 15 bit 8 R/W-x, HSC R/W-x, HSC R/W-x, HSC R/W-x, HSC R/W-x, HSC R/W-x, HSC R/W-x, HSC R/W-x, HSC BC7 BC6 BC5 BC4 BC3 BC2 BC1 BC0 bit 7 bit 0 Legend: HSC = Hardware Settable/Clearable bit R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15 UOWN: USB Own bit 1 = The USB module owns the BD and its corresponding buffer; the CPU must not modify the BD or the buffer bit 14 DTS: Data Toggle Packet bit 1 = Data 1 packet 0 = Data 0 packet bit 13-10 PID<3:0>: Packet Identifier bits (written by the USB module) In Device Mode: Represents the PID of the received token during the last transfer. In Host Mode: Represents the last returned PID or the transfer status indicator. bit 9-0 BC<9:0>: Byte Count bits This represents the number of bytes to be transmitted or the maximum number of bytes to be received during a transfer. Upon completion, the byte count is updated by the USB module with the actual number of bytes transmitted or received. DS30005009C-page 272 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 19-2: BDnSTAT: BUFFER DESCRIPTOR n STATUS REGISTER PROTOTYPE, CPU MODE (BD0STAT THROUGH BD63STAT) R/W-x R/W-x r-0 r-0 R/W-x R/W-x R/W-x, HSC R/W-x, HSC UOWN (1) -- -- DTSEN BSTALL BC9 BC8 DTS bit 15 bit 8 R/W-x, HSC R/W-x, HSC R/W-x, HSC R/W-x, HSC R/W-x, HSC R/W-x, HSC R/W-x, HSC R/W-x, HSC BC7 BC6 BC5 BC4 BC3 BC2 BC1 BC0 bit 7 bit 0 Legend: r = Reserved bit HSC = Hardware Settable/Clearable bit R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `r' = Reserved bit x = Bit is unknown bit 15 UOWN: USB Own bit 0 = The microcontroller core owns the BD and its corresponding buffer; the USB module ignores all other fields in the BD bit 14 DTS: Data Toggle Packet bit(1) 1 = Data 1 packet 0 = Data 0 packet bit 13-12 Reserved: Maintain as `0' bit 11 DTSEN: Data Toggle Synchronization Enable bit 1 = Data toggle synchronization is enabled; data packets with incorrect Sync value will be ignored 0 = No data toggle synchronization is performed bit 10 BSTALL: Buffer STALL Enable bit 1 = Buffer STALL is enabled; STALL handshake is issued if a token is received that would use the BD in the given location (UOWN bit remains set, BD value is unchanged); corresponding EPSTALL bit will get set on any STALL handshake 0 = Buffer STALL is disabled bit 9-0 BC<9:0>: Byte Count bits This represents the number of bytes to be transmitted or the maximum number of bytes to be received during a transfer. Upon completion, the byte count is updated by the USB module with the actual number of bytes transmitted or received. Note 1: This bit is ignored unless DTSEN = 1. 2013-2015 Microchip Technology Inc. DS30005009C-page 273 PIC24FJ128GB204 FAMILY 19.3 USB Interrupts level consists of USB error conditions, which are enabled and flagged in the U1EIR and U1EIE registers. An interrupt condition in any of these triggers a USB Error Interrupt Flag (UERRIF) in the top level. The USB OTG module has many conditions that can be configured to cause an interrupt. All interrupt sources use the same interrupt vector. Interrupts may be used to trap routine events in a USB transaction. Figure 19-10 provides some common events within a USB frame and their corresponding interrupts. Figure 19-9 shows the interrupt logic for the USB module. There are two layers of interrupt registers in the USB module. The top level consists of overall USB status interrupts; these are enabled and flagged in the U1IE and U1IR registers, respectively. The second FIGURE 19-9: USB OTG INTERRUPT FUNNEL Top Level (USB Status) Interrupts STALLIF STALLIE ATTACHIF ATTACHIE RESUMEIF RESUMEIE IDLEIF IDLEIE TRNIF TRNIE Second Level (USB Error) Interrupts SOFIF SOFIE BTSEF BTSEE DMAEF DMAEE BTOEF BTOEE DFN8EF DFN8EE CRC16EF CRC16EE CRC5EF (EOFEF) CRC5EE (EOFEE) PIDEF PIDEE URSTIF (DETACHIF) URSTIE (DETACHIE) Set USB1IF (UERRIF) UERRIE IDIF IDIE T1MSECIF T1MSECIE LSTATEIF LSTATEIE ACTVIF ACTVIE SESVDIF SESVDIE SESENDIF SESENDIE VBUSVDIF VBUSVDIE Top Level (USB OTG) Interrupts DS30005009C-page 274 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 19.3.1 CLEARING USB OTG INTERRUPTS Unlike device-level interrupts, the USB OTG interrupt status flags are not freely writable in software. All USB OTG flag bits are implemented as hardware settable only bits. Additionally, these bits can only be cleared in FIGURE 19-10: software by writing a `1' to their locations (i.e., performing a MOV type instruction). Writing a `0' to a flag bit (i.e., a BCLR instruction) has no effect. Note: Throughout this data sheet, a bit that can only be cleared by writing a `1' to its location is referred to as: "Write `1' to clear". In register descriptions, this function is indicated by the descriptor, "K". EXAMPLE OF A USB TRANSACTION AND INTERRUPT EVENTS From Host From Host To Host SETUP Token Data ACK USB Reset URSTIF Start-of-Frame (SOF) SOFIF Set TRNIF From Host To Host From Host IN Token Data ACK Set TRNIF To Host ACK Set TRNIF From Host From Host OUT Token Empty Data Transaction RESET SOF SETUP DATA STATUS Transaction Complete SOF Differential Data Control Transfer(1) Note 1: 19.4 The control transfer shown here is only an example showing events that can occur for every transaction. Typical control transfers will spread across multiple frames. Device Mode Operation The following section describes how to perform a common Device mode task. In Device mode, USB transfers are performed at the transfer level. The USB module automatically performs the status phase of the transfer. 19.4.1 1. 2. 3. 4. 1 ms Frame 5. 6. 7. ENABLING DEVICE MODE Reset the Ping-Pong Buffer Pointers by setting, then clearing, the Ping-Pong Buffer Reset bit, PPBRST (U1CON<1>). Disable all interrupts (U1IE and U1EIE = 00h). Clear any existing interrupt flags by writing FFh to U1IR and U1EIR. Verify that VBUS is present (non-OTG devices only). 2013-2015 Microchip Technology Inc. 8. 9. Enable the USB module by setting the USBEN bit (U1CON<0>). Set the OTGEN bit (U1OTGCON<2>) to enable OTG operation. Enable the Endpoint 0 buffer to receive the first setup packet by setting the EPRXEN and EPHSHK bits for Endpoint 0 (U1EP0<3,0> = 1). Power up the USB module by setting the USBPWR bit (U1PWRC<0>). Enable the D+ pull-up resistor to signal an attach by setting the DPPULUP bit (U1OTGCON<7>). DS30005009C-page 275 PIC24FJ128GB204 FAMILY 19.4.2 1. 2. 3. 4. Attach to a USB host and enumerate as described in Chapter 9 of the "USB 2.0 Specification". Create a data buffer and populate it with the data to send to the host. In the appropriate (Even or Odd) TX BD for the desired endpoint: a) Set up the status register (BDnSTAT) with the correct data toggle (DATA0/1) value and the byte count of the data buffer. b) Set up the address register (BDnADR) with the starting address of the data buffer. c) Set the UOWN bit of the status register to `1'. When the USB module receives an IN token, it automatically transmits the data in the buffer. Upon completion, the module updates the status register (BDnSTAT) and sets the Transfer Done Interrupt Flag, TRNIF (U1IR<3>). 19.4.3 1. 2. 3. 4. RECEIVING AN IN TOKEN IN DEVICE MODE RECEIVING AN OUT TOKEN IN DEVICE MODE Attach to a USB host and enumerate as described in Chapter 9 of the "USB 2.0 Specification". Create a data buffer with the amount of data you are expecting from the host. In the appropriate (Even or Odd) TX BD for the desired endpoint: a) Set up the status register (BDnSTAT) with the correct data toggle (DATA0/1) value and the byte count of the data buffer. b) Set up the address register (BDnADR) with the starting address of the data buffer. c) Set the UOWN bit of the status register to `1'. When the USB module receives an OUT token, it automatically receives the data sent by the host to the buffer. Upon completion, the module updates the status register (BDnSTAT) and sets the Transfer Done Interrupt Flag, TRNIF (U1IR<3>). DS30005009C-page 276 19.5 Host Mode Operation The following sections describe how to perform common Host mode tasks. In Host mode, USB transfers are invoked explicitly by the host software. The host software is responsible for the Acknowledge portion of the transfer. Also, all transfers are performed using the USB Endpoint 0 Control register (U1EP0) and Buffer Descriptors. 19.5.1 ENABLE HOST MODE AND DISCOVER A CONNECTED DEVICE 1. Enable Host mode by setting the HOSTEN bit (U1CON<3>). This causes the Host mode control bits in other USB OTG registers to become available. 2. Enable the D+ and D- pull-down resistors by setting the DPPULDWN and DMPULDWN bits (U1OTGCON<5:4>). Disable the D+ and Dpull-up resistors by clearing the DPPULUP and DMPULUP bits (U1OTGCON<7:6>). 3. At this point, Start-of-Frame (SOF) generation begins with the SOF counter loaded with 12,000. Eliminate noise on the USB by clearing the SOFEN bit (U1CON<0>) to disable Start-of-Frame packet generation. 4. Enable the device attached interrupt by setting the ATTACHIE bit (U1IE<6>). 5. Wait for the device attached interrupt (U1IR<6> = 1). This is signaled by the USB device changing the state of D+ or D- from `0' to `1' (SE0 to J-state). After it occurs, wait 100 ms for the device power to stabilize. 6. Check the state of the JSTATE and SE0 bits in U1CON. If the JSTATE bit (U1CON<7>) is `0', the connecting device is low speed. If the connecting device is low speed, set the LSPDEN and LSPD bits (U1ADDR<7> and U1EP0<7>, respectively) to enable low-speed operation. 7. Reset the USB device by setting the USBRST bit (U1CON<4>) for at least 50 ms, sending Reset signaling on the bus. After 50 ms, terminate the Reset by clearing USBRST. 8. In order to keep the connected device from going into suspend, enable the SOF packet generation by setting the SOFEN bit. 9. Wait 10 ms for the device to recover from Reset. 10. Perform enumeration as described by Chapter 9 of the "USB 2.0 Specification". 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 19.5.2 1. 2. 3. 4. 5. 6. 7. COMPLETE A CONTROL TRANSACTION TO A CONNECTED DEVICE Follow the procedure described in Section 19.5.1 "Enable Host Mode and Discover a Connected Device" to discover a device. Set up the Endpoint Control register for bidirectional control transfers by writing 0Dh to U1EP0 (this sets the EPCONDIS, EPTXEN and EPHSHK bits). Place a copy of the device framework setup command in a memory buffer. See Chapter 9 of the "USB 2.0 Specification" for information on the device framework command set. Initialize the Buffer Descriptor (BD) for the current (Even or Odd) TX EP0 to transfer the eight bytes of command data for a device framework command (i.e., GET DEVICE DESCRIPTOR): a) Set the BD Data Buffer Address (BD0ADR) to the starting address of the 8-byte memory buffer containing the command. b) Write 8008h to BD0STAT (this sets the UOWN bit and sets a byte count of 8). Set the USB device address of the target device in the USB Address register (U1ADDR<6:0>). After a USB bus Reset, the device USB address will be zero. After enumeration, it will be set to another value, between 1 and 127. Write D0h to U1TOK; this is a SETUP token to Endpoint 0, the target device's default control pipe. This initiates a SETUP token on the bus, followed by a data packet. The device handshake is returned in the PID field of BD0STAT after the packets are complete. When the USB module updates BD0STAT, a Transfer Done Interrupt Flag is asserted (the TRNIF flag is set). This completes the setup phase of the setup transaction, as referenced in Chapter 9 of the "USB 2.0 Specification". To initiate the data phase of the setup transaction (i.e., get the data for the GET DEVICE DESCRIPTOR command), set up a buffer in memory to store the received data. 8. Initialize the current (Even or Odd) RX or TX (RX for IN, TX for OUT) EP0 BD to transfer the data. a) Write C040h to BD0STAT. This sets the UOWN, configures Data Toggle Packet (DTS) to DATA1 and sets the byte count to the length of the data buffer (64 or 40h in this case). b) Set BD0ADR to the starting address of the data buffer. 9. Write the USB Token register with the appropriate IN or OUT token to Endpoint 0, the target device's default control pipe (e.g., write 90h to U1TOK for an IN token for a GET DEVICE DESCRIPTOR command). This initiates an IN token on the bus, followed by a data packet from the device to the host. When the data packet completes, the BD0STAT is written and a Transfer Done Interrupt Flag is asserted (the TRNIF flag is set). For control transfers with a single packet data phase, this completes the data phase of the setup transaction, as referenced in Chapter 9 of the "USB 2.0 Specification". If more data needs to be transferred, return to Step 8. 10. To initiate the status phase of the setup transaction, set up a buffer in memory to receive or send the zero length status phase data packet. 11. Initialize the current (Even or Odd) TX EP0 BD to transfer the status data: a) Set the BDT buffer address field to the starting address of the data buffer. b) Write 8000h to BD0STAT (set UOWN bit, configure DTS to DATA0 and set byte count to 0). 12. Write the USB Token register with the appropriate IN or OUT token to Endpoint 0, the target device's default control pipe (e.g., write 01h to U1TOK for an OUT token for a GET DEVICE DESCRIPTOR command). This initiates an OUT token on the bus, followed by a zero length data packet from the host to the device. When the data packet completes, the BD is updated with the handshake from the device and a Transfer Done interrupt Flag is asserted (the TRNIF flag is set). This completes the status phase of the setup transaction as described in Chapter 9 of the "USB 2.0 Specification". Note: 2013-2015 Microchip Technology Inc. Only one control transaction can be performed per frame. DS30005009C-page 277 PIC24FJ128GB204 FAMILY 19.5.3 1. 2. 3. 4. 5. 6. 7. SEND A FULL-SPEED BULK DATA TRANSFER TO A TARGET DEVICE Follow the procedure described in Section 19.5.1 "Enable Host Mode and Discover a Connected Device" and Section 19.5.2 "Complete a Control Transaction to a Connected Device" to discover and configure a device. To enable transmit and receive transfers with handshaking enabled, write 1Dh to U1EP0. If the target device is a low-speed device, also set the LSPD (U1EP0<7>) bit. If you want the hardware to automatically retry indefinitely, if the target device asserts a NAK on the transfer, clear the Retry Disable bit, RETRYDIS (U1EP0<6>). Set up the BD for the current (Even or Odd) TX EP0 to transfer up to 64 bytes. Set the USB device address of the target device in the USB Address register (U1ADDR<6:0>). Write an OUT token to the desired endpoint to U1TOK. This triggers the module's transmit state machines to begin transmitting the token and the data. Wait for the Transfer Done Interrupt Flag, TRNIF. This indicates that the BD has been released back to the microprocessor and the transfer has completed. If the Retry Disable bit (RETRYDIS) is set, the handshake (ACK, NAK, STALL or ERROR (0Fh)) is returned in the BD PID field. If a STALL interrupt occurs, the pending packet must be dequeued and the error condition in the target device cleared. If a detach interrupt occurs (SE0 for more than 2.5 s), then the target has detached (U1IR<0> is set). Once the Transfer Done Interrupt Flag occurs (TRNIF is set), the BD can be examined and the next data packet queued by returning to Step 2. Note: USB speed, transceiver and pull-ups should only be configured during the module setup phase. It is not recommended to change these settings while the module is enabled. 19.6 19.6.1 OTG Operation SESSION REQUEST PROTOCOL (SRP) An OTG A-device may decide to power down the VBUS supply when it is not using the USB link through the Session Request Protocol (SRP). Software may do this by clearing VBUSON (U1OTGCON<3>). When the VBUS supply is powered down, the A-device is said to have ended a USB session. An OTG A-device or embedded host may repower the VBUS supply at any time (initiate a new session). An OTG B-device may also request that the OTG A-device repower the VBUS supply (initiate a new session). This is accomplished via the Session Request Protocol (SRP). Prior to requesting a new session, the B-device must first check that the previous session has definitely ended. To do this, the B-device must check for two conditions: 1. VBUS supply is below the session valid voltage. 2. Both D+ and D- have been low for at least 2 ms. The B-device will be notified of Condition 1 by the SESENDIF (U1OTGIR<2>) interrupt. Software will have to manually check for Condition 2. Note: When the A-device powers down the VBUS supply, the B-device must disconnect its pull-up resistor from power. If the device is self-powered, it can do this by clearing DPPULUP (U1OTGCON<7>) and DMPULUP (U1OTGCON<6>). The B-device may aid in achieving Condition 1 by discharging the VBUS supply through a resistor. Software may do this by setting VBUSDIS (U1OTGCON<0>). After these initial conditions are met, the B-device may begin requesting the new session. The B-device begins by pulsing the D+ data line. Software should do this by setting DPPULUP (U1OTGCON<7>). The data line should be held high for 5 to 10 ms. The B-device then proceeds by pulsing the VBUS supply. Software should do this by setting PUVBUS (U1CNFG2<4>). When an A-device detects SRP signaling (either via the ATTACHIF (U1IR<6>) interrupt or via the SESVDIF (U1OTGIR<3>) interrupt), the A-device must restore the VBUS supply by either setting VBUSON (U1OTGCON<3>) or by setting the I/O port controlling the external power source. The B-device should not monitor the state of the VBUS supply while performing VBUS supply pulsing. When the B-device does detect that the VBUS supply has been restored (via the SESVDIF (U1OTGIR<3>) interrupt), the B-device must reconnect to the USB link by pulling up D+ or D- (via the DPPULUP or DMPULUP bits). The A-device must complete the SRP by driving USB Reset signaling. DS30005009C-page 278 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 19.6.2 HOST NEGOTIATION PROTOCOL (HNP) In USB OTG applications, a Dual Role Device (DRD) is a device that is capable of being either a host or a peripheral. Any OTG DRD must support Host Negotiation Protocol (HNP). HNP allows an OTG B-device to temporarily become the USB host. The A-device must first enable the B-device to follow HNP. Refer to the "On-The-Go Supplement" to the "USB 2.0 Specification" for more information regarding HNP. HNP may only be initiated at full speed. After being enabled for HNP by the A-device, the B-device requests being the host any time that the USB link is in suspend state by simply indicating a disconnect. This can be done in software by clearing DPPULUP and DMPULUP. When the A-device detects the disconnect condition (via the URSTIF (U1IR<0>) interrupt), the A-device may allow the B-device to take over as host. The A-device does this by signaling connect as a full-speed function. Software may accomplish this by setting DPPULUP. If the A-device responds instead with resume signaling, the A-device remains as host. When the B-device detects the connect condition (via ATTACHIF), the B-device becomes host. The B-device drives Reset signaling prior to using the bus. When the B-device has finished in its role as host, it stops all bus activity and turns on its D+ pull-up resistor by setting DPPULUP. When the A-device detects a suspend condition (Idle for 3 ms), the A-device turns off its D+ pull-up. The A-device may also power down the VBUS supply to end the session. When the A-device detects the connect condition (via ATTACHIF), the A-device resumes host operation and drives Reset signaling. 2013-2015 Microchip Technology Inc. 19.7 USB OTG Module Registers There are a total of 37 memory-mapped registers associated with the USB OTG module. They can be divided into four general categories: * * * * USB OTG Module Control (12) USB Interrupt (7) USB Endpoint Management (16) USB VBUS Power Control (2) This total does not include the (up to) 128 BD registers in the BDT. Their prototypes, described in Register 19-1 and Register 19-2, are shown separately in Section 19.2 "USB Buffer Descriptors and the BDT". All USB OTG registers are implemented in the Least Significant Byte of the register. Bits in the upper byte are unimplemented and have no function. Note that some registers are instantiated only in Host mode, while other registers have different bit instantiations and functions in Device and Host modes. The registers described in the following sections are those that have bits with specific control and configuration features. The following registers are used for data or address values only: * U1BDTP1: Specifies the 256-word page in data RAM used for the BDT; 8-bit value with bit 0 fixed as `0' for boundary alignment. * U1FRML and U1FRMH: Contain the 11-bit byte counter for the current data frame. DS30005009C-page 279 PIC24FJ128GB204 FAMILY 19.7.1 USB OTG MODULE CONTROL REGISTERS REGISTER 19-3: U1OTGSTAT: USB OTG STATUS REGISTER (HOST MODE ONLY) U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 15 bit 8 R-0, HSC U-0 R-0, HSC U-0 R-0, HSC R-0, HSC U-0 R-0, HSC ID -- LSTATE -- SESVD SESEND -- VBUSVD bit 7 bit 0 Legend: U = Unimplemented bit, read as `0' R = Readable bit W = Writable bit HSC = Hardware Settable/Clearable bit -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-8 Unimplemented: Read as `0' bit 7 ID: ID Pin State Indicator bit 1 = No plug is attached or a Type B cable has been plugged into the USB receptacle 0 = A Type A plug has been plugged into the USB receptacle bit 6 Unimplemented: Read as `0' bit 5 LSTATE: Line State Stable Indicator bit 1 = The USB line state (as defined by SE0 and JSTATE) has been stable for the previous 1 ms 0 = The USB line state has not been stable for the previous 1 ms bit 4 Unimplemented: Read as `0' bit 3 SESVD: Session Valid Indicator bit 1 = The VBUS voltage is above VA_SESS_VLD (as defined in the "USB 2.0 Specification") on the A or B-device 0 = The VBUS voltage is below VA_SESS_VLD on the A or B-device bit 2 SESEND: B Session End Indicator bit 1 = The VBUS voltage is below VB_SESS_END (as defined in the "USB 2.0 Specification") on the B-device 0 = The VBUS voltage is above VB_SESS_END on the B-device bit 1 Unimplemented: Read as `0' bit 0 VBUSVD: A VBUS Valid Indicator bit 1 = The VBUS voltage is above VA_VBUS_VLD (as defined in the "USB 2.0 Specification") on the A-device 0 = The VBUS voltage is below VA_VBUS_VLD on the A-device DS30005009C-page 280 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 19-4: U1OTGCON: USB OTG CONTROL REGISTER U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 15 bit 8 R/W-0 R/W-0 DPPULUP DMPULUP R/W-0 R/W-0 R/W-0 DPPULDWN(1) DMPULDWN(1) VBUSON(1) R/W-0 OTGEN(1) R/W-0 R/W-0 VBUSCHG(1) VBUSDIS(1) bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-8 Unimplemented: Read as `0' bit 7 DPPULUP: D+ Pull-up Enable bit 1 = D+ data line pull-up resistor is enabled 0 = D+ data line pull-up resistor is disabled bit 6 DMPULUP: D- Pull-up Enable bit 1 = D- data line pull-up resistor is enabled 0 = D- data line pull-up resistor is disabled bit 5 DPPULDWN: D+ Pull-Down Enable bit(1) 1 = D+ data line pull-down resistor is enabled 0 = D+ data line pull-down resistor is disabled bit 4 DMPULDWN: D- Pull-Down Enable bit(1) 1 = D- data line pull-down resistor is enabled 0 = D- data line pull-down resistor is disabled bit 3 VBUSON: VBUS Power-on bit(1) 1 = VBUS line is powered 0 = VBUS line is not powered bit 2 OTGEN: OTG Features Enable bit(1) 1 = USB OTG is enabled; all D+/D- pull-up and pull-down bits are enabled 0 = USB OTG is disabled; D+/D- pull-up and pull-down bits are controlled in hardware by the settings of the HOSTEN and USBEN (U1CON<3,0>) bits bit 1 VBUSCHG: VBUS Charge Select bit(1) 1 = VBUS line is set to charge to 3.3V 0 = VBUS line is set to charge to 5V bit 0 VBUSDIS: VBUS Discharge Enable bit(1) 1 = VBUS line is discharged through a resistor 0 = VBUS line is not discharged Note 1: These bits are only used in Host mode; do not use in Device mode. 2013-2015 Microchip Technology Inc. DS30005009C-page 281 PIC24FJ128GB204 FAMILY REGISTER 19-5: U1PWRC: USB POWER CONTROL REGISTER U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 15 bit 8 R/W-0, HS U-0 U-0 R/W-0 U-0 U-0 R/W-0, HC R/W-0 UACTPND -- -- USLPGRD -- -- USUSPND USBPWR bit 7 bit 0 Legend: HS = Hardware Settable bit HC = Hardware Clearable bit R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-8 Unimplemented: Read as `0' bit 7 UACTPND: USB Activity Pending bit 1 = Module should not be suspended at the moment (requires the USLPGRD bit to be set) 0 = Module may be suspended or powered down bit 6-5 Unimplemented: Read as `0' bit 4 USLPGRD: USB Sleep/Suspend Guard bit 1 = Indicates to the USB module that it is about to be suspended or powered down 0 = No suspend bit 3-2 Unimplemented: Read as `0' bit 1 USUSPND: USB Suspend Mode Enable bit 1 = USB OTG module is in Suspend mode; USB clock is gated and the transceiver is placed in a low-power state 0 = Normal USB OTG operation bit 0 USBPWR: USB Operation Enable bit 1 = USB OTG module is enabled 0 = USB OTG module is disabled(1) Note 1: Do not clear this bit unless the HOSTEN, USBEN and OTGEN bits (U1CON<3,0> and U1OTGCON<2>) are all cleared. DS30005009C-page 282 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 19-6: U1STAT: USB STATUS REGISTER U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 15 bit 8 R-0, HSC R-0, HSC R-0, HSC R-0, HSC R-0, HSC R-0, HSC U-0 U-0 ENDPT3 ENDPT2 ENDPT1 ENDPT0 DIR PPBI(1) -- -- bit 7 bit 0 Legend: U = Unimplemented bit, read as `0' R = Readable bit W = Writable bit HSC = Hardware Settable/Clearable bit -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-8 Unimplemented: Read as `0' bit 7-4 ENDPT<3:0>: Number of the Last Endpoint Activity bits (Represents the number of the BDT updated by the last USB transfer.) 1111 = Endpoint 15 1110 = Endpoint 14 * * * 0001 = Endpoint 1 0000 = Endpoint 0 bit 3 DIR: Last BD Direction Indicator bit 1 = The last transaction was a transmit transfer (TX) 0 = The last transaction was a receive transfer (RX) bit 2 PPBI: Ping-Pong BD Pointer Indicator bit(1) 1 = The last transaction was to the Odd BD bank 0 = The last transaction was to the Even BD bank bit 1-0 Unimplemented: Read as `0' Note 1: x = Bit is unknown This bit is only valid for endpoints with available Even and Odd BD registers. 2013-2015 Microchip Technology Inc. DS30005009C-page 283 PIC24FJ128GB204 FAMILY REGISTER 19-7: U1CON: USB CONTROL REGISTER (DEVICE MODE) U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 15 bit 8 U-0 R-x, HSC R/W-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 -- SE0 PKTDIS -- HOSTEN RESUME PPBRST USBEN bit 7 bit 0 Legend: U = Unimplemented bit, read as `0' R = Readable bit W = Writable bit HSC = Hardware Settable/Clearable bit -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-7 Unimplemented: Read as `0' bit 6 SE0: Live Single-Ended Zero Flag bit 1 = Single-ended zero is active on the USB bus 0 = No single-ended zero is detected bit 5 PKTDIS: Packet Transfer Disable bit 1 = SIE token and packet processing are disabled; automatically set when a SETUP token is received 0 = SIE token and packet processing are enabled bit 4 Unimplemented: Read as `0' bit 3 HOSTEN: Host Mode Enable bit 1 = USB host capability is enabled; pull-downs on D+ and D- are activated in hardware 0 = USB host capability is disabled bit 2 RESUME: Resume Signaling Enable bit 1 = Resume signaling is activated 0 = Resume signaling is disabled bit 1 PPBRST: Ping-Pong Buffers Reset bit 1 = Resets all Ping-Pong Buffer Pointers to the Even BD banks 0 = Ping-Pong Buffer Pointers are not reset bit 0 USBEN: USB Module Enable bit 1 = USB module and supporting circuitry are enabled (device attached); D+ pull-up is activated in hardware 0 = USB module and supporting circuitry are disabled (device detached) DS30005009C-page 284 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 19-8: U1CON: USB CONTROL REGISTER (HOST MODE ONLY) U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 15 bit 8 R-x, HSC R-x, HSC R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 JSTATE SE0 TOKBUSY USBRST HOSTEN RESUME PPBRST SOFEN bit 7 bit 0 Legend: U = Unimplemented bit, read as `0' R = Readable bit W = Writable bit HSC = Hardware Settable/Clearable bit -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-8 Unimplemented: Read as `0' bit 7 JSTATE: Live Differential Receiver J-State Flag bit 1 = J-state (differential `0' in low speed, differential `1' in full speed) is detected on the USB 0 = No J-state is detected bit 6 SE0: Live Single-Ended Zero Flag bit 1 = Single-ended zero is active on the USB bus 0 = No single-ended zero is detected bit 5 TOKBUSY: Token Busy Status bit 1 = Token is being executed by the USB module in the On-The-Go state 0 = No token is being executed bit 4 USBRST: USB Module Reset bit 1 = USB Reset is generated for software Reset; application must set this bit for 50 ms, then clear it 0 = USB Reset is terminated bit 3 HOSTEN: Host Mode Enable bit 1 = USB host capability is enabled; pull-downs on D+ and D- are activated in hardware 0 = USB host capability is disabled bit 2 RESUME: Resume Signaling Enable bit 1 = Resume signaling is activated; software must set bit for 10 ms and then clear to enable remote wake-up 0 = Resume signaling is disabled bit 1 PPBRST: Ping-Pong Buffers Reset bit 1 = Resets all Ping-Pong Buffer Pointers to the Even BD banks 0 = Ping-Pong Buffer Pointers are not reset bit 0 SOFEN: Start-of-Frame Enable bit 1 = Start-of-Frame token is sent every one 1 ms 0 = Start-of-Frame token is disabled 2013-2015 Microchip Technology Inc. DS30005009C-page 285 PIC24FJ128GB204 FAMILY REGISTER 19-9: U1ADDR: USB ADDRESS REGISTER U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 15 bit 8 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 LSPDEN(1) ADDR6 ADDR5 ADDR4 ADDR3 ADDR2 ADDR1 ADDR0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-8 Unimplemented: Read as `0' bit 7 LSPDEN: Low-Speed Enable Indicator bit(1) 1 = USB module operates at low speed 0 = USB module operates at full speed bit 6-0 ADDR<6:0>: USB Device Address bits Note 1: x = Bit is unknown Host mode only; in Device mode, this bit is unimplemented and read as `0'. REGISTER 19-10: U1TOK: USB TOKEN REGISTER (HOST MODE ONLY) U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 15 bit 8 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 PID3 PID2 PID1 PID0 EP3 EP2 EP1 EP0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-8 Unimplemented: Read as `0' bit 7-4 PID<3:0>: Token Type Identifier bits 1101 = SETUP (TX) token type transaction(1) 1001 = IN (RX) token type transaction(1) 0001 = OUT (TX) token type transaction(1) bit 3-0 EP<3:0>: Token Command Endpoint Address bits This value must specify a valid endpoint on the attached device. Note 1: x = Bit is unknown All other combinations are reserved and are not to be used. DS30005009C-page 286 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 19-11: U1SOF: USB OTG START-OF-FRAME COUNT REGISTER (HOST MODE ONLY) U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 15 bit 8 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 CNT<7:0> bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-8 Unimplemented: Read as `0' bit 7-0 CNT<7:0>: Start-of-Frame Size bits Value represents 10 + (packet size of n bytes). For example: 0100 1010 = 64-byte packet 0010 1010 = 32-byte packet 0001 0010 = 8-byte packet 2013-2015 Microchip Technology Inc. x = Bit is unknown DS30005009C-page 287 PIC24FJ128GB204 FAMILY REGISTER 19-12: U1CNFG1: USB CONFIGURATION REGISTER 1 U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 15 bit 8 R/W-0 R/W-0 U-0 R/W-0 U-0 U-0 R/W-0 R/W-0 UTEYE UOEMON(1) -- USBSIDL -- -- PPB1 PPB0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-8 Unimplemented: Read as `0' bit 7 UTEYE: USB Eye Pattern Test Enable bit 1 = Eye pattern test is enabled 0 = Eye pattern test is disabled bit 6 UOEMON: USB OE Monitor Enable bit(1) 1 = OE signal is active; it indicates intervals during which the D+/D- lines are driving 0 = OE signal is inactive bit 5 Unimplemented: Read as `0' bit 4 USBSIDL: USB OTG Stop in Idle Mode bit 1 = Discontinues module operation when the device enters Idle mode 0 = Continues module operation in Idle mode bit 3-2 Unimplemented: Read as `0' bit 1-0 PPB<1:0>: Ping-Pong Buffers Configuration bits 11 = Even/Odd Ping-Pong Buffers are enabled for Endpoints 1 to 15 10 = Even/Odd Ping-Pong Buffers are enabled for all endpoints 01 = Even/Odd Ping-Pong Buffers are enabled for OUT Endpoint 0 00 = Even/Odd Ping-Pong Buffers are disabled Note 1: This bit is only active when the UTRDIS bit (U1CNFG2<0>) is set. DS30005009C-page 288 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 19-13: U1CNFG2: USB CONFIGURATION REGISTER 2 U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 15 bit 8 U-0 U-0 -- -- U-0 -- R/W-0 PUVBUS R/W-0 R/W-0 U-0 R/W-0 EXTI2CEN UVBUSDIS(1) -- UTRDIS(1) bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-5 Unimplemented: Read as `0' bit 4 PUVBUS: VBUS Pull-up Enable bit 1 = Pull-up on VBUS pin is enabled 0 = Pull-up on VBUS pin is disabled bit 3 EXTI2CEN: I2CTM Interface for External Module Control Enable bit 1 = External module(s) is controlled via the I2C interface 0 = External module(s) is controlled via the dedicated pins bit 2 UVBUSDIS: USB On-Chip 5V Boost Regulator Builder Disable bit(1) 1 = On-chip boost regulator builder is disabled; digital output control interface is enabled 0 = On-chip boost regulator builder is active bit 1 Unimplemented: Read as `0' bit 0 UTRDIS: USB On-Chip Transceiver Disable bit(1) 1 = On-chip transceiver is disabled; digital transceiver interface is enabled 0 = On-chip transceiver is active Note 1: Never change these bits while the USBPWR bit is set (U1PWRC<0> = 1). 2013-2015 Microchip Technology Inc. DS30005009C-page 289 PIC24FJ128GB204 FAMILY 19.7.2 USB INTERRUPT REGISTERS REGISTER 19-14: U1OTGIR: USB OTG INTERRUPT STATUS REGISTER (HOST MODE ONLY) U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 15 bit 8 R/K-0, HS R/K-0, HS R/K-0, HS R/K-0, HS R/K-0, HS R/K-0, HS U-0 R/K-0, HS IDIF T1MSECIF LSTATEIF ACTVIF SESVDIF SESENDIF -- VBUSVDIF bit 7 bit 0 Legend: U = Unimplemented bit, read as `0' R = Readable bit K = Write `1' to Clear bit HS = Hardware Settable bit -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-8 Unimplemented: Read as `0' bit 7 IDIF: ID State Change Indicator bit 1 = Change in ID state is detected 0 = No ID state change is detected bit 6 T1MSECIF: 1 Millisecond Timer bit 1 = The 1 millisecond timer has expired 0 = The 1 millisecond timer has not expired bit 5 LSTATEIF: Line State Stable Indicator bit 1 = USB line state (as defined by the SE0 and JSTATE bits) has been stable for 1 ms, but different from the last time 0 = USB line state has not been stable for 1 ms bit 4 ACTVIF: Bus Activity Indicator bit 1 = Activity on the D+/D- lines or VBUS is detected 0 = No activity on the D+/D- lines or VBUS is detected bit 3 SESVDIF: Session Valid Change Indicator bit 1 = VBUS has crossed VA_SESS_END (as defined in the "USB 2.0 Specification")(1) 0 = VBUS has not crossed VA_SESS_END bit 2 SESENDIF: B-Device VBUS Change Indicator bit 1 = VBUS change on B-device is detected; VBUS has crossed VB_SESS_END (as defined in the "USB 2.0 Specification")(1) 0 = VBUS has not crossed VB_SESS_END bit 1 Unimplemented: Read as `0' bit 0 VBUSVDIF: A-Device VBUS Change Indicator bit 1 = VBUS change on A-device is detected; VBUS has crossed VA_VBUS_VLD (as defined in the "USB 2.0 Specification")(1) 0 = No VBUS change on the A-device is detected Note 1: Note: VBUS threshold crossings may be either rising or falling. Individual bits can only be cleared by writing a `1' to the bit position as part of a word write operation on the entire register. Using Boolean instructions or bitwise operations to write to a single bit position will cause all set bits, at the moment of the write, to become cleared. DS30005009C-page 290 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 19-15: U1OTGIE: USB OTG INTERRUPT ENABLE REGISTER (HOST MODE ONLY) U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 15 bit 8 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 U-0 R/W-0 IDIE T1MSECIE LSTATEIE ACTVIE SESVDIE SESENDIE -- VBUSVDIE bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-8 Unimplemented: Read as `0' bit 7 IDIE: ID Interrupt Enable bit 1 = Interrupt is enabled 0 = Interrupt is disabled bit 6 T1MSECIE: 1 Millisecond Timer Interrupt Enable bit 1 = Interrupt is enabled 0 = Interrupt is disabled bit 5 LSTATEIE: Line State Stable Interrupt Enable bit 1 = Interrupt is enabled 0 = Interrupt is disabled bit 4 ACTVIE: Bus Activity Interrupt Enable bit 1 = Interrupt is enabled 0 = Interrupt is disabled bit 3 SESVDIE: Session Valid Interrupt Enable bit 1 = Interrupt is enabled 0 = Interrupt is disabled bit 2 SESENDIE: B-Device Session End Interrupt Enable bit 1 = Interrupt is enabled 0 = Interrupt is disabled bit 1 Unimplemented: Read as `0' bit 0 VBUSVDIE: A-Device VBUS Valid Interrupt Enable bit 1 = Interrupt is enabled 0 = Interrupt is disabled 2013-2015 Microchip Technology Inc. x = Bit is unknown DS30005009C-page 291 PIC24FJ128GB204 FAMILY REGISTER 19-16: U1IR: USB INTERRUPT STATUS REGISTER (DEVICE MODE ONLY) U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 15 bit 8 R/K-0, HS U-0 R/K-0, HS R/K-0, HS R/K-0, HS R/K-0, HS R-0 R/K-0, HS STALLIF -- RESUMEIF IDLEIF TRNIF SOFIF UERRIF URSTIF bit 7 bit 0 Legend: U = Unimplemented bit, read as `0' R = Readable bit K = Write `1' to Clear bit HS = Hardware Settable bit -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-8 Unimplemented: Read as `0' bit 7 STALLIF: STALL Handshake Interrupt bit 1 = A STALL handshake was sent by the peripheral during the handshake phase of the transaction in Device mode 0 = A STALL handshake has not been sent bit 6 Unimplemented: Read as `0' bit 5 RESUMEIF: Resume Interrupt bit 1 = A K-state is observed on the D+ or D- pin for 2.5 s (differential `1' for low speed, differential `0' for full speed) 0 = No K-state is observed bit 4 IDLEIF: Idle Detect Interrupt bit 1 = Idle condition is detected (constant Idle state of 3 ms or more) 0 = No Idle condition is detected bit 3 TRNIF: Token Processing Complete Interrupt bit 1 = Processing of the current token is complete; read the U1STAT register for endpoint information 0 = Processing of the current token is not complete; clear the U1STAT register or load the next token from U1STAT (clearing this bit causes the U1STAT FIFO to advance) bit 2 SOFIF: Start-of-Frame Token Interrupt bit 1 = A Start-of-Frame token is received by the peripheral or the Start-of-Frame threshold is reached by the host 0 = No Start-of-Frame token is received or threshold reached bit 1 UERRIF: USB Error Condition Interrupt bit (read-only) 1 = An unmasked error condition has occurred; only error states enabled in the U1EIE register can set this bit 0 = No unmasked error condition has occurred bit 0 URSTIF: USB Reset Interrupt bit 1 = Valid USB Reset has occurred for at least 2.5 s; Reset state must be cleared before this bit can be reasserted 0 = No USB Reset has occurred. Individual bits can only be cleared by writing a `1' to the bit position as part of a word write operation on the entire register. Using Boolean instructions or bitwise operations to write to a single bit position will cause all set bits, at the moment of the write, to become cleared. Note: Individual bits can only be cleared by writing a `1' to the bit position as part of a word write operation on the entire register. Using Boolean instructions or bitwise operations to write to a single bit position will cause all set bits, at the moment of the write, to become cleared. DS30005009C-page 292 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 19-17: U1IR: USB INTERRUPT STATUS REGISTER (HOST MODE ONLY) U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 15 bit 8 R/K-0, HS R/K-0, HS R/K-0, HS R/K-0, HS R/K-0, HS R/K-0, HS R/K-0, HS R/K-0, HS STALLIF ATTACHIF RESUMEIF IDLEIF TRNIF SOFIF UERRIF DETACHIF bit 7 bit 0 Legend: U = Unimplemented bit, read as `0' R = Readable bit K = Write `1' to Clear bit HS = Hardware Settable bit -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-8 Unimplemented: Read as `0' bit 7 STALLIF: STALL Handshake Interrupt bit 1 = A STALL handshake was sent by the peripheral device during the handshake phase of the transaction in Device mode 0 = A STALL handshake has not been sent bit 6 ATTACHIF: Peripheral Attach Interrupt bit 1 = A peripheral attachment has been detected by the module; it is set if the bus state is not SE0 and there has been no bus activity for 2.5 s 0 = No peripheral attachment has been detected bit 5 RESUMEIF: Resume Interrupt bit 1 = A K-state is observed on the D+ or D- pin for 2.5 s (differential `1' for low speed, differential `0' for full speed) 0 = No K-state is observed bit 4 IDLEIF: Idle Detect Interrupt bit 1 = Idle condition is detected (constant Idle state of 3 ms or more) 0 = No Idle condition is detected bit 3 TRNIF: Token Processing Complete Interrupt bit 1 = Processing of the current token is complete; read the U1STAT register for endpoint information 0 = Processing of the current token is not complete; clear the U1STAT register or load the next token from U1STAT bit 2 SOFIF: Start-of-Frame Token Interrupt bit 1 = A Start-of-Frame token is received by the peripheral or the Start-of-Frame threshold is reached by the host 0 = No Start-of-Frame token is received or threshold is reached bit 1 UERRIF: USB Error Condition Interrupt bit 1 = An unmasked error condition has occurred; only error states enabled in the U1EIE register can set this bit 0 = No unmasked error condition has occurred bit 0 DETACHIF: Detach Interrupt bit 1 = A peripheral detachment has been detected by the module; Reset state must be cleared before this bit can be reasserted 0 = No peripheral detachment is detected. Individual bits can only be cleared by writing a `1' to the bit position as part of a word write operation on the entire register. Using Boolean instructions or bitwise operations to write to a single bit position will cause all set bits, at the moment of the write, to become cleared. Note: Individual bits can only be cleared by writing a `1' to the bit position as part of a word write operation on the entire register. Using Boolean instructions or bitwise operations to write to a single bit position will cause all set bits, at the moment of the write, to become cleared. 2013-2015 Microchip Technology Inc. DS30005009C-page 293 PIC24FJ128GB204 FAMILY REGISTER 19-18: U1IE: USB INTERRUPT ENABLE REGISTER (ALL USB MODES) U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 15 bit 8 R/K-0, HS STALLIE R/K-0, HS (1) ATTACHIE R/K-0, HS R/K-0, HS R/K-0, HS R/K-0, HS R/K-0, HS RESUMEIE IDLEIE TRNIE SOFIE UERRIE R/K-0, HS URSTIE DETACHIE(1) bit 7 bit 0 Legend: U = Unimplemented bit, read as `0' R = Readable bit K = Write `1' to Clear bit HS = Hardware Settable bit -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-8 Unimplemented: Read as `0' bit 7 STALLIE: STALL Handshake Interrupt Enable bit 1 = Interrupt is enabled 0 = Interrupt is disabled bit 6 ATTACHIE: Peripheral Attach Interrupt bit (Host mode only)(1) 1 = Interrupt is enabled 0 = Interrupt is disabled bit 5 RESUMEIE: Resume Interrupt bit 1 = Interrupt is enabled 0 = Interrupt is disabled bit 4 IDLEIE: Idle Detect Interrupt bit 1 = Interrupt is enabled 0 = Interrupt is disabled bit 3 TRNIE: Token Processing Complete Interrupt bit 1 = Interrupt is enabled 0 = Interrupt is disabled bit 2 SOFIE: Start-of-Frame Token Interrupt bit 1 = Interrupt is enabled 0 = Interrupt is disabled bit 1 UERRIE: USB Error Condition Interrupt bit 1 = Interrupt is enabled 0 = Interrupt is disabled bit 0 URSTIE or DETACHIE: USB Reset Interrupt (Device mode) or USB Detach Interrupt (Host mode) Enable bit(1) 1 = Interrupt is enabled 0 = Interrupt is disabled Note 1: x = Bit is unknown The ATTACHIE and DETACHIE bits are unimplemented in Device mode, read as `0'. DS30005009C-page 294 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 19-19: U1EIR: USB ERROR INTERRUPT STATUS REGISTER U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 15 bit 8 R/K-0, HS U-0 R/K-0, HS R/K-0, HS R/K-0, HS R/K-0, HS R/K-0, HS R/K-0, HS BTSEF -- DMAEF BTOEF DFN8EF CRC16EF CRC5EF PIDEF EOFEF bit 7 bit 0 Legend: U = Unimplemented bit, read as `0' R = Readable bit K = Write `1' to Clear bit HS = Hardware Settable bit -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-8 Unimplemented: Read as `0' bit 7 BTSEF: Bit Stuff Error Flag bit 1 = Bit stuff error has been detected 0 = No bit stuff error has been detected bit 6 Unimplemented: Read as `0' bit 5 DMAEF: DMA Error Flag bit 1 = A USB DMA error condition is detected; the data size indicated by the BD byte count field is less than the number of received bytes, the received data is truncated 0 = No DMA error bit 4 BTOEF: Bus Turnaround Time-out Error Flag bit 1 = Bus turnaround time-out has occurred 0 = No bus turnaround time-out bit 3 DFN8EF: Data Field Size Error Flag bit 1 = Data field was not an integral number of bytes 0 = Data field was an integral number of bytes bit 2 CRC16EF: CRC16 Failure Flag bit 1 = CRC16 failed 0 = CRC16 passed bit 1 For Device Mode: CRC5EF: CRC5 Host Error Flag bit 1 = Token packet is rejected due to CRC5 error 0 = Token packet is accepted (no CRC5 error) For Host Mode: EOFEF: End-of-Frame Error Flag bit 1 = End-of-Frame error has occurred 0 = End-of-Frame interrupt is disabled bit 0 PIDEF: PID Check Failure Flag bit 1 = PID check failed 0 = PID check passed Note: Individual bits can only be cleared by writing a `1' to the bit position as part of a word write operation on the entire register. Using Boolean instructions or bitwise operations to write to a single bit position will cause all set bits, at the moment of the write, to become cleared. 2013-2015 Microchip Technology Inc. DS30005009C-page 295 PIC24FJ128GB204 FAMILY REGISTER 19-20: U1EIE: USB ERROR INTERRUPT ENABLE REGISTER U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 15 bit 8 R/W-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 BTSEE -- DMAEE BTOEE DFN8EE CRC16EE CRC5EE PIDEE EOFEE bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-8 Unimplemented: Read as `0' bit 7 BTSEE: Bit Stuff Error Interrupt Enable bit 1 = Interrupt is enabled 0 = Interrupt is disabled bit 6 Unimplemented: Read as `0' bit 5 DMAEE: DMA Error Interrupt Enable bit 1 = Interrupt is enabled 0 = Interrupt is disabled bit 4 BTOEE: Bus Turnaround Time-out Error Interrupt Enable bit 1 = Interrupt is enabled 0 = Interrupt is disabled bit 3 DFN8EE: Data Field Size Error Interrupt Enable bit 1 = Interrupt is enabled 0 = Interrupt is disabled bit 2 CRC16EE: CRC16 Failure Interrupt Enable bit 1 = Interrupt is enabled 0 = Interrupt is disabled bit 1 For Device Mode: CRC5EE: CRC5 Host Error Interrupt Enable bit 1 = Interrupt is enabled 0 = Interrupt is disabled For Host Mode: EOFEE: End-of-Frame Error interrupt Enable bit 1 = Interrupt is enabled 0 = Interrupt is disabled bit 0 PIDEE: PID Check Failure Interrupt Enable bit 1 = Interrupt is enabled 0 = Interrupt is disabled DS30005009C-page 296 x = Bit is unknown 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 19.7.3 USB ENDPOINT MANAGEMENT REGISTERS REGISTER 19-21: U1EPn: USB ENDPOINT n CONTROL REGISTERS (n = 0 TO 15) U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 15 bit 8 R/W-0 R/W-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 LSPD(1) RETRYDIS(1) -- EPCONDIS EPRXEN EPTXEN EPSTALL EPHSHK bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-8 Unimplemented: Read as `0' bit 7 LSPD: Low-Speed Direct Connection Enable bit (U1EP0 only)(1) 1 = Direct connection to a low-speed device is enabled 0 = Direct connection to a low-speed device is disabled bit 6 RETRYDIS: Retry Disable bit (U1EP0 only)(1) 1 = Retry NAK transactions are disabled 0 = Retry NAK transactions are enabled; retry is done in hardware bit 5 Unimplemented: Read as `0' bit 4 EPCONDIS: Bidirectional Endpoint Control bit If EPTXEN and EPRXEN = 1: 1 = Disables Endpoint n from control transfers; only TX and RX transfers are allowed 0 = Enables Endpoint n for control (SETUP) transfers; TX and RX transfers are also allowed For All Other Combinations of EPTXEN and EPRXEN: This bit is ignored. bit 3 EPRXEN: Endpoint Receive Enable bit 1 = Endpoint n receive is enabled 0 = Endpoint n receive is disabled bit 2 EPTXEN: Endpoint Transmit Enable bit 1 = Endpoint n transmit is enabled 0 = Endpoint n transmit is disabled bit 1 EPSTALL: Endpoint STALL Status bit 1 = Endpoint n was STALLed 0 = Endpoint n was not STALLed bit 0 EPHSHK: Endpoint Handshake Enable bit 1 = Endpoint handshake is enabled 0 = Endpoint handshake is disabled (typically used for isochronous endpoints) Note 1: These bits are available only for U1EP0 and only in Host mode. For all other U1EPn registers, these bits are always unimplemented and read as `0'. 2013-2015 Microchip Technology Inc. DS30005009C-page 297 PIC24FJ128GB204 FAMILY NOTES: DS30005009C-page 298 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 20.0 DATA SIGNAL MODULATOR (DSM) Note: The modulated output signal is generated by performing a logical AND operation of both the carrier and modulator signals, and then it is provided to the MDOUT pin. Using this method, the DSM can generate the following types of key modulation schemes: This data sheet summarizes the features of this group of PIC24F devices. It is not intended to be a comprehensive reference source. For more information, refer to the "dsPIC33/PIC24 Family Reference Manual", "Data Signal Modulator (DSM)" (DS39744). The information in this data sheet supersedes the information in the FRM. * Frequency Shift Keying (FSK) * Phase-Shift Keying (PSK) * On-Off Keying (OOK) Figure 20-1 shows a simplified block diagram of the Data Signal Modulator peripheral. The Data Signal Modulator (DSM) allows the user to mix a digital data stream (the "modulator signal") with a carrier signal to produce a modulated output. Both the carrier and the modulator signals are supplied to the DSM module, either internally from the output of a peripheral, or externally through an input pin. FIGURE 20-1: SIMPLIFIED BLOCK DIAGRAM OF THE DATA SIGNAL MODULATOR CH<3:0> VSS MDCIN1 MDCIN2 REFO Clock OC/PWM1 OC/PWM2 OC/PWM3 OC/PWM4 OC/PWM5 OC/PWM6 MDEN EN Data Signal Modulator MDCARH CHPOL D SYNC MS<3:0> MDBIT MDMIN SSP1 (SDOx) SSP2 (SDOx) SSP3 (SDOx) UART1 (TX) UART2 (TX) UART3 (TX) UART4 (TX) OC/PWM1 OC/PWM2 OC/PWM3 OC/PWM4 OC/PWM5 OC/PWM6 Q 1 0 CHSYNC MDSRC MDOUT MDOPOL MDOE D SYNC CL<3:0> VSS MDCIN1 MDCIN2 REFO Clock OC/PWM1 OC/PWM2 OC/PWM3 OC/PWM4 OC/PWM5 OC/PWM6 Q 1 0 MDCARL 2013-2015 Microchip Technology Inc. CLSYNC CLPOL DS30005009C-page 299 PIC24FJ128GB204 FAMILY REGISTER 20-1: MDCON: DATA SIGNAL MODULATOR CONTROL REGISTER R/W-0 U-0 R/W-0 U-0 U-0 U-0 U-0 U-0 MDEN -- MDSIDL -- -- -- -- -- bit 15 bit 8 U-0 R/W-0 R/W-1 R/W-0 U-0 U-0 U-0 R/W-0 -- MDOE MDSLR MDOPOL -- -- -- MDBIT(1) bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15 MDEN: DSM Module Enable bit 1 = Modulator module is enabled and mixing input signals 0 = Modulator module is disabled and has no output bit 14 Unimplemented: Read as `0' bit 13 MDSIDL: DSM Stop in Idle Mode bit 1 = Discontinues module operation when device enters Idle mode 0 = Continues module operation in Idle mode bit 12-7 Unimplemented: Read as `0' bit 6 MDOE: DSM Module Pin Output Enable bit 1 = Modulator pin output is enabled 0 = Modulator pin output is disabled bit 5 MDSLR: MDOUT Pin Slew Rate Limiting bit 1 = MDOUT pin slew rate limiting is enabled 0 = MDOUT pin slew rate limiting is disabled bit 4 MDOPOL: DSM Output Polarity Select bit 1 = Modulator output signal is inverted 0 = Modulator output signal is not inverted bit 3-1 Unimplemented: Read as `0' bit 0 MDBIT: Manual Modulation Input bit(1) 1 = Carrier is modulated 0 = Carrier is not modulated Note 1: x = Bit is unknown The MDBIT must be selected as the modulation source (MDSRC<3:0> = 0000). DS30005009C-page 300 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 20-2: MDSRC: DATA SIGNAL MODULATOR SOURCE CONTROL REGISTER U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 15 bit 8 R/W-x (1) SODIS U-0 U-0 U-0 R/W-x R/W-x R/W-x R/W-x -- -- -- MS3(2) MS2(2) MS1(2) MS0(2) bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-8 Unimplemented: Read as `0' bit 7 SODIS: DSM Source Output Disable bit(1) 1 = Output signal driving the peripheral output pin (selected by MS<3:0>) is disabled 0 = Output signal driving the peripheral output pin (selected by MS<3:0>) is enabled bit 6-4 Unimplemented: Read as `0' bit 3-0 MS<3:0> DSM Source Selection bits(2) 1111 = Unimplemented 1110 = SPI3 module output (SDO3) 1101 = Output Compare/PWM Module 6 output 1100 = Output Compare/PWM Module 5 output 1011 = Output Compare/PWM Module 4 output 1010 = Output Compare/PWM Module 3 output 1001 = Output Compare/PWM Module 2 output 1000 = Output Compare/PWM Module 1 output 0111 = UART4 TX output 0110 = UART3 TX output 0101 = UART2 TX output 0100 = UART1 TX output 0011 = SPI2 module output (SDO2) 0010 = SPI1 module output (SDO1) 0001 = Input on MDMIN pin 0000 = Manual modulation using MDBIT (MDCON<0>) Note 1: 2: This bit is only affected by a POR. These bits are not affected by a POR. 2013-2015 Microchip Technology Inc. DS30005009C-page 301 PIC24FJ128GB204 FAMILY REGISTER 20-3: MDCAR: DATA SIGNAL MODULATOR CARRIER CONTROL REGISTER R/W-x R/W-x R/W-x U-0 R/W-x R/W-x R/W-x R/W-x CHODIS CHPOL CHSYNC -- CH3(1) CH2(1) CH1(1) CH0(1) bit 15 bit 8 R/W-0 R/W-x CLODIS CLPOL R/W-x CLSYNC U-0 -- R/W-x R/W-x R/W-x R/W-x (1) (1) (1) CL0(1) CL3 CL2 CL1 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15 CHODIS: DSM High Carrier Output Disable bit 1 = Output signal driving the peripheral output pin (selected by CH<3:0>) is disabled 0 = Output signal driving the peripheral output pin is enabled bit 14 CHPOL: DSM High Carrier Polarity Select bit 1 = Selected high carrier signal is inverted 0 = Selected high carrier signal is not inverted bit 13 CHSYNC: DSM High Carrier Synchronization Enable bit 1 = Modulator waits for a falling edge on the high carrier before allowing a switch to the low carrier 0 = Modulator output is not synchronized to the high time carrier signal(1) bit 12 Unimplemented: Read as `0' bit 11-8 CH<3:0> DSM Data High Carrier Selection bits(1) 1111 . . . = Reserved 1010 1001 = Output Compare/PWM Module 6 output 1000 = Output Compare/PWM Module 5 output 0111 = Output Compare/PWM Module 4 output 0110 = Output Compare/PWM Module 3 output 0101 = Output Compare/PWM Module 2 output 0100 = Output Compare/PWM Module 1 output 0011 = Reference Clock Output (REFO) 0010 = Input on MDCIN2 pin 0001 = Input on MDCIN1 pin 0000 = VSS bit 7 CLODIS: DSM Low Carrier Output Disable bit 1 = Output signal driving the peripheral output pin (selected by CL<3:0>) is disabled 0 = Output signal driving the peripheral output pin is enabled bit 6 CLPOL: DSM Low Carrier Polarity Select bit 1 = Selected low carrier signal is inverted 0 = Selected low carrier signal is not inverted bit 5 CLSYNC: DSM Low Carrier Synchronization Enable bit 1 = Modulator waits for a falling edge on the low carrier before allowing a switch to the high carrier 0 = Modulator output is not synchronized to the low time carrier signal(1) bit 4 Unimplemented: Read as `0' bit 3-0 CL<3:0>: DSM Data Low Carrier Selection bits(1) Bit settings are identical to those for CH<3:0>. Note 1: Narrowed carrier pulse widths or spurs may occur in the signal stream if the carrier is not synchronized. DS30005009C-page 302 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 21.0 Note: ENHANCED PARALLEL MASTER PORT (EPMP) This data sheet summarizes the features of this group of PIC24F devices. It is not intended to be a comprehensive reference source. For more information, refer to the "dsPIC33/PIC24 Family Reference Manual", "Enhanced Parallel Master Port (EPMP)" (DS39730). The information in this data sheet supersedes the information in the FRM. The Enhanced Parallel Master Port (EPMP) module provides a parallel, 4-bit (Master mode only) and 8-bit (Master and Slave modes) data bus interface to communicate with off-chip modules, such as memories, FIFOs, LCD controllers and other microcontrollers. This module can serve as either the master or the slave on the communication bus. For EPMP Master modes, all external addresses are mapped into the internal Extended Data Space (EDS). This is done by allocating a region of the EDS for each chip select and then assigning each chip select to a particular external resource, such as a memory or external controller. This region should not be assigned to another device resource, such as RAM or SFRs. To perform a write or read on an external resource, the CPU simply performs a write or read within the address range assigned for the EPMP. 2013-2015 Microchip Technology Inc. Key features of the EPMP module are: * Extended Data Space (EDS) Interface allows Direct Access from the CPU * Up to 10 Programmable Address Lines * Up to 2 Chip Select Lines * Up to 1 Acknowledgment Line (one per chip select) * 4-Bit and 8-Bit Wide Data Bus * Programmable Strobe Options (per chip select) - Individual Read and Write Strobes or; - Read/Write Strobe with Enable Strobe * Programmable Address/Data Multiplexing * Programmable Address Wait States * Programmable Data Wait States (per chip select) * Programmable Polarity on Control Signals (per chip select) * Legacy Parallel Slave Port (PSP) Support * Enhanced Parallel Slave Port Support - Address Support - 4-Byte Deep Auto-Incrementing Buffer 21.1 Memory Addressable in Different Modes The memory space addressable by the device depends on the address/data multiplexing selection; it varies from 1K to 2 MB. Refer to Table 21-1 for different Memory-Addressable modes. DS30005009C-page 303 PIC24FJ128GB204 FAMILY TABLE 21-1: MEMORY ADDRESSABLE IN DIFFERENT MODES Data Port Size PMA<9:8> PMA<7:0> PMD<7:4> PMD<3:0> Accessible Memory Demultiplexed Address (ADRMUX<1:0> = 00) 8-Bit (PTSZ<1:0> = 00) Addr<9:8> Addr<7:0> 4-Bit (PTSZ<1:0> = 01) Addr<9:8> Addr<7:0> Data -- 1K Data 1K 1 Address Phase (ADRMUX<1:0> = 01) 8-Bit (PTSZ<1:0> = 00) 4-Bit (PTSZ<1:0> = 01) -- Addr<9:8> PMALL PMALL Addr<7:0> Data Addr<7:4> Addr<3:0> -- Data (1) 1K 1K 2 Address Phases (ADRMUX<1:0> = 10) 8-Bit (PTSZ<1:0> = 00) 4-Bit (PTSZ<1:0> = 01) -- Addr<9:8> PMALL Addr<7:0> PMALH Addr<15:8> -- Data PMALL Addr<3:0> PMALH Addr<7:4> -- Data 64K 1K 3 Address Phases (ADRMUX<1:0> = 11) PMALL 8-Bit (PTSZ<1:0> = 00) 4-Bit (PTSZ<1:0> = 01) DS30005009C-page 304 -- Addr<13:12> Addr<7:0> PMALH Addr<15:8> PMALU Addr<22:16> -- Data PMALL Addr<3:0> PMALH Addr<7:4> PMALU Addr<11:8> -- Data 2 MB 16K 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY TABLE 21-2: ENHANCED PARALLEL MASTER PORT PIN DESCRIPTIONS Pin Name (Alternate Function) Type Description PMA<14> (PMCS1) O Address Bus bit 14 I/O Data Bus bit 14 (16-bit port with Multiplexed Addressing) O Chip Select 1 (alternate location) PMA<9:3> O Address Bus bits<9:3> PMA<2> (PMALU) O Address Bus bit 2 O Address Latch Upper Strobe for Multiplexed Address PMA<1> (PMALH) I/O Address Bus bit 1 O Address Latch High Strobe for Multiplexed Address PMA<0> (PMALL) I/O Address Bus bit 0 O Address Latch Low Strobe for Multiplexed Address I/O Data Bus bits<7:0>, Data bits<15:8> O Address Bus bits<7:0> PMCS1 I/O Chip Select 1 PMCS2 I/O Chip Select 2 PMWR I/O Write Strobe PMRD I/O Read Strobe PMBE1 O Byte Indicator PMBE0 O Nibble or Byte Indicator PMACK1 I Acknowledgment Signal 1 PMD<7:0> 2013-2015 Microchip Technology Inc. DS30005009C-page 305 PIC24FJ128GB204 FAMILY REGISTER 21-1: PMCON1: EPMP CONTROL REGISTER 1 R/W-0 PMPEN bit 15 U-0 -- R/W-0 PSIDL R/W-0 ADRMUX1 R/W-0 ADRMUX0 U-0 -- R/W-0 MODE1 R/W-0 MODE0 bit 8 R/W-0 CSF1 bit 7 R/W-0 CSF0 R/W-0 ALP R/W-0 ALMODE U-0 -- R/W-0 BUSKEEP R/W-0 IRQM1 R/W-0 IRQM0 bit 0 Legend: R = Readable bit -n = Value at POR bit 15 bit 14 bit 13 bit 12-11 bit 10 bit 9-8 bit 7-6 bit 5 bit 4 bit 3 bit 2 bit 1-0 W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown PMPEN: Enhanced Parallel Master Port Enable bit 1 = EPMP is enabled 0 = EPMP is disabled Unimplemented: Read as `0' PSIDL: PMP Stop in Idle Mode bit 1 = Discontinues module operation when device enters Idle mode 0 = Continues module operation in Idle mode ADRMUX<1:0>: Address/Data Multiplexing Selection bits 11 = Lower address bits are multiplexed with data bits using 3 address phases 10 = Lower address bits are multiplexed with data bits using 2 address phases 01 = Lower address bits are multiplexed with data bits using 1 address phase 00 = Address and data appear on separate pins Unimplemented: Read as `0' MODE<1:0>: Parallel Port Mode Select bits 11 = Master mode 10 = Enhanced PSP: Pins used are PMRD, PMWR, PMCS, PMD<7:0> and PMA<1:0> 01 = Buffered PSP: Pins used are PMRD, PMWR, PMCS and PMD<7:0> 00 = Legacy Parallel Slave Port: Pins used are PMRD, PMWR, PMCS and PMD<7:0> CSF<1:0>: Chip Select Function bits 11 = Reserved 10 = PMA<14> is used for Chip Select 1 01 = Reserved 00 = PMCS1 is used for Chip Select 1 ALP: Address Latch Polarity bit 1 = Active-high (PMALL, PMALH and PMALU) 0 = Active-low (PMALL, PMALH and PMALU) ALMODE: Address Latch Strobe Mode bit 1 = Enables "smart" address strobes (each address phase is only present if the current access would cause a different address in the latch than the previous address) 0 = Disables "smart" address strobes Unimplemented: Read as `0' BUSKEEP: Bus Keeper bit 1 = Data bus keeps its last value when not actively being driven 0 = Data bus is in a high-impedance state when not actively being driven IRQM<1:0>: Interrupt Request Mode bits 11 = Interrupt is generated when Read Buffer 3 is read or Write Buffer 3 is written (Buffered PSP mode), or on a read or write operation when PMA<1:0> = 11 (Addressable PSP mode only) 10 = Reserved 01 = Interrupt is generated at the end of a read/write cycle 00 = No interrupt is generated DS30005009C-page 306 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 21-2: PMCON2: EPMP CONTROL REGISTER 2 R-0, HSC U-0 R/C-0, HS R/C-0, HS U-0 U-0 U-0 U-0 PMPBUSY -- ERROR TIMEOUT -- -- -- -- bit 15 bit 8 R/W-0 R/W-0 RADDR23 (1) R/W-0 (1) RADDR22 RADDR21 R/W-0 (1) R/W-0 (1) RADDR20 RADDR19 R/W-0 (1) R/W-0 (1) RADDR18 RADDR17 R/W-0 (1) RADDR16(1) bit 7 bit 0 Legend: HS = Hardware Settable bit HSC = Hardware Settable/Clearable bit R = Readable bit W = Writable bit U = Unimplemented, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15 PMPBUSY: PMP Busy bit (Master mode only) 1 = Port is busy 0 = Port is not busy bit 14 Unimplemented: Read as `0' bit 13 ERROR: PMP Error bit 1 = Transaction error (illegal transaction was requested) 0 = Transaction completed successfully bit 12 TIMEOUT: PMP Time-out bit 1 = Transaction timed out 0 = Transaction completed successfully bit 11-8 Unimplemented: Read as `0' bit 7-0 RADDR<23:16>: Parallel Master Port Reserved Address Space bits(1) Note 1: C = Clearable bit If RADDR<23:16> = 00000000, then the last EDS address for Chip Select 2 will be FFFFFFh. 2013-2015 Microchip Technology Inc. DS30005009C-page 307 PIC24FJ128GB204 FAMILY REGISTER 21-3: PMCON3: EPMP CONTROL REGISTER 3 R/W-0 R/W-0 R/W-0 R/W-0 U-0 R/W-0 R/W-0 R/W-0 PTWREN PTRDEN PTBE1EN PTBE0EN -- AWAITM1 AWAITM0 AWAITE bit 15 bit 8 U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15 PTWREN: PMP Write/Enable Strobe Port Enable bit 1 = PMWR port is enabled 0 = PMWR port is disabled bit 14 PTRDEN: PMP Read/Write Strobe Port Enable bit 1 = PMRD/PMWR port is enabled 0 = PMRD/PMWR port is disabled bit 13 PTBE1EN: PMP High Nibble/Byte Enable Port Enable bit 1 = PMBE1 port is enabled 0 = PMBE1 port is disabled bit 12 PTBE0EN: PMP Low Nibble/Byte Enable Port Enable bit 1 = PMBE0 port is enabled 0 = PMBE0 port is disabled bit 11 Unimplemented: Read as `0' bit 10-9 AWAITM<1:0>: Address Latch Strobe Wait State bits 11 = Wait of 31/2 TCY 10 = Wait of 21/2 TCY 01 = Wait of 11/2 TCY 00 = Wait of 1/2 TCY bit 8 AWAITE: Address Hold After Address Latch Strobe Wait State bit 1 = Wait of 11/4 TCY 0 = Wait of 1/4 TCY bit 7-0 Unimplemented: Read as `0' DS30005009C-page 308 x = Bit is unknown 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 21-4: PMCON4: EPMP CONTROL REGISTER 4 U-0 R/W-0 U-0 U-0 U-0 U-0 -- PTEN14 -- -- -- -- R/W-0 R/W-0 PTEN<9:8> bit 15 bit 8 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 PTEN<7:3> R/W-0 R/W-0 PTEN<2:0> bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15 Unimplemented: Read as `0' bit 14 PTEN14: PMA14 Port Enable bit 1 = PMA14 functions as either Address Line 14 or Chip Select 1 0 = PMA14 functions as port I/O bit 13-10 Unimplemented: Read as `0' bit 9-3 PTEN<9:3>: EPMP Address Port Enable bits 1 = PMA<9:3> function as EPMP address lines 0 = PMA<9:3> function as port I/Os bit 2-0 PTEN<2:0>: PMALU/PMALH/PMALL Strobe Enable bits 1 = PMA<2:0> function as either address lines or address latch strobes 0 = PMA<2:0> function as port I/Os 2013-2015 Microchip Technology Inc. x = Bit is unknown DS30005009C-page 309 PIC24FJ128GB204 FAMILY REGISTER 21-5: R/W-0 CSDIS PMCSxCF: EPMP CHIP SELECT x CONFIGURATION REGISTER R/W-0 CSP R/W-0 CSPTEN R/W-0 BEP U-0 -- R/W-0 WRSP R/W-0 RDSP R/W-0 SM bit 15 bit 8 R/W-0 R/W-0 R/W-0 U-0 U-0 U-0 U-0 U-0 ACKP bit 7 PTSZ1 PTSZ0 -- -- -- -- -- bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15 bit 14 bit 13 bit 12 bit 11 bit 10 bit 9 bit 8 bit 7 bit 6-5 bit 4-0 x = Bit is unknown CSDIS: Chip Select x Disable bit 1 = Disables the Chip Select x functionality 0 = Enables the Chip Select x functionality CSP: Chip Select x Polarity bit 1 = Active-high (PMCSx) 0 = Active-low (PMCSx) CSPTEN: PMCSx Port Enable bit 1 = PMCSx port is enabled 0 = PMCSx port is disabled BEP: Chip Select x Nibble/Byte Enable Polarity bit 1 = Nibble/byte enable is active-high (PMBE0, PMBE1) 0 = Nibble/byte enable is active-low (PMBE0, PMBE1) Unimplemented: Read as `0' WRSP: Chip Select x Write Strobe Polarity bit For Slave Modes and Master Mode When SM = 0: 1 = Write strobe is active-high (PMWR) 0 = Write strobe is active-low (PMWR) For Master Mode When SM = 1: 1 = Enable strobe is active-high 0 = Enable strobe is active-low RDSP: Chip Select x Read Strobe Polarity bit For Slave Modes and Master Mode When SM = 0: 1 = Read strobe is active-high (PMRD) 0 = Read strobe is active-low (PMRD) For Master Mode When SM = 1: 1 = Read/write strobe is active-high (PMRD/PMWR) 0 = Read/write strobe is active-low (PMRD/PMWR) SM: Chip Select x Strobe Mode bit 1 = Read/write and enable strobes (PMRD/PMWR) 0 = Read and write strobes (PMRD and PMWR) ACKP: Chip Select x Acknowledge Polarity bit 1 = ACK is active-high (PMACK1) 0 = ACK is active-low (PMACK1) PTSZ<1:0>: Chip Select x Port Size bits 11 = Reserved 10 = Reserved 01 = 4-bit port size (PMD<3:0>) 00 = 8-bit port size (PMD<7:0>) Unimplemented: Read as `0' DS30005009C-page 310 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 21-6: R/W(1) PMCSxBS: EPMP CHIP SELECT x BASE ADDRESS REGISTER(2) R/W(1) R/W(1) R/W(1) R/W(1) R/W(1) R/W(1) R/W(1) BASE<23:16> bit 15 bit 8 R/W(1) U-0 U-0 U-0 R/W(1) U-0 U-0 U-0 BASE15 -- -- -- BASE11 -- -- -- bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-7 BASE<23:15>: Chip Select x Base Address bits(1) bit 6-4 Unimplemented: Read as `0' bit 3 BASE11: Chip Select x Base Address bit(1) bit 2-0 Unimplemented: Read as `0' Note 1: 2: x = Bit is unknown The value at POR is 0080h for PMCS1BS and 0880h for PMCS2BS. If the whole PMCS2BS register is written together as 0x0000, then the last EDS address for Chip Select 1 will be FFFFFFh. In this case, Chip Select 2 should not be used. PMCS1BS has no such feature. 2013-2015 Microchip Technology Inc. DS30005009C-page 311 PIC24FJ128GB204 FAMILY REGISTER 21-7: PMCSxMD: EPMP CHIP SELECT x MODE REGISTER R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 U-0 U-0 U-0 ACKM1 ACKM0 AMWAIT2 AMWAIT1 AMWAIT0 -- -- -- bit 15 bit 8 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 DWAITB1 DWAITB0 DWAITM3 DWAITM2 DWAITM1 DWAITM0 DWAITE1 DWAITE0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-14 ACKM<1:0>: Chip Select x Acknowledge Mode bits 11 = Reserved 10 = PMACKx is used to determine when a read/write operation is complete 01 = PMACKx is used to determine when a read/write operation is complete with time-out (If DWAITM<3:0> = 0000, the maximum time-out is 255 TCY or else it is DWAITM<3:0> cycles.) 00 = PMACKx is not used bit 13-11 AMWAIT<2:0>: Chip Select x Alternate Master Wait State bits 111 = Wait of 10 alternate master cycles * * * 001 = Wait of 4 alternate master cycles 000 = Wait of 3 alternate master cycles bit 10-8 Unimplemented: Read as `0' bit 7-6 DWAITB<1:0>: Chip Select x Data Setup Before Read/Write Strobe Wait State bits 11 = Wait of 31/4 TCY 10 = Wait of 21/4 TCY 01 = Wait of 11/4 TCY 00 = Wait of 1/4 TCY bit 5-2 DWAITM<3:0>: Chip Select x Data Read/Write Strobe Wait State bits For Write Operations: 1111 = Wait of 151/2 TCY * * * 0001 = Wait of 11/2 TCY 0000 = Wait of 1/2 TCY For Read Operations: 1111 = Wait of 153/4 TCY * * * 0001 = Wait of 13/4 TCY 0000 = Wait of 3/4 TCY DS30005009C-page 312 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 21-7: bit 1-0 PMCSxMD: EPMP CHIP SELECT x MODE REGISTER (CONTINUED) DWAITE<1:0>: Chip Select x Data Hold After Read/Write Strobe Wait State bits For Write Operations: 11 = Wait of 31/4 TCY 10 = Wait of 21/4 TCY 01 = Wait of 11/4 TCY 00 = Wait of 1/4 TCY For Read Operations: 11 = Wait of 3 TCY 10 = Wait of 2 TCY 01 = Wait of 1 TCY 00 = Wait of 0 TCY REGISTER 21-8: PMSTAT: EPMP STATUS REGISTER (SLAVE MODE ONLY) R-0, HSC R/W-0, HS U-0 U-0 R-0, HSC R-0, HSC R-0, HSC R-0, HSC IBF IBOV -- -- IB3F(1) IB2F(1) IB1F(1) IB0F(1) bit 15 bit 8 R-1, HSC R/W-0, HS U-0 U-0 R-1, HSC R-1, HSC R-1, HSC R-1, HSC OBE OBUF -- -- OB3E OB2E OB1E OB0E bit 7 bit 0 Legend: HS = Hardware Settable bit HSC = Hardware Settable/Clearable bit R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15 IBF: Input Buffer Full Status bit 1 = All writable Input Buffer registers are full 0 = Some or all of the writable Input Buffer registers are empty bit 14 IBOV: Input Buffer Overflow Status bit 1 = A write attempt to a full Input Buffer register occurred (must be cleared in software) 0 = No overflow occurred bit 13-12 Unimplemented: Read as `0' bit 11-8 IB3F:IB0F: Input Buffer x Status Full bits(1) 1 = Input buffer contains unread data (reading the buffer will clear this bit) 0 = Input buffer does not contain unread data bit 7 OBE: Output Buffer Empty Status bit 1 = All readable Output Buffer registers are empty 0 = Some or all of the readable Output Buffer registers are full bit 6 OBUF: Output Buffer Underflow Status bit 1 = A read occurred from an empty Output Buffer register (must be cleared in software) 0 = No underflow occurred bit 5-4 Unimplemented: Read as `0' bit 3-0 OB3E:OB0E: Output Buffer x Status Empty bits 1 = Output Buffer register is empty (writing data to the buffer will clear this bit) 0 = Output Buffer register contains untransmitted data Note 1: Even though an individual bit represents the byte in the buffer, the bits corresponding to the word (Byte 0 and 1, or Byte 2 and 3) get cleared, even on byte reading. 2013-2015 Microchip Technology Inc. DS30005009C-page 313 PIC24FJ128GB204 FAMILY REGISTER 21-9: PADCFG1: PAD CONFIGURATION CONTROL REGISTER U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 15 bit 8 U-0 U-0 U-0 U-0 U-0 U-0 U-0 R/W-0 -- -- -- -- -- -- -- PMPTTL bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-1 Unimplemented: Read as `0' bit 0 PMPTTL: EPMP Module TTL Input Buffer Select bit 1 = EPMP module inputs (PMDx, PMCS1) use TTL input buffers 0 = EPMP module inputs use Schmitt Trigger input buffers DS30005009C-page 314 x = Bit is unknown 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 22.0 Note: REAL-TIME CLOCK AND CALENDAR (RTCC) * BCD format for smaller software overhead * Optimized for long-term battery operation * User calibration of the 32.768 kHz clock crystal/32K INTRC frequency with periodic auto-adjust * Optimized for long-term battery operation * Fractional second synchronization * Calibration to within 2.64 seconds error per month * Calibrates up to 260 ppm of crystal error * Ability to periodically wake up external devices without CPU intervention (external power control) * Power control output for external circuit control * Calibration takes effect every 15 seconds * Runs from any one of the following: - External Real-Time Clock (RTC) of 32.768 kHz - Internal 31.25 kHz LPRC clock - 50 Hz or 60 Hz external input This data sheet summarizes the features of this group of PIC24F devices. It is not intended to be a comprehensive reference source. For more information on the Real-Time Clock and Calendar, refer to the "dsPIC33/PIC24 Family Reference Manual", "RTCC with External Power Control" (DS39745). The RTCC provides the user with a Real-Time Clock and Calendar (RTCC) function that can be calibrated. Key features of the RTCC module are: * Operates in Deep Sleep mode * Selectable clock source * Provides hours, minutes and seconds using 24-hour format * Visibility of one half second period * Provides calendar - weekday, date, month and year * Alarm-configurable for half a second, one second, 10 seconds, one minute, 10 minutes, one hour, one day, one week, one month or one year * Alarm repeat with decrementing counter * Alarm with indefinite repeat chime * Year 2000 to 2099 leap year correction FIGURE 22-1: Input from SOSC/LPRC Oscillator or External Source 22.1 RTCC Source Clock The user can select between the SOSC crystal oscillator, LPRC internal oscillator or an external 50 Hz/60 Hz power line input as the clock reference for the RTCC module. This gives the user an option to trade off system cost, accuracy and power consumption, based on the overall system needs. RTCC BLOCK DIAGRAM RTCC Clock Domain CPU Clock Domain RCFGCAL RTCC Prescalers ALCFGRPT YEAR MTHDY WKDYHR MINSEC 0.5 Seconds Alarm Event RTCC Timer RTCVAL Comparator RTCPWC Alarm Registers with Masks ALRMVAL ALMTHDY ALWDHR ALMINSEC RTCCSWT Repeat Counter RTCC Interrupt RTCOUT<1:0> RTCC Interrupt and Power Control Logic Power Control Alarm Pulse 1s Clock Source 2013-2015 Microchip Technology Inc. 11 RTCOE 00 01 10 RTCC Pin DS30005009C-page 315 PIC24FJ128GB204 FAMILY 22.2 RTCC Module Registers TABLE 22-2: The RTCC module registers are organized into three categories: ALRMPTR <1:0> * RTCC Control Registers * RTCC Value Registers * Alarm Value Registers 22.2.1 To limit the register interface, the RTCC Timer and Alarm Time registers are accessed through corresponding register pointers. The RTCC Value register window (RTCVALH and RTCVALL) uses the RTCPTRx bits (RCFGCAL<9:8>) to select the desired Timer register pair (see Table 22-1). RTCVAL<7:0> 00 MINUTES SECONDS 01 WEEKDAY HOURS 10 MONTH DAY 11 -- YEAR ALRMWD ALRMHR ALRMMNTH ALRMDAY 11 -- -- This only applies to read operations and not write operations. WRITE LOCK In order to perform a write to any of the RTCC Timer registers, the RTCWREN bit (RCFGCAL<13>) must be set (see Example 22-1). Note: The Alarm Value register window (ALRMVALH and ALRMVALL) uses the ALRMPTRx bits (ALCFGRPT<9:8>) to select the desired Alarm register pair (see Table 22-2). 22.2.3 By writing the ALRMVALH byte, the ALRMPTR<1:0> bits (the Alarm Pointer value) decrement by one until they reach `00'. Once they reach `00', the ALRMMIN and ALRMSEC value will be accessible through ALRMVALH and ALRMVALL until the pointer value is manually changed. To avoid accidental writes to the timer, it is recommended that the RTCWREN bit (RCFGCAL<13>) is kept clear at any other time. For the RTCWREN bit to be set, there is only one instruction cycle time window allowed between the 55h/AA sequence and the setting of RTCWREN; therefore, it is recommended that code follow the procedure in Example 22-1. SELECTING RTCC CLOCK SOURCE The clock source for the RTCC module can be selected using the RTCLK<1:0> bits in the RTCPWC register. When the bits are set to `00', the Secondary Oscillator (SOSC) is used as the reference clock and when the bits are `01', LPRC is used as the reference clock. When RTCLK<1:0> = 10 and 11, the external power line (50 Hz and 60 Hz) is used as the clock source. SETTING THE RTCWREN BIT volatile("push w7"); volatile("push w8"); volatile("disi #5"); volatile("mov #0x55, w7"); volatile("mov w7, _NVMKEY"); volatile("mov #0xAA, w8"); volatile("mov w8, _NVMKEY"); volatile("bset _RCFGCAL, #13"); volatile("pop w8"); volatile("pop w7"); DS30005009C-page 316 ALRMSEC 10 22.2.2 RTCC Value Register Window RTCVAL<15:8> asm asm asm asm asm asm asm asm asm asm ALRMMIN 01 Note: RTCVAL REGISTER MAPPING EXAMPLE 22-1: ALRMVAL<15:8> ALRMVAL<7:0> Considering that the 16-bit core does not distinguish between 8-bit and 16-bit read operations, the user must be aware that when reading either the ALRMVALH or ALRMVALL bytes, the ALRMPTR<1:0> value will be decremented. The same applies to the RTCVALH or RTCVALL bytes with the RTCPTR<1:0> being decremented. By writing the RTCVALH byte, the RTCPTR<1:0> bits (the RTCC Pointer value) decrement by one until they reach `00'. Once they reach `00', the MINUTES and SECONDS value will be accessible through RTCVALH and RTCVALL until the pointer value is manually changed. RTCPTR<1:0> Alarm Value Register Window 00 REGISTER MAPPING TABLE 22-1: ALRMVAL REGISTER MAPPING //set the RTCWREN bit 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 22.3 Registers 22.3.1 RTCC CONTROL REGISTERS REGISTER 22-1: RCFGCAL: RTCC CALIBRATION/CONFIGURATION REGISTER(1) R/W-0 U-0 R/W-0 R-0, HSC R-0, HSC R/W-0 R/W-0 R/W-0 RTCEN(2) -- RTCWREN RTCSYNC HALFSEC(3) RTCOE RTCPTR1 RTCPTR0 bit 15 bit 8 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 CAL7 CAL6 CAL5 CAL4 CAL3 CAL2 CAL1 CAL0 bit 7 bit 0 Legend: HSC = Hardware Settable/Clearable bit R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15 RTCEN: RTCC Enable bit(2) 1 = RTCC module is enabled 0 = RTCC module is disabled bit 14 Unimplemented: Read as `0' bit 13 RTCWREN: RTCC Value Registers Write Enable bit 1 = RTCVALH and RTCVALL registers can be written to by the user 0 = RTCVALH and RTCVALL registers are locked out from being written to by the user bit 12 RTCSYNC: RTCC Value Registers Read Synchronization bit 1 = RTCVALH, RTCVALL and ALCFGRPT registers can change while reading due to a rollover ripple resulting in an invalid data read. If the register is read twice and results in the same data, the data can be assumed to be valid. 0 = RTCVALH, RTCVALL or ALCFGRPT registers can be read without concern over a rollover ripple bit 11 HALFSEC: Half Second Status bit(3) 1 = Second half period of a second 0 = First half period of a second bit 10 RTCOE: RTCC Output Enable bit 1 = RTCC output is enabled 0 = RTCC output is disabled bit 9-8 RTCPTR<1:0>: RTCC Value Register Window Pointer bits Points to the corresponding RTCC Value registers when reading the RTCVALH and RTCVALL registers. The RTCPTR<1:0> value decrements on every read or write of RTCVALH until it reaches `00'. RTCVAL<15:8>: 11 = Reserved 10 = MONTH 01 = WEEKDAY 00 = MINUTES RTCVAL<7:0>: 11 = YEAR 10 = DAY 01 = HOURS 00 = SECONDS Note 1: 2: 3: The RCFGCAL register is only affected by a POR. A write to the RTCEN bit is only allowed when RTCWREN = 1. This bit is read-only; it is cleared to `0' on a write to the lower half of the MINSEC register. 2013-2015 Microchip Technology Inc. DS30005009C-page 317 PIC24FJ128GB204 FAMILY REGISTER 22-1: bit 7-0 Note 1: 2: 3: RCFGCAL: RTCC CALIBRATION/CONFIGURATION REGISTER(1) (CONTINUED) CAL<7:0>: RTC Drift Calibration bits 01111111 = Maximum positive adjustment; adds 127 RTC clock pulses every 15 seconds * * * 00000001 = Minimum positive adjustment; adds 1 RTC clock pulse every 15 seconds 00000000 = No adjustment 11111111 = Minimum negative adjustment; subtracts 1 RTC clock pulse every 15 seconds * * * 10000000 = Maximum negative adjustment; subtracts 128 RTC clock pulses every 15 seconds The RCFGCAL register is only affected by a POR. A write to the RTCEN bit is only allowed when RTCWREN = 1. This bit is read-only; it is cleared to `0' on a write to the lower half of the MINSEC register. DS30005009C-page 318 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 22-2: R/W-0 PWCEN RTCPWC: RTCC POWER CONTROL REGISTER(1) R/W-0 PWCPOL R/W-0 PWCPRE R/W-0 PWSPRE R/W-0 RTCLK1 R/W-0 (2) RTCLK0 (2) R/W-0 R/W-0 RTCOUT1 RTCOUT0 bit 15 bit 8 U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15 PWCEN: Power Control Enable bit 1 = Power control is enabled 0 = Power control is disabled bit 14 PWCPOL: Power Control Polarity bit 1 = Power control output is active-high 0 = Power control output is active-low bit 13 PWCPRE: Power Control/Stability Prescaler bit 1 = PWC stability window clock is divide-by-2 of source RTCC clock 0 = PWC stability window clock is divide-by-1 of source RTCC clock bit 12 PWSPRE: Power Control Sample Prescaler bit 1 = PWC sample window clock is divide-by-2 of source RTCC clock 0 = PWC sample window clock is divide-by-1 of source RTCC clock bit 11-10 RTCLK<1:0>: RTCC Clock Source Select bits(2) 11 = External power line (60 Hz) 10 = External power line source (50 Hz) 01 = Internal LPRC Oscillator 00 = External Secondary Oscillator (SOSC) bit 9-8 RTCOUT<1:0>: RTCC Output Source Select bits 11 = Power control 10 = RTCC clock 01 = RTCC seconds clock 00 = RTCC alarm pulse bit 7-0 Unimplemented: Read as `0' Note 1: 2: x = Bit is unknown The RTCPWC register is only affected by a POR. When a new value is written to these register bits, the lower half of the MINSEC register should also be written to properly reset the clock prescalers in the RTCC. 2013-2015 Microchip Technology Inc. DS30005009C-page 319 PIC24FJ128GB204 FAMILY REGISTER 22-3: ALCFGRPT: ALARM CONFIGURATION REGISTER R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 ALRMEN CHIME AMASK3 AMASK2 AMASK1 AMASK0 ALRMPTR1 ALRMPTR0 bit 15 bit 8 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 ARPT7 ARPT6 ARPT5 ARPT4 ARPT3 ARPT2 ARPT1 ARPT0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15 ALRMEN: Alarm Enable bit 1 = Alarm is enabled (cleared automatically after an alarm event whenever ARPT<7:0> = 00h and CHIME = 0) 0 = Alarm is disabled bit 14 CHIME: Chime Enable bit 1 = Chime is enabled; ARPT<7:0> bits are allowed to roll over from 00h to FFh 0 = Chime is disabled; ARPT<7:0> bits stop once they reach 00h bit 13-10 AMASK<3:0>: Alarm Mask Configuration bits 0000 = Every half second 0001 = Every second 0010 = Every 10 seconds 0011 = Every minute 0100 = Every 10 minutes 0101 = Every hour 0110 = Once a day 0111 = Once a week 1000 = Once a month 1001 = Once a year (except when configured for February 29th, once every 4 years) 101x = Reserved - do not use 11xx = Reserved - do not use bit 9-8 ALRMPTR<1:0>: Alarm Value Register Window Pointer bits Points to the corresponding Alarm Value registers when reading the ALRMVALH and ALRMVALL registers. The ALRMPTR<1:0> value decrements on every read or write of ALRMVALH until it reaches `00'. ALRMVAL<15:8>: 00 = ALRMMIN 01 = ALRMWD 10 = ALRMMNTH 11 = PWCSTAB ALRMVAL<7:0>: 00 = ALRMSEC 01 = ALRMHR 10 = ALRMDAY 11 = PWCSAMP bit 7-0 ARPT<7:0>: Alarm Repeat Counter Value bits 11111111 = Alarm will repeat 255 more times * * * 00000000 = Alarm will not repeat The counter decrements on any alarm event; it is prevented from rolling over from 00h to FFh unless CHIME = 1. DS30005009C-page 320 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 22.3.2 RTCVAL REGISTER MAPPINGS REGISTER 22-4: YEAR: YEAR VALUE REGISTER(1) U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 15 bit 8 R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x YRTEN3 YRTEN2 YRTEN1 YRTEN0 YRONE3 YRONE2 YRONE1 YRONE0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-8 Unimplemented: Read as `0' bit 7-4 YRTEN<3:0>: Binary Coded Decimal Value of Year's Tens Digit bits Contains a value from 0 to 9. bit 3-0 YRONE<3:0>: Binary Coded Decimal Value of Year's Ones Digit bits Contains a value from 0 to 9. Note 1: A write to the YEAR register is only allowed when RTCWREN = 1. REGISTER 22-5: MTHDY: MONTH AND DAY VALUE REGISTER(1) U-0 U-0 U-0 R/W-x R/W-x R/W-x R/W-x R/W-x -- -- -- MTHTEN0 MTHONE3 MTHONE2 MTHONE1 MTHONE0 bit 15 bit 8 U-0 U-0 R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x -- -- DAYTEN1 DAYTEN0 DAYONE3 DAYONE2 DAYONE1 DAYONE0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-13 Unimplemented: Read as `0' bit 12 MTHTEN0: Binary Coded Decimal Value of Month's Tens Digit bit Contains a value of `0' or `1'. bit 11-8 MTHONE<3:0>: Binary Coded Decimal Value of Month's Ones Digit bits Contains a value from 0 to 9. bit 7-6 Unimplemented: Read as `0' bit 5-4 DAYTEN<1:0>: Binary Coded Decimal Value of Day's Tens Digit bits Contains a value from 0 to 3. bit 3-0 DAYONE<3:0>: Binary Coded Decimal Value of Day's Ones Digit bits Contains a value from 0 to 9. Note 1: x = Bit is unknown A write to this register is only allowed when RTCWREN = 1. 2013-2015 Microchip Technology Inc. DS30005009C-page 321 PIC24FJ128GB204 FAMILY WKDYHR: WEEKDAY AND HOURS VALUE REGISTER(1) REGISTER 22-6: U-0 U-0 U-0 U-0 U-0 R/W-x R/W-x R/W-x -- -- -- -- -- WDAY2 WDAY1 WDAY0 bit 15 bit 8 U-0 U-0 R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x -- -- HRTEN1 HRTEN0 HRONE3 HRONE2 HRONE1 HRONE0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-11 Unimplemented: Read as `0' bit 10-8 WDAY<2:0>: Binary Coded Decimal Value of Weekday Digit bits Contains a value from 0 to 6. bit 7-6 Unimplemented: Read as `0' bit 5-4 HRTEN<1:0>: Binary Coded Decimal Value of Hour's Tens Digit bits Contains a value from 0 to 2. bit 3-0 HRONE<3:0>: Binary Coded Decimal Value of Hour's Ones Digit bits Contains a value from 0 to 9. Note 1: A write to this register is only allowed when RTCWREN = 1. REGISTER 22-7: MINSEC: MINUTES AND SECONDS VALUE REGISTER U-0 R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x -- MINTEN2 MINTEN1 MINTEN0 MINONE3 MINONE2 MINONE1 MINONE0 bit 15 bit 8 U-0 R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x -- SECTEN2 SECTEN1 SECTEN0 SECONE3 SECONE2 SECONE1 SECONE0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15 Unimplemented: Read as `0' bit 14-12 MINTEN<2:0>: Binary Coded Decimal Value of Minute's Tens Digit bits Contains a value from 0 to 5. bit 11-8 MINONE<3:0>: Binary Coded Decimal Value of Minute's Ones Digit bits Contains a value from 0 to 9. bit 7 Unimplemented: Read as `0' bit 6-4 SECTEN<2:0>: Binary Coded Decimal Value of Second's Tens Digit bits Contains a value from 0 to 5. bit 3-0 SECONE<3:0>: Binary Coded Decimal Value of Second's Ones Digit bits Contains a value from 0 to 9. DS30005009C-page 322 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 22.3.3 ALRMVAL REGISTER MAPPINGS REGISTER 22-8: ALMTHDY: ALARM MONTH AND DAY VALUE REGISTER(1) U-0 -- bit 15 U-0 -- U-0 -- R/W-x MTHTEN0 R/W-x MTHONE3 R/W-x MTHONE2 R/W-x MTHONE1 R/W-x MTHONE0 bit 8 U-0 -- U-0 -- R/W-x DAYTEN1 R/W-x DAYTEN0 R/W-x DAYONE3 R/W-x DAYONE2 R/W-x DAYONE1 R/W-x DAYONE0 bit 0 bit 7 Legend: R = Readable bit -n = Value at POR bit 15-13 bit 12 bit 11-8 bit 7-6 bit 5-4 bit 3-0 Note 1: W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown Unimplemented: Read as `0' MTHTEN0: Binary Coded Decimal Value of Month's Tens Digit bit Contains a value of `0' or `1'. MTHONE<3:0>: Binary Coded Decimal Value of Month's Ones Digit bits Contains a value from 0 to 9. Unimplemented: Read as `0' DAYTEN<1:0>: Binary Coded Decimal Value of Day's Tens Digit bits Contains a value from 0 to 3. DAYONE<3:0>: Binary Coded Decimal Value of Day's Ones Digit bits Contains a value from 0 to 9. A write to this register is only allowed when RTCWREN = 1. REGISTER 22-9: ALWDHR: ALARM WEEKDAY AND HOURS VALUE REGISTER(1) U-0 -- bit 15 U-0 -- U-0 -- U-0 -- U-0 -- R/W-x WDAY2 R/W-x WDAY1 R/W-x WDAY0 bit 8 U-0 -- U-0 -- R/W-x HRTEN1 R/W-x HRTEN0 R/W-x HRONE3 R/W-x HRONE2 R/W-x HRONE1 R/W-x HRONE0 bit 0 bit 7 Legend: R = Readable bit -n = Value at POR bit 15-11 bit 10-8 bit 7-6 bit 5-4 bit 3-0 Note 1: W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown Unimplemented: Read as `0' WDAY<2:0>: Binary Coded Decimal Value of Weekday Digit bits Contains a value from 0 to 6. Unimplemented: Read as `0' HRTEN<1:0>: Binary Coded Decimal Value of Hour's Tens Digit bits Contains a value from 0 to 2. HRONE<3:0>: Binary Coded Decimal Value of Hour's Ones Digit bits Contains a value from 0 to 9. A write to this register is only allowed when RTCWREN = 1. 2013-2015 Microchip Technology Inc. DS30005009C-page 323 PIC24FJ128GB204 FAMILY REGISTER 22-10: ALMINSEC: ALARM MINUTES AND SECONDS VALUE REGISTER U-0 R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x -- MINTEN2 MINTEN1 MINTEN0 MINONE3 MINONE2 MINONE1 MINONE0 bit 15 bit 8 U-0 R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x -- SECTEN2 SECTEN1 SECTEN0 SECONE3 SECONE2 SECONE1 SECONE0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15 Unimplemented: Read as `0' bit 14-12 MINTEN<2:0>: Binary Coded Decimal Value of Minute's Tens Digit bits Contains a value from 0 to 5. bit 11-8 MINONE<3:0>: Binary Coded Decimal Value of Minute's Ones Digit bits Contains a value from 0 to 9. bit 7 Unimplemented: Read as `0' bit 6-4 SECTEN<2:0>: Binary Coded Decimal Value of Second's Tens Digit bits Contains a value from 0 to 5. bit 3-0 SECONE<3:0>: Binary Coded Decimal Value of Second's Ones Digit bits Contains a value from 0 to 9. DS30005009C-page 324 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 22-11: RTCCSWT: RTCC POWER CONTROL AND SAMPLE WINDOW TIMER REGISTER(1) R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x PWCSTAB7 PWCSTAB6 PWCSTAB5 PWCSTAB4 PWCSTAB3 PWCSTAB2 PWCSTAB1 PWCSTAB0 bit 15 bit 8 R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x PWCSAMP7(2) PWCSAMP6(2) PWCSAMP5(2) PWCSAMP4(2) PWCSAMP3(2) PWCSAMP2(2) PWCSAMP1(2) PWCSAMP0(2) bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-8 PWCSTAB<7:0>: Power Control Stability Window Timer bits 11111111 = Stability window is 255 TPWCCLK clock periods 11111110 = Stability window is 254 TPWCCLK clock periods * * * 00000001 = Stability window is 1 TPWCCLK clock period 00000000 = No stability window; sample window starts when the alarm event triggers bit 7-0 PWCSAMP<7:0>: Power Control Sample Window Timer bits(2) 11111111 = Sample window is always enabled, even when PWCEN = 0 11111110 = Sample window is 254 TPWCCLK clock periods * * * 00000001 = Sample window is 1 TPWCCLK clock period 00000000 = No sample window Note 1: 2: A write to this register is only allowed when RTCWREN = 1. The sample window always starts when the stability window timer expires, except when its initial value is 00h. 2013-2015 Microchip Technology Inc. DS30005009C-page 325 PIC24FJ128GB204 FAMILY 22.4 Calibration The real-time crystal input can be calibrated using the periodic auto-adjust feature. When properly calibrated, the RTCC can provide an error of less than 3 seconds per month. This is accomplished by finding the number of error clock pulses and storing the value into the lower half of the RCFGCAL register. The 8-bit signed value loaded into the lower half of RCFGCAL is multiplied by four and will either be added or subtracted from the RTCC timer, once every minute. Refer to the steps below for RTCC calibration: 1. 2. 3. Using another timer resource on the device, the user must find the error of the 32.768 kHz crystal. Once the error is known, it must be converted to the number of error clock pulses per minute. a) If the oscillator is faster than ideal (negative result form Step 2), the RCFGCAL register value must be negative. This causes the specified number of clock pulses to be subtracted from the timer counter, once every minute. b) If the oscillator is slower than ideal (positive result from Step 2), the RCFGCAL register value must be positive. This causes the specified number of clock pulses to be subtracted from the timer counter, once every minute. EQUATION 22-1: (Ideal Frequency - Measured Frequency) * 60 = Clocks per Minute Ideal Frequency = 32,768 Hz Writes to the lower half of the RCFGCAL register should only occur when the timer is turned off, or immediately after the rising edge of the seconds pulse, except when SECONDS = 00, 15, 30 or 45. This is due to the auto-adjust of the RTCC at 15 second intervals. Note: 22.5 It is up to the user to include, in the error value, the initial error of the crystal: drift due to temperature and drift due to crystal aging. Alarm * Configurable from half second to one year * Enabled using the ALRMEN bit (ALCFGRPT<15>) * One-time alarm and repeat alarm options available DS30005009C-page 326 22.5.1 CONFIGURING THE ALARM The alarm feature is enabled using the ALRMEN bit. This bit is cleared when an alarm is issued. Writes to ALRMVAL should only take place when ALRMEN = 0. As shown in Figure 22-2, the interval selection of the alarm is configured through the AMASKx bits (ALCFGRPT<13:10>). These bits determine which and how many digits of the alarm must match the clock value for the alarm to occur. The alarm can also be configured to repeat based on a preconfigured interval. The amount of times this occurs, once the alarm is enabled, is stored in the ARPT<7:0> bits (ALCFGRPT<7:0>). When the value of the ARPTx bits equals 00h and the CHIME bit (ALCFGRPT<14>) is cleared, the repeat function is disabled and only a single alarm will occur. The alarm can be repeated, up to 255 times, by loading ARPT<7:0> with FFh. After each alarm is issued, the value of the ARPTx bits is decremented by one. Once the value has reached 00h, the alarm will be issued one last time, after which, the ALRMEN bit will be cleared automatically and the alarm will turn off. Indefinite repetition of the alarm can occur if the CHIME bit = 1. Instead of the alarm being disabled when the value of the ARPTx bits reaches 00h, it rolls over to FFh and continues counting indefinitely while CHIME is set. 22.5.2 ALARM INTERRUPT At every alarm event, an interrupt is generated. In addition, an alarm pulse output is provided that operates at half the frequency of the alarm. This output is completely synchronous to the RTCC clock and can be used as a trigger clock to other peripherals. Note: Changing any of the registers, other than the RCFGCAL and ALCFGRPT registers, and the CHIME bit while the alarm is enabled (ALRMEN = 1), can result in a false alarm event leading to a false alarm interrupt. To avoid a false alarm event, the timer and alarm values should only be changed while the alarm is disabled (ALRMEN = 0). It is recommended that the ALCFGRPT register and CHIME bit be changed when RTCSYNC = 0. 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY FIGURE 22-2: ALARM MASK SETTINGS Alarm Mask Setting (AMASK<3:0>) Day of the Week Month Day Hours Minutes Seconds 0000 - Every half second 0001 - Every second 0010 - Every 10 seconds s 0011 - Every minute s s m s s m m s s 0100 - Every 10 minutes 0101 - Every hour 0110 - Every day 0111 - Every week d 1000 - Every month 1001 - Every year(1) Note 1: 22.6 m h m m s s h h m m s s d d h h m m s s d d h h m m s s Annually, except when configured for February 29. Power Control The RTCC includes a power control feature that allows the device to periodically wake-up an external device, wait for the device to be stable before sampling wake-up events from that device and then shut down the external device. This can be done completely autonomously by the RTCC, without the need to wake from the current lower power mode (Sleep, Deep Sleep, etc.). To use this feature: 1. 2. 3. m h Enable the RTCC (RTCEN = 1). Set the PWCEN bit (RTCPWC<15>). Configure the RTCC pin to drive the PWC control signal (RTCOE = 1 and RTCOUT<1:0> = 11). The polarity of the PWC control signal may be chosen using the PWCPOL bit (RTCPWC<14>). An active-low or active-high signal may be used with the appropriate external switch to turn on or off the power to one or 2013-2015 Microchip Technology Inc. more external devices. The active-low setting may also be used in conjunction with an open-drain setting on the RTCC pin, in order to drive the ground pin(s) of the external device directly (with the appropriate external VDD pull-up device), without the need for external switches. Finally, the CHIME bit should be set to enable the PWC periodicity. 22.7 RTCC VBAT Operation The RTCC can operate in VBAT mode when there is a power loss on the VDD pin. The RTCC will continue to operate if the VBAT pin is powered on (it is usually connected to the battery). Note: It is recommended to connect the VBAT pin to VDD if the VBAT mode is not used (not connected to the battery). DS30005009C-page 327 PIC24FJ128GB204 FAMILY NOTES: DS30005009C-page 328 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 23.0 Note: CRYPTOGRAPHIC ENGINE This data sheet summarizes the features of the PIC24FJ128GB204 family of devices. It is not intended to be a comprehensive reference source. To complement the information in this data sheet, refer to the "dsPIC33/PIC24 Family Reference Manual", "Cryptographic Engine" (DS70005133), which is available from the Microchip web site (www.microchip.com). The Cryptographic Engine provides a new set of data security options. Using its own free-standing state machines, the engine can independently perform NIS standard encryption and decryption of data independently of the CPU. This eliminates the concerns of excessive CPU or program memory overhead that encryption and decryption would otherwise require, while enhancing the application's security. The primary features of the Cryptographic Engine are: * Memory-mapped 128-bit and 256-bit memory spaces for encryption/decryption data * Multiple options for key storage, selection and management FIGURE 23-1: * * * * * * * * Support for internal context saving Session key encryption and loading Half-duplex operation DES and Triple DES (3DES) encryption and decryption (64-bit block size): - Supports 64-bit keys and 2-key or 3-key Triple DES AES encryption and decryption (128-bit block size): - Supports key sizes of 128, 192 or 256 bits Supports ECB, CBC, CFB, OFB and CTR modes for both DES and AES standards Programmatically secure key storage: - 512-bit OTP array for key storage, not readable from other memory spaces - 32-bit Configuration Page - Simple in-module programming interface - Supports Key Encryption Key (KEK) Support for True and Psuedorandom Number Generation (PRNG), NIST SP800-90 compliant A simplified block diagram of the Cryptographic Engine is shown in Figure 23-1. CRYPTOGRAPHIC ENGINE BLOCK DIAGRAM CRYCONH CRYCONL Cryptographic and OTP Control CRYSTAT CRYOTP CFGPAGE OTP Key Store and Configuration Mapped to SFR Space OTP Programming Key Management CRYKEY 256 Bits CRYTXTA 128 Bits CRYTXTB 128 Bits DES Engine AES Engine CRYTXTC 128 Bits 2013-2015 Microchip Technology Inc. DS30005009C-page 329 PIC24FJ128GB204 FAMILY 23.1 Data Register Spaces There are four register spaces used for cryptographic data and key storage: * * * * CRYTXTA CRYTXTB CRYTXTC CRYKEY Although mapped into the SFR space, all of these Data Spaces are actually implemented as 128-bit or 256-bit wide arrays, rather than groups of 16-bit wide Data registers. Reads and writes to and from these arrays are automatically handled as if they were any other register in the SFR space. CRYTXTA through CRYTXTC are 128-bit wide spaces; they are used for writing data to and reading from the Cryptographic Engine. Additionally, they are also used for storing intermediate results of the encryption/decryption operation. None of these registers may be written to when the module is performing an operation (CRYGO = 1). CRYTXTA and CRYTXTB normally serve as inputs to the encryption/decryption process. CRYTXTA usually contains the initial plaintext or ciphertext to be encrypted or decrypted. Depending on the mode of operation, CRYTXTB may contain the ciphertext output or intermediate cipher data. It may also function as a programmable length counter in certain operations. CRYTXTC is primarily used to store the final output of an encryption/decryption operation. It is also used as the input register for data to be programmed to the secure OTP array. CRYKEY is a 256-bit wide space, used to store cryptographic keys for the selected operation. It is writable from both the SFR space and the secure OTP array. Although mapped into the SFR space, it is a write-only memory area; any data placed here, regardless of its source, cannot be read back by any run-time operations. This feature helps to ensure the security of any key data. 23.2 Modes of Operation The Cryptographic Engine supports the following modes of operation, determined by the OPMOD<3:0> bits: * * * * * * * Block Encryption Block Decryption AES Decryption Key Expansion Random Number Generation Session Key Generation Session Key Encryption Session Key Loading The OPMODx bits may be changed while CRYON is set. They should only be changed when a cryptographic operation is not being done (CRYGO = 0). Once the encryption operation, and the appropriate and valid key configuration is selected, the operation is performed by setting the CRYGO bit. This bit is automatically DS30005009C-page 330 cleared by hardware when the operation is complete. The CRYGO bit can also be manually cleared by software; this causes any operation in progress to terminate immediately. Clearing this bit in software also sets the CRYABRT bit (CRYSTAT<5>). For most operations, CRYGO can only be set when an OTP operation is not being performed and there are no other error conditions. CRYREAD, CRYWR, CRYABRT, ROLLOVR, MODFAIL and KEYFAIL must all be `0'. Setting CRYWR and CRYGO simultaneously will not initiate an OTP programming operation or any other operation. Setting CRYGO when the module is disabled (CRYON = 0) also has no effect. 23.3 Enabling the Engine The Cryptographic Engine is enabled by setting the CRYON bit. Clearing this bit disables both the DES and AES engines, as well as causing the following register bits to be held in Reset: * CRYGO (CRYCONL<8>) * TXTABSY (CRYSTAT<6>) * CRYWR (CRYOTP<0>) All other register bits and registers may be read and written while CRYON = 0. 23.4 23.4.1 Operation During Sleep and Idle Modes OPERATION DURING SLEEP MODES Whenever the device enters any Sleep or Deep Sleep mode, all operation engine state machines are reset. This feature helps to preserve the integrity, or any data being encrypted or decrypted, by discarding any intermediate text that might be used to break the key. Any OTP programming operations under way when a Sleep mode is entered are also halted. Depending on what is being programmed, this may result in permanent loss of a memory location or potentially, the use of the entire secure OTP array. Users are advised to perform OTP programming only when entry into power-saving modes is disabled. Note: 23.4.2 OTP programming errors, regardless of the source, are not recoverable errors. Users should ensure that all foreseeable interruptions to the programming operation, including device interrupts and entry into power-saving modes, are disabled. OPERATION DURING IDLE MODE When the CRYSIDL bit (CRYCONL<13>) is `0', the engine will continue any ongoing operations without interruption when the device enters Idle mode. When CRYSIDL is `1', the module behaves as in Sleep modes. 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 23.5 Specific Cryptographic Operations This section provides the step-wise details for each operation type that is available with the Cryptographic Engine. 23.5.1 ENCRYPTING DATA If not already set, set the CRYON bit. Configure the CPHRSEL, CPHRMODx, KEYMODx and KEYSRCx bits as desired to select the proper mode and key length. 3. Set OPMOD<3:0> to `0000'. 4. If a software key is being used, write it to the CRYKEY register. It is only necessary to write the lowest n bits of CRYKEY for a key length of n, as all unused CRYKEY bits are ignored. 5. Read the KEYFAIL bit. If this bit is `1', an illegal configuration has been selected and the encrypt operation will NOT be performed. 6. Write the data to be encrypted to the appropriate CRYTXT register. For a single DES encrypt operation, it is only necessary to write the lowest 64 bits. However, for data less than the block size (64 bits for DES, 128 bits for AES), it is the responsibility of the software to properly pad the upper bits within the block. 7. Set the CRYGO bit. 8. In ECB and CBC modes, set the FREEIE bit (CRYCONL<10>) to enable the optional CRYTXTA interrupt to indicate when the next plaintext block can be loaded. 9. Poll the CRYGO bit until it is cleared or wait for the CRYDNIF module interrupt (DONEIE must be set). If other Cryptographic Engine interrupts are enabled, it will be necessary to poll the CRYGO bit to verify the interrupt source. 10. Read the encrypted block from the appropriate CRYTXT register. 11. Repeat Steps 5 through 8 to encrypt further blocks in the message with the same key. 23.5.2 1. 2. 3. 4. 1. 2. 5. 6. 7. 8. 9. 10. 11. 12. 13. 2013-2015 Microchip Technology Inc. DECRYPTING DATA If not already set, set the CRYON bit. Configure the CPHRSEL, CPHRMODx, KEYMODx and KEYSRCx bits as desired to select the proper mode and key length. Set OPMOD<3:0> to `0001'. If a software key is being used, write the CRYKEY register. It is only necessary to write the lowest n bits of CRYKEY for a key length of n, as all unused CRYKEY bits are ignored. If an AES-ECB or AES-CBC mode decryption is being performed, you must first perform an AES decryption key expansion operation. Read the KEYFAIL status bit. If this bit is `1', an illegal configuration has been selected and the encrypt operation will not be performed. Write the data to be decrypted into the appropriate text/data register. For a DES decrypt operation, it is only necessary to write the lowest 64 bits of CRYTXTB. Set the CRYGO bit. If this is the first decrypt operation after a Reset, or if a key storage program operation was performed after the last decrypt operation, or if the KEYMODx or KEYSRCx fields are changed, the engine will perform a new key expansion operation. This will result in extra clock cycles for the decrypt operation, but will otherwise be transparent to the application (i.e., the CRYGO bit will be cleared only after the key expansion and the decrypt operation have completed). In ECB and CBC modes, set the FREEIE bit (CRYCONL<10>) to enable the optional CRYTXTA interrupt to indicate when the next plaintext block can be loaded. Poll the CRYGO bit until it is cleared or wait for the CRYDNIF module interrupt (DONEIE must be set). If other Cryptographic Engine interrupts are enabled, it will be necessary to poll the CRYGO bit to verify the interrupt source. Read the decrypted block out of the appropriate text/data register. Repeat Steps 6 through 10 to encrypt further blocks in the message with the same key. DS30005009C-page 331 PIC24FJ128GB204 FAMILY 23.5.3 Note: 1. 2. ENCRYPTING A SESSION KEY Note: ECB and CBC modes are restricted to 128-bit session keys only. If not already set, set the CRYON bit. If not already programmed, program the SKEYEN bit to `1'. Note: 23.5.4 1. 2. 3. 4. Set OPMOD<3:0> to `1110'. Configure the CPHRSEL, CPHRMOD<2:0> and KEYMOD<1:0> register bit fields as desired, set SKEYSEL to `0'. 5. Read the KEYFAIL status bit. If this bit is `1', an illegal configuration has been selected, and the encrypt operation will not be performed. 6. Write the software generated session key into the CRYKEY register or generate a random key into the CRYKEY register. It is only necessary to write the lowest n bits of CRYKEY for a key length of n, as all unused key bits are ignored. 7. Set the CRYGO bit. Poll the bit until it is cleared by hardware; alternatively, set the DONEIE bit (CRYCONL<11>) to generate an interrupt when the encryption is done. 8. Read the encrypted session key out of the appropriate CRYTXT register. 9. For total key lengths of more than 128 bits, set SKEYSEL to `1' and repeat Steps 6 and 7. 10. Set KEYSRC<3:0> to `0000' to use the session key to encrypt data. DS30005009C-page 332 3. 4. 5. 6. 7. 8. 9. ECB and CBC modes are restricted to 128-bit session keys only. If not already set, set the CRYON bit. If not already programmed, program the SKEYEN bit to `1'. Note: Setting SKEYEN permanently makes Key #1 available as a Key Encryption Key only. It cannot be used for other encryption or decryption operations after that. RECEIVING A SESSION KEY Setting SKEYEN permanently makes Key #1 available as a Key Encryption Key only. It cannot be used for other encryption or decryption operations after that. It also permanently disables the ability of software to decrypt the session key into the CRYTXTA register, thereby breaking programmatic security (i.e., software can read the unencrypted key). Set OPMOD<3:0> to `1111'. Configure the CPHRSEL, CPHRMOD<2:0> and KEYMOD<1:0> register bit fields as desired, set SKEYSEL to `0'. Read the KEYFAIL status bit. If this bit is `1', an illegal configuration has been selected and the encrypt operation will NOT be performed. Write the encrypted session key received into the appropriate CRYTXT register. Set the CRYGO bit. Poll the bit until it is cleared by hardware; alternatively, set the DONEIE bit (CRYCONL<11>) to generate an interrupt when the process is done. For total key lengths of more than 128 bits, set SKEYSEL to `1' and repeat Steps 6 and 7. Set KEYSRC<3:0> to `0000' to use the newly generated session key to encrypt and decrypt data. 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 23.5.5 GENERATING A PSEUDORANDOM NUMBER (PRN) For operations that require a Pseudorandom Number (PRN), the method outlined in NIST SP800-90 can be adapted for efficient use with the Cryptographic Engine. This method uses the AES algorithm in CTR mode to create PRNs with minimal CPU overhead. PRNs generated in this manner can be used for cryptographic purposes or any other purpose that the host application may require. The random numbers used as initial seeds can be taken from any source convenient to the user's application. If possible, a non-deterministic random number source should be used. Note: PRN generation is not available when software keys are disabled (SWKYDIS = 1). To perform the initial reseeding operation, and subsequent reseedings after the reseeding interval has expired: 1. 2. Store a random number (128 bits) in CRYTXTA. For the initial generation ONLY, use a key value of 0h (128 bits), and a counter value of 0h. 3. Configure the engine for AES encryption, CTR mode (OPMOD<3:0> = 0000, CPHRSEL = 1, CPHMOD<2:0> = 100). 4. Perform an encrypt operation by setting CRYGO. 5. Move the results in CRYTXTC to RAM. This is the new key value (NEW_KEY). 6. Store another random number (128 bits) in CRYTXTA. 7. Configure the module for encryption as in Step 3. 8. Perform an encrypt operation by setting CRYGO. 9. Store this value in RAM. This is the new counter value (NEW_CTR). 10. For subsequent reseeding operations, use NEW_KEY and NEW_CTR for the starting key and counter values. 2013-2015 Microchip Technology Inc. To generate the pseudorandom number: 1. 2. 3. 4. Load NEW_KEY value from RAM into CRYKEY. Load NEW_CTR value from RAM into CRYTXTB. Load CRYTXTA with 0h (128 bits). Configure the engine for AES encryption, CTR mode (OPMOD<3:0> = 0000, CPHRSEL = 1, CPHMOD<2:0> = 100). 5. Perform an encrypt operation by setting CRYGO. 6. Copy the generated PRN in CRYTXTC (PRNG_VALUE) to RAM. 7. Repeat the encrypt operation. 8. Store the value of CRYTXTC from this round as the new value of NEW_KEY. 9. Repeat the encrypt operation. 10. Store the value of CRYTXTC from this round as the new value of NEW_CTR. Subsequent PRNs can be generated by repeating this procedure until the reseeding interval has expired. At that point, the reseeding operation is performed using the stored values of NEW_KEY and NEW_CTR. 23.5.6 1. 2. 3. 4. 5. GENERATING A RANDOM NUMBER Enable the Cryptographic mode (CRYON (CRYCONL<15>) = 1). Set the OPMOD<3:0> bits to `1010'. Start the request by setting the CRYGO bit (CRYCONL<8>) to `1'. Wait for the CRYGO bit to be cleared to `0' by the hardware. Read the random number from the CRYTXTA register. 23.5.7 TESTING THE KEY SOURCE CONFIGURATION The validity of the key source configuration can always be tested by writing the appropriate register bits and then reading the KEYFAIL register bit. No operation needs to be started to perform this check; the module does not even need to be enabled. DS30005009C-page 333 PIC24FJ128GB204 FAMILY 23.5.8 1. 2. 3. 4. 5. If not already set, set the CRYON bit. Set KEYPG<3:0> to `0000'. Read the PGMFAIL status bit. If this bit is `1', an illegal configuration has been selected and the programming operation will not be performed. Write the data to be programmed into the Configuration Page into CRYTXTC<31:0>. Any bits that are set (`1') will be permanently programmed, while any bits that are cleared (`0') will not be programmed and may be programmed at a later time. Set the CRYWR bit. Poll the bit until it is cleared; alternatively, set the OTPIE bit (CRYOTP<6>) to enable the optional OTP done interrupt. Once all programming has completed, set the CRYREAD bit to reload the values from the on-chip storage. A read operation must be performed to complete programming. Note: 6. 7. PROGRAMMING CFGPAGE (PAGE 0) CONFIGURATION BITS 1. 2. 3. 4. 5. 6. 7. Do not clear the CRYON bit while the CRYREAD bit is set; this will result in an incomplete read operation and unavailable key data. To recover, set CRYON and CRYREAD, and allow the read operation to fully complete. Poll the CRYREAD bit until it is cleared; alternatively, set the OTPIE bit (CRYOTP<6>) to enable the optional OTP done interrupt. For production programming, the TSTPGM bit can be set to indicate a successful programming operation. When TSTPGM is set, the PGMTST bit (CRYOTP<7>) will also be set, allowing users to see the OTP array status with performing a read operation on the array. Note: 23.5.9 If the device enters Sleep mode during OTP programming, the contents of the OTP array may become corrupted. This is not a recoverable error. Users must ensure that entry into power-saving modes is disabled before OTP programming is performed. If not already set, set the CRYON bit. Configure KEYPG<3:0> to the page you want to program. Read the PGMFAIL status bit. If this bit is `1', an illegal configuration has been selected and the programming operation will not be performed. Write the data to be programmed into the Configuration Page into CRYTXTC<63:0>. Any bits that are set (`1') will be permanently programmed, while any bits that are cleared (`0') will not be programmed and may be programmed at a later time. Set the CRYWR bit. Poll the bit until it is cleared; alternatively, set the OTPIE bit (CRYOTP<6>) to enable the optional OTP done interrupt. Repeat Steps 2 through 5 for each OTP array page to be programmed. Once all programming has completed, set the CRYREAD bit to reload the values from the on-chip storage. A read operation must be performed to complete programming. Note: 8. 9. PROGRAMMING KEYS Do not clear the CRYON bit while the CRYREAD bit is set; this will result in an incomplete read operation and unavailable key data. To recover, set CRYON and CRYREAD, and allow the read operation to fully complete. Poll the CRYREAD bit until it is cleared; alternatively, set the OTPIE bit (CRYOTP<6>) to enable the optional OTP done interrupt. For production programming, the TSTPGM bit can be set to indicate a successful programming operation. When TSTPGM is set, the PGMTST bit (CRYOTP<7>) will also be set, allowing users to see the OTP array status with performing a read operation on the array. Note: 23.5.10 If the device enters Sleep Mode during OTP programming, the contents of the OTP array may become corrupted. This is not a recoverable error. Users must ensure that entry into power-saving modes is disabled before OTP programming is performed. VERIFYING PROGRAMMED KEYS To maintain key security, the secure OTP array has no provision to read back its data to any user-accessible memory space in any operating mode. Therefore, there is no way to directly verify programmed data. The only method for verifying that they have been programmed correctly is to perform an encryption operation with a known plaintext/ciphertext pair for each programmed key. DS30005009C-page 334 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 23.6 Control Registers REGISTER 23-1: CRYCONL: CRYPTOGRAPHIC CONTROL LOW REGISTER R/W-0 U-0 R/W-0 R/W-0(1) R/W-0(1) R/W-0(1) U-0 R/W-0, HC(1) CRYON -- CRYSIDL(3) ROLLIE DONEIE FREEIE -- CRYGO bit 15 R/W-0(1) bit 8 R/W-0(1) R/W-0(1) R/W-0(1) R/W-0(1) R/W-0(1) R/W-0(1) R/W-0(1) OPMOD3(2) OPMOD2(2) OPMOD1(2) OPMOD0(2) CPHRSEL(2) CPHRMOD2(2) CPHRMOD1(2) CPHRMOD0(2) bit 7 bit 0 Legend: HC = Hardware Clearable bit R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15 CRYON: Cryptographic Enable bit 1 = Module is enabled 0 = Module is disabled bit 14 Unimplemented: Read as `0' bit 13 CRYSIDL: Cryptographic Stop in Idle Control bit(3) 1 = Stops module operation in Idle mode 0 = Continues module operation in Idle mode bit 12 ROLLIE: CRYTXTB Rollover Interrupt Enable bit(1) 1 = Generates an interrupt event when the counter portion of CRYTXTB rolls over to `0' 0 = Does not generate an interrupt event when the counter portion of CRYTXTB rolls over to `0' bit 11 DONEIE: Operation Done Interrupt Enable bit(1) 1 = Generates an interrupt event when the current cryptographic operation completes 0 = Does not generate an interrupt event when the current cryptographic operation completes; software must poll the CRYGO or CRYBSY bit to determine when current cryptographic operation is complete bit 10 FREEIE: Input Text Interrupt Enable bit(1) 1 = Generates an interrupt event when the input text (plaintext or ciphertext) is consumed during the current cryptographic operation 0 = Does not generate an interrupt event when the input text is consumed bit 9 Unimplemented: Read as `0' bit 8 CRYGO: Cryptographic Engine Start bit(1) 1 = Starts the operation specified by OPMOD<3:0> (cleared automatically when operation is done) 0 = Stops the current operation (when cleared by software); also indicates the current operation has completed (when cleared by hardware) Note 1: 2: 3: These bits are reset on system Resets or whenever the CRYMD bit is set. Writes to these bit fields are locked out whenever an operation is in progress (CRYGO bit is set). If the device enters Idle mode when CRYSIDL = 1, the module will stop its current operation. Entering into Idle mode while an OTP write operation is in process can result in irreversible corruption of the OTP. 2013-2015 Microchip Technology Inc. DS30005009C-page 335 PIC24FJ128GB204 FAMILY REGISTER 23-1: CRYCONL: CRYPTOGRAPHIC CONTROL LOW REGISTER (CONTINUED) bit 7-4 OPMOD<3:0>: Cryptographic Operating Mode Selection bits(1,2) 1111 = Loads session key (decrypt session key in CRYTXTA/CRYTXTB using the Key Encryption Key and write to CRYKEY) 1110 = Encrypts session key (encrypt session key in CRYKEY using the Key Encryption Key and write to CRYTXTA/CRYTXTB) 1011 = Reserved 1010 = Generates a random number 1001 = 1000 = * * = Reserved * 0011 = 0010 = AES decryption key expansion 0001 = Decryption 0000 = Encryption bit 3 CPHRSEL: Cipher Engine Select bit(1,2) 1 = AES engine 0 = DES engine bit 2-0 CPHRMOD<2:0>: Cipher Mode bits(1,2) 11x = Reserved 101 = Reserved 100 = Counter (CTR) mode 011 = Output Feedback (OFB) mode 010 = Cipher Feedback (CFB) mode 001 = Cipher Block Chaining (CBC) mode 000 = Electronic Codebook (ECB) mode Note 1: 2: 3: These bits are reset on system Resets or whenever the CRYMD bit is set. Writes to these bit fields are locked out whenever an operation is in progress (CRYGO bit is set). If the device enters Idle mode when CRYSIDL = 1, the module will stop its current operation. Entering into Idle mode while an OTP write operation is in process can result in irreversible corruption of the OTP. DS30005009C-page 336 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 23-2: U-0 -- CRYCONH: CRYPTOGRAPHIC CONTROL HIGH REGISTER R/W-0(1) R/W-0(1) R/W-0(1) R/W-0(1) R/W-0(1) R/W-0(1) R/W-0(1) CTRSIZE6(2,3) CTRSIZE5(2,3) CTRSIZE4(2,3) CTRSIZE3(2,3) CTRSIZE2(2,3) CTRSIZE1(2,3) CTRSIZE0(2,3) bit 15 R/W-0(1) bit 8 R/W-0(1) SKEYSEL KEYMOD1(2) R/W-0(1) U-0 R/W-0(1) R/W-0(1) R/W-0(1) R/W-0(1) KEYMOD0(2) -- KEYSRC3(2) KEYSRC2(2) KEYSRC1(2) KEYSRC0(2) bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15 Unimplemented: Read as `0' bit 14-8 CTRSIZE<6:0>: Counter Size Select bits(1,2,3) Counter is defined as CRYTXTB<n:0>, where n = CTRSIZEx. Counter increments after each operation and generates a rollover event when the counter rolls over from (2n-1 - 1) to 0. 1111111 = 128 bits (CRYTXTB<127:0>) 1111110 = 127 bits (CRYTXTB<126:0>) * * 0000010 = 3 bits (CRYTXTB<2:0>) 0000001 = 2 bits (CRYTXTB<1:0>) 0000000 = 1 bit (CRYTXTB<0>); rollover event occurs when CRYTXTB<0> toggles from `1' to `0' bit 7 SKEYSEL: Session Key Select bit(1) 1 = Key generation/encryption/loading are performed with CRYKEY<255:128> 0 = Key generation/encryption/loading are performed with CRYKEY<127:0> bit 6-5 KEYMOD<1:0>: AES/DES Encrypt/Decrypt Key Mode/Key Length Select bits(1,2) For DES Encrypt/Decrypt Operations (CPHRSEL = 0): 11 = 64-bit, 3-key 3DES 10 = Reserved 01 = 64-bit, standard 2-key 3DES 00 = 64-bit DES For AES Encrypt/Decrypt Operations (CPHRSEL = 1): 11 = Reserved 10 = 256-bit AES 01 = 192-bit AES 00 = 128-bit AES bit 4 Unimplemented: Read as `0' bit 3-0 KEYSRC<3:0>: Cipher Key Source bits(1,2) Refer to Table 23-1 and Table 23-2 for KEYSRC<3:0> values. Note 1: 2: 3: These bits are reset on system Resets or whenever the CRYMD bit is set. Writes to these bit fields are locked out whenever an operation is in progress (CRYGO bit is set). Used only in CTR operations when CRYTXTB is being used as a counter; otherwise, these bits have no effect. 2013-2015 Microchip Technology Inc. DS30005009C-page 337 PIC24FJ128GB204 FAMILY REGISTER 23-3: CRYSTAT: CRYPTOGRAPHIC STATUS REGISTER U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 15 bit 8 R/HSC-x(1) R/HSC-0(1) R/C-0, HS(2) R/C-0, HS(2) U-0 R/HSC-0(1) R/HSC-x(1) R/HSC-x(1) CRYBSY (4) TXTABSY CRYABRT (5) ROLLOVR -- MODFAIL(3) KEYFAIL(3,4) PGMFAIL(3,4) bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' HS = Hardware Settable bit C = Clearable bit HSC = Hardware Settable/Clearable bit -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Reset State Conditional bit bit 15-8 Unimplemented: Read as `0' bit 7 CRYBSY: Cryptographic OTP Array Busy Status bit (1,4) 1 = The cryptography module is performing a cryptographic operation or OTP operation 0 = The module is not currently performing any operation bit 6 TXTABSY: CRYTXTA Busy Status bit (1) 1 = The CRYTXTA register is busy and may not be written to 0 = The CRYTXTA is free and may be written to bit 5 CRYABRT: Cryptographic Operation Aborted Status bit (2,5) 1 = Last operation was aborted by clearing the CRYGO bit in software 0 = Last operation completed normally (CRYGO cleared in hardware) bit 4 ROLLOVR: Counter Rollover Status bit (2) 1 = The CRYTXTB counter rolled over on the last CTR mode operation; once set, this bit must be cleared by software before the CRYGO bit can be set again 0 = No rollover event has occurred bit 3 Unimplemented: Read as `0' bit 2 MODFAIL: Mode Configuration Fail Flag bit(1,3) 1 = Currently selected operating and Cipher mode configuration is invalid; the CRYWR bit cannot be set until a valid mode is selected (automatically cleared by hardware with any valid configuration) 0 = Currently selected operating and Cipher mode configuration are valid bit 1 KEYFAIL: Key Configuration Fail Status bit(1,3,4) See Table 23-1 and Table 23-2 for invalid key configurations. 1 = Currently selected key and mode configurations are invalid; the CRYWR bit cannot be set until a valid mode is selected (automatically cleared by hardware with any valid configuration) 0 = Currently selected configurations are valid bit 0 PGMFAIL: Key Storage/Configuration Program Fail Flag bit(1,3,4) 1 = The page indicated by KEYPG<3:0> is reserved or locked; the CRYWR bit cannot be set and no programming operation can be started 0 = The page indicated by KEYPG<3:0> is available for programming Note 1: 2: 3: 4: 5: These bits are reset on system Resets or whenever the CRYMD bit is set. These bits are reset on system Resets when the CRYMD bit is set or when CRYGO is cleared. These bits are functional even when the module is disabled (CRYON = 0); this allows mode configurations to be validated for compatibility before enabling the module. These bits are automatically set during all OTP read operations, including the initial read at POR. Once the read is completed, the bit assumes the proper state that reflects the current configuration. If this bit is set, a cryptographic operation cannot be performed. DS30005009C-page 338 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 23-4: CRYOTP: CRYPTOGRAPHIC OTP PAGE PROGRAM CONTROL REGISTER U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 15 bit 8 R/HSC-x(1) R/W-0(1) R/S/HC-1 R/W-0(1) R/W-0(1) R/W-0(1) R/W-0(1) R/S/HC-0(2) PGMTST OTPIE CRYREAD(3,4) KEYPG3 KEYPG2 KEYPG1 KEYPG0 CRYWR(3,4) bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' S = Settable bit HC = Hardware Clearable bit HSC = Hardware Settable/Clearable bit -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-8 Unimplemented: Read as `0' bit 7 PGMTST: Key Storage/Configuration Program Test bit(1) This bit mirrors the state of the TSTPGM bit and is used to test the programming of the secure OTP array after programming. 1 = TSTPGM (CFGPAGE<30>) is programmed (`1') 0 = TSTPGM is not programmed (`0') bit 6 OTPIE: Key Storage/Configuration Program Interrupt Enable bit(1) 1 = Generates an interrupt when the current programming or read operation completes 0 = Does not generate an interrupt when the current programming or read operation completes; software must poll the CRYWR, CRYREAD or CRYBSY bit to determine when the current programming operation is complete bit 5 CRYREAD: Cryptographic Key Storage/Configuration Read bit(3,4) 1 = This bit is set to start a read operation; read operation is in progress while this bit is set and CRYGO = 1 0 = Read operation has completed bit 4-1 KEYPG<3:0>: Key Storage/Configuration Program Page Select bits(1) 1111 = * * = Reserved * 1001 = 1000 = OTP Page 8 0111 = OTP Page 7 0110 = OTP Page 6 0101 = OTP Page 5 0100 = OTP Page 4 0011 = OTP Page 3 0010 = OTP Page 2 0001 = OTP Page 1 0000 = Configuration Page (CFGPAGE, OTP Page 0) bit 0 CRYWR: Cryptographic Key Storage/Configuration Program bit(2,3,4) 1 = Programs the Key Storage/Configuration bits with the value found in CRYTXTC<63:0> 0 = Program operation has completed Note 1: 2: 3: 4: These bits are reset on system Resets or whenever the CRYMD bit is set. These bits are reset on system Resets, when the CRYMD bit is set, or when CRYGO is cleared. Set this bit only when CRYON = 1 and CRYGO = 0. Do not set CRYREAD or CRYWR both at any given time. Do not clear CRYON or these bits while they are set; always allow the hardware operation to complete and clear the bit automatically. 2013-2015 Microchip Technology Inc. DS30005009C-page 339 PIC24FJ128GB204 FAMILY REGISTER 23-5: r-x CFGPAGE: SECURE ARRAY CONFIGURATION BITS (OTP PAGE 0) REGISTER R/PO-x (1) -- TSTPGM U-x U-x -- -- R/PO-x R/PO-x R/PO-x R/PO-x KEY4TYPE1 KEY4TYPE0 KEY3TYPE1 KEY3TYPE0 bit 31 bit 24 R/PO-x R/PO-x R/PO-x R/PO-x KEY2TYPE1 KEY2TYPE0 KEY1TYPE1 KEY1TYPE0 R/PO-x R/PO-x R/PO-x R/PO-x SKEYEN LKYSRC7 LKYSRC6 LKYSRC5 bit 23 bit 16 R/PO-x R/PO-x R/PO-x R/PO-x R/PO-x R/PO-x R/PO-x R/PO-x LKYSRC4 LKYSRC3 LKYSRC2 LKYSRC1 LKYSRC0 SRCLCK WRLOCK8 WRLOCK7 bit 15 bit 8 R/PO-x R/PO-x R/PO-x R/PO-x R/PO-x R/PO-x R/PO-x R/PO-x WRLOCK6 WRLOCK5 WRLOCK74 WRLOCK3 WRLOCK2 WRLOCK1 WRLOCK0 SWKYDIS bit 7 bit 0 Legend: r = Reserved bit R = Readable bit PO = Program Once bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 31 Reserved: Do not modify bit 30 TSTPGM: Customer Program Test bit(1) 1 = CFGPAGE has been programmed 0 = CFGPAGE has not been programmed bit 29-28 Unimplemented: Read as `0' bit 27-26 KEY4TYPE<1:0>: Key Type for OTP Pages 7 and 8 bits 00 = Keys in these pages are for DES/DES2 operations only 01 = Keys in these pages are for DES3 operations only 10 = Keys in these pages are for 128-bit AES operations only 11 = Keys in these pages are for 192-bit/256-bit AES operations only bit 25-24 KEY3TYPE<1:0>: Key Type for OTP Pages 5 and 6 bits 00 = Keys in these pages are for DES/DES2 operations only 01 = Keys in these pages are for DES3 operations only 10 = Keys in these pages are for 128-bit AES operations only 11 = Keys in these pages are for 192-bit/256-bit AES operations only bit 23-22 KEY2TYPE<1:0>: Key Type for OTP Pages 3 and 4 bits 00 = Keys in these pages are for DES/DES2 operations only 01 = Keys in these pages are for DES3 operations only 10 = Keys in these pages are for 128-bit AES operations only 11 = Keys in these pages are for 192-bit/256-bit AES operations only bit 21-20 KEY1TYPE<1:0>: Key Type for OTP Pages 1 and 2 bits 00 = Keys in these pages are for DES/DES2 operations only 01 = Keys in these pages are for DES3 operations only 10 = Keys in these pages are for 128-bit AES operations only 11 = Keys in these pages are for 192-bit/256-bit AES operations only Note 1: This bit's state is mirrored by the PGMTST bit (CRYOTP<7>). DS30005009C-page 340 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 23-5: CFGPAGE: SECURE ARRAY CONFIGURATION BITS (OTP PAGE 0) REGISTER (CONTINUED) bit 19 SKEYEN: Session Key Enable bit 1 = Stored Key #1 may be used only as a Key Encryption Key 0 = Stored Key #1 may be used for any operation bit 18-11 LKYSRC<7:0>: Locked Key Source Configuration bits If SRCLCK = 1: 1xxxxxxx = Key Source is as if KEYSRC<3:0> = 1111 01xxxxxx = Key Source is as if KEYSRC<3:0> = 0111 001xxxxx = Key Source is as if KEYSRC<3:0> = 0110 0001xxxx = Key Source is as if KEYSRC<3:0> = 0101 00001xxx = Key Source is as if KEYSRC<3:0> = 0100 000001xx = Key Source is as if KEYSRC<3:0> = 0011 0000001x = Key Source is as if KEYSRC<3:0> = 0010 00000001 = Key Source is as if KEYSRC<3:0> = 0001 00000000 = Key Source is as if KEYSRC<3:0> = 0000 If SRCLCK = 0: These bits are ignored. bit 10 SRCLCK: Key Source Lock bit 1 = The key source is determined by the KEYSRC<3:0> (CRYCONH<3:0>) bits (software key selection is disabled) 0 = The key source is determined by the KEYSRC<3:0> (CRYCONH<3:0>) bits (locked key selection is disabled) bit 9-1 WRLOCK<8:0>: Write Lock Page Enable bits For OTP Pages 0 (CFGPAGE) through 8: 1 = OTP page is permanently locked and may not be programmed 0 = OTP page is unlocked and may be programmed bit 0 SWKYDIS: Software Key Disable bit 1 = Software key (CRYKEY register) is disabled; when KEYSRC<3:0> = 0000, the KEYFAIL status bit will be set and no encryption/decryption/session key operations can be started until the KEYSRC<3:0> bits are changed to a value other than `0000' 0 = Software key (CRYKEY register) can be used as a key source when KEYSRC<3:0> = 0000 Note 1: This bit's state is mirrored by the PGMTST bit (CRYOTP<7>). 2013-2015 Microchip Technology Inc. DS30005009C-page 341 PIC24FJ128GB204 FAMILY TABLE 23-1: Mode of Operation DES/3DES KEY SOURCE SELECTION KEYMOD<1:0> KEYSRC<3:0> 0000(1) 0001 64-Bit DES 00 <63:0> DES Key #3 <191:128> DES Key #4 <255:192> 0101 DES Key #5 <319:256> 0110 DES Key #6 <383:320> 0111 DES Key #7 <447:384> 1111 Reserved(2) -- (2) Key Config Error CRYKEY<63:0> (1st/3rd) CRYKEY<127:64> (2nd) DES Key #1 (1st/3rd) DES Key #2 (2nd) Key Config Error(2) -- -- <63:0> <127:64> 0010 DES Key #3 (1st/3rd) DES Key #4 (2nd) <191:128> <255:192> 0011 DES Key #5 (1st/3rd) DES Key #6 (2nd) <319:256> <383:320> 0100 DES Key #7 (1st/3rd) DES Key #8 (2nd) <447:384> <511:448> 1111 Reserved(2) -- xxxx (1) 0001 Note 1: 2: Key Config 0100 0000 64-Bit 3-Key 3DES DES Key #1 -- Error(2) 0011 All Others 10 CRYKEY<63:0> <127:64> 0001 (Reserved) SKEYEN = 1 DES Key #2 0000(1) 01 SKEYEN = 0 OTP Array Address 0010 All Others 64-Bit 2-Key 3DES (Standard 2-Key E-D-E/D-E-D) Session Key Source 11 (2) Key Config Error -- Key Config Error(2) -- CRYKEY<63:0> (1st Iteration) CRYKEY<127:64> (2nd Iteration) CRYKEY<191:128> (3rd Iteration) -- DES Key #1 (1st) DES Key #2 (2nd) DES Key #3 (3rd) Key Config Error(2) <63:0> <127:64> <191:128> 0010 DES Key #4 (1st) DES Key #5 (2nd) DES Key #6 (3rd) <255:192> <319:256> <383:320> 1111 Reserved(2) -- All Others Key Config Error(2) -- This configuration is considered a Key Configuration Error (KEYFAIL bit is set) if SWKYDIS is also set. The KEYFAIL bit (CRYSTAT<1>) is set when these configurations are selected and remains set until a valid configuration is selected. DS30005009C-page 342 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY TABLE 23-2: Mode of Operation AES KEY MODE/SOURCE SELECTION KEYMOD<1:0> KEYSRC<3:0> 0000(1) 0001 128-Bit AES 00 <383:256> AES Key #4 <511:384> 1111 (2) Reserved -- Key Config Error(2) -- CRYKEY<191:0> AES Key #1 -- Key Config Error(2) <191:0> 0010 AES Key #2 <383:192> 1111 Reserved(2) -- Key Config Error(2) -- CRYKEY<255:0> AES Key #1 Key Config -- Error(2) <255:0> 0010 AES Key #2 <511:256> 1111 Reserved(2) -- All Others 11 <127:0> AES Key #3 0001 Note 1: 2: Key Config 0100 0000(1) (Reserved) AES Key #1 -- Error(2) 0011 All Others 10 CRYKEY<127:0> <255:128> 0001 256-Bit AES OTP Address SKEYEN = 1 AES Key #2 0000(1) 01 SKEYEN = 0 0010 All Others 192-Bit AES Key Source xxxx Key Config Error(2) -- Key Config Error(2) -- This configuration is considered a Key Configuration Error (KEYFAIL bit is set) if SWKYDIS is also set. The KEYFAIL bit (CRYSTAT<1>) is set when these configurations are selected and remains set until a valid configuration is selected. 2013-2015 Microchip Technology Inc. DS30005009C-page 343 PIC24FJ128GB204 FAMILY NOTES: DS30005009C-page 344 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 24.0 32-BIT PROGRAMMABLE CYCLIC REDUNDANCY CHECK (CRC) GENERATOR Note: The 32-bit programmable CRC generator provides a hardware implemented method of quickly generating checksums for various networking and security applications. It offers the following features: * User-programmable CRC polynomial equation, up to 32 bits * Programmable shift direction (little or big-endian) * Independent data and polynomial lengths * Configurable interrupt output * Data FIFO This data sheet summarizes the features of this group of PIC24F devices. It is not intended to be a comprehensive reference source. For more information, refer to the "dsPIC33/PIC24 Family Reference Manual", "32-Bit Programmable Cyclic Redundancy Check (CRC)" (DS30009729). The information in this data sheet supersedes the information in the FRM. FIGURE 24-1: Figure 24-1 displays a simplified block diagram of the CRC generator. A simple version of the CRC shift engine is displayed in Figure 24-2. CRC MODULE BLOCK DIAGRAM CRCDATH CRCDATL FIFO Empty Event Variable FIFO (4x32, 8x16 or 16x8) CRCWDATH CRCISEL 1 CRCWDATL LENDIAN 0 1 Shift Buffer CRC Interrupt CRC Shift Engine 0 Shift Complete Event Shifter Clock 2 * FCY FIGURE 24-2: CRC SHIFT ENGINE DETAIL CRCWDATH CRC Shift Engine CRCWDATL Read/Write Bus X0 Shift Buffer Data Note 1: Xn(1) X1 Bit 0 Bit 1 Bit n(1) n = PLEN<4:1> + 1. 2013-2015 Microchip Technology Inc. DS30005009C-page 345 PIC24FJ128GB204 FAMILY 24.1 24.1.1 User Interface 24.1.2 POLYNOMIAL INTERFACE The CRC module can be programmed for CRC polynomials of up to the 32nd order, using up to 32 bits. Polynomial length, which reflects the highest exponent in the equation, is selected by the PLEN<4:0> bits (CRCCON2<4:0>). The CRCXORL and CRCXORH registers control which exponent terms are included in the equation. Setting a particular bit includes that exponent term in the equation. Functionally, this includes an XOR operation on the corresponding bit in the CRC engine. Clearing the bit disables the XOR. For example, consider two CRC polynomials, one is a 16-bit and the other is a 32-bit equation. EQUATION 24-1: DATA INTERFACE The module incorporates a FIFO that works with a variable data width. Input data width can be configured to any value between 1 and 32 bits using the DWIDTH<4:0> bits (CRCCON2<12:8>). When the data width is greater than 15, the FIFO is 4 words deep. When the DWIDTHx bits are between 15 and 8, the FIFO is 8 words deep. When the DWIDTHx bits are less than 8, the FIFO is 16 words deep. The data for which the CRC is to be calculated must first be written into the FIFO. Even if the data width is less than 8, the smallest data element that can be written into the FIFO is 1 byte. For example, if the DWIDTHx bits are 5, then the size of the data is DWIDTH<4:0> + 1 or 6. The data is written as a whole byte; the two unused upper bits are ignored by the module. Once data is written into the MSb of the CRCDAT registers (that is, the MSb as defined by the data width), the value of the VWORD<4:0> bits (CRCCON1<12:8>) increments by one. For example, if the DWIDTHx bits are 24, the VWORDx bits will increment when bit 7 of CRCDATH is written. Therefore, CRCDATL must always be written to before CRCDATH. 16-BIT, 32-BIT CRC POLYNOMIALS X16 + X12 + X5 + 1 and X32+X26 + X23 + X22 + X16 + X12 + X11 + X10 + X8 + X7 + X5 + X4 + X2 + X + 1 The CRC engine starts shifting data when the CRCGO bit is set and the value of the VWORDx bits is greater than zero. To program these polynomials into the CRC generator, set the register bits, as shown in Table 24-1. Note that the appropriate positions are set to `1' to indicate that they are used in the equation (for example, X26 and X23). The `0' bit required by the equation is always XORed; thus, X0 is a don't care. For a polynomial of length 32, it is assumed that the 32nd bit will be used. Therefore, the X<31:1> bits do not have the 32nd bit. Each word is copied out of the FIFO into a buffer register, which decrements the VWORDx bits. The data is then shifted out of the buffer. The CRC engine continues shifting at a rate of two bits per instruction cycle, until the VWORDx bits reach zero. This means that for a given data width, it takes half that number of instructions for each word to complete the calculation. For example, it takes 16 cycles to calculate the CRC for a single word of 32-bit data. When the VWORDx bits reach the maximum value for the configured value of the DWIDTHx bits (4, 8 or 16), the CRCFUL bit becomes set. When the VWORDx bits reach zero, the CRCMPT bit becomes set. The FIFO is emptied and the VWORD<4:0> bits are set to `00000' whenever CRCEN is `0'. At least one instruction cycle must pass after a write to CRCWDAT before a read of the VWORDx bits is done. TABLE 24-1: CRC SETUP EXAMPLES FOR 16 AND 32-BIT POLYNOMIALS CRC Control Bits Bit Values 16-Bit Polynomial 32-Bit Polynomial PLEN<4:0> 01111 11111 X<31:16> 0000 0000 0000 0001 0000 0100 1100 0001 X<15:0> 0001 0000 0010 00x 0001 1101 1011 011x DS30005009C-page 346 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 24.1.3 DATA SHIFT DIRECTION The LENDIAN bit (CRCCON1<3>) is used to control the shift direction. By default, the CRC will shift data through the engine, MSb first. Setting LENDIAN (= 1) causes the CRC to shift data, LSb first. This setting allows better integration with various communication schemes and removes the overhead of reversing the bit order in software. Note that this only changes the direction the data is shifted into the engine. The result of the CRC calculation will still be a normal CRC result, not a reverse CRC result. 24.1.4 INTERRUPT OPERATION The module generates an interrupt that is configurable by the user for either of two conditions. If CRCISEL is `0', an interrupt is generated when the VWORD<4:0> bits make a transition from a value of `1' to `0'. If CRCISEL is `1', an interrupt will be generated after the CRC operation finishes and the module sets the CRCGO bit to `0'. Manually setting CRCGO to `0' will not generate an interrupt. Note that when an interrupt occurs, the CRC calculation would not yet be complete. The module will still need (PLEN + 1)/2 clock cycles, after the interrupt is generated, until the CRC calculation is finished. 24.1.5 TYPICAL OPERATION To use the module for a typical CRC calculation: 1. 2. 3. Set the CRCEN bit to enable the module. Configure the module for desired operation: a) Program the desired polynomial using the CRCXORL and CRCXORH registers, and the PLEN<4:0> bits. b) Configure the data width and shift direction using the DWIDTHx and LENDIAN bits. c) Select the desired Interrupt mode using the CRCISEL bit. Preload the FIFO by writing to the CRCDATL and CRCDATH registers until the CRCFUL bit is set or no data is left. 2013-2015 Microchip Technology Inc. 4. 5. 6. 7. 8. Clear old results by writing 00h to CRCWDATL and CRCWDATH. The CRCWDAT registers can also be left unchanged to resume a previously halted calculation. Set the CRCGO bit to start calculation. Write remaining data into the FIFO as space becomes available. When the calculation completes, CRCGO is automatically cleared. An interrupt will be generated if CRCISEL = 1. Read CRCWDATL and CRCWDATH for the result of the calculation. There are eight registers used to control programmable CRC operation: * * * * * * * * CRCCON1 CRCCON2 CRCXORL CRCXORH CRCDATL CRCDATH CRCWDATL CRCWDATH The CRCCON1 and CRCCON2 registers (Register 24-1 and Register 24-2) control the operation of the module and configure the various settings. The CRCXORL/H registers (Register 24-3 and Register 24-4) select the polynomial terms to be used in the CRC equation. The CRCDAT and CRCWDAT registers are each register pairs that serve as buffers for the double-word input data and CRC processed output, respectively. DS30005009C-page 347 PIC24FJ128GB204 FAMILY REGISTER 24-1: CRCCON1: CRC CONTROL 1 REGISTER R/W-0 U-0 R/W-0 R-0, HSC R-0, HSC R-0, HSC R-0, HSC R-0, HSC CRCEN -- CSIDL VWORD4 VWORD3 VWORD2 VWORD1 VWORD0 bit 15 bit 8 R-0, HSC R-1, HSC R/W-0 R/W-0, HC R/W-0 U-0 U-0 U-0 CRCFUL CRCMPT CRCISEL CRCGO LENDIAN -- -- -- bit 7 bit 0 Legend: HC = Hardware Clearable bit HSC = Hardware Settable/Clearable bit R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15 CRCEN: CRC Enable bit 1 = Enables module 0 = Disables module; all state machines, pointers and the CRCWDAT/CRCDATH registers reset; other SFRs are NOT reset bit 14 Unimplemented: Read as `0' bit 13 CSIDL: CRC Stop in Idle Mode bit 1 = Discontinues module operation when device enters Idle mode 0 = Continues module operation in Idle mode bit 12-8 VWORD<4:0>: Pointer Value bits Indicates the number of valid words in the FIFO. Has a maximum value of 8 when PLEN<4:0> 7 or 16 when PLEN<4:0> 7. bit 7 CRCFUL: CRC FIFO Full bit 1 = FIFO is full 0 = FIFO is not full bit 6 CRCMPT: CRC FIFO Empty bit 1 = FIFO is empty 0 = FIFO is not empty bit 5 CRCISEL: CRC Interrupt Selection bit 1 = Interrupt on FIFO is empty; the final word of data is still shifting through the CRC 0 = Interrupt on shift is complete and results are ready bit 4 CRCGO: Start CRC bit 1 = Starts CRC serial shifter 0 = CRC serial shifter is turned off bit 3 LENDIAN: Data Shift Direction Select bit 1 = Data word is shifted into the FIFO, starting with the LSb (little-endian) 0 = Data word is shifted into the FIFO, starting with the MSb (big-endian) bit 2-0 Unimplemented: Read as `0' DS30005009C-page 348 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 24-2: CRCCON2: CRC CONTROL 2 REGISTER U-0 U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 -- -- -- DWIDTH4 DWIDTH3 DWIDTH2 DWIDTH1 DWIDTH0 bit 15 bit 8 U-0 U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 -- -- -- PLEN4 PLEN3 PLEN2 PLEN1 PLEN0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-13 Unimplemented: Read as `0' bit 12-8 DWIDTH<4:0>: Data Word Width Configuration bits Configures the width of the data word (Data Word Width - 1). bit 7-5 Unimplemented: Read as `0' bit 4-0 PLEN<4:0>: Polynomial Length Configuration bits Configures the length of the polynomial (Polynomial Length - 1). 2013-2015 Microchip Technology Inc. x = Bit is unknown DS30005009C-page 349 PIC24FJ128GB204 FAMILY REGISTER 24-3: R/W-0 CRCXORL: CRC XOR POLYNOMIAL REGISTER, LOW BYTE R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 X<15:8> bit 15 bit 8 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 U-0 -- X<7:1> bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-1 X<15:1>: XOR of Polynomial Term xn Enable bits bit 0 Unimplemented: Read as `0' REGISTER 24-4: R/W-0 x = Bit is unknown CRCXORH: CRC XOR POLYNOMIAL REGISTER, HIGH BYTE R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 X<31:24> bit 15 bit 8 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 X<23:16> bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-0 x = Bit is unknown X<31:16>: XOR of Polynomial Term xn Enable bits DS30005009C-page 350 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 25.0 Note: 12-BIT A/D CONVERTER WITH THRESHOLD DETECT This data sheet summarizes the features of this group of PIC24F devices. It is not intended to be a comprehensive reference source. For more information on the 12-Bit A/D Converter, refer to the "dsPIC33/PIC24 Family Reference Manual", "12-Bit A/D Converter with Threshold Detect" (DS39739). 25.1 To perform a standard A/D conversion: 1. The 12-bit A/D Converter has the following key features: * Successive Approximation Register (SAR) Conversion * Conversion Speeds of up to 200 ksps * Up to 19 Analog Input Channels (internal and external) * Selectable 10-Bit or 12-Bit (default) Conversion Resolution * Multiple Internal Reference Input Channels * External Voltage Reference Input Pins * Unipolar Differential Sample-and-Hold (S/H) Amplifier * Automated Threshold Scan and Compare Operation to Pre-Evaluate Conversion Results * Selectable Conversion Trigger Source * Fixed Length (one word per channel), Configurable Conversion Result Buffer * Four Options for Results Alignment * Configurable Interrupt Generation * Enhanced DMA Operations with Indirect Address Generation * Operation During CPU Sleep and Idle modes Basic Operation 2. 3. Configure the module: a) Configure port pins as analog inputs by setting the appropriate bits in the ANSx registers (see Section 11.2 "Configuring Analog Port Pins (ANSx)" for more information). b) Select the voltage reference source to match the expected range on analog inputs (AD1CON2<15:13>). c) Select the positive and negative multiplexer inputs for each channel (AD1CHS<15:0>). d) Select the analog conversion clock to match the desired data rate with the processor clock (AD1CON3<7:0>). e) Select the appropriate sample/conversion sequence (the AD1CON1<7:4> and AD1CON3<12:8> bits). f) For Channel A scanning operations, select the positive channels to be included (AD1CSSH and AD1CSSL registers). g) Select how the conversion results are presented in the buffer (AD1CON1<9:8> and the AD1CON5 register). h) Select the interrupt rate (AD1CON2<6:2>). i) Turn on A/D module (AD1CON1<15>). Configure the A/D interrupt (if required): a) Clear the AD1IF bit (IFS0<13>). b) Enable the AD1IE interrupt (IEC0<13>). c) Select the A/D interrupt priority (IPC3<6:4>). If the module is configured for manual sampling, set the SAMP bit (AD1CON1<1>) to begin sampling. The 12-bit A/D Converter module is an enhanced version of the 10-bit module offered in earlier PIC24 devices. It is a Successive Approximation Register (SAR) Converter, enhanced with 12-bit resolution, a wide range of automatic sampling options, tighter integration with other analog modules and a configurable results buffer. It also includes a unique Threshold Detect feature that allows the module itself to make simple decisions based on the conversion results, and enhanced operation with the DMA Controller through Peripheral Indirect Addressing (PIA). A simplified block diagram for the module is shown in Figure 25-1. 2013-2015 Microchip Technology Inc. DS30005009C-page 351 PIC24FJ128GB204 FAMILY FIGURE 25-1: 12-BIT A/D CONVERTER BLOCK DIAGRAM (PIC24FJ128GB204 FAMILY) Internal Data Bus AVSS VREF+ VR Select AVDD VR+ 16 VR- VREFComparator VINH VINL VRS/H VR+ DAC AN0 AN1 12-Bit SAR Conversion Logic AN2 VINH MUX A Data Formatting (3) AN9 Extended DMA Data ADC1BUF0: ADC1BUFF(2) VINL AN10(1) AN11(1) AD1CON1 AD1CON2 AN12(1) AD1CON3 AD1CON4 MUX B VBG VBG/2 AD1CON5 VINH AD1CHS AD1CHITL AD1CHITH VINL VBAT/2 AD1CSSL AD1CSSH AD1DMBUF AVDD AVSS CTMU Sample Control Control Logic Conversion Control 16 Input MUX Control DMA Data Bus Note 1: 2: 3: AN10 through AN12 are implemented on 44-pin devices only. A/D result buffers are numbered in hexadecimal; ADC1BUF0 through ADC1BUFF represent Buffers 0 through 15. AN8 is not implemented on PIC24FJ128GB204 devices. DS30005009C-page 352 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 25.2 Extended DMA Operations In addition to the standard features available on all 12-bit A/D Converters, PIC24FJ128GB204 family devices implement a limited extension of DMA functionality. This extension adds features that work with the device's DMA Controller to expand the A/D module's data storage abilities beyond the module's built-in buffer. The Extended DMA functionality is controlled by the DMAEN bit (AD1CON1<11>); setting this bit enables the functionality. The DMABM bit (AD1CON1<12>) configures how the DMA feature operates. 25.2.1 EXTENDED BUFFER MODE Extended Buffer mode (DMABM = 1) is useful for storing the results of channels. It can also be used to store the conversion results on any A/D channel in any implemented address in data RAM. In Extended Buffer mode, all data from the A/D Buffer register, and channels above 26, are mapped into data RAM. Conversion data is written to a destination specified by the DMA Controller, specifically by the DMADSTn register. This allows users to read the conversion results of channels above 26, which do not have their own memory-mapped A/D buffer locations, from data memory. When using Extended Buffer mode, always set the BUFREGEN bit to disable FIFO operation. In addition, disable the Split Buffer mode by clearing the BUFM bit. 25.2.2 PIA MODE When DMABM = 0, the A/D module is configured to function with the DMA Controller for Peripheral Indirect Addressing (PIA) mode operations. In this mode, the A/D module generates an 11-bit Indirect Address (IA). This is ORed with the destination address in the DMA Controller to define where the A/D conversion data will be stored. In PIA mode, the buffer space is created as a series of contiguous smaller buffers, one per analog channel. The size of the channel buffer determines how many analog channels can be accommodated. The size of the buffer is selected by the DMABLx bits (AD1CON4<2:0>). The size options range from a single word per buffer to 128 words. Each channel is allocated a buffer of this size, regardless of whether or not the channel will actually have conversion data. The IA is created by combining the base address within a channel buffer with three to five bits (depending on the buffer size) to identify the channel. The base address ranges from zero to seven bits wide, depending on the buffer size. The address is right-padded with a `0' in order to maintain address alignment in the Data Space. The concatenated channel and base address bits are then left-padded with zeros, as necessary, to complete the 11-bit IA. The IA is configured to auto-increment during write operations by using the SMPIx bits (AD1CON2<6:2>). As with PIA operations for any DMA-enabled module, the base destination address in the DMADSTn register must be masked properly to accommodate the IA. Table 25-1 shows how complete addresses are formed. Note that the address masking varies for each buffer size option. Because of masking requirements, some address ranges may not be available for certain buffer sizes. Users should verify that the DMA base address is compatible with the buffer size selected. Figure 25-2 shows how the parts of the address define the buffer locations in data memory. In this case, the module "allocates" 256 bytes of data RAM (1000h to 1100h) for 32 buffers of four words each. However, this is not a hard allocation and nothing prevents these locations from being used for other purposes. For example, in the current case, if Analog Channels 1, 3 and 8 are being sampled and converted, conversion data will only be written to the channel buffers, starting at 1008h, 1018h and 1040h. The holes in the PIA buffer space can be used for any other purpose. It is the user's responsibility to keep track of buffer locations and preventing data overwrites. 25.3 A/D Operation with VBAT One of the A/D channels is connected to the VBAT pin to monitor the VBAT voltage. This allows monitoring the VBAT pin voltage (battery voltage) with no external connection. The voltage measured, using the A/D VBAT monitor, is VBAT/2. The voltage can be calculated by reading A/D = ((VBAT/2)/VDD) * 1024 for 10-bit A/D and ((VBAT/2)/VDD) * 4096 for 12 bit A/D. When using the VBAT A/D monitor: * Connect the A/D channel to ground to discharge the sample capacitor. * Because of the high-impedance of VBAT, select higher sampling time to get an accurate reading. Since the VBAT pin is connected to the A/D during sampling, to prolong the VBAT battery life, the recommendation is to only select the VBAT channel when needed. 2013-2015 Microchip Technology Inc. DS30005009C-page 353 PIC24FJ128GB204 FAMILY 25.4 Registers The 12-bit A/D Converter is controlled through a total of 11 registers: * AD1CON1 through AD1CON5 (Register 25-1 through Register 25-5) * AD1CHS (Register 25-6) TABLE 25-1: * AD1CHITL (Register 25-8) * AD1CSSH and AD1CSSL (Register 25-9 and Register 25-10) * AD1CTMENL (Register 25-11) * AD1DMBUF (not shown) - The 16-bit conversion buffer for Extended Buffer mode INDIRECT ADDRESS GENERATION IN PIA MODE DMABL<2:0> Buffer Size per Channel (words) Generated Offset Address (lower 11 bits) Available Input Channels Allowable DMADSTn Addresses 000 1 000 00cc ccc0 32 xxxx xxxx xx00 0000 001 2 000 0ccc ccn0 32 xxxx xxxx x000 0000 010 4 000 cccc cnn0 32 xxxx xxxx 0000 0000 011 8 00c cccc nnn0 32 xxxx xxx0 0000 0000 100 16 0cc cccn nnn0 32 xxxx xx00 0000 0000 101 32 ccc ccnn nnn0 32 xxxx x000 0000 0000 110 64 ccc cnnn nnn0 16 xxxx x000 0000 0000 111 128 ccc nnnn nnn0 8 xxxx x000 0000 0000 Legend: ccc = Channel number (three to five bits), n = Base buffer address (zero to seven bits), x = User-definable range of DMADSTn for base address, 0 = Masked bits of DMADSTn for IA. DS30005009C-page 354 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY FIGURE 25-2: EXAMPLE OF BUFFER ADDRESS GENERATION IN PIA MODE (4-WORD BUFFERS PER CHANNEL) A/D Module (PIA Mode) BBA DMABL<2:0> = 010 (16-Word Buffer Size) Data RAM Channel ccccc (0-31) 000 cccc cnn0 (IA) nn (0-3) (Buffer Base Address) DMADSTn Ch 7 Buffer (4 Words) Ch 8 Buffer (4 Words) 1038h 1040h Ch 29 Buffer (4 Words) Ch 29 Buffer (4 Words) Ch 31 Buffer (4 Words) 10F0h 10F8h 1100h Buffer Address Channel Address Address Mask DMA Base Address Ch 0, Word 0 Ch 0, Word 1 Ch 0, Word 2 Ch 0, Word 3 Ch 1, Word 0 Ch 1, Word 1 Ch 1, Word 2 Ch 1, Word 3 2013-2015 Microchip Technology Inc. 1000h 1008h 1010h 1018h Destination Range 1000h (DMA Base Address) DMA Channel Ch 0 Buffer (4 Words) Ch 1 Buffer (4 Words) Ch 2 Buffer (4 Words) Ch 3 Buffer (4 Words) 1000h 1002h 1004h 1006h 1008h 100Ah 100Ch 100Eh 0001 0001 0001 0001 0001 0001 0001 0001 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0010 0100 0110 1000 1010 1100 1110 DS30005009C-page 355 PIC24FJ128GB204 FAMILY REGISTER 25-1: R/W-0 AD1CON1: ADC1 CONTROL REGISTER 1 U-0 ADON -- R/W-0 ADSIDL R/W-0 DMABM (1) R/W-0 R/W-0 R/W-0 R/W-0 DMAEN MODE12 FORM1 FORM0 bit 15 bit 8 R/W-0 SSRC3 R/W-0 SSRC2 R/W-0 SSRC1 R/W-0 U-0 R/W-0 R/W-0, HSC R/C-0, HSC SSRC0 -- ASAM SAMP DONE bit 7 bit 0 Legend: C = Clearable bit U = Unimplemented bit, read as `0' R = Readable bit W = Writable bit HSC = Hardware Settable/Clearable bit -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15 ADON: ADC1 Operating Mode bit 1 = A/D Converter module is operating 0 = A/D Converter is off bit 14 Unimplemented: Read as `0' bit 13 ADSIDL: ADC1 Stop in Idle Mode bit 1 = Discontinues module operation when device enters Idle mode 0 = Continues module operation in Idle mode bit 12 DMABM: Extended DMA Buffer Mode Select bit(1) 1 = Extended Buffer mode: Buffer address is defined by the DMADSTn register 0 = PIA mode: Buffer addresses are defined by the DMA Controller and AD1CON4<2:0> bit 11 DMAEN: Extended DMA/Buffer Enable bit 1 = Extended DMA and buffer features are enabled 0 = Extended features are disabled bit 10 MODE12: ADC1 12-Bit Operation Mode bit 1 = 12-bit A/D operation 0 = 10-bit A/D operation bit 9-8 FORM<1:0>: Data Output Format bits (see the following formats) 11 = Fractional result, signed, left justified 10 = Absolute fractional result, unsigned, left justified 01 = Decimal result, signed, right justified 00 = Absolute decimal result, unsigned, right justified bit 7-4 SSRC<3:0>: Sample Clock Source Select bits 1xxx = Unimplemented, do not use 0111 = Internal counter ends sampling and starts conversion (auto-convert); do not use in Auto-Scan mode 0110 = Unimplemented 0101 = TMR1 0100 = CTMU 0011 = TMR5 0010 = TMR3 0001 = INT0 0000 = The SAMP bit must be cleared by software to start conversion bit 3 Unimplemented: Read as `0' bit 2 ASAM: ADC1 Sample Auto-Start bit 1 = Sampling begins immediately after last conversion; SAMP bit is auto-set 0 = Sampling begins when SAMP bit is manually set Note 1: This bit is only available when Extended DMA/Buffer features are available (DMAEN = 1). DS30005009C-page 356 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 25-1: AD1CON1: ADC1 CONTROL REGISTER 1 (CONTINUED) bit 1 SAMP: ADC1 Sample Enable bit 1 = A/D Sample-and-Hold amplifiers are sampling 0 = A/D Sample-and-Hold amplifiers are holding bit 0 DONE: ADC1 Conversion Status bit 1 = A/D conversion cycle has completed 0 = A/D conversion cycle has not started or is in progress Note 1: This bit is only available when Extended DMA/Buffer features are available (DMAEN = 1). 2013-2015 Microchip Technology Inc. DS30005009C-page 357 PIC24FJ128GB204 FAMILY REGISTER 25-2: AD1CON2: ADC1 CONTROL REGISTER 2 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 U-0 U-0 PVCFG1 PVCFG0 NVCFG0 OFFCAL BUFREGEN CSCNA -- -- bit 15 bit 8 R/W-0 R/W-0 (1) SMPI4 BUFS R/W-0 SMPI3 R/W-0 SMPI2 R/W-0 SMPI1 R/W-0 SMPI0 R/W-0 R/W-0 (1) BUFM bit 7 ALTS bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-14 PVCFG<1:0>: Converter Positive Voltage Reference Configuration bits 1x = Unimplemented, do not use 01 = External VREF+ 00 = AVDD bit 13 NVCFG0: Converter Negative Voltage Reference Configuration bit 1 = External VREF0 = AVSS bit 12 OFFCAL: Offset Calibration Mode Select bit 1 = Inverting and non-inverting inputs of channel Sample-and-Hold are connected to AVSS 0 = Inverting and non-inverting inputs of channel Sample-and-Hold are connected to normal inputs bit 11 BUFREGEN: ADC1 Buffer Register Enable bit 1 = Conversion result is loaded into the buffer location determined by the converted channel 0 = A/D result buffer is treated as a FIFO bit 10 CSCNA: Scan Input Selections for CH0+ During Sample A bit 1 = Scans inputs 0 = Does not scan inputs bit 9-8 Unimplemented: Read as `0' bit 7 BUFS: Buffer Fill Status bit(1) 1 = A/D is currently filling ADC1BUF8-ADC1BUFF, user should access data in ADC1BUF0-ADC1BUF7 0 = A/D is currently filling ADC1BUF0-ADC1BUF7, user should access data ADC1BUF8-ADC1BUFF Note 1: These bits are only applicable when the buffer is used in FIFO mode (BUFREGEN = 0). In addition, BUFS is only used when BUFM = 1. DS30005009C-page 358 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 25-2: AD1CON2: ADC1 CONTROL REGISTER 2 (CONTINUED) bit 6-2 SMPI<4:0>: Interrupt Sample/DMA Increment Rate Select bits When DMAEN = 1: 11111 = Increments the DMA address after completion of the 32nd sample/conversion operation 11110 = Increments the DMA address after completion of the 31st sample/conversion operation * * * 00001 = Increments the DMA address after completion of the 2nd sample/conversion operation 00000 = Increments the DMA address after completion of each sample/conversion operation When DMAEN = 0: 11111 = Interrupts at the completion of the conversion for each 32nd sample 11110 = Interrupts at the completion of the conversion for each 31st sample * * * 00001 = Interrupts at the completion of the conversion for every other sample 00000 = Interrupts at the completion of the conversion for each sample bit 1 BUFM: Buffer Fill Mode Select bit(1) 1 = Starts buffer filling at ADC1BUF0 on the first interrupt and ADC1BUF8 on the next interrupt 0 = Always starts filling buffer at ADC1BUF0 bit 0 ALTS: Alternate Input Sample Mode Select bit 1 = Uses channel input selects for Sample A on the first sample and Sample B on the next sample 0 = Always uses channel input selects for Sample A Note 1: These bits are only applicable when the buffer is used in FIFO mode (BUFREGEN = 0). In addition, BUFS is only used when BUFM = 1. 2013-2015 Microchip Technology Inc. DS30005009C-page 359 PIC24FJ128GB204 FAMILY REGISTER 25-3: AD1CON3: ADC1 CONTROL REGISTER 3 R/W-0 R-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 ADRC EXTSAM PUMPEN SAMC4 SAMC3 SAMC2 SAMC1 SAMC0 bit 15 bit 8 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 ADCS7 ADCS6 ADCS5 ADCS4 ADCS3 ADCS2 ADCS1 ADCS0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15 ADRC: ADC1 Conversion Clock Source bit 1 = RC clock 0 = Clock derived from system clock bit 14 EXTSAM: Extended Sampling Time bit 1 = A/D is still sampling after SAMP = 0 0 = A/D is finished sampling bit 13 PUMPEN: Charge Pump Enable bit 1 = Charge pump for switches is enabled 0 = Charge pump for switches is disabled bit 12-8 SAMC<4:0>: Auto-Sample Time Select bits 11111 = 31 TAD * * * 00001 = 1 TAD 00000 = 0 TAD bit 7-0 ADCS<7:0>: ADC1 Conversion Clock Select bits 11111111 = 256 * TCY = TAD * * * 00000001 = 2*TCY = TAD 00000000 = TCY = TAD DS30005009C-page 360 x = Bit is unknown 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 25-4: AD1CON4: ADC1 CONTROL REGISTER 4 U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 15 bit 8 U-0 U-0 -- -- U-0 -- U-0 -- U-0 -- R/W-0 R/W-0 DMABL<2:0> R/W-0 (1) bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-3 Unimplemented: Read as `0' bit 2-0 DMABL<2:0>: DMA Buffer Size Select bits(1) 111 = Allocates 128 words of buffer to each analog input 110 = Allocates 64 words of buffer to each analog input 101 = Allocates 32 words of buffer to each analog input 100 = Allocates 16 words of buffer to each analog input 011 = Allocates 8 words of buffer to each analog input 010 = Allocates 4 words of buffer to each analog input 001 = Allocates 2 words of buffer to each analog input 000 = Allocates 1 word of buffer to each analog input Note 1: x = Bit is unknown The DMABL<2:0> bits are only used when AD1CON1<11> = 1 and AD1CON<12> = 0; otherwise, their value is ignored. 2013-2015 Microchip Technology Inc. DS30005009C-page 361 PIC24FJ128GB204 FAMILY REGISTER 25-5: AD1CON5: ADC1 CONTROL REGISTER 5 R/W-0 R/W-0 R/W-0 R/W-0 U-0 U-0 R/W-0 R/W-0 ASEN LPEN CTMREQ BGREQ -- -- ASINT1 ASINT0 bit 15 bit 8 U-0 U-0 U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 -- -- -- -- WM1 WM0 CM1 CM0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15 ASEN: Auto-Scan Enable bit 1 = Auto-scan is enabled 0 = Auto-scan is disabled bit 14 LPEN: Low-Power Enable bit 1 = Low power is enabled after scan 0 = Full power is enabled after scan bit 13 CTMREQ: CTMU Request bit 1 = CTMU is enabled when the A/D is enabled and active 0 = CTMU is not enabled by the A/D bit 12 BGREQ: Band Gap Request bit 1 = Band gap is enabled when the A/D is enabled and active 0 = Band gap is not enabled by the A/D bit 11-10 Unimplemented: Read as `0' bit 9-8 ASINT<1:0>: Auto-Scan (Threshold Detect) Interrupt Mode bits 11 = Interrupt after Threshold Detect sequence completed and valid compare has occurred 10 = Interrupt after valid compare has occurred 01 = Interrupt after Threshold Detect sequence completed 00 = No interrupt bit 7-4 Unimplemented: Read as `0' bit 3-2 WM<1:0>: Write Mode bits 11 = Reserved 10 = Auto-compare only (conversion results are not saved, but interrupts are generated when a valid match occurs, as defined by the CMx and ASINTx bits) 01 = Convert and save (conversion results are saved to locations as determined by the register bits when a match occurs, as defined by the CMx bits) 00 = Legacy operation (conversion data is saved to a location determined by the buffer register bits) bit 1-0 CM<1:0>: Compare Mode bits 11 = Outside Window mode (valid match occurs if the conversion result is outside of the window defined by the corresponding buffer pair) 10 = Inside Window mode (valid match occurs if the conversion result is inside the window defined by the corresponding buffer pair) 01 = Greater Than mode (valid match occurs if the result is greater than the value in the corresponding buffer register) 00 = Less Than mode (valid match occurs if the result is less than the value in the corresponding buffer register) DS30005009C-page 362 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 25-6: AD1CHS: ADC1 SAMPLE SELECT REGISTER R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 CH0NB2 CH0NB1 CH0NB0 CH0SB4 CH0SB3 CH0SB2 CH0SB1 CH0SB0 bit 15 bit 8 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 CH0NA2 CH0NA1 CH0NA0 CH0SA4 CH0SA3 CH0SA2 CH0SA1 CH0SA0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-13 CH0NB<2:0>: Sample B Channel 0 Negative Input Select bits 1xx = Unimplemented 011 = Unimplemented 010 = AN1 001 = Unimplemented 000 = VREF-/AVSS bit 12-8 CH0SB<4:0>: Sample B Channel 0 Positive Input Select bits 11111 = VBAT/2(1) 11110 = AVDD(1) 11101 = AVSS(1) 11100 = Band Gap Voltage (VBG) reference(1) 11011 = VBG/2(1) 01110 = CTMU 01101 = CTMU temperature sensor input (does not require AD1CTMENL<12> to be set) 01100 = AN12(2) 01011 = AN11(2) 01010 = AN10(2) 01001 = AN9 01000 = Unimplemented 00111 = AN7 00110 = AN6 00101 = AN5 00100 = AN4 00011 = AN3 00010 = AN2 00001 = AN1 00000 = AN0 bit 7-5 CH0NA<2:0>: Sample A Channel 0 Negative Input Select bits Same definitions as for CHONB<2:0>. bit 4-0 CH0SA<4:0>: Sample A Channel 0 Positive Input Select bits Same definitions as for CHOSB<4:0>. Note 1: 2: These input channels do not have corresponding memory-mapped result buffers. These channels are unimplemented in 28-pin devices. 2013-2015 Microchip Technology Inc. DS30005009C-page 363 PIC24FJ128GB204 FAMILY REGISTER 25-7: ANCFG: A/D BAND GAP REFERENCE CONFIGURATION REGISTER U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 15 bit 8 U-0 U-0 U-0 U-0 U-0 R/W-0 R/W-0 R/W-0 -- -- -- -- -- -- VBG2EN VBGEN bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-2 Unimplemented: Read as `0' bit 1 VBG2EN: A/D Input VBG/2 Enable bit 1 = Band Gap Voltage, divided by two reference (VBG/2), is enabled 0 = Band Gap Voltage, divided by two reference (VBG/2), is disabled bit 0 VBGEN: A/D Input VBG Enable bit 1 = Band Gap Voltage (VBG) reference is enabled 0 = Band Gap Voltage (VBG) reference is disabled DS30005009C-page 364 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 25-8: U-0 AD1CHITL: ADC1 SCAN COMPARE HIT REGISTER (LOW WORD) U-0 -- -- U-0 R/W-0 R/W-0 -- R/W-0 CHH<12:9> R/W-0 U-0 (1) -- bit 15 bit 8 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 CHH<7:0> bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-13 Unimplemented: Read as `0' bit 12-9 CHH<12:9>: ADC1 Compare Hit bits(1) If CM<1:0> = 11: 1 = A/D Result Buffer n has been written with data or a match has occurred 0 = A/D Result Buffer n has not been written with data For All Other Values of CM<1:0>: 1 = A match has occurred on A/D Result Channel n 0 = No match has occurred on A/D Result Channel n bit 8 Unimplemented: Read as `0' bit 7-0 CHH<8:0>: ADC1 Compare Hit bits If CM<1:0> = 11: 1 = A/D Result Buffer n has been written with data or a match has occurred 0 = A/D Result Buffer n has not been written with data For All Other Values of CM<1:0>: 1 = A match has occurred on A/D Result Channel n 0 = No match has occurred on A/D Result Channel n Note 1: The CHH<12:10> bits are unimplemented in 28-pin devices, read as `0'. 2013-2015 Microchip Technology Inc. DS30005009C-page 365 PIC24FJ128GB204 FAMILY REGISTER 25-9: R/W-0 AD1CSSH: ADC1 INPUT SCAN SELECT REGISTER (HIGH WORD) R/W-0 R/W-0 R/W-0 R/W-0 CSS<31:27> U-0 U-0 U-0 -- -- -- bit 15 bit 8 U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-11 CSS<31:27>: ADC1 Input Scan Selection bits 1 = Includes corresponding channel for input scan 0 = Skips channel for input scan bit 10-0 Unimplemented: Read as `0' x = Bit is unknown REGISTER 25-10: AD1CSSL: ADC1 INPUT SCAN SELECT REGISTER (LOW WORD) U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 U-0 CSS<14:9>(1) -- -- bit 15 bit 8 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 CSS<7:0> bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15 Unimplemented: Read as `0' bit 14-9 CSS<14:9>: ADC1 Input Scan Selection bits(1) 1 = Includes corresponding channel for input scan 0 = Skips channel for input scan bit 8 Unimplemented: Read as `0' bit 7-0 CSS<7:0>: ADC1 Input Scan Selection bits 1 = Includes corresponding channel for input scan 0 = Skips channel for input scan Note 1: x = Bit is unknown The CSS<12:10> bits are unimplemented in 28-pin devices, read as `0'. DS30005009C-page 366 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 25-11: AD1CTMENL: ADC1 CTMU ENABLE REGISTER (LOW WORD)(1) U-0 U-0 -- -- U-0 R/W-0 R/W-0 R/W-0 R/W-0 U-0 (2) -- CTMEN<12:9> -- bit 15 bit 8 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 CTMEN<7:0> bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-13 Unimplemented: Read as `0' bit 12-9 CTMEN<12:9>: CTMU Enable During Conversion bits(2) 1 = CTMU is enabled and connected to the selected channel during conversion 0 = CTMU is not connected to this channel bit 8 Unimplemented: Read as `0' bit 7-0 CTMEN<7:0>: CTMU Enable During Conversion bits 1 = CTMU is enabled and connected to the selected channel during conversion 0 = CTMU is not connected to this channel Note 1: 2: The actual number of channels available depends on which channels are implemented on a specific device. For more information, refer to Table 1-1 and Table 1-2 in Section 1.0 "Device Overview". Unimplemented channels are read as `0'. The CTMEN<12:10> bits are unimplemented in 28-pin devices, read as `0'. 2013-2015 Microchip Technology Inc. DS30005009C-page 367 PIC24FJ128GB204 FAMILY FIGURE 25-3: 10-BIT A/D CONVERTER ANALOG INPUT MODEL RIC 250 Rs VA ANx Sampling Switch RSS CHOLD = 4.4 pF ILEAKAGE 500 nA CPIN RSS 3 k VSS Legend: CPIN = Input Capacitance(1) VT = Threshold Voltage ILEAKAGE = Leakage Current at the pin due to Various Junctions RIC = Interconnect Resistance RSS = Sampling Switch Resistance CHOLD = Sample/Hold Capacitance (from DAC) Note 1: The CPIN value depends on the device package and is not tested. The effect of CPIN is negligible if Rs 5 k. EQUATION 25-1: A/D CONVERSION CLOCK PERIOD TAD = TCY (ADCS + 1) ADCS = TAD TCY -1 Note: Based on TCY = 2/FOSC; Doze mode and PLL are disabled. DS30005009C-page 368 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY FIGURE 25-4: 12-BIT A/D TRANSFER FUNCTION Output Code (Binary (Decimal)) 1111 1111 1111 (4095) 1111 1111 1110 (4094) 0010 0000 0011 (2051) 0010 0000 0010 (2050) 0010 0000 0001 (2049) 0010 0000 0000 (2048) 0001 1111 1111 (2047) 0001 1111 1110 (2046) 0001 1111 1101 (2045) 0000 0000 0001 (1) 2013-2015 Microchip Technology Inc. (VINH - VINL) VR+ 4096 4095 * (VR+ - VR-) VR- + 4096 VR-+ 2048 * (VR+ - VR-) 4096 VR- + Voltage Level VR+ - VR- 0 VR- 0000 0000 0000 (0) DS30005009C-page 369 PIC24FJ128GB204 FAMILY FIGURE 25-5: 10-BIT A/D TRANSFER FUNCTION Output Code (Binary (Decimal)) 11 1111 1111 (1023) 11 1111 1110 (1022) 10 0000 0011 (515) 10 0000 0010 (514) 10 0000 0001 (513) 10 0000 0000 (512) 01 1111 1111 (511) 01 1111 1110 (510) 01 1111 1101 (509) 00 0000 0001 (1) DS30005009C-page 370 (VINH - VINL) VR+ 1024 1023 * (VR+ - VR-) VR- + 1024 VR-+ 512 * (VR+ - VR-) 1024 VR- + Voltage Level VR+ - VR- 0 VR- 00 0000 0000 (0) 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 26.0 TRIPLE COMPARATOR MODULE Note: voltage reference input from one of the internal band gap references or the comparator voltage reference generator (VBG, VBG/2 and CVREF). This data sheet summarizes the features of this group of PIC24F devices. It is not intended to be a comprehensive reference source. For more information, refer to the "dsPIC33/PIC24 Family Reference Manual", "Scalable Comparator Module" (DS39734). The information in this data sheet supersedes the information in the FRM. The triple comparator module provides three dual input comparators. The inputs to the comparator can be configured to use any one of five external analog inputs (CxINA, CxINB, CxINC, CxIND and VREF+) and a FIGURE 26-1: The comparator outputs may be directly connected to the CxOUT pins. When the respective COE equals `1', the I/O pad logic makes the unsynchronized output of the comparator available on the pin. A simplified block diagram of the module in shown in Figure 26-1. Diagrams of the possible individual comparator configurations are shown in Figure 26-2, Figure 26-3 and Figure 26-4. Each comparator has its own control register, CMxCON (Register 26-1), for enabling and configuring its operation. The output and event status of all three comparators is provided in the CMSTAT register (Register 26-2). TRIPLE COMPARATOR MODULE BLOCK DIAGRAM EVPOL<1:0> CCH<1:0> Input Select Logic CxINB CPOL VIN00 VIN+ Trigger/Interrupt Logic CEVT COE C1 01 CxINC COUT 10 CxIND VBG 00 VBG/2 01 11 EVPOL<1:0> CPOL Trigger/Interrupt Logic CEVT COE VIN- 11 CVREF+ VIN+ C2 CVREFM<1:0>(1) COUT 0 CxINA CVREF+ CVREF C1OUT Pin 1 1 C2OUT Pin EVPOL<1:0> + 0 VIN+ CVREFP(1) CPOL VIN- Trigger/Interrupt Logic CEVT COE C3 COUT C3OUT Pin CREF Note 1: Refer to the CVRCON register (Register 27-1) for bit details. 2013-2015 Microchip Technology Inc. DS30005009C-page 371 PIC24FJ128GB204 FAMILY FIGURE 26-2: INDIVIDUAL COMPARATOR CONFIGURATIONS WHEN CREF = 0 Comparator Off CEN = 0, CREF = x, CCH<1:0> = xx COE VINVIN+ Cx Off (Read as `0') CxOUT Pin Comparator CxINB > CxINA Compare Comparator CxINC > CxINA Compare CEN = 1, CCH<1:0> = 00, CVREFM<1:0> = xx CEN = 1, CCH<1:0> = 01, CVREFM<1:0> = xx CxINB CxINA COE VINVIN+ CxINC Cx CxOUT Pin CxINA VIN+ COE VBG Cx CxOUT Pin Comparator VBG > CxINA Compare CxINA VIN+ DS30005009C-page 372 CxINA COE VINVIN+ Cx CxOUT Pin CEN = 1, CCH<1:0> = 11, CVREFM<1:0> = 11 COE VIN- CxOUT Pin Comparator CxIND > CxINA Compare CEN = 1, CCH<1:0> = 11, CVREFM<1:0> = 01 VBG/2 Cx CEN = 1, CCH<1:0> = 11, CVREFM<1:0> = 00 CEN = 1, CCH<1:0> = 10, CVREFM<1:0> = xx VIN- VIN+ Comparator VBG > CxINA Compare Comparator CxIND > CxINA Compare CxIND CxINA COE VIN- VREF+ Cx CxOUT Pin CxINA COE VINVIN+ Cx CxOUT Pin 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY FIGURE 26-3: INDIVIDUAL COMPARATOR CONFIGURATIONS WHEN CREF = 1 AND CVREFP = 0 Comparator CxINB > CVREF Compare Comparator CxINC > CVREF Compare CEN = 1, CCH<1:0> = 00, CVREFM<1:0> = xx CEN = 1, CCH<1:0> = 01, CVREFM<1:0> = xx CxINB CVREF COE VINVIN+ Cx CxOUT Pin CVREF VIN+ CVREF CxOUT Pin CEN = 1, CCH<1:0> = 11, CVREFM<1:0> = 00 COE VIN- Cx CxOUT Pin COE VIN- VBG VIN+ Cx Comparator VBG > CVREF Compare Comparator CxIND > CVREF Compare CEN = 1, CCH<1:0> = 10, CVREFM<1:0> = xx CxIND COE VIN- CxINC VIN+ CVREF Cx CxOUT Pin Comparator VBG > CVREF Compare Comparator CxIND > CVREF Compare CEN = 1, CCH<1:0> = 11, CVREFM<1:0> = 01 CEN = 1, CCH<1:0> = 11, CVREFM<1:0> = 11 VBG/2 CVREF COE VIN- Cx VIN+ CxOUT Pin FIGURE 26-4: COE VIN- VREF+ VIN+ CVREF Cx CxOUT Pin INDIVIDUAL COMPARATOR CONFIGURATIONS WHEN CREF = 1 AND CVREFP = 1 Comparator CxINB > CVREF Compare Comparator CxINC > CVREF Compare CEN = 1, CCH<1:0> = 00, CVREFM<1:0> = xx CEN = 1, CCH<1:0> = 01, CVREFM<1:0> = xx CxINB VREF+ COE VINVIN+ Cx CxOUT Pin VIN+ CxOUT Pin COE VIN- Cx CEN = 1, CCH<1:0> = 11, CVREFM<1:0> = 00 CEN = 1, CCH<1:0> = 10, CVREFM<1:0> = xx VREF+ VIN+ VREF+ Comparator VBG > CVREF Compare Comparator CxIND > CVREF Compare CxIND COE VIN- CxINC Cx CxOUT Pin COE VIN- VBG VIN+ VREF+ Cx CxOUT Pin Comparator VBG > CVREF Compare CEN = 1, CCH<1:0> = 11, CVREFM<1:0> = 01 VBG/2 VREF+ 2013-2015 Microchip Technology Inc. COE VINVIN+ Cx CxOUT Pin DS30005009C-page 373 PIC24FJ128GB204 FAMILY REGISTER 26-1: CMxCON: COMPARATOR x CONTROL REGISTERS (COMPARATORS 1 THROUGH 3) R/W-0 R/W-0 R/W-0 U-0 U-0 U-0 R/W-0, HS R-0, HSC CON COE CPOL -- -- -- CEVT COUT bit 15 bit 8 R/W-0 R/W-0 U-0 R/W-0 U-0 U-0 R/W-0 R/W-0 EVPOL1(1) EVPOL0(1) -- CREF -- -- CCH1 CCH0 bit 7 bit 0 Legend: HS = Hardware Settable bit HSC = Hardware Settable/Clearable bit R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15 CON: Comparator Enable bit 1 = Comparator is enabled 0 = Comparator is disabled bit 14 COE: Comparator Output Enable bit 1 = Comparator output is present on the CxOUT pin 0 = Comparator output is internal only bit 13 CPOL: Comparator Output Polarity Select bit 1 = Comparator output is inverted 0 = Comparator output is not inverted bit 12-10 Unimplemented: Read as `0' bit 9 CEVT: Comparator Event bit 1 = Comparator event that is defined by the EVPOL<1:0> bits has occurred; subsequent triggers and interrupts are disabled until the bit is cleared 0 = Comparator event has not occurred bit 8 COUT: Comparator Output bit When CPOL = 0: 1 = VIN+ > VIN0 = VIN+ < VINWhen CPOL = 1: 1 = VIN+ < VIN0 = VIN+ > VIN- bit 7-6 EVPOL<1:0>: Trigger/Event/Interrupt Polarity Select bits(1) 11 = Trigger/event/interrupt is generated on any change of the comparator output (while CEVT = 0) 10 = Trigger/event/interrupt is generated on the high-to-low transition of the comparator output 01 = Trigger/event/interrupt is generated on the low-to-high transition of the comparator output 00 = Trigger/event/interrupt generation is disabled bit 5 Unimplemented: Read as `0' bit 4 CREF: Comparator Reference Select bit (non-inverting input) 1 = Non-inverting input connects to the internal CVREF voltage 0 = Non-inverting input connects to the CxINA pin bit 3-2 Unimplemented: Read as `0' Note 1: If the EVPOL<1:0> bits are set to a value other than `00', the first interrupt generated will occur on any transition of COUT. Subsequent interrupts will occur based on the EVPOLx bits setting. DS30005009C-page 374 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 26-1: bit 1-0 Note 1: CMxCON: COMPARATOR x CONTROL REGISTERS (COMPARATORS 1 THROUGH 3) (CONTINUED) CCH<1:0>: Comparator Channel Select bits 11 = Inverting input of the comparator connects to the internal selectable reference voltage specified by the CVREFM<1:0> bits in the CVRCON register 10 = Inverting input of the comparator connects to the CxIND pin 01 = Inverting input of the comparator connects to the CxINC pin 00 = Inverting input of the comparator connects to the CxINB pin If the EVPOL<1:0> bits are set to a value other than `00', the first interrupt generated will occur on any transition of COUT. Subsequent interrupts will occur based on the EVPOLx bits setting. REGISTER 26-2: CMSTAT: COMPARATOR MODULE STATUS REGISTER R/W-0 U-0 U-0 U-0 U-0 R-0, HSC R-0, HSC R-0, HSC CMIDL -- -- -- -- C3EVT C2EVT C1EVT bit 15 bit 8 U-0 U-0 U-0 U-0 U-0 R-0, HSC R-0, HSC R-0, HSC -- -- -- -- -- C3OUT C2OUT C1OUT bit 7 bit 0 Legend: HSC = Hardware Settable/Clearable bit R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15 CMIDL: Comparator Stop in Idle Mode bit 1 = Discontinues operation of all comparators when device enters Idle mode 0 = Continues operation of all enabled comparators in Idle mode bit 14-11 Unimplemented: Read as `0' bit 10 C3EVT: Comparator 3 Event Status bit (read-only) Shows the current event status of Comparator 3 (CM3CON<9>). bit 9 C2EVT: Comparator 2 Event Status bit (read-only) Shows the current event status of Comparator 2 (CM2CON<9>). bit 8 C1EVT: Comparator 1 Event Status bit (read-only) Shows the current event status of Comparator 1 (CM1CON<9>). bit 7-3 Unimplemented: Read as `0' bit 2 C3OUT: Comparator 3 Output Status bit (read-only) Shows the current output of Comparator 3 (CM3CON<8>). bit 1 C2OUT: Comparator 2 Output Status bit (read-only) Shows the current output of Comparator 2 (CM2CON<8>). bit 0 C1OUT: Comparator 1 Output Status bit (read-only) Shows the current output of Comparator 1 (CM1CON<8>). 2013-2015 Microchip Technology Inc. DS30005009C-page 375 PIC24FJ128GB204 FAMILY NOTES: DS30005009C-page 376 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 27.0 Note: COMPARATOR VOLTAGE REFERENCE 27.1 This data sheet summarizes the features of this group of PIC24F devices. It is not intended to be a comprehensive reference source. For more information, refer to the "dsPIC33/PIC24 Family Reference Manual", "Comparator Voltage Reference Module" (DS39709). The information in this data sheet supersedes the information in the FRM. FIGURE 27-1: CVREF+ AVDD Configuring the Comparator Voltage Reference The comparator voltage reference module is controlled through the CVRCON register (Register 27-1). The comparator voltage reference provides a range of output voltages with 32 distinct levels. The comparator reference supply voltage can come from either VDD and VSS, or the external CVREF+ and CVREF- pins. The voltage source is selected by the CVRSS bit (CVRCON<5>). The settling time of the comparator voltage reference must be considered when changing the CVREF output. COMPARATOR VOLTAGE REFERENCE BLOCK DIAGRAM CVRSS = 1 CVRSS = 0 CVR<4:0> R CVREN R R 32 Steps R R R CVREF- 32-to-1 MUX R CVREF CVROE CVREF Pin CVRSS = 1 CVRSS = 0 AVSS 2013-2015 Microchip Technology Inc. DS30005009C-page 377 PIC24FJ128GB204 FAMILY REGISTER 27-1: CVRCON: COMPARATOR VOLTAGE REFERENCE CONTROL REGISTER U-0 U-0 U-0 U-0 U-0 R/W-0 R/W-0 R/W-0 -- -- -- -- -- CVREFP CVREFM1 CVREFM0 bit 15 bit 8 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 CVREN CVROE CVRSS CVR4 CVR3 CVR2 CVR1 CVR0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15-11 Unimplemented: Read as `0' bit 10 CVREFP: Voltage Reference Select bit (valid only when CREF is `1') 1 = VREF+ is used as a reference voltage to the comparators 0 = The CVR<4:0> bits (4-bit DAC) within this module provide the reference voltage to the comparators bit 9-8 CVREFM<1:0>: Band Gap Reference Source Select bits (valid only when CCH<1:0> = 11) 00 = Band gap voltage is provided as an input to the comparators 01 = Band gap voltage, divided by two, is provided as an input to the comparators 10 = Reserved 11 = VREF+ pin is provided as an input to the comparators bit 7 CVREN: Comparator Voltage Reference Enable bit 1 = CVREF circuit is powered on 0 = CVREF circuit is powered down bit 6 CVROE: Comparator VREF Output Enable bit 1 = CVREF voltage level is output on the CVREF pin 0 = CVREF voltage level is disconnected from the CVREF pin bit 5 CVRSS: Comparator VREF Source Selection bit 1 = Comparator reference source, CVRSRC = VREF+ - VREF0 = Comparator reference source, CVRSRC = AVDD - AVSS bit 4-0 CVR<4:0>: Comparator VREF Value Selection bits CVREF = (CVR<4:0>/32) * (CVRSRC) DS30005009C-page 378 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 28.0 Note: CHARGE TIME MEASUREMENT UNIT (CTMU) This data sheet summarizes the features of this group of PIC24F devices. It is not intended to be a comprehensive reference source. For more information on the Charge Time Measurement Unit, refer to the "dsPIC33/PIC24 Family Reference Manual", "Charge Time Measurement Unit (CTMU) with Threshold Detect" (DS39743). The information in this data sheet supersedes the information in the FRM. The Charge Time Measurement Unit (CTMU) is a flexible analog module that provides charge measurement, accurate differential time measurement between pulse sources and asynchronous pulse generation. Its key features include: * * * * Thirteen external edge input trigger sources Polarity control for each edge source Control of edge sequence Control of response to edge levels or edge transitions * Time measurement resolution of one nanosecond * Accurate current source suitable for capacitive measurement Together with other on-chip analog modules, the CTMU can be used to precisely measure time, measure capacitance, measure relative changes in capacitance or generate output pulses that are independent of the system clock. The CTMU module is ideal for interfacing with capacitive-based touch sensors. 28.1 Measuring Capacitance The CTMU module measures capacitance by generating an output pulse, with a width equal to the time between edge events, on two separate input channels. The pulse edge events to both input channels can be selected from four sources: two internal peripheral modules (OC1 and Timer1) and up to 13 external pins (CTED1 through CTED13). This pulse is used with the module's precision current source to calculate capacitance according to the relationship: EQUATION 28-1: I=C* dV dT For capacitance measurements, the A/D Converter samples an external Capacitor (CAPP) on one of its input channels after the CTMU output's pulse. A Precision Resistor (RPR) provides current source calibration on a second A/D channel. After the pulse ends, the converter determines the voltage on the capacitor. The actual calculation of capacitance is performed in software by the application. Figure 28-1 illustrates the external connections used for capacitance measurements and how the CTMU and A/D modules are related in this application. This example also shows the edge events coming from Timer1, but other configurations using external edge sources are possible. A detailed discussion on measuring capacitance and time with the CTMU module is provided in the "dsPIC33/PIC24 Family Reference Manual", "Charge Time Measurement Unit (CTMU) with Threshold Detect" (DS39743). The CTMU is controlled through three registers: CTMUCON1, CTMUCON2 and CTMUICON. CTMUCON1 enables the module and controls the mode of operation of the CTMU, as well as controlling edge sequencing. CTMUCON2 controls edge source selection and edge source polarity selection. The CTMUICON register selects the current range of the current source and trims the current. 2013-2015 Microchip Technology Inc. DS30005009C-page 379 PIC24FJ128GB204 FAMILY FIGURE 28-1: TYPICAL CONNECTIONS AND INTERNAL CONFIGURATION FOR CAPACITANCE MEASUREMENT PIC24F Device Timer1 CTMU EDG1 Current Source EDG2 Output Pulse A/D Converter ANx ANY CAPP DS30005009C-page 380 RPR 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 28.2 Measuring Time When the module is configured for pulse generation delay by setting the TGEN bit (CTMUCON1<12>), the internal current source is connected to the B input of Comparator 2. A Capacitor (CDELAY) is connected to the Comparator 2 pin, C2INB, and the Comparator voltage Reference, CVREF, is connected to C2INA. CVREF is then configured for a specific trip point. The module begins to charge CDELAY when an edge event is detected. When CDELAY charges above the CVREF trip point, a pulse is output on CTPLS. The length of the pulse delay is determined by the value of CDELAY and the CVREF trip point. Time measurements on the pulse width can be similarly performed using the A/D module's Internal Capacitor (CAD) and a precision resistor for current calibration. Figure 28-2 displays the external connections used for time measurements, and how the CTMU and A/D modules are related in this application. This example also shows both edge events coming from the external CTED pins, but other configurations using internal edge sources are possible. 28.3 Pulse Generation and Delay Figure 28-3 illustrates the external connections for pulse generation, as well as the relationship of the different analog modules required. While CTED1 is shown as the input pulse source, other options are available. A detailed discussion on pulse generation with the CTMU module is provided in the "dsPIC33/ PIC24 Family Reference Manual". The CTMU module can also generate an output pulse with edges that are not synchronous with the device's system clock. More specifically, it can generate a pulse with a programmable delay from an edge event input to the module. FIGURE 28-2: TYPICAL CONNECTIONS AND INTERNAL CONFIGURATION FOR TIME MEASUREMENT PIC24F Device CTMU CTEDx EDG1 CTEDx EDG2 Current Source Output Pulse A/D Converter ANx CAD RPR FIGURE 28-3: TYPICAL CONNECTIONS AND INTERNAL CONFIGURATION FOR PULSE DELAY GENERATION PIC24F Device CTEDx EDG1 CTMU CTPLS Current Source Comparator C2INB CDELAY 2013-2015 Microchip Technology Inc. - C2 CVREF DS30005009C-page 381 PIC24FJ128GB204 FAMILY REGISTER 28-1: CTMUCON1: CTMU CONTROL REGISTER 1 R/W-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 CTMUEN -- CTMUSIDL TGEN EDGEN EDGSEQEN IDISSEN CTTRIG bit 15 bit 8 U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15 CTMUEN: CTMU Enable bit 1 = Module is enabled 0 = Module is disabled bit 14 Unimplemented: Read as `0' bit 13 CTMUSIDL: CTMU Stop in Idle Mode bit 1 = Discontinues module operation when device enters Idle mode 0 = Continues module operation in Idle mode bit 12 TGEN: Time Generation Enable bit 1 = Enables edge delay generation 0 = Disables edge delay generation bit 11 EDGEN: Edge Enable bit 1 = Edges are not blocked 0 = Edges are blocked bit 10 EDGSEQEN: Edge Sequence Enable bit 1 = Edge 1 event must occur before Edge 2 event can occur 0 = No edge sequence is needed bit 9 IDISSEN: Analog Current Source Control bit 1 = Analog current source output is grounded 0 = Analog current source output is not grounded bit 8 CTTRIG: CTMU Trigger Control bit 1 = Trigger output is enabled 0 = Trigger output is disabled bit 7-0 Unimplemented: Read as `0' DS30005009C-page 382 x = Bit is unknown 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 28-2: CTMUCON2: CTMU CONTROL REGISTER 2 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 EDG1MOD EDG1POL EDG1SEL3 EDG1SEL2 EDG1SEL1 EDG1SEL0 EDG2STAT EDG1STAT bit 15 bit 8 R/W-0 R/W-0 EDG2MOD EDG2POL R/W-0 EDG2SEL3 R/W-0 EDG2SEL2 R/W-0 EDG2SEL1 R/W-0 U-0 U-0 EDG2SEL0 -- -- bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15 EDG1MOD: Edge 1 Edge-Sensitive Select bit 1 = Input is edge-sensitive 0 = Input is level-sensitive bit 14 EDG1POL: Edge 1 Polarity Select bit 1 = Edge 1 is programmed for a positive edge response 0 = Edge 1 is programmed for a negative edge response bit 13-10 EDG1SEL<3:0>: Edge 1 Source Select bits 1111 = Edge 1 source is the Comparator 3 output 1110 = Edge 1 source is the Comparator 2 output 1101 = Edge 1 source is the Comparator 1 output 1100 = Edge 1 source is IC3 1011 = Edge 1 source is IC2 1010 = Edge 1 source is IC1 1001 = Edge 1 source is CTED8 1000 = Edge 1 source is CTED7(1) 0111 = Edge 1 source is CTED6 0110 = Edge 1 source is CTED5 0101 = Edge 1 source is CTED4 0100 = Edge 1 source is CTED3 0011 = Edge 1 source is CTED1 0010 = Edge 1 source is CTED2 0001 = Edge 1 source is OC1 0000 = Edge 1 source is Timer1 bit 9 EDG2STAT: Edge 2 Status bit Indicates the status of Edge 2 and can be written to control the current source. 1 = Edge 2 has occurred 0 = Edge 2 has not occurred bit 8 EDG1STAT: Edge 1 Status bit Indicates the status of Edge 1 and can be written to control the current source. 1 = Edge 1 has occurred 0 = Edge 1 has not occurred bit 7 EDG2MOD: Edge 2 Edge-Sensitive Select bit 1 = Input is edge-sensitive 0 = Input is level-sensitive bit 6 EDG2POL: Edge 2 Polarity Select bit 1 = Edge 2 is programmed for a positive edge 0 = Edge 2 is programmed for a negative edge Note 1: Edge source, CTED7, is not available in 28-pin packages. 2013-2015 Microchip Technology Inc. DS30005009C-page 383 PIC24FJ128GB204 FAMILY REGISTER 28-2: CTMUCON2: CTMU CONTROL REGISTER 2 (CONTINUED) bit 5-2 EDG2SEL<3:0>: Edge 2 Source Select bits 1111 = Edge 2 source is the Comparator 3 output 1110 = Edge 2 source is the Comparator 2 output 1101 = Edge 2 source is the Comparator 1 output 1100 = Unimplemented; do not use 1011 = Edge 2 source is IC3 1010 = Edge 2 source is IC2 1001 = Edge 2 source is IC1 1000 = Edge 2 source is CTED13 0111 = Edge 2 source is CTED12 0110 = Edge 2 source is CTED11 0101 = Edge 2 source is CTED10 0100 = Edge 2 source is CTED9 0011 = Edge 2 source is CTED1 0010 = Edge 2 source is CTED2 0001 = Edge 2 source is OC1 0000 = Edge 2 source is Timer1 bit 1-0 Unimplemented: Read as `0' Note 1: Edge source, CTED7, is not available in 28-pin packages. DS30005009C-page 384 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 28-3: CTMUICON: CTMU CURRENT CONTROL REGISTER R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 ITRIM5 ITRIM4 ITRIM3 ITRIM2 ITRIM1 ITRIM0 IRNG1 IRNG0 bit 15 bit 8 U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 15-10 ITRIM<5:0>: Current Source Trim bits 011111 = Maximum positive change from nominal current 011110 * * * 000001 = Minimum positive change from nominal current 000000 = Nominal current output specified by IRNG<1:0> 111111 = Minimum negative change from nominal current * * * 100010 100001 = Maximum negative change from nominal current bit 9-8 IRNG<1:0>: Current Source Range Select bits 11 = 100 x Base Current 10 = 10 x Base Current 01 = Base current level (0.55 A nominal) 00 = 1000 x Base Current bit 7-0 Unimplemented: Read as `0' 2013-2015 Microchip Technology Inc. x = Bit is unknown DS30005009C-page 385 PIC24FJ128GB204 FAMILY NOTES: DS30005009C-page 386 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 29.0 HIGH/LOW-VOLTAGE DETECT (HLVD) Note: An interrupt flag is set if the device experiences an excursion past the trip point in the direction of change. If the interrupt is enabled, the program execution will branch to the interrupt vector address and the software can then respond to the interrupt. This data sheet summarizes the features of this group of PIC24F devices. It is not intended to be a comprehensive reference source. For more information on the High/Low-Voltage Detect, refer to the "dsPIC33/PIC24 Family Reference Manual", "High-Level Integration with Programmable High/Low-Voltage Detect (HLVD)" (DS39725). The HLVD Control register (see Register 29-1) completely controls the operation of the HLVD module. This allows the circuitry to be "turned off" by the user under software control, which minimizes the current consumption for the device. The High/Low-Voltage Detect (HLVD) module is a programmable circuit that allows the user to specify both the device voltage trip point and the direction of change. FIGURE 29-1: VDD HIGH/LOW-VOLTAGE DETECT (HLVD) MODULE BLOCK DIAGRAM Externally Generated Trip Point VDD HLVDIN HLVDL<3:0> 16-to-1 MUX HLVDEN VDIR Set HLVDIF Internal Voltage Reference 1.20V Typical HLVDEN 2013-2015 Microchip Technology Inc. DS30005009C-page 387 PIC24FJ128GB204 FAMILY REGISTER 29-1: HLVDCON: HIGH/LOW-VOLTAGE DETECT CONTROL REGISTER R/W-0 U-0 R/W-0 U-0 U-0 U-0 U-0 U-0 HLVDEN -- LSIDL -- -- -- -- -- bit 15 bit 8 R/W-0 R/W-0 R/W-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 VDIR BGVST IRVST -- HLVDL3 HLVDL2 HLVDL1 HLVDL0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 15 HLVDEN: High/Low-Voltage Detect Power Enable bit 1 = HLVD is enabled 0 = HLVD is disabled bit 14 Unimplemented: Read as `0' bit 13 LSIDL: HLVD Stop in Idle Mode bit 1 = Discontinues module operation when device enters Idle mode 0 = Continues module operation in Idle mode bit 12-8 Unimplemented: Read as `0' bit 7 VDIR: Voltage Change Direction Select bit 1 = Event occurs when voltage equals or exceeds the trip point (HLVDL<3:0>) 0 = Event occurs when voltage equals or falls below the trip point (HLVDL<3:0>) bit 6 BGVST: Band Gap Voltage Stable Flag bit 1 = Indicates that the band gap voltage is stable 0 = Indicates that the band gap voltage is unstable bit 5 IRVST: Internal Reference Voltage Stable Flag bit 1 = Internal reference voltage is stable; the High-Voltage Detect logic generates the interrupt flag at the specified voltage range 0 = Internal reference voltage is unstable; the High-Voltage Detect logic will not generate the interrupt flag at the specified voltage range and the HLVD interrupt should not be enabled bit 4 Unimplemented: Read as `0' bit 3-0 HLVDL<3:0>: High/Low-Voltage Detection Limit bits 1111 = External analog input is used (input comes from the HLVDIN pin) 1110 = Trip Point 1(1) 1101 = Trip Point 2(1) 1100 = Trip Point 3(1) * * * 0100 = Trip Point 11(1) 00xx = Unused Note 1: For the actual trip point, see Section 33.0 "Electrical Characteristics". DS30005009C-page 388 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 30.0 Note: SPECIAL FEATURES 30.1.1 This data sheet summarizes the features of this group of PIC24F devices. It is not intended to be a comprehensive reference source. For more information, refer to the following sections of the "dsPIC33/PIC24 Family Reference Manual". The information in this data sheet supersedes the information in the FRMs. In PIC24FJ128GB204 family devices, the Configuration bytes are implemented as volatile memory. This means that configuration data must be programmed each time the device is powered up. Configuration data is stored in the four words at the top of the on-chip program memory space, known as the Flash Configuration Words. Their specific locations are shown in Table 30-1. These are packed representations of the actual device Configuration bits, whose actual locations are distributed among several locations in configuration space. The configuration data is automatically loaded from the Flash Configuration Words to the proper Configuration registers during device Resets. * "Watchdog Timer (WDT)" (DS39697) * "High-Level Device Integration" (DS39719) * "Programming and Diagnostics" (DS39716) Note: PIC24FJ128GB204 family devices include several features intended to maximize application flexibility and reliability, and minimize cost through elimination of external components. These are: * * * * * * The upper byte of all Flash Configuration Words in program memory should always be: `0000 0000'. This makes them appear to be NOP instructions in the remote event that their locations are ever executed by accident. Since Configuration bits are not implemented in the corresponding locations, writing `0's to these locations has no effect on device operation. Configuration Bits The Configuration bits can be programmed (read as `0'), or left unprogrammed (read as `1'), to select various device configurations. These bits are mapped starting at program memory location, F80000h. A detailed explanation of the various bit functions is provided in Register 30-1 through Register 30-6. Note: Note that address, F80000h, is beyond the user program memory space. In fact, it belongs to the configuration memory space (800000h-FFFFFFh), which can only be accessed using Table Reads and Table Writes. TABLE 30-1: Configuration data is reloaded on all types of device Resets. When creating applications for these devices, users should always specifically allocate the location of the Flash Configuration Word for configuration data. This is to make certain that program code is not stored in this address when the code is compiled. Flexible Configuration Watchdog Timer (WDT) Code Protection JTAG Boundary Scan Interface In-Circuit Serial ProgrammingTM (ICSPTM) In-Circuit Emulation (ICE) 30.1 CONSIDERATIONS FOR CONFIGURING PIC24FJ128GB204 FAMILY DEVICES Performing a page erase operation on the last page of program memory clears the Flash Configuration Words, enabling code protection as a result. Therefore, users should avoid performing page erase operations on the last page of program memory. FLASH CONFIGURATION WORD LOCATIONS FOR THE PIC24FJ128GB204 FAMILY Device Configuration Word Addresses 1 2 3 4 PIC24FJ64GB2XX ABFEh ABFCh ABFAh ABF8h PIC24FJ128GB2XX 157FEh 157FCh 157FAh 157F8h 2013-2015 Microchip Technology Inc. DS30005009C-page 389 PIC24FJ128GB204 FAMILY REGISTER 30-1: CW1: FLASH CONFIGURATION WORD 1 U-1 U-1 U-1 U-1 U-1 U-1 U-1 U-1 -- -- -- -- -- -- -- -- bit 23 bit 16 r-x R/PO-1 R/PO-1 R/PO-1 R/PO-1 R/PO-1 R/PO-1 R/PO-1 -- JTAGEN GCP GWRP DEBUG LPCFG ICS1 ICS0 bit 15 bit 8 R/PO-1 R/PO-1 R/PO-1 R/PO-1 R/PO-1 R/PO-1 R/PO-1 R/PO-1 FWDTEN1 FWDTEN0 WINDIS FWPSA WDTPS3 WDTPS2 WDTPS1 WDTPS0 bit 7 bit 0 Legend: r = Reserved bit PO = Program Once bit R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 23-16 Unimplemented: Read as `1' bit 15 Reserved: The value is unknown; program as `0' bit 14 JTAGEN: JTAG Port Enable bit 1 = JTAG port is enabled 0 = JTAG port is disabled bit 13 GCP: General Segment Program Memory Code Protection bit 1 = Code protection is disabled 0 = Code protection is enabled for the entire program memory space bit 12 GWRP: General Segment Code Flash Write Protection bit 1 = Writes to program memory are allowed 0 = Writes to program memory are not allowed bit 11 DEBUG: Background Debugger Enable bit 1 = Device resets into Operational mode 0 = Device resets into Debug mode bit 10 LPCFG: Low-Voltage/Retention Regulator Configuration bit 1 = Low-voltage/retention regulator is always disabled 0 = Low-power, low-voltage/retention regulator is enabled and controlled in firmware by the RETEN bit bit 9-8 ICS<1:0>: Emulator Pin Placement Select bits 11 = Emulator functions are shared with PGEC1/PGED1 10 = Emulator functions are shared with PGEC2/PGED2 01 = Emulator functions are shared with PGEC3/PGED3 00 = Reserved; do not use bit 7-6 FWDTEN<1:0>: Watchdog Timer Configuration bits 11 = WDT is always enabled; SWDTEN bit has no effect 10 = WDT is enabled and controlled in firmware by the SWDTEN bit 01 = WDT is enabled only in Run mode and disabled in Sleep modes; SWDTEN bit is disabled 00 = WDT is disabled; SWDTEN bit is disabled bit 5 WINDIS: Windowed Watchdog Timer Disable bit 1 = Standard Watchdog Timer is enabled 0 = Windowed Watchdog Timer is enabled (FWDTEN<1:0> must not be `00') DS30005009C-page 390 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 30-1: CW1: FLASH CONFIGURATION WORD 1 (CONTINUED) bit 4 FWPSA: WDT Prescaler Ratio Select bit 1 = Prescaler ratio of 1:128 0 = Prescaler ratio of 1:32 bit 3-0 WDTPS<3:0>: Watchdog Timer Postscaler Select bits 1111 = 1:32,768 1110 = 1:16,384 1101 = 1:8,192 1100 = 1:4,096 1011 = 1:2,048 1010 = 1:1,024 1001 = 1:512 1000 = 1:256 0111 = 1:128 0110 = 1:64 0101 = 1:32 0100 = 1:16 0011 = 1:8 0010 = 1:4 0001 = 1:2 0000 = 1:1 2013-2015 Microchip Technology Inc. DS30005009C-page 391 PIC24FJ128GB204 FAMILY REGISTER 30-2: CW2: FLASH CONFIGURATION WORD 2 U-1 U-1 U-1 U-1 U-1 U-1 U-1 U-1 -- -- -- -- -- -- -- -- bit 23 bit 16 R/PO-1 r-0 -- IESO R/PO-1 WDTCMX R/PO-1 R/PO-1 R/PO-1 R/PO-1 R/PO-1 ALTCMPI ALTRB6(2) FNOSC2 FNOSC1 FNOSC0 bit 15 bit 8 R/PO-1 R/PO-1 R/PO-1 R/PO-1 R/PO-1 r-1 R/PO-1 R/PO-1 FCKSM1 FCKSM0 OSCIOFCN WDTCLK1 WDTCLK0 -- POSCMD1 POSCMD0 bit 7 bit 0 Legend: r = Reserved bit PO = Program Once bit R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 23-16 Unimplemented: Read as `1' bit 15 IESO: Internal External Switchover bit 1 = IESO mode (Two-Speed Start-up) is enabled 0 = IESO mode (Two-Speed Start-up) is disabled bit 14 Reserved: Read as `0' bit 13 WDTCMX: WDT Clock Multiplex Control bit 1 = WDT clock source is determined by the WDTCLK<1:0> Configuration bits 0 = WDT always uses LPRC as its clock source bit 12 ALTCMPI: Alternate Comparator Input bit 1 = C1INC is on RB13, C2INC is on RB9 and C3INC is on RA0 0 = C1INC, C2INC and C3INC are on RB9 bit 11 ALTRB6: Alternate RB6 Pin Function Enable bit(2) 1 = Appends the RP6/ASCL1/PMD6 functions of RB6 to RA1 pin functions 0 = Keeps the RP6/ASCL1/PMD6 functions to RB6 bit 10-8 FNOSC<2:0>: Initial Oscillator Select bits 111 = Fast RC Oscillator with Postscaler (FRCDIV) 110 = Reserved 101 = Low-Power RC Oscillator (LPRC) 100 = Secondary Oscillator (SOSC) 011 = Primary Oscillator with PLL module (XTPLL, HSPLL, ECPLL) 010 = Primary Oscillator (XT, HS, EC) 001 = Fast RC Oscillator with Postscaler and PLL module (FRCPLL) 000 = Fast RC Oscillator (FRC) bit 7-6 FCKSM<1:0>: Clock Switching and Fail-Safe Clock Monitor Configuration bits 1x = Clock switching and Fail-Safe Clock Monitor are disabled 01 = Clock switching is enabled, Fail-Safe Clock Monitor is disabled 00 = Clock switching is enabled, Fail-Safe Clock Monitor is enabled Note 1: 2: The 31 kHz FRC source is used when a Windowed WDT mode is selected and the LPRC is not being used as the system clock. The LPRC is used when the device is in Sleep mode and in all other cases. When VBUS functionality is used, this Configuration bit must be programmed to `1'. DS30005009C-page 392 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 30-2: CW2: FLASH CONFIGURATION WORD 2 (CONTINUED) bit 5 OSCIOFCN: OSCO Pin Configuration bit If POSCMD<1:0> = 11 or 00: 1 = OSCO/CLKO/RA3 functions as CLKO (FOSC/2) 0 = OSCO/CLKO/RA3 functions as port I/O (RA3) If POSCMD<1:0> = 10 or 01: OSCIOFCN has no effect on OSCO/CLKO/RA3. bit 4-3 WDTCLK<1:0>: WDT Clock Source Select bits When WDTCMX = 1: 11 = LPRC 10 = Either the 31 kHz FRC source or LPRC, depending on device configuration(1) 01 = SOSC input 00 = System clock when active, LPRC while in Sleep mode When WDTCMX = 0: LPRC is always the WDT clock source. bit 2 Reserved: Configure as `1' bit 1-0 POSCMD<1:0>: Primary Oscillator Configuration bits 11 = Primary Oscillator mode is disabled 10 = HS Oscillator mode is selected 01 = XT Oscillator mode is selected 00 = EC Oscillator mode is selected Note 1: 2: The 31 kHz FRC source is used when a Windowed WDT mode is selected and the LPRC is not being used as the system clock. The LPRC is used when the device is in Sleep mode and in all other cases. When VBUS functionality is used, this Configuration bit must be programmed to `1'. 2013-2015 Microchip Technology Inc. DS30005009C-page 393 PIC24FJ128GB204 FAMILY REGISTER 30-3: CW3: FLASH CONFIGURATION WORD 3 U-1 U-1 U-1 U-1 U-1 U-1 U-1 U-1 -- -- -- -- -- -- -- -- bit 23 bit 16 R/PO-1 R/PO-1 R/PO-1 R/PO-1 R/PO-1 R/PO-1 R/PO-1 R/PO-1 WPEND WPCFG WPDIS BOREN PLLSS(4) WDTWIN1 WDTWIN0 SOSCSEL bit 15 bit 8 r-1 R/PO-1 R/PO-1 R/PO-1 R/PO-1 R/PO-1 R/PO-1 R/PO-1 -- WPFP6(3) WPFP5 WPFP4 WPFP3 WPFP2 WPFP1 WPFP0 bit 7 bit 0 Legend: r = Reserved bit PO = Program Once bit R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 23-16 Unimplemented: Read as `1' bit 15 WPEND: Segment Write Protection End Page Select bit 1 = Protected program memory segment upper boundary is at the last page of program memory; the lower boundary is the code page specified by WPFP<6:0> 0 = Protected program memory segment lower boundary is at the bottom of the program memory (000000h); upper boundary is the code page specified by WPFP<6:0> bit 14 WPCFG: Configuration Word Code Page Write Protection Select bit 1 = Last page (at the top of program memory) and Flash Configuration Words are not write-protected(1) 0 = Last page and Flash Configuration Words are write-protected provided WPDIS = 0 bit 13 WPDIS: Segment Write Protection Disable bit 1 = Segmented program memory write protection is disabled 0 = Segmented program memory write protection is enabled; protected segment is defined by the WPEND, WPCFG and WPFPx Configuration bits bit 12 BOREN: Brown-out Reset Enable bit 1 = BOR is enabled (all modes except Deep Sleep) 0 = BOR is disabled bit 11 PLLSS: PLL Secondary Selection Configuration bit(4) 1 = PLL is fed by the Primary Oscillator 0 = PLL is fed by the on-chip Fast RC (FRC) Oscillator bit 10-9 WDTWIN<1:0>: Watchdog Timer Window Width Select bits 11 = 25% 10 = 37.5% 01 = 50% 00 = 75% bit 8 SOSCSEL: SOSC Selection bit 1 = SOSC circuit is selected 0 = Digital (SCLKI) mode(2) Note 1: 2: 3: 4: Regardless of WPCFG status, if WPEND = 1 or if the WPFP<6:0> bits correspond to the Configuration Word page, the Configuration Word page is protected. Ensure that the SCLKI pin is made a digital input while using this configuration (see Table 11-1). For the 64K devices (PIC24FJ64GB2XX), maintain WPFP6 as `0'. This Configuration bit only takes effect when PLL is not being used. DS30005009C-page 394 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 30-3: CW3: FLASH CONFIGURATION WORD 3 (CONTINUED) bit 7 Reserved: Always maintain as `1' bit 6-0 WPFP<6:0>: Write-Protected Code Segment Boundary Page bits(3) Designates the 512 instruction words page boundary of the protected Code Segment. If WPEND = 1: Specifies the lower page boundary of the protected Code Segment; the last page being the last implemented page in the device. If WPEND = 0: Specifies the upper page boundary of the protected Code Segment; Page 0 being the lower boundary. Note 1: 2: 3: 4: Regardless of WPCFG status, if WPEND = 1 or if the WPFP<6:0> bits correspond to the Configuration Word page, the Configuration Word page is protected. Ensure that the SCLKI pin is made a digital input while using this configuration (see Table 11-1). For the 64K devices (PIC24FJ64GB2XX), maintain WPFP6 as `0'. This Configuration bit only takes effect when PLL is not being used. 2013-2015 Microchip Technology Inc. DS30005009C-page 395 PIC24FJ128GB204 FAMILY REGISTER 30-4: CW4: FLASH CONFIGURATION WORD 4 U-1 U-1 U-1 U-1 U-1 U-1 U-1 U-1 -- -- -- -- -- -- -- -- bit 23 bit 16 R/PO-1 R/PO-1 R/PO-1 R/PO-1 R/PO-1 R/PO-1 r-1 R/PO-1 IOL1WAY I2C1SEL PLLDIV3 PLLDIV2 PLLDIV1 PLLDIV0 -- DSSWEN bit 15 bit 8 R/PO-1 R/PO-1 DSWDTEN DSBOREN R/PO-1 R/PO-1 DSWDTOSC DSWDTPS4 R/PO-1 R/PO-1 R/PO-1 R/PO-1 DSWDTPS3 DSWDTPS2 DSWDTPS1 DSWDTPS0 bit 7 bit 0 Legend: r = Reserved bit PO = Program Once bit R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown bit 23-16 Unimplemented: Read as `1' bit 15 IOL1WAY: IOLOCK One-Way Set Enable bit 1 = The IOLOCK bit (OSCCON<6>) can be set once, provided the unlock sequence has been completed; once set, the Peripheral Pin Select registers cannot be written to a second time 0 = The IOLOCK bit can be set and cleared as needed, provided the unlock sequence has been completed bit 14 I2C1SEL: Alternate I2C1 Location Select bit 1 = I2C1 uses the SCL1 and SDA1 pins 0 = I2C1 uses the ASCL1 and ASDA1 pins bit 13-10 PLLDIV<3:0>: USB 96 MHz PLL Prescaler Select bits 1111 = PLL is disabled 1110 = 8x PLL is selected 1101 = 6x PLL is selected 1100 = 4x PLL is selected 1011 .... = Reserved, do not use 1000 0111 = Oscillator input divided by 12 (48 MHz input) 0110 = Oscillator input divided by 8 (32 MHz input) 0101 = Oscillator input divided by 6 (24 MHz input) 0100 = Oscillator input divided by 5 (20 MHz input) 0011 = Oscillator input divided by 4 (16 MHz input) 0010 = Oscillator input divided by 3 (12 MHz input) 0001 = Oscillator input divided by 2 (8 MHz input) 0000 = Oscillator input used directly (4 MHz input) bit 9 Reserved: Always maintain as `1' bit 8 DSSWEN: Deep Sleep Software Control Select bit 1 = Deep Sleep operation is enabled and controlled by the DSEN bit 0 = Deep Sleep operation is disabled bit 7 DSWDTEN: Deep Sleep Watchdog Timer Enable bit 1 = Deep Sleep WDT is enabled 0 = Deep Sleep WDT is disabled DS30005009C-page 396 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY REGISTER 30-4: CW4: FLASH CONFIGURATION WORD 4 (CONTINUED) bit 6 DSBOREN: Deep Sleep Brown-out Reset Enable bit 1 = BOR is enabled in Deep Sleep mode 0 = BOR is disabled in Deep Sleep mode (remains active in other Sleep modes) bit 5 DSWDTOSC: Deep Sleep Watchdog Timer Clock Select bit 1 = Clock source is LPRC 0 = Clock source is SOSC bit 4-0 DSWDTPS<4:0>: Deep Sleep Watchdog Timer Postscaler Select bits 11111 = 1:68,719,476,736 (25.7 days) 11110 = 1:34,359,738,368(12.8 days) 11101 = 1:17,179,869,184 (6.4 days) 11100 = 1:8,589,934592 (77.0 hours) 11011 = 1:4,294,967,296 (38.5 hours) 11010 = 1:2,147,483,648 (19.2 hours) 11001 = 1:1,073,741,824 (9.6 hours) 11000 = 1:536,870,912 (4.8 hours) 10111 = 1:268,435,456 (2.4 hours) 10110 = 1:134,217,728 (72.2 minutes) 10101 = 1:67,108,864 (36.1 minutes) 10100 = 1:33,554,432 (18.0 minutes) 10011 = 1:16,777,216 (9.0 minutes) 10010 = 1:8,388,608 (4.5 minutes) 10001 = 1:4,194,304 (135.3s) 10000 = 1:2,097,152 (67.7s) 01111 = 1:1,048,576 (33.825s) 01110 = 1:524,288 (16.912s) 01101 = 1:262,114 (8.456s) 01100 = 1:131,072 (4.228s) 01011 = 1:65,536 (2.114s) 01010 = 1:32,768 (1.057s) 01001 = 1:16,384 (528.5 ms) 01000 = 1:8,192 (264.3 ms) 00111 = 1:4,096 (132.1 ms) 00110 = 1:2,048 (66.1 ms) 00101 = 1:1,024 (33 ms) 00100 = 1:512 (16.5 ms) 00011 = 1:256 (8.3 ms) 00010 = 1:128 (4.1 ms) 00001 = 1:64 (2.1 ms) 00000 = 1:32 (1 ms) 2013-2015 Microchip Technology Inc. DS30005009C-page 397 PIC24FJ128GB204 FAMILY REGISTER 30-5: DEVID: DEVICE ID REGISTER U-1 U-1 U-1 U-1 U-1 U-1 U-1 U-1 -- -- -- -- -- -- -- -- bit 23 bit 16 R R R R R R R R FAMID7 FAMID6 FAMID5 FAMID4 FAMID3 FAMID2 FAMID1 FAMID0 bit 15 bit 8 R R R R R R R R DEV7 DEV6 DEV5 DEV4 DEV3 DEV2 DEV1 DEV0 bit 7 bit 0 Legend: R = Readable bit U = Unimplemented bit, read as `1' bit 23-16 Unimplemented: Read as `1' bit 15-8 FAMID<7:0>: Device Family Identifier bits 0100 1100 = PIC24FJ128GB204 family bit 7-0 DEV<7:0>: Individual Device Identifier bits 0101 1000 = PIC24FJ64GB202 0101 1010 = PIC24FJ128GB202 0101 1001 = PIC24FJ64GB204 0101 1011 = PIC24FJ128GB204 REGISTER 30-6: DEVREV: DEVICE REVISION REGISTER U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 23 bit 16 U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 -- -- -- -- -- -- -- -- bit 15 bit 8 U-0 U-0 U-0 U-0 R R R R -- -- -- -- REV3 REV2 REV1 REV0 bit 7 bit 0 Legend: R = Readable bit bit 23-4 Unimplemented: Read as `1' bit 3-0 REV<3:0>: Device Revision Identifier bits DS30005009C-page 398 U = Unimplemented bit, read as `1' 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 30.2 On-Chip Voltage Regulator All PIC24FJ128GB204 family devices power their core digital logic at a nominal 1.8V. This may create an issue for designs that are required to operate at a higher typical voltage, such as 3.3V. To simplify system design, all devices in the PIC24FJ128GB204 family incorporate an on-chip regulator that allows the device to run its core logic from VDD. This regulator is always enabled. It provides a constant voltage (1.8V nominal) to the digital core logic, from a VDD of about 2.1V, all the way up to the device's VDDMAX. It does not have the capability to boost VDD levels. In order to prevent "brown-out" conditions when the voltage drops too low for the regulator, the Brown-out Reset occurs. Then, the regulator output follows VDD with a typical voltage drop of 300 mV. A low-ESR capacitor (such as ceramic) must be connected to the VCAP pin (Figure 30-1). This helps to maintain the stability of the regulator. The recommended value for the filter capacitor (CEFC) is provided in Section 33.1 "DC Characteristics". FIGURE 30-1: CONNECTIONS FOR THE ON-CHIP REGULATOR 3.3V(1) PIC24FXXXGB2XX VDD VCAP CEFC (10 F typ) Note 1: VSS This is a typical operating voltage. Refer to Section 33.0 "Electrical Characteristics" for the full operating ranges of VDD. 30.2.1 ON-CHIP REGULATOR AND POR The voltage regulator requires a small amount of time to transition from a disabled or standby state into normal operating mode. During this time, designated as TVREG, code execution is disabled. TVREG is applied every time the device resumes operation after any power-down, including Sleep mode. TVREG is determined by the status of the VREGS bit (RCON<8>). Refer to Section 33.0 "Electrical Characteristics" for more information on TVREG. Note: 30.2.2 For more information, see Section 33.0 "Electrical Characteristics". The information in this data sheet supersedes the information in the "dsPIC33/PIC24 Family Reference Manual". VOLTAGE REGULATOR STANDBY MODE The on-chip regulator always consumes a small incremental amount of current over IDD/IPD, including when the device is in Sleep mode, even though the core digital logic does not require power. To provide additional savings in applications where power resources are critical, the regulator can be made to enter Standby mode on its own, whenever the device goes into Sleep mode. This feature is controlled by the VREGS bit (RCON<8>). Clearing the VREGS bit enables the Standby mode. When waking up from Standby mode, the regulator needs to wait for TVREG to expire before wake-up. 30.2.3 LOW-VOLTAGE/RETENTION REGULATOR When a power-saving mode, such as Sleep is used, PIC24FJ128GB204 family devices may use a separate low-power, low-voltage/retention regulator to power critical circuits. This regulator, which operates at 1.2V nominal, maintains power to data RAM and the RTCC while all other core digital logic is powered down. It operates only in Sleep and VBAT modes. The low-voltage/retention regulator is described in more detail in Section 10.1.3 "Low-Voltage/Retention Regulator". 2013-2015 Microchip Technology Inc. DS30005009C-page 399 PIC24FJ128GB204 FAMILY 30.3 Watchdog Timer (WDT) For PIC24FJ128GB204 family devices, the WDT is driven by the LPRC Oscillator. When the WDT is enabled, the clock source is also enabled. The nominal WDT clock source from LPRC is 31 kHz. This feeds a prescaler that can be configured for either 5-bit (divide-by-32) or 7-bit (divide-by-128) operation. The prescaler is set by the FWPSA Configuration bit. With a 31 kHz input, the prescaler yields a nominal WDT Time-out (TWDT) period of 1 ms in 5-bit mode or 4 ms in 7-bit mode. A variable postscaler divides down the WDT prescaler output and allows for a wide range of time-out periods. The postscaler is controlled by the WDTPS<3:0> Configuration bits (CW1<3:0>), which allows the selection of a total of 16 settings, from 1:1 to 1:32,768. Using the prescaler and postscaler time-out periods, ranges from 1 ms to 131 seconds can be achieved. The WDT, prescaler and postscaler are reset: * On any device Reset * On the completion of a clock switch, whether invoked by software (i.e., setting the OSWEN bit after changing the NOSCx bits) or by hardware (i.e., Fail-Safe Clock Monitor) * When a PWRSAV instruction is executed (i.e., Sleep or Idle mode is entered) * When the device exits Sleep or Idle mode to resume normal operation * By a CLRWDT instruction during normal execution Note: 30.3.1 The CLRWDT and PWRSAV instructions clear the prescaler and postscaler counts when executed. WINDOWED OPERATION The Watchdog Timer has an optional Fixed Window mode of operation. In this Windowed mode, CLRWDT instructions can only reset the WDT during the window width, 25%, 37.5%, 50% or 75% of the programmed WDT period, controlled by the WDTWIN<1:0> Configuration bits (CW3<10:9>). A CLRWDT instruction executed before that window causes a WDT Reset, similar to a WDT time-out. Windowed WDT mode is enabled by programming the WINDIS Configuration bit (CW1<5>) to `0'. 30.3.2 CONTROL REGISTER The WDT is enabled or disabled by the FWDTEN<1:0> Configuration bits. When the Configuration bits, FWDTEN<1:0> = 11, the WDT is always enabled. If the WDT is enabled, it will continue to run during Sleep or Idle modes. When the WDT time-out occurs, the device will wake the device and code execution will continue from where the PWRSAV instruction was executed. The corresponding SLEEP or IDLE (RCON<3:2>) bits will need to be cleared in software after the device wakes up. FIGURE 30-2: The WDT Flag bit, WDTO (RCON<4>), is not automatically cleared following a WDT time-out. To detect subsequent WDT events, the flag must be cleared in software. The WDT can be optionally controlled in software when the Configuration bits, FWDTEN<1:0> = 10. When FWDTEN<1:0> = 00, the Watchdog Timer is always disabled. The WDT is enabled in software by setting the SWDTEN control bit (RCON<5>). The SWDTEN control bit is cleared on any device Reset. The software WDT option allows the user to enable the WDT for critical code segments and disable the WDT during non-critical segments for maximum power savings. WDT BLOCK DIAGRAM SWDTEN FWDTEN<1:0> LPRC Control FWPSA WDTPS<3:0> Prescaler (5-bit/7-bit) LPRC Input 31 kHz Wake from Sleep WDT Counter Postscaler 1:1 to 1:32.768 WDT Overflow Reset 1 ms/4 ms All Device Resets Transition to New Clock Source Exit Sleep or Idle Mode CLRWDT Instr. PWRSAV Instr. Sleep or Idle Mode DS30005009C-page 400 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 30.4 Program Verification and Code Protection PIC24FJ128GB204 family devices provide two complimentary methods to protect application code from overwrites and erasures. These also help to protect the device from inadvertent configuration changes during run time. 30.4.1 GENERAL SEGMENT PROTECTION For all devices in the PIC24FJ128GB204 family, the on-chip program memory space is treated as a single block, known as the General Segment (GS). Code protection for this block is controlled by one Configuration bit, GCP. This bit inhibits external reads and writes to the program memory space. It has no direct effect in normal execution mode. Write protection is controlled by the GWRP bit in Configuration Word 1. When GWRP is programmed to `0', internal write and erase operations to program memory are blocked. 30.4.2 CODE SEGMENT PROTECTION In addition to global General Segment protection, a separate subrange of the program memory space can be individually protected against writes and erases. This area can be used for many purposes where a separate block of write and erase-protected code is needed, such as bootloader applications. Unlike common boot block implementations, the specially protected segment in the PIC24FJ128GB204 family devices can be located by the user anywhere in the program space and configured in a wide range of sizes. Code Segment (CS) protection provides an added level of protection to a designated area of program memory by disabling the NVM safety interlock whenever a write or erase address falls within a specified range. It does not override General Segment protection controlled by the GCP or GWRP bits. For example, if GCP and GWRP are enabled, enabling segmented code protection for the bottom half of program memory does not undo General Segment protection for the top half. The size and type of protection for the segmented code range are configured by the WPFPx, WPEND, WPCFG and WPDIS bits in Configuration Word 3. Code Segment protection is enabled by programming the WPDIS bit (= 0). The WPFPx bits specify the size of the segment to be protected, by specifying the 512-word code page that is the start or end of the protected segment. The specified region is inclusive, therefore, this page will also be protected. The WPEND bit determines if the protected segment uses the top or bottom of the program space as a boundary. Programming WPEND (= 0) sets the bottom of program memory (000000h) as the lower boundary of the protected segment. Leaving WPEND unprogrammed (= 1) protects the specified page through the last page of implemented program memory, including the Configuration Word locations. A separate bit, WPCFG, is used to protect the last page of program space, including the Flash Configuration Words. Programming WPCFG (= 0) protects the last page in addition to the pages selected by the WPEND and WPFP<6:0> bits setting. This is useful in circumstances where write protection is needed for both the Code Segment in the bottom of the memory and the Flash Configuration Words. The various options for segment code protection are shown in Table 30-2. TABLE 30-2: CODE SEGMENT PROTECTION CONFIGURATION OPTIONS Segment Configuration Bits Write/Erase Protection of Code Segment WPDIS WPEND WPCFG 1 x x No additional protection is enabled; all program memory protection is configured by GCP and GWRP. 0 1 x Addresses from the first address of the code page are defined by WPFP<6:0> through the end of implemented program memory (inclusive); erase/write-protected, including Flash Configuration Words. 0 0 1 Address, 000000h through the last address of the code page, is defined by WPFP<6:0> (inclusive); erase/write-protected. 0 0 0 Address, 000000h through the last address of the code page, is defined by WPFP<6:0> (inclusive); erase/write-protected and the last page, including the Flash Configuration Words, are erase/write-protected. 2013-2015 Microchip Technology Inc. DS30005009C-page 401 PIC24FJ128GB204 FAMILY 30.4.3 CONFIGURATION REGISTER PROTECTION The Configuration registers are protected against inadvertent or unwanted changes or reads in two ways. The primary protection method is the same as that of the RP registers - shadow registers contain a complimentary value which is constantly compared with the actual value. To safeguard against unpredictable events, Configuration bit changes, resulting from individual cell-level disruptions (such as ESD events), will cause a parity error and trigger a device Reset. The data for the Configuration registers is derived from the Flash Configuration Words in program memory. When the GCP bit is set, the source data for device configuration is also protected as a consequence. Even if General Segment protection is not enabled, the device configuration can be protected by using the appropriate Code Segment protection setting. 30.5 JTAG Interface PIC24FJ128GB204 family devices implement a JTAG interface, which supports boundary scan device testing and programming. DS30005009C-page 402 30.6 In-Circuit Serial Programming PIC24FJ128GB204 family microcontrollers can be serially programmed while in the end application circuit. This is simply done with two lines for clock (PGECx) and data (PGEDx), and three other lines for power (VDD), ground (VSS) and MCLR. This allows customers to manufacture boards with unprogrammed devices and then program the microcontroller just before shipping the product. This also allows the most recent firmware or a custom firmware to be programmed. 30.7 In-Circuit Debugger When MPLAB(R) ICD 3 is selected as a debugger, the in-circuit debugging functionality is enabled. This function allows simple debugging functions when used with MPLAB X IDE. Debugging functionality is controlled through the PGECx (Emulation/Debug Clock) and PGEDx (Emulation/Debug Data) pins. To use the in-circuit debugger function of the device, the design must implement ICSP connections to MCLR, VDD, VSS and the PGECx/PGEDx pin pair, designated by the ICSx Configuration bits. In addition, when the feature is enabled, some of the resources are not available for general use. These resources include the first 80 bytes of data RAM and two I/O pins. 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 31.0 DEVELOPMENT SUPPORT The PIC(R) microcontrollers (MCU) and dsPIC(R) digital signal controllers (DSC) are supported with a full range of software and hardware development tools: * Integrated Development Environment - MPLAB(R) X IDE Software * Compilers/Assemblers/Linkers - MPLAB XC Compiler - MPASMTM Assembler - MPLINKTM Object Linker/ MPLIBTM Object Librarian - MPLAB Assembler/Linker/Librarian for Various Device Families * Simulators - MPLAB X SIM Software Simulator * Emulators - MPLAB REAL ICETM In-Circuit Emulator * In-Circuit Debuggers/Programmers - MPLAB ICD 3 - PICkitTM 3 * Device Programmers - MPLAB PM3 Device Programmer * Low-Cost Demonstration/Development Boards, Evaluation Kits and Starter Kits * Third-party development tools 31.1 MPLAB X Integrated Development Environment Software The MPLAB X IDE is a single, unified graphical user interface for Microchip and third-party software, and hardware development tool that runs on Windows(R), Linux and Mac OS(R) X. Based on the NetBeans IDE, MPLAB X IDE is an entirely new IDE with a host of free software components and plug-ins for highperformance application development and debugging. Moving between tools and upgrading from software simulators to hardware debugging and programming tools is simple with the seamless user interface. With complete project management, visual call graphs, a configurable watch window and a feature-rich editor that includes code completion and context menus, MPLAB X IDE is flexible and friendly enough for new users. With the ability to support multiple tools on multiple projects with simultaneous debugging, MPLAB X IDE is also suitable for the needs of experienced users. Feature-Rich Editor: * Color syntax highlighting * Smart code completion makes suggestions and provides hints as you type * Automatic code formatting based on user-defined rules * Live parsing User-Friendly, Customizable Interface: * Fully customizable interface: toolbars, toolbar buttons, windows, window placement, etc. * Call graph window Project-Based Workspaces: * * * * Multiple projects Multiple tools Multiple configurations Simultaneous debugging sessions File History and Bug Tracking: * Local file history feature * Built-in support for Bugzilla issue tracker 2013-2015 Microchip Technology Inc. DS30005009C-page 403 PIC24FJ128GB204 FAMILY 31.2 MPLAB XC Compilers The MPLAB XC Compilers are complete ANSI C compilers for all of Microchip's 8, 16, and 32-bit MCU and DSC devices. These compilers provide powerful integration capabilities, superior code optimization and ease of use. MPLAB XC Compilers run on Windows, Linux or MAC OS X. For easy source level debugging, the compilers provide debug information that is optimized to the MPLAB X IDE. The free MPLAB XC Compiler editions support all devices and commands, with no time or memory restrictions, and offer sufficient code optimization for most applications. MPLAB XC Compilers include an assembler, linker and utilities. The assembler generates relocatable object files that can then be archived or linked with other relocatable object files and archives to create an executable file. MPLAB XC Compiler uses the assembler to produce its object file. Notable features of the assembler include: * * * * * * Support for the entire device instruction set Support for fixed-point and floating-point data Command-line interface Rich directive set Flexible macro language MPLAB X IDE compatibility 31.3 MPASM Assembler The MPASM Assembler is a full-featured, universal macro assembler for PIC10/12/16/18 MCUs. The MPASM Assembler generates relocatable object files for the MPLINK Object Linker, Intel(R) standard HEX files, MAP files to detail memory usage and symbol reference, absolute LST files that contain source lines and generated machine code, and COFF files for debugging. The MPASM Assembler features include: 31.4 MPLINK Object Linker/ MPLIB Object Librarian The MPLINK Object Linker combines relocatable objects created by the MPASM Assembler. It can link relocatable objects from precompiled libraries, using directives from a linker script. The MPLIB Object Librarian manages the creation and modification of library files of precompiled code. When a routine from a library is called from a source file, only the modules that contain that routine will be linked in with the application. This allows large libraries to be used efficiently in many different applications. The object linker/library features include: * Efficient linking of single libraries instead of many smaller files * Enhanced code maintainability by grouping related modules together * Flexible creation of libraries with easy module listing, replacement, deletion and extraction 31.5 MPLAB Assembler, Linker and Librarian for Various Device Families MPLAB Assembler produces relocatable machine code from symbolic assembly language for PIC24, PIC32 and dsPIC DSC devices. MPLAB XC Compiler uses the assembler to produce its object file. The assembler generates relocatable object files that can then be archived or linked with other relocatable object files and archives to create an executable file. Notable features of the assembler include: * * * * * * Support for the entire device instruction set Support for fixed-point and floating-point data Command-line interface Rich directive set Flexible macro language MPLAB X IDE compatibility * Integration into MPLAB X IDE projects * User-defined macros to streamline assembly code * Conditional assembly for multipurpose source files * Directives that allow complete control over the assembly process DS30005009C-page 404 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 31.6 MPLAB X SIM Software Simulator The MPLAB X SIM Software Simulator allows code development in a PC-hosted environment by simulating the PIC MCUs and dsPIC DSCs on an instruction level. On any given instruction, the data areas can be examined or modified and stimuli can be applied from a comprehensive stimulus controller. Registers can be logged to files for further run-time analysis. The trace buffer and logic analyzer display extend the power of the simulator to record and track program execution, actions on I/O, most peripherals and internal registers. The MPLAB X SIM Software Simulator fully supports symbolic debugging using the MPLAB XC Compilers, and the MPASM and MPLAB Assemblers. The software simulator offers the flexibility to develop and debug code outside of the hardware laboratory environment, making it an excellent, economical software development tool. 31.7 MPLAB REAL ICE In-Circuit Emulator System The MPLAB REAL ICE In-Circuit Emulator System is Microchip's next generation high-speed emulator for Microchip Flash DSC and MCU devices. It debugs and programs all 8, 16 and 32-bit MCU, and DSC devices with the easy-to-use, powerful graphical user interface of the MPLAB X IDE. The emulator is connected to the design engineer's PC using a high-speed USB 2.0 interface and is connected to the target with either a connector compatible with in-circuit debugger systems (RJ-11) or with the new high-speed, noise tolerant, LowVoltage Differential Signal (LVDS) interconnection (CAT5). The emulator is field upgradable through future firmware downloads in MPLAB X IDE. MPLAB REAL ICE offers significant advantages over competitive emulators including full-speed emulation, run-time variable watches, trace analysis, complex breakpoints, logic probes, a ruggedized probe interface and long (up to three meters) interconnection cables. 2013-2015 Microchip Technology Inc. 31.8 MPLAB ICD 3 In-Circuit Debugger System The MPLAB ICD 3 In-Circuit Debugger System is Microchip's most cost-effective, high-speed hardware debugger/programmer for Microchip Flash DSC and MCU devices. It debugs and programs PIC Flash microcontrollers and dsPIC DSCs with the powerful, yet easy-to-use graphical user interface of the MPLAB X IDE. The MPLAB ICD 3 In-Circuit Debugger probe is connected to the design engineer's PC using a highspeed USB 2.0 interface and is connected to the target with a connector compatible with the MPLAB ICD 2 or MPLAB REAL ICE systems (RJ-11). MPLAB ICD 3 supports all MPLAB ICD 2 headers. 31.9 PICkit 3 In-Circuit Debugger/ Programmer The MPLAB PICkit 3 allows debugging and programming of PIC and dsPIC Flash microcontrollers at a most affordable price point using the powerful graphical user interface of the MPLAB X IDE. The MPLAB PICkit 3 is connected to the design engineer's PC using a fullspeed USB interface and can be connected to the target via a Microchip debug (RJ-11) connector (compatible with MPLAB ICD 3 and MPLAB REAL ICE). The connector uses two device I/O pins and the Reset line to implement in-circuit debugging and In-Circuit Serial ProgrammingTM (ICSPTM). 31.10 MPLAB PM3 Device Programmer The MPLAB PM3 Device Programmer is a universal, CE compliant device programmer with programmable voltage verification at VDDMIN and VDDMAX for maximum reliability. It features a large LCD display (128 x 64) for menus and error messages, and a modular, detachable socket assembly to support various package types. The ICSP cable assembly is included as a standard item. In Stand-Alone mode, the MPLAB PM3 Device Programmer can read, verify and program PIC devices without a PC connection. It can also set code protection in this mode. The MPLAB PM3 connects to the host PC via an RS-232 or USB cable. The MPLAB PM3 has high-speed communications and optimized algorithms for quick programming of large memory devices, and incorporates an MMC card for file storage and data applications. DS30005009C-page 405 PIC24FJ128GB204 FAMILY 31.11 Demonstration/Development Boards, Evaluation Kits, and Starter Kits A wide variety of demonstration, development and evaluation boards for various PIC MCUs and dsPIC DSCs allows quick application development on fully functional systems. Most boards include prototyping areas for adding custom circuitry and provide application firmware and source code for examination and modification. The boards support a variety of features, including LEDs, temperature sensors, switches, speakers, RS-232 interfaces, LCD displays, potentiometers and additional EEPROM memory. 31.12 Third-Party Development Tools Microchip also offers a great collection of tools from third-party vendors. These tools are carefully selected to offer good value and unique functionality. * Device Programmers and Gang Programmers from companies, such as SoftLog and CCS * Software Tools from companies, such as Gimpel and Trace Systems * Protocol Analyzers from companies, such as Saleae and Total Phase * Demonstration Boards from companies, such as MikroElektronika, Digilent(R) and Olimex * Embedded Ethernet Solutions from companies, such as EZ Web Lynx, WIZnet and IPLogika(R) The demonstration and development boards can be used in teaching environments, for prototyping custom circuits and for learning about various microcontroller applications. In addition to the PICDEMTM and dsPICDEMTM demonstration/development board series of circuits, Microchip has a line of evaluation kits and demonstration software for analog filter design, KEELOQ(R) security ICs, CAN, IrDA(R), PowerSmart battery management, SEEVAL(R) evaluation system, Sigma-Delta ADC, flow rate sensing, plus many more. Also available are starter kits that contain everything needed to experience the specified device. This usually includes a single application and debug capability, all on one board. Check the Microchip web page (www.microchip.com) for the complete list of demonstration, development and evaluation kits. DS30005009C-page 406 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 32.0 Note: INSTRUCTION SET SUMMARY This chapter is a brief summary of the PIC24F Instruction Set Architecture (ISA) and is not intended to be a comprehensive reference source. The PIC24F instruction set adds many enhancements to the previous PIC(R) MCU instruction sets, while maintaining an easy migration from previous PIC MCU instruction sets. Most instructions are a single program memory word. Only three instructions require two program memory locations. Each single-word instruction is a 24-bit word divided into an 8-bit opcode, which specifies the instruction type and one or more operands, which further specify the operation of the instruction. The instruction set is highly orthogonal and is grouped into four basic categories: * * * * * A literal value to be loaded into a W register or file register (specified by the value of `k') * The W register or file register where the literal value is to be loaded (specified by `Wb' or `f') However, literal instructions that involve arithmetic or logical operations use some of the following operands: * The first source operand, which is a register, `Wb', without any address modifier * The second source operand, which is a literal value * The destination of the result (only if not the same as the first source operand), which is typically a register, `Wd', with or without an address modifier The control instructions may use some of the following operands: * A program memory address * The mode of the Table Read and Table Write instructions Word or byte-oriented operations Bit-oriented operations Literal operations Control operations Table 32-1 shows the general symbols used in describing the instructions. The PIC24F instruction set summary in Table 32-2 lists all the instructions, along with the status flags affected by each instruction. Most word or byte-oriented W register instructions (including barrel shift instructions) have three operands: * The first source operand, which is typically a register, `Wb', without any address modifier * The second source operand, which is typically a register, `Ws', with or without an address modifier * The destination of the result, which is typically a register, `Wd', with or without an address modifier However, word or byte-oriented file register instructions have two operands: * The file register specified by the value, `f' * The destination, which could either be the file register, `f', or the W0 register, which is denoted as `WREG' Most bit-oriented instructions (including rotate/shift instructions) have two operands: The literal instructions that involve data movement may use some of the following operands: simple All instructions are a single word, except for certain double-word instructions, which were made double-word instructions so that all the required information is available in these 48 bits. In the second word, the 8 MSbs are `0's. If this second word is executed as an instruction (by itself), it will execute as a NOP. Most single-word instructions are executed in a single instruction cycle, unless a conditional test is true or the Program Counter is changed as a result of the instruction. In these cases, the execution takes two instruction cycles, with the additional instruction cycle(s) executed as a NOP. Notable exceptions are the BRA (unconditional/computed branch), indirect CALL/GOTO, all Table Reads and Table Writes, and RETURN/RETFIE instructions, which are single-word instructions but take two or three cycles. Certain instructions that involve skipping over the subsequent instruction require either two or three cycles if the skip is performed, depending on whether the instruction being skipped is a single-word or two-word instruction. Moreover, double-word moves require two cycles. The double-word instructions execute in two instruction cycles. * The W register (with or without an address modifier) or file register (specified by the value of `Ws' or `f') * The bit in the W register or file register (specified by a literal value or indirectly by the contents of register, `Wb') 2013-2015 Microchip Technology Inc. DS30005009C-page 407 PIC24FJ128GB204 FAMILY TABLE 32-1: SYMBOLS USED IN OPCODE DESCRIPTIONS Field Description #text Means literal defined by "text" (text) Means "content of text" <text] Means "the location addressed by text" { } Optional field or operation <n:m> Register bit field .b Byte mode selection .d Double-Word mode selection .S Shadow register select .w Word mode selection (default) bit4 4-bit Bit Selection field (used in word addressed instructions) {0...15} C, DC, N, OV, Z MCU Status bits: Carry, Digit Carry, Negative, Overflow, Sticky Zero Expr Absolute address, label or expression (resolved by the linker) f File register address {0000h...1FFFh} lit1 1-bit unsigned literal {0,1} lit4 4-bit unsigned literal {0...15} lit5 5-bit unsigned literal {0...31} lit8 8-bit unsigned literal {0...255} lit10 10-bit unsigned literal {0...255} for Byte mode, {0:1023} for Word mode lit14 14-bit unsigned literal {0...16383} lit16 16-bit unsigned literal {0...65535} lit23 23-bit unsigned literal {0...8388607}; LSB must be `0' None Field does not require an entry, may be blank PC Program Counter Slit10 10-bit signed literal {-512...511} Slit16 16-bit signed literal {-32768...32767} Slit6 6-bit signed literal {-16...16} Wb Base W register {W0..W15} Wd Destination W register { Wd, [Wd], [Wd++], [Wd--], [++Wd], [--Wd] } Wdo Destination W register { Wnd, [Wnd], [Wnd++], [Wnd--], [++Wnd], [--Wnd], [Wnd+Wb] } Wm,Wn Dividend, Divisor Working register pair (direct addressing) Wn One of 16 Working registers {W0..W15} Wnd One of 16 Destination Working registers {W0..W15} Wns One of 16 Source Working registers {W0..W15} WREG W0 (Working register used in file register instructions) Ws Source W register { Ws, [Ws], [Ws++], [Ws--], [++Ws], [--Ws] } Wso Source W register { Wns, [Wns], [Wns++], [Wns--], [++Wns], [--Wns], [Wns+Wb] } DS30005009C-page 408 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY TABLE 32-2: INSTRUCTION SET OVERVIEW Assembly Mnemonic ADD ADDC AND ASR BCLR BRA BSET BSW BTG BTSC Assembly Syntax Description # of Words # of Cycles Status Flags Affected ADD f f = f + WREG 1 1 C, DC, N, OV, Z ADD f,WREG WREG = f + WREG 1 1 C, DC, N, OV, Z ADD #lit10,Wn Wd = lit10 + Wd 1 1 C, DC, N, OV, Z ADD Wb,Ws,Wd Wd = Wb + Ws 1 1 C, DC, N, OV, Z C, DC, N, OV, Z ADD Wb,#lit5,Wd Wd = Wb + lit5 1 1 ADDC f f = f + WREG + (C) 1 1 C, DC, N, OV, Z ADDC f,WREG WREG = f + WREG + (C) 1 1 C, DC, N, OV, Z ADDC #lit10,Wn Wd = lit10 + Wd + (C) 1 1 C, DC, N, OV, Z ADDC Wb,Ws,Wd Wd = Wb + Ws + (C) 1 1 C, DC, N, OV, Z ADDC Wb,#lit5,Wd Wd = Wb + lit5 + (C) 1 1 C, DC, N, OV, Z AND f f = f .AND. WREG 1 1 N, Z AND f,WREG WREG = f .AND. WREG 1 1 N, Z AND #lit10,Wn Wd = lit10 .AND. Wd 1 1 N, Z AND Wb,Ws,Wd Wd = Wb .AND. Ws 1 1 N, Z AND Wb,#lit5,Wd Wd = Wb .AND. lit5 1 1 N, Z ASR f f = Arithmetic Right Shift f 1 1 C, N, OV, Z ASR f,WREG WREG = Arithmetic Right Shift f 1 1 C, N, OV, Z ASR Ws,Wd Wd = Arithmetic Right Shift Ws 1 1 C, N, OV, Z ASR Wb,Wns,Wnd Wnd = Arithmetic Right Shift Wb by Wns 1 1 N, Z ASR Wb,#lit5,Wnd Wnd = Arithmetic Right Shift Wb by lit5 1 1 N, Z BCLR f,#bit4 Bit Clear f 1 1 None BCLR Ws,#bit4 Bit Clear Ws 1 1 None BRA C,Expr Branch if Carry 1 1 (2) None BRA GE,Expr Branch if Greater than or Equal 1 1 (2) None BRA GEU,Expr Branch if Unsigned Greater than or Equal 1 1 (2) None BRA GT,Expr Branch if Greater than 1 1 (2) None BRA GTU,Expr Branch if Unsigned Greater than 1 1 (2) None BRA LE,Expr Branch if Less than or Equal 1 1 (2) None BRA LEU,Expr Branch if Unsigned Less than or Equal 1 1 (2) None BRA LT,Expr Branch if Less than 1 1 (2) None BRA LTU,Expr Branch if Unsigned Less than 1 1 (2) None BRA N,Expr Branch if Negative 1 1 (2) None BRA NC,Expr Branch if Not Carry 1 1 (2) None BRA NN,Expr Branch if Not Negative 1 1 (2) None BRA NOV,Expr Branch if Not Overflow 1 1 (2) None BRA NZ,Expr Branch if Not Zero 1 1 (2) None BRA OV,Expr Branch if Overflow 1 1 (2) None BRA Expr Branch Unconditionally 1 2 None BRA Z,Expr Branch if Zero 1 1 (2) None BRA Wn Computed Branch 1 2 None BSET f,#bit4 Bit Set f 1 1 None BSET Ws,#bit4 Bit Set Ws 1 1 None BSW.C Ws,Wb Write C bit to Ws<Wb> 1 1 None BSW.Z Ws,Wb Write Z bit to Ws<Wb> 1 1 None BTG f,#bit4 Bit Toggle f 1 1 None BTG Ws,#bit4 Bit Toggle Ws 1 1 None BTSC f,#bit4 Bit Test f, Skip if Clear 1 1 None (2 or 3) BTSC Ws,#bit4 Bit Test Ws, Skip if Clear 1 1 None (2 or 3) 2013-2015 Microchip Technology Inc. DS30005009C-page 409 PIC24FJ128GB204 FAMILY TABLE 32-2: INSTRUCTION SET OVERVIEW (CONTINUED) Assembly Mnemonic BTSS BTST BTSTS CALL CLR Assembly Syntax # of Words Description # of Cycles Status Flags Affected BTSS f,#bit4 Bit Test f, Skip if Set 1 1 None (2 or 3) BTSS Ws,#bit4 Bit Test Ws, Skip if Set 1 1 None (2 or 3) BTST f,#bit4 Bit Test f 1 1 Z BTST.C Ws,#bit4 Bit Test Ws to C 1 1 C BTST.Z Ws,#bit4 Bit Test Ws to Z 1 1 Z BTST.C Ws,Wb Bit Test Ws<Wb> to C 1 1 C BTST.Z Ws,Wb Bit Test Ws<Wb> to Z 1 1 Z BTSTS f,#bit4 Bit Test then Set f 1 1 Z BTSTS.C Ws,#bit4 Bit Test Ws to C, then Set 1 1 C BTSTS.Z Ws,#bit4 Bit Test Ws to Z, then Set 1 1 Z CALL lit23 Call Subroutine 2 2 None CALL Wn Call Indirect Subroutine 1 2 None CLR f f = 0x0000 1 1 None CLR WREG WREG = 0x0000 1 1 None CLR Ws Ws = 0x0000 1 1 None CLRWDT CLRWDT Clear Watchdog Timer 1 1 WDTO, Sleep COM COM f f=f 1 1 N, Z COM f,WREG WREG = f 1 1 N, Z COM Ws,Wd Wd = Ws 1 1 N, Z CP f Compare f with WREG 1 1 C, DC, N, OV, Z CP Wb,#lit5 Compare Wb with lit5 1 1 C, DC, N, OV, Z CP Wb,Ws Compare Wb with Ws (Wb - Ws) 1 1 C, DC, N, OV, Z CP0 CP0 f Compare f with 0x0000 1 1 C, DC, N, OV, Z CP0 Ws Compare Ws with 0x0000 1 1 C, DC, N, OV, Z CPB CPB f Compare f with WREG, with Borrow 1 1 C, DC, N, OV, Z CPB Wb,#lit5 Compare Wb with lit5, with Borrow 1 1 C, DC, N, OV, Z CPB Wb,Ws Compare Wb with Ws, with Borrow (Wb - Ws - C) 1 1 C, DC, N, OV, Z CPSEQ CPSEQ Wb,Wn Compare Wb with Wn, Skip if = 1 1 None (2 or 3) CPSGT CPSGT Wb,Wn Compare Wb with Wn, Skip if > 1 1 None (2 or 3) CPSLT CPSLT Wb,Wn Compare Wb with Wn, Skip if < 1 1 None (2 or 3) CPSNE CPSNE Wb,Wn Compare Wb with Wn, Skip if 1 1 None (2 or 3) DAW DAW.B Wn Wn = Decimal Adjust Wn 1 1 DEC DEC f f = f -1 1 1 C, DC, N, OV, Z DEC f,WREG WREG = f -1 1 1 C, DC, N, OV, Z CP DEC2 C DEC Ws,Wd Wd = Ws - 1 1 1 C, DC, N, OV, Z DEC2 f f=f-2 1 1 C, DC, N, OV, Z DEC2 f,WREG WREG = f - 2 1 1 C, DC, N, OV, Z DEC2 Ws,Wd Wd = Ws - 2 1 1 C, DC, N, OV, Z DISI DISI #lit14 Disable Interrupts for k Instruction Cycles 1 1 None DIV DIV.SW Wm,Wn Signed 16/16-bit Integer Divide 1 18 N, Z, C, OV DIV.SD Wm,Wn Signed 32/16-bit Integer Divide 1 18 N, Z, C, OV DIV.UW Wm,Wn Unsigned 16/16-bit Integer Divide 1 18 N, Z, C, OV DIV.UD Wm,Wn Unsigned 32/16-bit Integer Divide 1 18 N, Z, C, OV EXCH EXCH Wns,Wnd Swap Wns with Wnd 1 1 None FF1L FF1L Ws,Wnd Find First One from Left (MSb) Side 1 1 C FF1R FF1R Ws,Wnd Find First One from Right (LSb) Side 1 1 C DS30005009C-page 410 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY TABLE 32-2: INSTRUCTION SET OVERVIEW (CONTINUED) Assembly Mnemonic Assembly Syntax Description # of Words # of Cycles Status Flags Affected GOTO Expr Go to Address 2 2 GOTO Wn Go to Indirect 1 2 None INC f f=f+1 1 1 C, DC, N, OV, Z INC f,WREG WREG = f + 1 1 1 C, DC, N, OV, Z INC Ws,Wd Wd = Ws + 1 1 1 C, DC, N, OV, Z INC2 f f=f+2 1 1 C, DC, N, OV, Z INC2 f,WREG WREG = f + 2 1 1 C, DC, N, OV, Z INC2 Ws,Wd Wd = Ws + 2 1 1 C, DC, N, OV, Z IOR f f = f .IOR. WREG 1 1 N, Z IOR f,WREG WREG = f .IOR. WREG 1 1 N, Z IOR #lit10,Wn Wd = lit10 .IOR. Wd 1 1 N, Z IOR Wb,Ws,Wd Wd = Wb .IOR. Ws 1 1 N, Z IOR Wb,#lit5,Wd Wd = Wb .IOR. lit5 1 1 N, Z LNK LNK #lit14 Link Frame Pointer 1 1 None LSR LSR f f = Logical Right Shift f 1 1 C, N, OV, Z LSR f,WREG WREG = Logical Right Shift f 1 1 C, N, OV, Z LSR Ws,Wd Wd = Logical Right Shift Ws 1 1 C, N, OV, Z LSR Wb,Wns,Wnd Wnd = Logical Right Shift Wb by Wns 1 1 N, Z LSR Wb,#lit5,Wnd Wnd = Logical Right Shift Wb by lit5 1 1 N, Z MOV f,Wn Move f to Wn 1 1 None MOV [Wns+Slit10],Wnd Move [Wns+Slit10] to Wnd 1 1 None MOV f Move f to f 1 1 N, Z MOV f,WREG Move f to WREG 1 1 N, Z MOV #lit16,Wn Move 16-bit Literal to Wn 1 1 None MOV.b #lit8,Wn Move 8-bit Literal to Wn 1 1 None MOV Wn,f Move Wn to f 1 1 None MOV Wns,[Wns+Slit10] Move Wns to [Wns+Slit10] 1 1 MOV Wso,Wdo Move Ws to Wd 1 1 MOV WREG,f Move WREG to f 1 1 N, Z MOV.D Wns,Wd Move Double from W(ns):W(ns+1) to Wd 1 2 None GOTO INC INC2 IOR MOV MUL NEG NOP POP None MOV.D Ws,Wnd Move Double from Ws to W(nd+1):W(nd) 1 2 None MUL.SS Wb,Ws,Wnd {Wnd+1, Wnd} = Signed(Wb) * Signed(Ws) 1 1 None MUL.SU Wb,Ws,Wnd {Wnd+1, Wnd} = Signed(Wb) * Unsigned(Ws) 1 1 None MUL.US Wb,Ws,Wnd {Wnd+1, Wnd} = Unsigned(Wb) * Signed(Ws) 1 1 None MUL.UU Wb,Ws,Wnd {Wnd+1, Wnd} = Unsigned(Wb) * Unsigned(Ws) 1 1 None MUL.SU Wb,#lit5,Wnd {Wnd+1, Wnd} = Signed(Wb) * Unsigned(lit5) 1 1 None MUL.UU Wb,#lit5,Wnd {Wnd+1, Wnd} = Unsigned(Wb) * Unsigned(lit5) 1 1 None MUL f W3:W2 = f * WREG 1 1 None NEG f f=f+1 1 1 C, DC, N, OV, Z NEG f,WREG WREG = f + 1 1 1 C, DC, N, OV, Z NEG Ws,Wd Wd = Ws + 1 1 1 C, DC, N, OV, Z NOP No Operation 1 1 None NOPR No Operation 1 1 None POP f Pop f from Top-of-Stack (TOS) 1 1 None POP Wdo Pop from Top-of-Stack (TOS) to Wdo 1 1 None POP.D Wnd Pop from Top-of-Stack (TOS) to W(nd):W(nd+1) 1 2 None Pop Shadow Registers 1 1 All None POP.S PUSH None PUSH f Push f to Top-of-Stack (TOS) 1 1 PUSH Wso Push Wso to Top-of-Stack (TOS) 1 1 None PUSH.D Wns Push W(ns):W(ns+1) to Top-of-Stack (TOS) 1 2 None Push Shadow Registers 1 1 None PUSH.S 2013-2015 Microchip Technology Inc. DS30005009C-page 411 PIC24FJ128GB204 FAMILY TABLE 32-2: INSTRUCTION SET OVERVIEW (CONTINUED) Assembly Mnemonic Assembly Syntax Description # of Words # of Cycles Status Flags Affected PWRSAV PWRSAV #lit1 Go into Sleep or Idle mode 1 1 RCALL RCALL Expr Relative Call 1 2 None RCALL Wn Computed Call 1 2 None REPEAT #lit14 Repeat Next Instruction lit14 + 1 times 1 1 None REPEAT Wn Repeat Next Instruction (Wn) + 1 times 1 1 None None REPEAT WDTO, Sleep RESET RESET Software Device Reset 1 1 RETFIE RETFIE Return from Interrupt 1 3 (2) None RETLW RETLW Return with Literal in Wn 1 3 (2) None RETURN RETURN Return from Subroutine 1 3 (2) None RLC RLC f f = Rotate Left through Carry f 1 1 C, N, Z RLC f,WREG WREG = Rotate Left through Carry f 1 1 C, N, Z RLC Ws,Wd Wd = Rotate Left through Carry Ws 1 1 C, N, Z RLNC f f = Rotate Left (No Carry) f 1 1 N, Z RLNC f,WREG WREG = Rotate Left (No Carry) f 1 1 N, Z RLNC Ws,Wd Wd = Rotate Left (No Carry) Ws 1 1 N, Z RRC f f = Rotate Right through Carry f 1 1 C, N, Z RRC f,WREG WREG = Rotate Right through Carry f 1 1 C, N, Z RRC Ws,Wd Wd = Rotate Right through Carry Ws 1 1 C, N, Z RRNC f f = Rotate Right (No Carry) f 1 1 N, Z RRNC f,WREG WREG = Rotate Right (No Carry) f 1 1 N, Z RLNC RRC RRNC #lit10,Wn RRNC Ws,Wd Wd = Rotate Right (No Carry) Ws 1 1 N, Z SE SE Ws,Wnd Wnd = Sign-Extended Ws 1 1 C, N, Z SETM SETM f f = FFFFh 1 1 None SETM WREG WREG = FFFFh 1 1 None SETM Ws Ws = FFFFh 1 1 None SL f f = Left Shift f 1 1 C, N, OV, Z SL f,WREG WREG = Left Shift f 1 1 C, N, OV, Z SL Ws,Wd Wd = Left Shift Ws 1 1 C, N, OV, Z SL Wb,Wns,Wnd Wnd = Left Shift Wb by Wns 1 1 N, Z SL Wb,#lit5,Wnd Wnd = Left Shift Wb by lit5 1 1 N, Z SUB f f = f - WREG 1 1 C, DC, N, OV, Z SUB f,WREG WREG = f - WREG 1 1 C, DC, N, OV, Z SUB #lit10,Wn Wn = Wn - lit10 1 1 C, DC, N, OV, Z SUB Wb,Ws,Wd Wd = Wb - Ws 1 1 C, DC, N, OV, Z SL SUB SUBB SUBR SUBBR SWAP SUB Wb,#lit5,Wd Wd = Wb - lit5 1 1 C, DC, N, OV, Z SUBB f f = f - WREG - (C) 1 1 C, DC, N, OV, Z SUBB f,WREG WREG = f - WREG - (C) 1 1 C, DC, N, OV, Z SUBB #lit10,Wn Wn = Wn - lit10 - (C) 1 1 C, DC, N, OV, Z C, DC, N, OV, Z SUBB Wb,Ws,Wd Wd = Wb - Ws - (C) 1 1 SUBB Wb,#lit5,Wd Wd = Wb - lit5 - (C) 1 1 C, DC, N, OV, Z SUBR f f = WREG - f 1 1 C, DC, N, OV, Z SUBR f,WREG WREG = WREG - f 1 1 C, DC, N, OV, Z SUBR Wb,Ws,Wd Wd = Ws - Wb 1 1 C, DC, N, OV, Z SUBR Wb,#lit5,Wd Wd = lit5 - Wb 1 1 C, DC, N, OV, Z SUBBR f f = WREG - f - (C) 1 1 C, DC, N, OV, Z SUBBR f,WREG WREG = WREG - f - (C) 1 1 C, DC, N, OV, Z C, DC, N, OV, Z SUBBR Wb,Ws,Wd Wd = Ws - Wb - (C) 1 1 SUBBR Wb,#lit5,Wd Wd = lit5 - Wb - (C) 1 1 C, DC, N, OV, Z SWAP.b Wn Wn = Nibble Swap Wn 1 1 None SWAP Wn Wn = Byte Swap Wn 1 1 None DS30005009C-page 412 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY TABLE 32-2: INSTRUCTION SET OVERVIEW (CONTINUED) Assembly Mnemonic Assembly Syntax Description # of Words # of Cycles Status Flags Affected TBLRDH TBLRDH Ws,Wd Read Prog<23:16> to Wd<7:0> 1 2 TBLRDL TBLRDL Ws,Wd Read Prog<15:0> to Wd 1 2 None TBLWTH TBLWTH Ws,Wd Write Ws<7:0> to Prog<23:16> 1 2 None TBLWTL TBLWTL Ws,Wd Write Ws to Prog<15:0> 1 2 None ULNK ULNK Unlink Frame Pointer 1 1 None XOR XOR f f = f .XOR. WREG 1 1 N, Z XOR f,WREG WREG = f .XOR. WREG 1 1 N, Z XOR #lit10,Wn Wd = lit10 .XOR. Wd 1 1 N, Z XOR Wb,Ws,Wd Wd = Wb .XOR. Ws 1 1 N, Z XOR Wb,#lit5,Wd Wd = Wb .XOR. lit5 1 1 N, Z ZE Ws,Wnd Wnd = Zero-Extend Ws 1 1 C, Z, N ZE 2013-2015 Microchip Technology Inc. None DS30005009C-page 413 PIC24FJ128GB204 FAMILY NOTES: DS30005009C-page 414 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 33.0 ELECTRICAL CHARACTERISTICS This section provides an overview of the PIC24FJ128GB204 family electrical characteristics. Additional information will be provided in future revisions of this document as it becomes available. Absolute maximum ratings for the PIC24FJ128GB204 family are listed below. Exposure to these maximum rating conditions for extended periods may affect device reliability. Functional operation of the device at these, or any other conditions above the parameters indicated in the operation listings of this specification, is not implied. Absolute Maximum Ratings() Ambient temperature under bias.............................................................................................................-40C to +100C Storage temperature .............................................................................................................................. -65C to +150C Voltage on VDD with respect to VSS ......................................................................................................... -0.3V to +4.0V Voltage on any general purpose digital or analog pin (not 5.5V tolerant) with respect to VSS ....... -0.3V to (VDD + 0.3V) Voltage on any general purpose digital or analog pin (5.5V tolerant, including MCLR) with respect to VSS: When VDD = 0V: .......................................................................................................................... -0.3V to +4.0V When VDD 2.0V: ....................................................................................................................... -0.3V to +6.0V Voltage on AVDD with respect to VSS ................................................... (VDD - 0.3V) to (lesser of: 4.0V or (VDD + 0.3V)) Voltage on AVSS with respect to VSS ........................................................................................................ -0.3V to +0.3V Voltage on VBAT with respect to VSS ........................................................................................................ . -0.3V to +4.0V Voltage on VUSB3V3 with respect to VSS ..................................................................................... (VCAP - 0.3V) to +4.0V Voltage on VBUS with respect to VSS ....................................................................................................... -0.3V to +6.0V Voltage on D+ or D- with respect to VSS: 0 source impedance (Note 1).................................................................................-0.5V to (VUSB3V3 + 0.5V) Source Impedance 28, VUSB3V3 3.0V ................................................................................ -1.0V to +4.6V Maximum current out of VSS pin ...........................................................................................................................300 mA Maximum current into VDD pin (Note 2)................................................................................................................250 mA Maximum output current sunk by any I/O pin..........................................................................................................25 mA Maximum output current sourced by any I/O pin ....................................................................................................25 mA Maximum current sunk by all ports .......................................................................................................................200 mA Maximum current sourced by all ports (Note 2)....................................................................................................200 mA Note 1: 2: The original USB 2.0 Specifications indicated that USB devices should withstand 24-hour short circuits of D+ or D- to VBUS voltages. This requirement was later removed in an Engineering Change Notice (ECN) supplement to the USB Specifications, which supersedes the original specifications. PIC24FJ128GB204 family devices will typically be able to survive this short-circuit test, but it is recommended to adhere to the absolute maximum specified here to avoid damaging the device. Maximum allowable current is a function of device maximum power dissipation (see Table 33-1). NOTICE: Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operation listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability. 2013-2015 Microchip Technology Inc. DS30005009C-page 415 PIC24FJ128GB204 FAMILY 33.1 DC Characteristics FIGURE 33-1: PIC24FJ128GB204 FAMILY VOLTAGE-FREQUENCY GRAPH (INDUSTRIAL) 3.6V 3.6V Voltage (VDD) PIC24FJXXXGB2XX (Note 1) (Note 1) 32 MHz Frequency Note 1: TABLE 33-1: Lower operating boundary is 2.0V or VBOR (when BOR is enabled), whichever is lower. For best analog performance, operation above 2.2V is suggested, but not required. THERMAL OPERATING CONDITIONS Rating Symbol Min Typ Max Unit Operating Junction Temperature Range TJ -40 -- +125 C Operating Ambient Temperature Range TA -40 -- +85 C PIC24FJ128GB204: Power Dissipation: Internal Chip Power Dissipation: PINT = VDD x (IDD - IOH) PD PINT + PI/O W PDMAX (TJ - TA)/JA W I/O Pin Power Dissipation: PI/O = ({VDD - VOH} x IOH) + (VOL x IOL) Maximum Allowed Power Dissipation TABLE 33-2: THERMAL PACKAGING CHARACTERISTICS Characteristic Symbol Typ Max Unit Notes JA 49 -- C/W (Note 1) Package Thermal Resistance, 6x6x0.9 mm 28-Pin QFN-S JA 33.7 -- C/W (Note 1) Package Thermal Resistance, 8x8 mm 44-Pin QFN JA 28 -- C/W (Note 1) Package Thermal Resistance, 7.50 mm 28-Pin SOIC Package Thermal Resistance, 10x10x1 mm 44-Pin TQFP JA 39.3 -- C/W (Note 1) Package Thermal Resistance, 5.30 mm 28-Pin SSOP JA -- -- C/W (Note 1) Package Thermal Resistance, 300 mil 28-Pin SPDIP JA -- -- C/W (Note 1) Note 1: Junction to ambient thermal resistance; Theta-JA (JA) numbers are achieved by package simulations. DS30005009C-page 416 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY TABLE 33-3: DC CHARACTERISTICS: TEMPERATURE AND VOLTAGE SPECIFICATIONS DC CHARACTERISTICS Param Symbol No. Characteristic Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended Min Typ Max Units 2.0 -- 3.6 V Conditions Operating Voltage DC10 VDD Supply Voltage DC12 VDR RAM Data Retention Voltage(1) DC16 VPOR VDD Start Voltage to Ensure Internal Power-on Reset Signal BOR disabled VBOR -- 3.6 V BOR enabled Greater of: VPORREL or VBOR -- -- V VBOR used only if BOR is enabled (BOREN = 1) VSS -- -- V (Note 2) DC16A VPORREL VDD Power-on Reset Release Voltage 1.80 1.88 1.95 V (Note 3) DC17A SRVDD Recommended VDD Rise Rate to Ensure Internal Power-on Reset Signal 0.05 -- -- V/ms DC17B VBOR Brown-out Reset Voltage on VDD Transition, High-to-Low 2.0 2.1 2.2 V Note 1: 2: 3: 0-3.3V in 66 ms, 0-2.5V in 50 ms (Note 2) (Note 3) This is the limit to which VDD may be lowered and the RAM contents will always be retained. If the VPOR or SRVDD parameters are not met, or the application experiences slow power-down VDD ramp rates, it is recommended to enable and use BOR. On a rising VDD power-up sequence, application firmware execution begins at the higher of the VPORREL or VBOR level (when BOREN = 1). 2013-2015 Microchip Technology Inc. DS30005009C-page 417 PIC24FJ128GB204 FAMILY TABLE 33-4: DC CHARACTERISTICS: OPERATING CURRENT (IDD) Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended DC CHARACTERISTICS Parameter No. Typical(1) Max Units Operating Temperature VDD 2.0V Conditions Operating Current (IDD)(2) DC19 0.20 0.28 mA -40C to +125C DC20A 0.21 0.28 mA -40C to +125C 3.3V DC20 0.38 0.52 mA -40C to +125C 2.0V 0.39 0.52 mA -40C to +125C 3.3V DC23 1.5 2.0 mA -40C to +125C 2.0V 1.5 2.0 mA -40C to +125C 3.3V DC24 5.6 7.6 mA -40C to +125C 2.0V 5.7 7.6 mA -40C to +125C 3.3V 23 78 A -40C to +85C 2.0V DC31 Note 1: 2: -- 98 A +125C 2.0V 25 80 A -40C to +85C 3.3V -- 100 A +125C 3.3V 0.5 MIPS, FOSC = 1 MHz 1 MIPS, FOSC = 2 MHz 4 MIPS, FOSC = 8 MHz 16 MIPS, FOSC = 32 MHz LPRC (15.5 KIPS), FOSC = 31 kHz Data in the "Typical" column is at 3.3V, +25C unless otherwise stated. Typical parameters are for design guidance only and are not tested. The test conditions for all IDD measurements are as follows: OSC1 driven with external square wave from rail-to-rail. All I/O pins are configured as outputs and driven to VSS. MCLR = VDD; WDT and FSCM are disabled. CPU, program memory and data memory are operational. No peripheral modules are operating; however, every peripheral is being clocked (PMDx bits are all zeroed). DS30005009C-page 418 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY TABLE 33-5: DC CHARACTERISTICS: IDLE CURRENT (IIDLE) Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended DC CHARACTERISTICS Parameter No. Typical(1) Max Units Operating Temperature VDD Conditions Idle Current (IIDLE)(2) DC40 DC43 DC47 DC50 DC51 Note 1: 2: 116 150 A -40C to +85C 2.0V -- 170 A +125C 2.0V 123 160 A -40C to +85C 3.3V -- 180 A +125C 3.3V 0.39 0.5 mA -40C to +85C 2.0V -- 0.52 mA +125C 2.0V 0.41 0.54 mA -40C to +85C 3.3V -- 0.56 mA +125C 3.3V 1.5 1.9 mA -40C to +85C 2.0V -- 2 mA +125C 2.0V 1.6 2.0 mA -40C to +85C 3.3V -- 2.1 mA +125C 3.3V 0.54 0.61 mA -40C to +85C 2.0V 0.54 0.64 mA -40C to +85C 3.3V 17 78 A -40C to +85C 2.0V -- 128 A +125C 2.0V 18 80 A -40C to +85C 3.3V -- 130 A +125C 3.3V 1 MIPS, FOSC = 2 MHz 4 MIPS, FOSC = 8 MHz 16 MIPS, FOSC = 32 MHz 4 MIPS (FRC), FOSC = 8 MHz LPRC (15.5 KIPS), FOSC = 31 kHz Data in the "Typical" column is at 3.3V, +25C unless otherwise stated. Parameters are for design guidance only and are not tested. Base IIDLE current is measured with the core off, the clock on and all modules turned off. Peripheral Module Disable SFR registers are zeroed. All I/O pins are configured as inputs and pulled to VSS. 2013-2015 Microchip Technology Inc. DS30005009C-page 419 PIC24FJ128GB204 FAMILY TABLE 33-6: DC CHARACTERISTICS: POWER-DOWN CURRENT (IPD) Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended DC CHARACTERISTICS Parameter Typical(1) No. Max Units Operating Temperature Conditions VDD Power-Down Current (IPD)(5,6) DC60 DC61 DC70 DC74 Note 1: 2: 3: 4: 5: 6: 2.9 17 A -40C 4.3 17 A +25C 8.3 27.5 A +60C 20 27.5 A +85C -- 79 A +125C 2.9 18 A -40C 4.3 18 A +25C 8.4 28 A +60C 20.5 28 A +85C -- 80 A +125C 0.07 -- A -40C 0.38 -- A +25C 2.6 -- A +60C 9.0 -- A +125C 0.09 -- A -40C 0.42 -- A +25C 2.75 -- A +60C 9.0 -- A +125C 0.1 700 nA -40C 18 700 nA +25C 230 1700 nA +60C 1.8 3.0 A +85C -- 24 A +125C 5 900 nA -40C 75 900 nA +25C 540 3450 nA +60C 1.5 6.0 A +85C -- 48 A +125C 0.4 2.0 A -40C to +125C 2.0V Sleep(2) 3.3V 2.0V Low-Voltage Sleep(3) 3.3V 2.0V Deep Sleep 3.3V 0V RTCC with VBAT mode (LPRC/SOSC)(4) Data in the Typical column is at 3.3V, +25C unless otherwise stated. Parameters are for design guidance only and are not tested. The retention low-voltage regulator is disabled; RETEN (RCON<12>) = 0, LPCFG (CW1<10>) = 1. The retention low-voltage regulator is enabled; RETEN (RCON<12>) = 1, LPCFG (CW1<10>) = 0. The VBAT pin is connected to the battery and RTCC is running with VDD = 0. Base IPD is measured with all peripherals and clocks shut down. All I/Os are configured as inputs and pulled to VSS. WDT, etc., are all switched off. These currents are measured on the device containing the most memory in this family. DS30005009C-page 420 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY TABLE 33-7: DC CHARACTERISTICS: CURRENT (BOR, WDT, DSBOR, DSWDT)(4) Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended DC CHARACTERISTICS Parameter No. Typical(1) Max Units Operating Temperature VDD Conditions Incremental Current Brown-out Reset (BOR)(2) DC25 3.1 5.0 A -40C to +125C 2.0V 4.3 6.0 A -40C to +125C 3.3V BOR(2) Incremental Current Watchdog Timer (WDT)(2) DC71 0.8 1.5 A -40C to +125C 2.0V 0.8 1.5 A -40C to +125C 3.3V WDT(2) Incremental Current High/Low-Voltage Detect (HLVD)(2) DC75 4.2 15 A -40C to +125C 2.0V 4.2 15 A -40C to +125C 3.3V HLVD(2) Incremental Current Real-Time Clock and Calendar (RTCC)(2) DC77 DC77A 0.3 1.0 A -40C to +125C 2.0V 0.35 1.0 A -40C to +125C 3.3V 0.3 1.0 A -40C to +125C 2.0V 0.35 1.0 A -40C to +125C 3.3V RTCC (with SOSC)(2) RTCC (with LPRC)(2) Incremental Current Deep Sleep BOR (DSBOR)(2) DC81 0.11 0.40 A -40C to +125C 2.0V 0.12 0.40 A -40C to +125C 3.3V Deep Sleep BOR(2) Incremental Current Deep Sleep Watchdog Timer Reset (DSWDT)(2) DC80 0.24 0.40 A -40C to +125C 2.0V 0.24 0.40 A -40C to +125C 3.3V 1.5 -- A -40C to +125C 3.3V VBAT = 2V 4 -- A -40C to +125C 3.3V VBAT = 3.3V Deep Sleep WDT(2) VBAT A/D Monitor(3) DC91 Note 1: 2: 3: 4: Data in the Typical column is at 3.3V, +25C unless otherwise stated. Parameters are for design guidance only and are not tested. Incremental current while the module is enabled and running. The A/D channel is connected to the VBAT pin internally; this is the current during A/D VBAT operation. The current is the additional current consumed when the module is enabled. This current should be added to the base IPD current. 2013-2015 Microchip Technology Inc. DS30005009C-page 421 PIC24FJ128GB204 FAMILY TABLE 33-8: DC CHARACTERISTICS: I/O PIN INPUT SPECIFICATIONS DC CHARACTERISTICS Param Symbol No. VIL Characteristic Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended Min Typ(1) Max Units VSS -- 0.2 VDD V Input Low Voltage(3) DI10 I/O Pins with ST Buffer DI11 I/O Pins with TTL Buffer VSS -- 0.15 VDD V DI15 MCLR VSS -- 0.2 VDD V DI16 OSCI (XT mode) VSS -- 0.2 VDD V DI17 OSCI (HS mode) VSS -- 0.2 VDD V DI18 I/O Pins with I2CTM Buffer VSS -- 0.3 VDD V I/O Pins with SMBus Buffer VSS -- 0.8 V I/O Pins with ST Buffer: with Analog Functions Digital Only 0.8 VDD 0.8 VDD -- -- VDD 5.5 V V I/O Pins with TTL Buffer: with Analog Functions Digital Only 0.25 VDD + 0.8 0.25 VDD + 0.8 -- -- VDD 5.5 V V DI19 VIH DI20 DI21 Conditions SMBus enabled Input High Voltage(3) DI25 MCLR 0.8 VDD -- VDD V DI26 OSCI (XT mode) 0.7 VDD -- VDD V DI27 OSCI (HS mode) 0.7 VDD -- VDD V DI28 I/O Pins with I2C Buffer: with Analog Functions Digital Only 0.7 VDD 0.7 VDD -- -- VDD 5.5 V V I/O Pins with SMBus Buffer: with Analog Functions Digital Only 2.1 2.1 -- -- VDD 5.5 V V 2.5V VPIN VDD CNxx Pull-up Current 150 340 550 A VDD = 3.3V, VPIN = VSS CNxx Pull-Down Current 150 310 550 A VDD = 3.3V, VPIN = VDD DI29 DI30 ICNPU DI30A ICNPD IIL Input Leakage Current(2) DI50 I/O Ports -- -- 1 A VSS VPIN VDD, pin at high-impedance DI51 Analog Input Pins -- -- 1 A VSS VPIN VDD, pin at high-impedance DI55 MCLR -- -- 1 A VSS VPIN VDD DI56 OSCI/CLKI -- -- 1 A VSS VPIN VDD, EC, XT and HS modes Note 1: 2: 3: Data in the "Typ" column is at 3.3V, +25C unless otherwise stated. Parameters are for design guidance only and are not tested. Negative current is defined as current sourced by the pin. Refer to Table 1-3 for I/O pin buffer types. DS30005009C-page 422 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY TABLE 33-9: DC CHARACTERISTICS: I/O PIN OUTPUT SPECIFICATIONS DC CHARACTERISTICS Param Symbol No. VOL DO10 VOH Units Conditions -- -- 0.4 V IOL = 6.6 mA, VDD = 3.6V -- -- 0.4 V IOL = 5.0 mA, VDD = 2V -- -- 0.4 V IOL = 6.6 mA, VDD = 3.6V -- -- 0.4 V IOL = 5.0 mA, VDD = 2V 3.0 -- -- V IOH = -3.0 mA, VDD = 3.6V Output High Voltage I/O Ports DO26 Max Output Low Voltage OSCO/CLKO DO20 Typ(1) Min I/O Ports DO16 Note 1: Characteristic Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended OSCO/CLKO 2.4 -- -- V IOH = -6.0 mA, VDD = 3.6V 1.65 -- -- V IOH = -1.0 mA, VDD = 2V 1.4 -- -- V IOH = -3.0 mA, VDD = 2V 2.4 -- -- V IOH = -6.0 mA, VDD = 3.6V 1.4 -- -- V IOH = -1.0 mA, VDD = 2V Data in the "Typ" column is at 3.3V, +25C unless otherwise stated. Parameters are for design guidance only and are not tested. TABLE 33-10: DC CHARACTERISTICS: PROGRAM MEMORY DC CHARACTERISTICS Param Symbol No. Characteristic Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended Min Typ(1) Max Units Conditions Program Flash Memory D130 EP Cell Endurance 20000 -- -- E/W D131 VPR VDD for Read VMIN -- 3.6 V VMIN = Minimum Operating Voltage D132B VDD for Self-Timed Write VMIN -- 3.6 V VMIN = Minimum Operating Voltage D133A TIW Self-Timed Word Write Cycle Time -- 20 -- s Self-Timed Row Write Cycle Time -- 1.5 -- ms D133B TIE Self-Timed Page Erase Time 20 -- 40 ms D134 TRETD Characteristic Retention 20 -- -- Year D135 IDDP Supply Current during Programming -- 5 -- mA D136 VOTP OTP Programming 3.1 -- 3.6 V D137 TOTP OTP Memory Write/Bit -- 500 -- s Note 1: -40C to +125C If no other specifications are violated Data in the "Typ" column is at 3.3V, +25C unless otherwise stated. 2013-2015 Microchip Technology Inc. DS30005009C-page 423 PIC24FJ128GB204 FAMILY TABLE 33-11: INTERNAL VOLTAGE REGULATOR SPECIFICATIONS Operating Conditions: Operating temperature Param No. Symbol -40C TA +85C for Industrial -40C TA +125C for Extended Characteristics Min Typ Max Units Comments DVR TVREG Voltage Regulator Start-up Time -- 10 -- s DVR10 VBG Internal Band Gap Reference -- 1.2 -- V DVR11 TBG Band Gap Reference Start-up Time -- 1 -- ms DVR20 VRGOUT Regulator Output Voltage -- 1.8 -- V VDD > 1.9V DVR21 CEFC External Filter Capacitor Value 4.7 10 -- F Series resistance < 3 recommended; < 5 required DVR30 VLVR Low-Voltage Regulator Output Voltage -- 1.2 -- V RETEN = 1, LPCFG = 0 VREGS = 1 with any POR or BOR TABLE 33-12: HIGH/LOW-VOLTAGE DETECT CHARACTERISTICS Operating Conditions: Operating temperature Param Symbol No. DC18 VHLVD DC101 VTHL Note 1: -40C TA +85C for Industrial -40C TA +125C for Extended Characteristic Min Typ Max Units HLVD Voltage on VDD HLVDL<3:0> = 0100(1) Transition HLVDL<3:0> = 0101 3.45 3.59 3.74 V 3.33 3.45 3.58 V HLVDL<3:0> = 0110 3.0 3.125 3.25 V HLVDL<3:0> = 0111 2.8 2.92 3.04 V HLVDL<3:0> = 1000 2.7 2.81 2.93 V HLVDL<3:0> = 1001 2.50 2.6 2.70 V HLVDL<3:0> = 1010 2.4 2.52 2.64 V HLVDL<3:0> = 1011 2.30 2.4 2.50 V HLVDL<3:0> = 1100 2.20 2.29 2.39 V HLVDL<3:0> = 1101 2.1 2.19 2.28 V HLVDL<3:0> = 1110 2.0 2.08 2.17 V HLVD Voltage on HLVDL<3:0> = 1111 HLVDIN Pin Transition -- 1.2 -- V Conditions Trip points for values of HLVD<3:0>, from `0000' to `0011', are not implemented. DS30005009C-page 424 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY TABLE 33-13: COMPARATOR DC SPECIFICATIONS Operating Conditions: Operating temperature Param No. Symbol 2.0V < VDD < 3.6V -40C TA +85C for Industrial -40C TA +125C for Extended Characteristic Min Typ Max Units Comments D300 VIOFF Input Offset Voltage -- 20 40 mV (Note 1) D301 VICM Input Common-Mode Voltage 0 -- VDD V (Note 1) D302 CMRR Common-Mode Rejection Ratio 55 -- -- dB (Note 1) D306 IQCMP AVDD Quiescent Current per Comparator -- 27 -- s Comparator enabled D307 TRESP Response Time -- 300 -- ns (Note 2) D308 TMC2OV Comparator Mode Change to Valid Output -- -- 10 s Note 1: 2: Parameters are characterized but not tested. Measured with one input at VDD/2 and the other transitioning from VSS to VDD, 40 mV step, 15 mV overdrive. TABLE 33-14: COMPARATOR VOLTAGE REFERENCE DC SPECIFICATIONS Operating Conditions: Operating temperature Param No. VR310 Symbol TSET 2.0V < VDD < 3.6V -40C TA +85C for Industrial -40C TA +125C for Extended Characteristic Settling Time VRD311 CVRAA Absolute Accuracy VRD312 CVRUR Unit Resistor Value (R) Note 1: Min Typ Max Units -- -- 10 s -100 -- 100 mV -- 4.5 -- k Comments (Note 1) Measures the interval while CVR<4:0> transitions from `11111' to `00000'. 2013-2015 Microchip Technology Inc. DS30005009C-page 425 PIC24FJ128GB204 FAMILY TABLE 33-15: VBAT OPERATING VOLTAGE SPECIFICATIONS Param Symbol No. Characteristic Min Typ Max Units Comments DVB01 VBT Operating Voltage 1.6 -- 3.6 V Battery connected to the VBAT pin DVB10 VBTADC VBAT A/D Monitoring Voltage Specification(1) 1.6 -- 3.6 V A/D monitoring the VBAT pin using the internal A/D channel Note 1: Measuring the A/D value using the A/D is represented by the equation: Measured Voltage = ((VBAT/2)/VDD) * 4096) for 12-bit A/D TABLE 33-16: CTMU CURRENT SOURCE SPECIFICATIONS DC CHARACTERISTICS Param No. Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended Min Typ(1) Max(3) Units DCT10 IOUT1 CTMU Current Source, Base Range 208 550 797 nA CTMUICON<9:8> = 00 DCT11 IOUT2 CTMU Current Source, 10x Range 3.32 5.5 7.67 A CTMUICON<9:8> = 01 DCT12 IOUT3 CTMU Current Source, 100x Range 32.22 55 77.78 A CTMUICON<9:8> = 10 DCT13 IOUT4 CTMU Current Source, 1000x Range 322 550 777 A CTMUICON<9:8> = 11(2) -- -3 -- mV/C Sym DCT21 V Note 1: 2: 3: Characteristic Temperature Diode Voltage Change per Degree Celsius Comments Conditions 2.5V < VDD < VDDMAX Nominal value at the center point of the current trim range (CTMUICON<15:10> = 000000). Do not use this current range with a temperature sensing diode. Maximum values are tested for +85C. TABLE 33-17: USB ON-THE-GO MODULE SPECIFICATIONS DC CHARACTERISTICS Param No. Symbol Characteristic Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated) Operating temperature -40C TA +85C for Industrial Min Typ Max Units Comments Greater of: 3.0 or (VDD - 0.3V) 3.3 3.6 V USB module enabled (VDD - 0.3V)(1) -- 3.6 V USB disabled, D+/D- are unused and externally pulled low or left in a high-impedance state (VDD - 0.3V) VDD 3.6 V USB disabled, D+/D- are used as general purpose I/Os Operating Voltage DUS01 VUSB3V3 USB Supply Voltage Note 1: The VUSB3V3 pin may also be left in a high-impedance state under these conditions. However, if the voltage floats below (VDD - 0.3V), this may result in higher IPD currents than specified. DS30005009C-page 426 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 33.2 AC Characteristics and Timing Parameters The information contained in this section defines the PIC24FJ128GB204 family AC characteristics and timing parameters. TABLE 33-18: TEMPERATURE AND VOLTAGE SPECIFICATIONS - AC AC CHARACTERISTICS FIGURE 33-2: Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended Operating voltage VDD range as described in Section 33.1 "DC Characteristics". LOAD CONDITIONS FOR DEVICE TIMING SPECIFICATIONS Load Condition 1 - for all pins except OSCO Load Condition 2 - for OSCO VDD/2 CL Pin RL VSS CL Pin RL = 464 CL = 50 pF for all pins except OSCO 15 pF for OSCO output VSS TABLE 33-19: CAPACITIVE LOADING REQUIREMENTS ON OUTPUT PINS Param Symbol No. Characteristic Min Typ(1) Max Units Conditions DO50 COSCO OSCO/CLKO Pin -- -- 15 pF In XT and HS modes when external clock is used to drive OSCI DO56 CIO All I/O Pins and OSCO -- -- 50 pF EC mode DO58 CB SCLx, SDAx -- -- 400 pF In I2CTM mode Note 1: Data in the "Typ" column is at 3.3V, +25C unless otherwise stated. Parameters are for design guidance only and are not tested. 2013-2015 Microchip Technology Inc. DS30005009C-page 427 PIC24FJ128GB204 FAMILY FIGURE 33-3: EXTERNAL CLOCK TIMING Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 OS30 OS30 Q1 Q2 Q3 OSCI OS20 OS31 OS31 OS25 CLKO OS40 OS41 TABLE 33-20: EXTERNAL CLOCK TIMING REQUIREMENTS Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended AC CHARACTERISTICS Param Symbol No. OS10 FOSC Characteristic Min Typ(1) Max Units External CLKI Frequency (External clocks allowed only in EC mode) DC 4 -- -- 32 48 MHz MHz EC ECPLL (Note 2) Oscillator Frequency 3.5 4 10 12 31 -- -- -- -- -- 10 8 32 32 33 MHz MHz MHz MHz kHz XT XTPLL HS HSPLL SOSC -- -- -- -- Conditions OS20 TOSC TOSC = 1/FOSC OS25 TCY Instruction Cycle Time(3) 62.5 -- DC ns OS30 TosL, TosH External Clock in (OSCI) High or Low Time 0.45 x TOSC -- -- ns EC OS31 TosR, TosF External Clock in (OSCI) Rise or Fall Time -- -- 20 ns EC OS40 TckR CLKO Rise Time(4) -- 6 10 ns -- 6 10 ns OS41 TckF Note 1: 2: 3: 4: CLKO Fall Time (4) See Parameter OS10 for FOSC value Data in the "Typ" column is at 3.3V, +25C unless otherwise stated. Parameters are for design guidance only and are not tested. Represents input to the system clock prescaler. PLL dividers and postscalers must still be configured so that the system clock frequency does not exceed the maximum frequency shown in Figure 33-1. Instruction cycle period (TCY) equals two times the input oscillator time base period. All specified values are based on characterization data for that particular oscillator type, under standard operating conditions, with the device executing code. Exceeding these specified limits may result in an unstable oscillator operation and/or higher than expected current consumption. All devices are tested to operate at "Min." values with an external clock applied to the OSCI/CLKI pin. When an external clock input is used, the "Max." cycle time limit is "DC" (no clock) for all devices. Measurements are taken in EC mode. The CLKO signal is measured on the OSCO pin. CLKO is low for the Q1-Q2 period (1/2 TCY) and high for the Q3-Q4 period (1/2 TCY). DS30005009C-page 428 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY TABLE 33-21: PLL CLOCK TIMING SPECIFICATIONS Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended AC CHARACTERISTICS Param No. OS50 Symbol FPLLI Min Typ(1) Max USB PLL Input Frequency Range 2 4 4 MHz ECPLL mode 2 4 4 MHz HSPLL mode 2 4 4 MHz XTPLL mode -- -- 128 s -0.25 -- 0.25 % Characteristic Units Conditions OS52 TLOCK USB PLL Start-up Time (Lock Time) OS53 DCLK CLKO Stability (Jitter) OS54 F4xPLL 4x PLL Input Frequency Range 2 -- 8 MHz 4xPLL OS55 F6xPLL 6x PLL Input Frequency Range 2 -- 5 MHz 6xPLL OS56 F8xPLL 8x PLL Input Frequency Range 2 -- 4 MHz 8xPLL OS57 TxPLLLOCK PLL Start-up Time (Lock Time) -- -- 24 s OS58 DxPLLCLK PLL CLKO Stability (Jitter) -2 -- 2 % Note 1: These parameters are characterized but not tested in manufacturing. TABLE 33-22: INTERNAL RC ACCURACY AC CHARACTERISTICS Param No. F20 Characteristic FRC Accuracy @ 8 MHz Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended Min Typ Max Units Conditions -1 0.15 1 % 2.0V VDD 3.6V, 0C TA +85C (Note 1) 1.5 -- 1.5 % 2.0V VDD 3.6V, -40C TA 0C -0.20 0.05 -0.20 % 2.0V VDD 3.6V, -40C TA +85C, self-tune enabled and locked (Note 2) -- 3 5 % 2.0V VDD 3.6V, TA +125C VCAP Output Voltage = 1.8V F21 LPRC @ 31 kHz -20 -- 20 % F22 OSCTUN Step-Size -- 0.05 -- %/bit F23 FRC Self-Tune Lock Time -- <5 8 ms Note 1: 2: 3: (Note 3) To achieve this accuracy, physical stress applied to the microcontroller package (ex., by flexing the PCB) must be kept to a minimum. Accuracy is measured with respect to the reference source. Time from reference clock stable, and in range, to FRC tuned within range specified by F20 (with self-tune). 2013-2015 Microchip Technology Inc. DS30005009C-page 429 PIC24FJ128GB204 FAMILY TABLE 33-23: RC OSCILLATOR START-UP TIME Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended AC CHARACTERISTICS Param Symbol No. Characteristic Min Typ Max Units FR0 TFRC FRC Oscillator Start-up Time -- 15 -- s FR1 TLPRC Low-Power RC Oscillator Start-up Time -- 50 -- s FIGURE 33-4: Conditions CLKO AND I/O TIMING CHARACTERISTICS I/O Pin (Input) DI35 DI40 I/O Pin (Output) New Value Old Value DO31 DO32 Note: Refer to Figure 33-2 for load conditions. TABLE 33-24: CLKO AND I/O TIMING REQUIREMENTS AC CHARACTERISTICS Param Symbol No. Characteristic Min Typ(1) Max Units -- 10 25 ns DO31 TIOR DO32 TIOF Port Output Fall Time -- 10 25 ns DI35 TINP INTx Pin High or Low Time (input) 20 -- -- ns DI40 TRBP CNxx High or Low Time (input) 2 -- -- TCY Note 1: Port Output Rise Time Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended Conditions Data in the "Typ" column is at 3.3V, +25C unless otherwise stated. DS30005009C-page 430 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY TABLE 33-25: RESET AND BROWN-OUT RESET REQUIREMENTS AC CHARACTERISTICS Param Symbol No. Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended Characteristic Min Typ Max Units 2 -- -- s Conditions SY10 TMCL MCLR Pulse Width (Low) SY12 TPOR Power-on Reset Delay -- 2 -- s SY13 TIOZ I/O High-Impedance from MCLR Low or Watchdog Timer Reset Lesser of: (3 TCY + 2) or 700 -- (3 TCY + 2) s SY25 TBOR Brown-out Reset Pulse Width 1 -- -- s SY45 TRST Internal State Reset Time -- 50 -- s SY70 TDSWU Deep Sleep Wake-up Time -- 200 -- s VCAP fully discharged before wake-up SY71 TPM Program Memory Wake-up Time -- 20 -- s Sleep wake-up with VREGS = 0 -- 1 -- s Sleep wake-up with VREGS = 1 -- 90 -- s Sleep wake-up with VREGS = 0 -- 70 -- s Sleep wake-up with VREGS = 1 SY72 TLVR Low-Voltage Regulator Wake-up Time 2013-2015 Microchip Technology Inc. VDD VBOR DS30005009C-page 431 PIC24FJ128GB204 FAMILY FIGURE 33-5: TIMER1, 2, 3, 4 AND 5 EXTERNAL CLOCK TIMING CHARACTERISTICS TxCK Tx10 Tx11 Tx15 Tx20 OS60 TMRx Note: Refer to Figure 33-2 for load conditions. TABLE 33-26: TIMER1 EXTERNAL CLOCK TIMING REQUIREMENTS(1) Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended AC CHARACTERISTICS Param No. TA10 TA11 TA15 Symbol TTXH TTXL TTXP Characteristic T1CK High Time T1CK Low Time T1CK Input Period Min Typ Max Units Synchronous, No Prescaler 0.5 TCY + 20 -- -- ns Synchronous, with Prescaler 10 -- -- ns Asynchronous 10 -- -- ns Synchronous, No Prescaler 0.5 TCY + 20 -- -- ns Synchronous, with Prescaler 10 -- -- ns Asynchronous 10 -- -- ns Synchronous, No Prescaler TCY + 40 -- -- ns Synchronous, with Prescaler Greater of: 20 ns or (TCY + 40)/N -- -- -- Asynchronous OS60 FT1 TA20 TCKEXTMRL Delay from External T1CK Clock Edge to Timer Increment Note 1: SOSC1/T1CK Oscillator Input Frequency Range (oscillator enabled by setting bit, TCS (T1CON<1>)) 20 -- -- ns DC -- 50 kHz 0.5 TCY -- 1.5 TCY -- Conditions Must also meet Parameter TA15 Must also meet Parameter TA15 N = Prescale Value (1, 8, 64, 256) Timer1 is a Type A. DS30005009C-page 432 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY TABLE 33-27: TIMER2 AND TIMER4 EXTERNAL CLOCK TIMING REQUIREMENTS Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended AC CHARACTERISTICS Param No. TB10 TB11 TB15 TB20 Symbol TTXH TTXL TTXP Characteristic Min Typ Max Units TxCK High Time Synchronous, No Prescaler 0.5 TCY + 20 -- -- ns Synchronous, with Prescaler 10 -- -- ns Synchronous, No Prescaler 0.5 TCY + 20 -- -- ns Synchronous, with Prescaler 10 -- -- ns Synchronous, No Prescaler TCY + 40 -- -- ns Synchronous, with Prescaler Greater of: 20 ns or (TCY + 40)/N -- 1.5 TCY -- TxCK Low Time TxCK Input Period TCKEXTMRL Delay from External TxCK Clock Edge to Timer Increment 0.5 TCY Conditions Must also meet Parameter TB15 Must also meet Parameter TB15 N = Prescale Value (1, 8, 64, 256) TABLE 33-28: TIMER3 AND TIMER5 EXTERNAL CLOCK TIMING REQUIREMENTS Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended AC CHARACTERISTICS Param No. Symbol Characteristic Min Typ Max Units Conditions TC10 TTXH TxCK High Time Synchronous 0.5 TCY + 20 -- -- ns Must also meet Parameter TC15 TC11 TTXL TxCK Low Time Synchronous 0.5 TCY + 20 -- -- ns Must also meet Parameter TC15 TC15 TTXP TxCK Input Period Synchronous, No Prescaler TCY + 40 -- -- ns N = Prescale Value (1, 8, 64, 256) Synchronous, with Prescaler Greater of: 20 ns or (TCY + 40)/N -- 1.5 TCY -- TC20 TCKEXTMRL Delay from External TxCK Clock Edge to Timer Increment 2013-2015 Microchip Technology Inc. 0.5 TCY DS30005009C-page 433 PIC24FJ128GB204 FAMILY FIGURE 33-6: INPUT CAPTURE x (ICx) TIMING CHARACTERISTICS ICx IC10 IC11 IC15 Note: Refer to Figure 33-2 for load conditions. TABLE 33-29: INPUT CAPTURE x TIMING REQUIREMENTS Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended AC CHARACTERISTICS Param No. Symbol IC10 TccL ICx Input Low Time No Prescaler IC11 TccH ICx Input High Time IC15 TccP ICx Input Period Characteristic(1) With Prescaler Note 1: No Prescaler With Prescaler Min Max Units 0.5 TCY + 20 -- ns 10 -- ns 0.5 TCY + 20 -- ns 10 -- ns (TCY + 40)/N -- ns Conditions N = Prescale Value (1, 4, 16) These parameters are characterized but not tested in manufacturing. FIGURE 33-7: OUTPUT COMPARE x MODULE (OCx) TIMING CHARACTERISTICS OCx (Output Compare or PWM Mode) OC11 OC10 Note: Refer to Figure 33-2 for load conditions. TABLE 33-30: OUTPUT COMPARE x MODULE TIMING REQUIREMENTS AC CHARACTERISTICS Param Symbol No. Characteristic(1) Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended Min Typ Max Units Conditions OC10 TccF OCx Output Fall Time -- -- -- ns See Parameter DO32 OC11 TccR OCx Output Rise Time -- -- -- ns See Parameter DO31 Note 1: These parameters are characterized but not tested in manufacturing. DS30005009C-page 434 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY FIGURE 33-8: OCx/PWM MODULE TIMING CHARACTERISTICS OC20 OCFA/OCFB OC15 OCx TABLE 33-31: SIMPLE OCx/PWM MODE TIMING REQUIREMENTS Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended AC CHARACTERISTICS Param No. Symbol Characteristic(1) Min Typ Max Units OC15 TFD Fault Input to PWM I/O Change -- -- 50 ns OC20 TFLT Fault Input Pulse Width 50 -- -- ns Note 1: These parameters are characterized but not tested in manufacturing. 2013-2015 Microchip Technology Inc. Conditions DS30005009C-page 435 PIC24FJ128GB204 FAMILY FIGURE 33-9: SPIx MODULE MASTER MODE (CKE = 0) TIMING CHARACTERISTICS SCKx (CKP = 0) SP11 SP10 SP21 SP20 SP20 SP21 SCKx (CKP = 1) SP35 SDOx MSb Bit 14 - - - - - -1 SP31 SDIx MSb In LSb SP30 Bit 14 - - - -1 LSb In SP40 SP41 Note: Refer to Figure 33-2 for load conditions. TABLE 33-32: SPIx MASTER MODE (CKE = 0) TIMING REQUIREMENTS Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended AC CHARACTERISTICS Param No. Symbol Characteristic(1) Min Typ(2) Max Units Conditions SP10 TscL SCKx Output Low Time TCY/2 -- -- ns (Note 3) SP11 TscH SCKx Output High Time TCY/2 -- -- ns (Note 3) SP20 TscF SCKx Output Fall Time -- -- -- ns See Parameter DO32 (Note 4) SP21 TscR SCKx Output Rise Time -- -- -- ns See Parameter DO31 (Note 4) SP30 TdoF SDOx Data Output Fall Time -- -- -- ns See Parameter DO32 (Note 4) SP31 TdoR SDOx Data Output Rise Time -- -- -- ns See Parameter DO31 (Note 4) SP35 TscH2doV, TscL2doV SDOx Data Output Valid After SCKx Edge -- 6 20 ns SP40 TdiV2scH, TdiV2scL Setup Time of SDIx Data Input to SCKx Edge 23 -- -- ns SP41 TscH2diL, TscL2diL Hold Time of SDIx Data Input to SCKx Edge 30 -- -- ns Note 1: 2: 3: 4: These parameters are characterized but not tested in manufacturing. Data in "Typ" column is at 3.3V, +25C unless otherwise stated. The minimum clock period for SCKx is 100 ns. Therefore, the clock generated in Master mode must not violate this specification. Assumes 50 pF load on all SPIx pins. DS30005009C-page 436 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY FIGURE 33-10: SPIx MODULE MASTER MODE (CKE = 1) TIMING CHARACTERISTICS SP36 SCKx (CKP = 0) SP11 SP21 SP10 SCKx (CKP = 1) SP20 SP35 SP20 SDOx MSb SP40 SDIx Bit 14 - - - - - -1 SP21 LSb SP30, SP31 MSb In Bit 14 - - - -1 LSb In SP41 Note: Refer to Figure 33-2 for load conditions. TABLE 33-33: SPIx MODULE MASTER MODE (CKE = 1) TIMING REQUIREMENTS Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended AC CHARACTERISTICS Param No. Symbol Characteristic(1) Min Typ(2) Max Units -- -- ns Conditions TscL SCKx Output Low Time(3) TCY/2 SP11 TscH SCKx Output High Time(3) TCY/2 -- -- ns SP20 TscF SCKx Output Fall Time(4) -- -- -- ns See Parameter DO32 SP10 (4) SP21 TscR SCKx Output Rise Time -- -- -- ns See Parameter DO31 SP30 TdoF SDOx Data Output Fall Time(4) -- -- -- ns See Parameter DO32 SP31 TdoR SDOx Data Output Rise Time(4) -- -- -- ns See Parameter DO31 SP35 TscH2doV, SDOx Data Output Valid After TscL2doV SCKx Edge -- 6 20 ns SP36 TdoV2sc, SDOx Data Output Setup to TdoV2scL First SCKx Edge 30 -- -- ns SP40 TdiV2scH, Setup Time of SDIx Data TdiV2scL Input to SCKx Edge 23 -- -- ns SP41 TscH2diL, TscL2diL 30 -- -- ns Note 1: 2: 3: 4: Hold Time of SDIx Data Input to SCKx Edge These parameters are characterized but not tested in manufacturing. Data in "Typ" column is at 3.3V, +25C unless otherwise stated. The minimum clock period for SCKx is 100 ns. Therefore, the clock generated in Master mode must not violate this specification. Assumes 50 pF load on all SPIx pins. 2013-2015 Microchip Technology Inc. DS30005009C-page 437 PIC24FJ128GB204 FAMILY FIGURE 33-11: SPIx MODULE SLAVE MODE (CKE = 0) TIMING CHARACTERISTICS SSx SP52 SP50 SCKx (CKP = 0) SP71 SP70 SP73 SP72 SP72 SP73 SCKx (CKP = 1) SP35 SDOx MSb Bit 14 - - - - - -1 LSb SP51 SP30, SP31 SDIx MSb In Bit 14 - - - -1 LSb In SP41 SP40 Note: Refer to Figure 33-2 for load conditions. TABLE 33-34: SPIx MODULE SLAVE MODE (CKE = 0) TIMING REQUIREMENTS Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended AC CHARACTERISTICS Param No. Characteristic(1) Symbol Min Typ(2) Max Units SP70 TscL SCKx Input Low Time 30 -- -- ns SP71 SP72 TscH TscF SCKx Input High Time SCKx Input Fall Time(3) 30 -- -- 10 -- 25 ns ns SP73 SP30 TscR TdoF SCKx Input Rise Time(3) SDOx Data Output Fall Time(3) -- -- 10 -- 25 -- ns ns SP31 SP35 TdoR SDOx Data Output Rise Time(3) TscH2doV, SDOx Data Output Valid After TscL2doV SCKx Edge -- -- -- -- -- 30 ns ns SP40 TdiV2scH, Setup Time of SDIx Data Input TdiV2scL to SCKx Edge 20 -- -- ns SP41 TscH2diL, Hold Time of SDIx Data Input TscL2diL to SCKx Edge 20 -- -- ns SP50 TssL2scH, SSx to SCKx or SCKx Input TssL2scL 120 -- -- ns SP51 TssH2doZ SSx to SDOx Output High-Impedance(3) 10 -- 50 ns SP52 TscH2ssH, SSx After SCKx Edge TscL2ssH 1.5 TCY + 40 -- -- ns Note 1: 2: 3: Conditions See Parameter DO32 See Parameter DO31 These parameters are characterized but not tested in manufacturing. Data in "Typ" column is at 3.3V, +25C unless otherwise stated. Assumes 50 pF load on all SPIx pins. DS30005009C-page 438 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY FIGURE 33-12: SSx SPIx MODULE SLAVE MODE (CKE = 1) TIMING CHARACTERISTICS SP60 SP52 SP50 SCKx (CKP = 0) SP71 SP70 SP73 SP72 SP72 SP73 SCKx (CKP = 1) SP35 SP52 MSb SDOx Bit 14 - - - - - -1 LSb SP30, SP31 SDIx MSb In Bit 14 - - - -1 SP51 LSb In SP41 SP40 Note: Refer to Figure 33-2 for load conditions. 2013-2015 Microchip Technology Inc. DS30005009C-page 439 PIC24FJ128GB204 FAMILY TABLE 33-35: SPIx MODULE SLAVE MODE (CKE = 1) TIMING REQUIREMENTS Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended AC CHARACTERISTICS Param No. Characteristic(1) Symbol Min Typ(2) Max Units SP70 TscL SCKx Input Low Time 30 -- -- ns SP71 TscH SCKx Input High Time 30 -- -- ns SP72 TscF SCKx Input Fall Time(3) -- 10 25 ns SP73 TscR SCKx Input Rise Time(3) -- 10 25 ns (3) Conditions SP30 TdoF SDOx Data Output Fall Time -- -- -- ns See Parameter DO32 SP31 TdoR SDOx Data Output Rise Time(3) -- -- -- ns See Parameter DO31 SP35 TscH2doV, SDOx Data Output Valid After TscL2doV SCKx Edge -- -- 30 ns SP40 TdiV2scH, Setup Time of SDIx Data Input TdiV2scL to SCKx Edge 20 -- -- ns SP41 TscH2diL, Hold Time of SDIx Data Input TscL2diL to SCKx Edge 20 -- -- ns SP50 TssL2scH, SSx to SCKx or SCKx TssL2scL Input 120 -- -- ns SP51 TssH2doZ SSx to SDOX Output High-Impedance(4) 10 -- 50 ns SP52 TscH2ssH SSx After SCKx Edge TscL2ssH 1.5 TCY + 40 -- -- ns SP60 TssL2doV SDOx Data Output Valid After SSx Edge -- -- 50 ns Note 1: 2: 3: 4: These parameters are characterized but not tested in manufacturing. Data in "Typ" column is at 3.3V, +25C unless otherwise stated. The minimum clock period for SCKx is 100 ns. Therefore, the clock generated in Master mode must not violate this specification. Assumes 50 pF load on all SPIx pins. DS30005009C-page 440 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY FIGURE 33-13: I2CTM BUS START/STOP BITS TIMING CHARACTERISTICS (MASTER MODE) SCLx IM31 IM34 IM30 IM33 SDAx Start Condition Note: Stop Condition Refer to Figure 33-2 for load conditions. TABLE 33-36: I2CTM BUS START/STOP BIT TIMING REQUIREMENTS (MASTER MODE) Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended AC CHARACTERISTICS Param Symbol No. IM30 TSU:STA Start Condition Setup Time THD:STA Start Condition Hold Time IM31 TSU:STO Stop Condition Setup Time IM33 THD:STO Stop Condition Hold Time IM34 Note 1: 2: Min(1) Max Units 100 kHz mode TCY (BRG + 1) -- s 400 kHz mode TCY (BRG + 1) -- s 1 MHz mode(2) TCY (BRG + 1) -- s 100 kHz mode TCY (BRG + 1) -- s 400 kHz mode TCY (BRG + 1) -- s 1 MHz mode(2) TCY (BRG + 1) -- s 100 kHz mode TCY (BRG + 1) -- s 400 kHz mode TCY (BRG + 1) -- s 1 MHz mode(2) TCY (BRG + 1) -- s 100 kHz mode TCY (BRG + 1) -- ns 400 kHz mode TCY (BRG + 1) -- ns 1 MHz mode(2) TCY (BRG + 1) -- ns Characteristic Conditions Only relevant for Repeated Start condition After this period, the first clock pulse is generated 2 BRG is the value of the I C Baud Rate Generator. Refer to Section 17.2 "Setting Baud Rate When Operating as a Bus Master" for details. Maximum Pin Capacitance = 10 pF for all I2C pins (for 1 MHz mode only). 2013-2015 Microchip Technology Inc. DS30005009C-page 441 PIC24FJ128GB204 FAMILY I2CTM BUS DATA TIMING CHARACTERISTICS (MASTER MODE) FIGURE 33-14: IM11 IM21 SCLx IM10 IM20 IM26 IM25 SDAx In IM45 IM40 SDAx Out Note: Refer to Figure 33-2 for load conditions. TABLE 33-37: I2CTM BUS DATA TIMING REQUIREMENTS (MASTER MODE) Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended AC CHARACTERISTICS Param No. IM10 IM11 IM20 IM21 IM25 IM26 IM40 IM45 Characteristic Min(1) Max Units Clock Low Time 100 kHz mode 400 kHz mode TCY (BRG + 1) TCY (BRG + 1) -- -- s s 1 MHz mode(2) Clock High Time 100 kHz mode TCY (BRG + 1) TCY (BRG + 1) -- -- s s 400 kHz mode 1 MHz mode(2) TCY (BRG + 1) TCY (BRG + 1) -- -- s s SDAx and SCLx 100 kHz mode Fall Time 400 kHz mode -- 20 + 0.1 CB 300 300 ns ns 1 MHz mode(2) SDAx and SCLx 100 kHz mode Rise Time 400 kHz mode -- -- 100 1000 ns ns 1 MHz mode(2) 20 + 0.1 CB -- 300 300 ns ns 100 kHz mode 400 kHz mode 250 100 -- -- ns ns 1 MHz mode(2) 100 kHz mode 40 0 -- -- ns ns 400 kHz mode 1 MHz mode(2) 0 0.2 0.9 -- s ns Output Valid From Clock 100 kHz mode 400 kHz mode -- -- 3500 1000 ns ns Bus Free Time 1 MHz mode(2) 100 kHz mode -- 4.7 400 -- ns s 400 kHz mode 1 MHz mode(2) 1.3 0.5 -- -- s s Symbol TLO:SCL THI:SCL TF:SCL TR:SCL TSU:DAT THD:DAT TAA:SCL TBF:SDA Data Input Setup Time Data Input Hold Time Conditions CB is specified to be from 10 to 400 pF CB is specified to be from 10 to 400 pF Time the bus must be free before a new transmission can start Bus Capacitive Loading -- 400 pF IM50 CB Note 1: BRG is the value of the I2C Baud Rate Generator. Refer to Section 17.2 "Setting Baud Rate When Operating as a Bus Master" for details. 2: Maximum Pin Capacitance = 10 pF for all I2C pins (for 1 MHz mode only). DS30005009C-page 442 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY I2CTM BUS START/STOP BITS TIMING CHARACTERISTICS (SLAVE MODE) FIGURE 33-15: SCLx IS34 IS31 IS30 IS33 SDAx Start Condition Stop Condition TABLE 33-38: I2CTM BUS START/STOP BITS TIMING REQUIREMENTS (SLAVE MODE) Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended AC CHARACTERISTICS Param Symbol No. IS30 IS31 IS33 IS34 Note 1: TSU:STA Characteristic Start Condition Setup Time THD:STA Start Condition Hold Time TSU:STO Stop Condition Setup Time THD:STO Stop Condition Hold Time Min Max Units 100 kHz mode 4.7 -- s 400 kHz mode 0.6 -- s 1 MHz mode(1) 0.25 -- s 100 kHz mode 4.0 -- s 400 kHz mode 0.6 -- s 1 MHz mode(1) 0.25 -- s 100 kHz mode 4.7 -- s 400 kHz mode 0.6 -- s 1 MHz mode(1) 0.6 -- s 100 kHz mode 4000 -- ns 400 kHz mode 600 -- ns 1 MHz mode(1) 250 -- ns Conditions Only relevant for Repeated Start condition After this period, the first clock pulse is generated 2 Maximum Pin Capacitance = 10 pF for all I C pins (for 1 MHz mode only). 2013-2015 Microchip Technology Inc. DS30005009C-page 443 PIC24FJ128GB204 FAMILY I2CTM BUS DATA TIMING CHARACTERISTICS (SLAVE MODE) FIGURE 33-16: IS11 IS21 IS10 SCLx IS25 IS20 IS26 SDAx In IS45 IS40 SDAx Out TABLE 33-39: I2CTM BUS DATA TIMING REQUIREMENTS (SLAVE MODE) Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended AC CHARACTERISTICS Param Symbol No. IS10 IS11 IS20 IS21 IS25 Characteristic TLO:SCL Clock Low Time THI:SCL TF:SCL TR:SCL Clock High Time SDAx and SCLx Fall Time SDAx and SCLx Rise Time TSU:DAT Data Input Setup Time Min Max Units 100 kHz mode 4.7 -- s Device must operate at a minimum of 1.5 MHz 400 kHz mode 1.3 -- s Device must operate at a minimum of 10 MHz 1 MHz mode(1) 0.5 -- s 100 kHz mode 4.0 -- s Device must operate at a minimum of 1.5 MHz 400 kHz mode 0.6 -- s Device must operate at a minimum of 10 MHz 1 MHz mode(1) 0.5 -- s 100 kHz mode -- 300 ns 400 kHz mode 20 + 0.1 CB 300 ns 1 MHz mode(1) -- 100 ns 100 kHz mode -- 1000 ns 400 kHz mode 20 + 0.1 CB 300 ns 1 MHz mode(1) -- 300 ns 100 kHz mode 250 -- ns 400 kHz mode 100 -- ns mode(1) 1 MHz IS26 IS40 100 -- ns 100 kHz mode 0 -- ns 400 kHz mode 0 0.9 s 1 MHz mode(1) 0 0.3 s Output Valid From 100 kHz mode Clock 400 kHz mode 0 3500 ns 0 1000 ns THD:DAT Data Input Hold Time TAA:SCL 1 MHz IS45 IS50 Note 1: TBF:SDA Bus Free Time CB mode(1) 0 350 ns 100 kHz mode 4.7 -- s 400 kHz mode 1.3 -- s 1 MHz mode(1) 0.5 -- s -- 400 pF Bus Capacitive Loading Conditions CB is specified to be from 10 to 400 pF CB is specified to be from 10 to 400 pF Time the bus must be free before a new transmission can start Maximum Pin Capacitance = 10 pF for all I2C pins (for 1 MHz mode only). DS30005009C-page 444 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY TABLE 33-40: A/D MODULE SPECIFICATIONS Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended AC CHARACTERISTICS Param No. Symbol Characteristic Min. Typ Max. Units Conditions Device Supply AD01 AVDD Module VDD Supply Greater of: VDD - 0.3 or 2.2 -- Lesser of: VDD + 0.3 or 3.6 V AD02 AVSS Module VSS Supply VSS - 0.3 -- VSS + 0.3 V AD05 VREFH Reference Voltage High AVSS + 1.7 AVDD V AD06 VREFL Reference Voltage Low AD07 VREF Absolute Reference Voltage Reference Inputs -- AVSS -- AVDD - 1.7 V AVSS - 0.3 -- AVDD + 0.3 V -- VREFH V Analog Input AD10 VINH-VINL Full-Scale Input Span AD11 VIN Absolute Input Voltage AVSS - 0.3 -- AVDD + 0.3 V AD12 VINL Absolute VINL Input Voltage AVSS - 0.3 -- AVDD/3 V Leakage Current -- 1.0 610 nA VINL = AVSS = VREFL = 0V, AVDD = VREFH = 3V, Source Impedance = 2.5 k Recommended Impedance of Analog Voltage Source -- -- 2.5K 10-bit AD13 AD17 RIN VREFL (Note 2) A/D Accuracy AD20B Nr Resolution -- 12 -- bits AD21B INL Integral Nonlinearity -- 1 <2 LSb VINL = AVSS = VREFL = 0V, AVDD = VREFH = 3V AD22B DNL Differential Nonlinearity -- -- <1 LSb VINL = AVSS = VREFL = 0V, AVDD = VREFH = 3V AD23B GERR Gain Error -- 1 3 LSb VINL = AVSS = VREFL = 0V, AVDD = VREFH = 3V AD24B EOFF Offset Error -- 1 2 LSb VINL = AVSS = VREFL = 0V, AVDD = VREFH = 3V AD25B Monotonicity(1) -- -- -- -- Note 1: 2: Guaranteed The A/D conversion result never decreases with an increase in the input voltage and has no missing codes. Measurements are taken with the external VREF+ and VREF- used as the A/D voltage reference. 2013-2015 Microchip Technology Inc. DS30005009C-page 445 PIC24FJ128GB204 FAMILY TABLE 33-41: A/D CONVERSION TIMING REQUIREMENTS(1) Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended AC CHARACTERISTICS Param No. Symbol Characteristic Min. Typ Max. Units Conditions TCY = 75 ns, AD1CON3 in default state Clock Parameters AD50 TAD A/D Clock Period AD51 tRC A/D Internal RC Oscillator Period 75 -- -- ns -- 250 -- ns Conversion Rate AD55 tCONV Conversion Time -- 14 -- TAD AD56 FCNV Throughput Rate -- -- 200 ksps AD57 tSAMP Sample Time -- 1 -- TAD -- 3 TAD AVDD > 2.7V Clock Parameters AD61 Note 1: tPSS Sample Start Delay from Setting Sample bit (SAMP) 2 Because the sample caps will eventually lose charge, clock rates below 10 kHz can affect linearity performance, especially at elevated temperatures. DS30005009C-page 446 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 34.0 PACKAGING INFORMATION 34.1 Package Marking Information 28-Lead QFN-S Example PIC24FJ 128GB202 1510017 XXXXXXXX XXXXXXXX YYWWNNN 28-Lead SOIC (.300") Example XXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXX YYWWNNN 28-Lead SPDIP PIC24FJ128GB202 1510017 Example PIC24FJ128GB202 XXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXX YYWWNNN 28-Lead SSOP XXXXXXXXXXXX XXXXXXXXXXXX YYWWNNN Legend: XX...X Y YY WW NNN Note: 1510017 Example PIC24FJ128 GB202 1510017 Customer-specific information Year code (last digit of calendar year) Year code (last 2 digits of calendar year) Week code (week of January 1 is week `01') Alphanumeric traceability code In the event the full Microchip part number cannot be marked on one line, it will be carried over to the next line, thus limiting the number of available characters for customer-specific information. 2013-2015 Microchip Technology Inc. DS30005009C-page 447 PIC24FJ128GB204 FAMILY 34.1 Package Marking Information (Continued) 44-Lead QFN XXXXXXXXXX XXXXXXXXXX XXXXXXXXXX YYWWNNN 44-Lead TQFP XXXXXXXXXX XXXXXXXXXX XXXXXXXXXX YYWWNNN DS30005009C-page 448 Example PIC24FJ128 GB204 1510017 Example PIC24FJ128 GB204 1510017 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 34.2 Package Details The following sections give the technical details of the packages. 2013-2015 Microchip Technology Inc. DS30005009C-page 449 PIC24FJ128GB204 FAMILY DS30005009C-page 450 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY /HDG3ODVWLF4XDG)ODW1R/HDG3DFNDJH 00 [[PP%RG\>4)16@ ZLWKPP&RQWDFW/HQJWK 1RWH )RUWKHPRVWFXUUHQWSDFNDJHGUDZLQJVSOHDVHVHHWKH0LFURFKLS3DFNDJLQJ6SHFLILFDWLRQORFDWHGDW KWWSZZZPLFURFKLSFRPSDFNDJLQJ 2013-2015 Microchip Technology Inc. DS30005009C-page 451 PIC24FJ128GB204 FAMILY Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging DS30005009C-page 452 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging 2013-2015 Microchip Technology Inc. DS30005009C-page 453 PIC24FJ128GB204 FAMILY Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging DS30005009C-page 454 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY /HDG3ODVWLF6KULQN6PDOO2XWOLQH 66 PP%RG\>6623@ 1RWH )RUWKHPRVWFXUUHQWSDFNDJHGUDZLQJVSOHDVHVHHWKH0LFURFKLS3DFNDJLQJ6SHFLILFDWLRQORFDWHGDW KWWSZZZPLFURFKLSFRPSDFNDJLQJ D N E E1 1 2 NOTE 1 b e c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icrochip Technology Inc. DS30005009C-page 455 PIC24FJ128GB204 FAMILY Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging DS30005009C-page 456 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY /HDG6NLQQ\3ODVWLF'XDO,Q/LQH 63 PLO%RG\>63',3@ 1RWH )RUWKHPRVWFXUUHQWSDFNDJHGUDZLQJVSOHDVHVHHWKH0LFURFKLS3DFNDJLQJ6SHFLILFDWLRQORFDWHGDW KWWSZZZPLFURFKLSFRPSDFNDJLQJ N NOTE 1 E1 1 2 3 D E A2 A L c b1 A1 b e e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icrochip Technology Inc. DS30005009C-page 457 PIC24FJ128GB204 FAMILY DS30005009C-page 458 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 2013-2015 Microchip Technology Inc. DS30005009C-page 459 PIC24FJ128GB204 FAMILY DS30005009C-page 460 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY 44-Lead Plastic Thin Quad Flatpack (PT) - 10x10x1.0 mm Body [TQFP] Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging D A D1 NOTE 2 B (DATUM A) (DATUM B) E1 A NOTE 1 2X 0.20 H A B E A N 2X 1 2 3 0.20 H A B TOP VIEW 4X 11 TIPS 0.20 C A B A A2 C SEATING PLANE 0.10 C SIDE VIEW A1 1 2 3 N NOTE 1 44 X b 0.20 e C A B BOTTOM VIEW Microchip Technology Drawing C04-076C Sheet 1 of 2 2013-2015 Microchip Technology Inc. DS30005009C-page 461 PIC24FJ128GB204 FAMILY 44-Lead Plastic Thin Quad Flatpack (PT) - 10x10x1.0 mm Body [TQFP] Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging H c L (L1) SECTION A-A Notes: Units Dimension Limits N Number of Leads e Lead Pitch A Overall Height Standoff A1 A2 Molded Package Thickness E Overall Width Molded Package Width E1 D Overall Length D1 Molded Package Length b Lead Width c Lead Thickness Lead Length L Footprint L1 Foot Angle MIN 0.05 0.95 0.30 0.09 0.45 0 MILLIMETERS NOM 44 0.80 BSC 1.00 12.00 BSC 10.00 BSC 12.00 BSC 10.00 BSC 0.37 0.60 1.00 REF 3.5 MAX 1.20 0.15 1.05 0.45 0.20 0.75 7 1. Pin 1 visual index feature may vary, but must be located within the hatched area. 2. Exact shape of each corner is optional. 3. Dimensioning and tolerancing per ASME Y14.5M BSC: Basic Dimension. Theoretically exact value shown without tolerances. REF: Reference Dimension, usually without tolerance, for information purposes only. Microchip Technology Drawing C04-076C Sheet 2 of 2 DS30005009C-page 462 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging 2013-2015 Microchip Technology Inc. DS30005009C-page 463 PIC24FJ128GB204 FAMILY NOTES: DS30005009C-page 464 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY APPENDIX A: REVISION HISTORY Revision A (May 2013) Original data sheet for the PIC24FJ128GB204 family of devices. Revision B (May 2014) This revision incorporates the following updates: * Sections: - Inserted new bulleted list in "Cryptographic Engine" - Updated a unit in "Analog Features" - Updated note in Section 16.0 "Serial Peripheral Interface (SPI)", Section 17.0 "Inter-Integrated CircuitTM (I2CTM)", Section 18.0 "Universal Asynchronous Receiver Transmitter (UART)", Section 23.0 "Cryptographic Engine" and Section 27.0 "Comparator Voltage Reference" - Updated Section 17.3 "Slave Address Masking" - Updated Section 23.0 "Cryptographic Engine" - Inserted new Section 23.5.6 "Generating a Random Number" - Updated Section 30.3.1 "Windowed Operation" - Updated packaging information in Section 34.0 "Packaging Information" * Registers: - Updated Register 8-45, Register 16-1, Register 16-4, Register 17-1, Register 18-1, Register 20-1, Register 23-1 and Register 23-5 - Updated the title of Register 18-2 and Register 18-4 - Updated bit 10 register description in Register 23-5 * Tables: - Updated Table 1-3, Table 4-5, Table 4-9, Table 4-10, Table 4-11, Table 4-12, Table 4-13, Table 4-14, Table 4-29, Table 33-1, Table 33-3, Table 33-4, Table 33-5, Table 33-6, Table 33-7, Table 33-8, Table 33-10, Table 33-12, Table 33-13, Table 33-14, Table 33-15, Table 33-16, Table 33-21 - Added Table 33-26 through Table 33-39 * Figures: - Added Figure 9-1, Figure 33-5, Figure 33-6, Figure 33-7, Figure 33-8, Figure 33-9, Figure 33-10, Figure 33-11 and Figure 33-12. * Examples: - Example 22-1 2013-2015 Microchip Technology Inc. Revision C (March 2015) This revision incorporates the following updates: * Registers: - Register 26-1 * Tables: - Table 33-4, Table 33-5, Table 33-6 and Table 33-21 * Package marking examples and package diagrams in Section 34.0 "Packaging Information" were updated DS30005009C-page 465 PIC24FJ128GB204 FAMILY NOTES: DS30005009C-page 466 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY INDEX A A/D Control Registers ...................................................... 354 Extended DMA Operations ....................................... 353 Operation .................................................................. 351 Transfer Functions 10-Bit ................................................................ 370 12-Bit ................................................................ 369 AC Characteristics A/D Conversion Timing Requirements...................... 446 A/D Specifications..................................................... 445 and Timing Parameters............................................. 427 Capacitive Loading on Output Pins........................... 427 CLKO and I/O Timing Requirements ........................ 430 External Clock Timing Requirements........................ 428 I2C Bus Data (Master Mode) Requirements ............. 442 I2C Bus Data (Slave Mode) Requirements ............... 444 I2C Bus Start/Stop Bit Timing Requirements (Master Mode) .................................................. 441 I2C Bus Start/Stop Bits (Slave Mode) Requirements ................................................... 443 Input Capture x Requirements .................................. 434 Internal RC Accuracy ................................................ 429 Load Conditions and Requirements for Specifications.................................................... 427 Output Compare x Requirements ............................. 434 PLL Clock Timing Specifications............................... 429 RC Oscillator Start-up Time ...................................... 430 Reset and Brown-out Reset Requirements .............. 431 Simple OCx/PWM Mode Requirements.................... 435 SPIx Master Mode (CKE = 0) Requirements ............ 436 SPIx Master Mode (CKE = 1) Requirements ............ 437 SPIx Slave Mode (CKE = 0) Requirements .............. 438 SPIx Slave Mode (CKE = 1) Requirements .............. 440 Timer1 External Clock Requirements ....................... 432 Timer2 and Timer4 External Clock Requirements ................................................... 433 Timer3 and Timer5 External Clock Requirements ................................................... 433 Alternate Interrupt Vector Table (AIVT) .............................. 91 Assembler MPASM Assembler................................................... 404 B Block Diagrams 10-Bit A/D Converter Analog Input Model................. 368 12-Bit A/D Converter................................................. 352 16-Bit Asynchronous Timer3 and Timer5 ................. 207 16-Bit Synchronous Timer2 and Timer4 ................... 207 16-Bit Timer1 Module................................................ 201 Accessing Program Space Using Table Instructions ............................................... 67 Addressing for Table Registers................................... 79 BDT Mapping for Endpoint Buffering Modes ............ 270 Buffer Address Generation in PIA Mode................... 355 CALL Stack Frame...................................................... 64 Comparator Voltage Reference Module ................... 377 CPU Programmer's Model .......................................... 31 CRC Module ............................................................. 345 CRC Shift Engine Detail............................................ 345 Cryptographic Engine ............................................... 329 2013-2015 Microchip Technology Inc. CTMU Connections and Internal Configuration for Capacitance Measurement ......................... 380 CTMU Connections and Internal Configuration for Pulse Delay Generation .............................. 381 CTMU Connections and Internal Configuration for Time Measurement ..................................... 381 Data Access from Program Space Address Generation............................................ 66 Data Signal Modulator .............................................. 299 Direct Memory Access (DMA) .................................... 71 EDS Address Generation for Read ............................ 62 EDS Address Generation for Write............................. 63 Extended Data Space (EDS)...................................... 61 High/Low-Voltage Detect (HLVD) Module ................ 387 I2C Module................................................................ 246 Individual Comparator Configurations, CREF = 0.......................................................... 372 Individual Comparator Configurations, CREF = 1, CVREFP = 0 ................................... 373 Individual Comparator Configurations, CREF = 1, CVREFP = 1 ................................... 373 Input Capture x ......................................................... 211 MCLR Pin Connections .............................................. 24 On-Chip Regulator Connections............................... 399 Oscillator Circuit Placement ....................................... 27 Output Compare x (16-Bit Mode) ............................. 218 Output Compare x (Double-Buffered, 16-Bit PWM Mode) ........................................... 220 PIC24F CPU Core ...................................................... 30 PIC24FJ128GB204 Family (General)......................... 14 PSV Operation Access (Lower Word) ........................ 69 PSV Operation Access (Upper Word) ........................ 69 Recommended Minimum Connections....................... 23 Reset System ............................................................. 85 RTCC Module........................................................... 315 Shared I/O Port Structure ......................................... 173 Smart Card Subsystem Connection ......................... 257 SPIx Master, Frame Master Connection .................. 242 SPIx Master, Frame Slave Connection .................... 243 SPIx Master/Slave Connection (Enhanced Buffer Modes)................................. 242 SPIx Master/Slave Connection (Standard Mode)............................................... 241 SPIx Module (Enhanced Mode)................................ 229 SPIx Module (Standard Mode) ................................. 228 SPIx Slave, Frame Master Connection .................... 243 SPIx Slave, Frame Slave Connection ...................... 243 System Clock............................................................ 147 Timer2/3 and Timer4/5 (32-Bit) ................................ 206 Triple Comparator Module........................................ 371 UARTx (Simplified) ................................................... 254 USB Host Interface Example.................................... 268 USB OTG Bus Power Only....................................... 267 USB OTG Dual Power Example............................... 267 USB OTG External Pull-up for Full-Speed Device Mode..................................................... 267 USB OTG Interface Example ................................... 268 USB OTG Interrupt Funnel ....................................... 274 USB OTG Module..................................................... 266 USB OTG Self-Power Only ...................................... 267 USB PLL................................................................... 155 Watchdog Timer (WDT)............................................ 400 DS30005009C-page 467 PIC24FJ128GB204 FAMILY C C Compilers MPLAB XC ................................................................ 404 Charge Time Measurement Unit. See CTMU. Code Examples Basic Clock Switching Sequence.............................. 154 Configuring UART1 Input/Output Functions ............. 182 EDS Read from Program Memory in Assembly.......... 68 EDS Read in Assembly............................................... 62 EDS Write in Assembly ............................................... 63 Erasing a Program Memory Block (Assembly) ........... 82 Erasing a Program Memory Block (C Language) ....... 83 Initiating a Programming Sequence ............................ 83 Loading the Write Buffers ........................................... 83 Port Read/Write in Assembly .................................... 177 Port Read/Write in C ................................................. 177 PWRSAV Instruction Syntax ..................................... 162 Repeat Sequence ..................................................... 164 Setting the RTCWREN Bit ........................................ 316 Single-Word Flash Programming ................................ 84 Single-Word Flash Programming (C Language) ......... 84 Code Protection ................................................................ 401 Code Segment Protection ......................................... 401 Configuration Options ....................................... 401 Configuration Register Protection ............................. 402 General Segment Protection..................................... 401 Comparator Voltage Reference ........................................ 377 Configuring................................................................ 377 Configuration Bits.............................................................. 389 Core Features ....................................................................... 9 CPU Arithmetic Logic Unit (ALU)......................................... 34 Control Registers ........................................................ 32 Core Registers ............................................................ 30 Programmer's Model................................................... 29 CRC Interrupt Operation .................................................... 347 Polynomials............................................................... 346 Setup Examples for 16/32-Bit Polynomials ............... 346 Typical Operation ...................................................... 347 User Interface ........................................................... 346 Cryptographic Engine.................................................. 10, 329 Control Registers ...................................................... 335 Data Register Spaces ............................................... 330 Decrypting Data ........................................................ 331 Enabling .................................................................... 330 Encrypting Data ........................................................ 331 Key Source Selection AES................................................................... 343 DES/3DES ........................................................ 342 Operation Modes ...................................................... 330 Idle .................................................................... 330 Sleep................................................................. 330 Programming CFGPAGE Configuration Bits ........................... 334 Keys .................................................................. 334 Verifying Keys ................................................... 334 Pseudorandom Number (PRN) Generation .............. 333 Random Number Generation .................................... 333 Session Keys Encrypting ......................................................... 332 Receiving .......................................................... 332 Testing Key Source Configuration ............................ 333 DS30005009C-page 468 CTMU Measuring Capacitance ............................................ 379 Measuring Time ........................................................ 381 Pulse Delay and Generation..................................... 381 Customer Change Notification Service............................. 473 Customer Notification Service .......................................... 473 Customer Support............................................................. 473 D Data Memory Address Space ........................................................... 37 Extended Data Space (EDS) ...................................... 61 Memory Map............................................................... 37 Near Data Space ........................................................ 38 SFR Space ................................................................. 38 Software Stack ........................................................... 64 Space Organization, Alignment .................................. 38 Data Signal Modulator (DSM)........................................... 299 Data Signal Modulator. See DSM. DC Characteristics Comparator Specifications........................................ 425 Comparator Voltage Reference Specifications......... 425 CTMU Current Source Specifications....................... 426 Current (BOR, WDT, DSBOR, DSWDT) ............... 421 High/Low-Voltage Detect .......................................... 424 I/O Pin Input Specifications....................................... 422 I/O Pin Output Specifications.................................... 423 Idle Current (IIDLE) .................................................... 419 Internal Voltage Regulator Specifications................. 424 Operating Current (IDD) ............................................ 418 Power-Down Current (IPD)........................................ 420 Program Memory ...................................................... 423 Temperature and Voltage Specifications.................. 417 Thermal Operating Conditions.................................. 416 Thermal Packaging................................................... 416 USB On-The-Go Specifications ................................ 426 VBAT Operating Voltage Specifications..................... 426 Development Support ....................................................... 403 Device Features 28-Pin Devices............................................................ 13 44-Pin Devices............................................................ 12 Device Programmer MPLAB PM3 ............................................................. 405 Direct Memory Access. See DMA. DMA Channel Trigger Sources............................................ 78 Control Registers ........................................................ 74 Peripheral Module Disable (PMD) .............................. 74 Summary of Operations.............................................. 72 Types of Data Transfers ............................................. 73 Typical Setup .............................................................. 74 DMA Controller ................................................................... 10 DSM E Electrical Characteristics Absolute Maximum Ratings ...................................... 415 V/F Graph (Industrial) ............................................... 416 Enhanced Parallel Master Port (EPMP) ........................... 303 Enhanced Parallel Master Port. See EPMP. EPMP Key Features ............................................................ 303 Memory Addressable in Different Modes.................. 303 Pin Descriptions........................................................ 305 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY Equations 16-Bit, 32-Bit CRC Polynomials ................................ 346 A/D Conversion Clock Period ................................... 368 Baud Rate Reload Calculation.................................. 247 Calculating the PWM Period ..................................... 220 Calculation for Maximum PWM Resolution............... 221 Estimating USB Transceiver Current Consumption........................................ 269 Fractional Divisor for ROTRIMx Bits ......................... 156 Relationship Between Device and SPIx Clock Speed ............................................. 243 UARTx Baud Rate with BRGH = 0 ........................... 255 UARTx Baud Rate with BRGH = 1 ........................... 255 Errata .................................................................................... 7 Extended Data Space (EDS) ............................................ 303 F Flash Configuration Word Locations ................................. 389 Flash Configuration Words ................................................. 36 Flash Program Memory ...................................................... 79 and Table Instructions................................................. 79 Control Registers ........................................................ 80 Enhanced ICSP Operation.......................................... 80 JTAG Operation .......................................................... 80 Programming Algorithm .............................................. 82 Programming Operations............................................ 80 RTSP Operation.......................................................... 80 Single-Word Programming.......................................... 84 G Getting Started with 16-Bit MCUs ....................................... 23 Analog/Digital Pins Configuration During ICSP Operations ................................................. 28 Connection Requirements .......................................... 23 External Oscillator Pins............................................... 27 ICSP Programming Pins ............................................. 26 Master Clear (MCLR) Pin............................................ 24 Power Supply Pins...................................................... 24 Unused I/Os ................................................................ 28 Voltage Regulator Pins ............................................... 25 H High/Low-Voltage Detect (HLVD) ..................................... 387 High/Low-Voltage Detect. See HLVD. Input Capture 32-Bit Cascaded Mode ............................................. 212 Operations ................................................................ 212 Synchronous and Trigger Modes ............................. 211 Input Capture with Dedicated Timers ............................... 211 Input Voltage Levels for Port or Pin Tolerated Description Input....................................................... 174 Instruction Set Overview................................................................... 409 Summary .................................................................. 407 Symbols Used in Opcode Descriptions .................... 408 Interfacing Program and Data Spaces................................ 65 Inter-Integrated Circuit. See I2C. Internet Address ............................................................... 473 Interrupt Vector Table (IVT) ................................................ 91 Interrupts Control and Status Registers...................................... 95 Implemented Vectors.................................................. 93 Reset Sequence ......................................................... 91 Setup and Service Procedures................................. 145 Trap Vectors ............................................................... 92 Vector Table ............................................................... 92 Peripheral Pin Select (PPS) Selectable Input Sources.......................................... 179 J JTAG Interface ................................................................. 402 K Key Features .................................................................... 389 L Low-Voltage/Retention Regulator............................. 163, 399 M Memory Organization ......................................................... 35 Microchip Internet Web Site.............................................. 473 MPLAB Assembler, Linker, Librarian................................ 404 MPLAB X Integrated Development Environment Software .............................................. 403 MPLINK Object Linker/MPLIB Object Librarian ................ 404 N Near Data Space ................................................................ 38 I O I/O Ports Analog Port Pins Configuration (ANSx) .................... 174 Analog/Digital Function of an I/O Pin ........................ 174 Input Change Notification (ICN) ................................ 177 Open-Drain Configuration ......................................... 174 Parallel (PIO) ............................................................ 173 Peripheral Pin Select ................................................ 178 Pull-ups and Pull-Downs........................................... 177 Write/Read Timing .................................................... 174 I2C Communicating as Master in Single Master Environment.......................................... 245 Reserved Addresses................................................. 247 Setting Baud Rate as Bus Master............................. 247 Slave Address Masking ............................................ 247 In-Circuit Debuggers MPLAB ICD 3............................................................ 405 PICkit 3 ..................................................................... 405 In-Circuit Emulator System MPLAB REAL ICE .................................................... 405 On-Chip Voltage Regulator............................................... 399 POR.......................................................................... 399 Standby Mode .......................................................... 399 On-The-Go. See OTG. Oscillator Clock Switching ........................................................ 153 Sequence ......................................................... 153 Configuration Bit Values for Clock Selection ............ 148 Control Registers...................................................... 149 FRC Self-Tuning....................................................... 154 Initial Configuration on POR ..................................... 148 Initial CPU Clocking Scheme.................................... 148 On-Chip PLL............................................................. 159 Reference Clock Output ........................................... 156 USB Operation ......................................................... 155 Special Considerations..................................... 156 2013-2015 Microchip Technology Inc. DS30005009C-page 469 PIC24FJ128GB204 FAMILY Output Compare 32-Bit Cascaded Mode ............................................. 217 Compare Mode Operations....................................... 218 Synchronous and Trigger Modes .............................. 217 Output Compare with Dedicated Timers ........................... 217 P Packaging ......................................................................... 447 Details ....................................................................... 449 Marking ..................................................................... 447 Peripheral Pin Select (PPS) .............................................. 178 Available Peripherals and Pins ................................. 178 Configuration Control ................................................ 181 Considerations for Use ............................................. 182 Control Registers ...................................................... 183 Input Mapping ........................................................... 179 Mapping Exceptions.................................................. 181 Output Mapping ........................................................ 180 Peripheral Priority ..................................................... 178 Selectable Output Sources ....................................... 180 Pinout Description ............................................................... 15 Power-Saving Features..................................................... 161 Clock Frequency, Clock Switching............................ 171 Doze Mode................................................................ 171 Instruction-Based Modes .......................................... 162 Deep Sleep ....................................................... 164 Idle .................................................................... 163 Sleep................................................................. 163 Overview of Modes ................................................... 161 VBAT Mode ................................................................ 166 Product Identification System............................................ 475 Program Memory Access Using Table Instructions ................................. 67 Address Space............................................................ 35 Addressing Program Space ........................................ 65 Flash Configuration Words ......................................... 36 Hard Memory Vectors ................................................. 36 Memory Maps ............................................................. 35 Organization................................................................ 36 Reading from Program Memory Using EDS ............... 68 Program Verification.......................................................... 401 Pulse-Width Modulation (PWM) Mode .............................. 219 Pulse-Width Modulation. See PWM. PWM Duty Cycle and Period .............................................. 220 R Real-Time Clock and Calendar (RTCC)............................ 315 Real-Time Clock and Calendar. See RTCC. Register Maps A/D Converter ............................................................. 51 Analog Configuration .................................................. 52 Comparators ............................................................... 56 CPU Core.................................................................... 39 CRC ............................................................................ 57 Cryptographic Engine ................................................. 59 CTMU.......................................................................... 52 Data Signal Modulator (DSM) ..................................... 56 Deep Sleep ................................................................. 59 DMA ............................................................................ 53 Enhanced Parallel Master/Slave Port ......................... 55 I2C ............................................................................... 46 ICN .............................................................................. 40 Input Capture .............................................................. 44 Interrupt Controller ...................................................... 41 NVM ............................................................................ 59 DS30005009C-page 470 Output Compare ......................................................... 45 Pad Configuration (PADCFG1)................................... 50 Peripheral Module Disable (PMD) .............................. 60 Peripheral Pin Select (PPS)........................................ 57 PORTA ....................................................................... 50 PORTB ....................................................................... 50 PORTC ....................................................................... 50 Real-Time Clock and Calendar (RTCC) ..................... 56 SPI1 ............................................................................ 48 SPI2 ............................................................................ 48 SPI3 ............................................................................ 49 System Control (Clock and Reset) ............................. 58 Timers......................................................................... 43 UART .......................................................................... 47 USB OTG ................................................................... 54 Registers AD1CHITL (ADC1 Scan Compare Hit, Low Word) ........................................................ 365 AD1CHS (ADC1 Sample Select) .............................. 363 AD1CON1 (ADC1 Control 1) .................................... 356 AD1CON2 (ADC1 Control 2) .................................... 358 AD1CON3 (ADC1 Control 3) .................................... 360 AD1CON4 (ADC1 Control 4) .................................... 361 AD1CON5 (ADC1 Control 5) .................................... 362 AD1CSSH (ADC1 Input Scan Select, High Word) ....................................................... 366 AD1CSSL (ADC1 Input Scan Select, Low Word) ........................................................ 366 AD1CTMENL (ADC1 CTMU Enable, Low Word) ........................................................ 367 ALCFGRPT (Alarm Configuration) ........................... 320 ALMINSEC (Alarm Minutes and Seconds Value) ................................................ 324 ALMTHDY (Alarm Month and Day Value) ................ 323 ALWDHR (Alarm Weekday and Hours Value).......... 323 ANCFG (A/D Band Gap Reference Configuration) ................................................... 364 ANSA (PORTA Analog Function Selection) ............. 175 ANSB (PORTB Analog Function Selection) ............. 175 ANSC (PORTC Analog Function Selection) ............. 176 BDnSTAT (Buffer Descriptor n Status Prototype, CPU Mode)....................................................... 273 BDnSTAT (Buffer Descriptor n Status Prototype, USB Mode) ....................................................... 272 CFGPAGE (Secure Array Configuration Bits) .......... 340 CLKDIV (Clock Divider) ............................................ 151 CMSTAT (Comparator Status) ................................. 375 CMxCON (Comparator x Control, Comparators 1-3) ............................................. 374 CORCON (CPU Core Control) ............................. 33, 97 CRCCON1 (CRC Control 1) ..................................... 348 CRCCON2 (CRC Control 2) ..................................... 349 CRCXORH (CRC XOR Polynomial, High Byte) ....... 350 CRCXORL (CRC XOR Polynomial, Low Byte)......... 350 CRYCONH (Cryptographic Control High)................. 337 CRYCONL (Cryptographic Control Low) .................. 335 CRYOTP (Cryptographic OTP Page Program Control) .............................................. 339 CRYSTAT (Cryptographic Status) ............................ 338 CTMUCON1 (CTMU Control 1) ................................ 382 CTMUCON2 (CTMU Control 2) ................................ 383 CTMUICON (CTMU Current Control) ....................... 385 CVRCON (Comparator Voltage Reference Control) ........................................... 378 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY CW1 (Flash Configuration Word 1)........................... 390 CW2 (Flash Configuration Word 2)........................... 392 CW3 (Flash Configuration Word 3)........................... 394 CW4 (Flash Configuration Word 4)........................... 396 DEVID (Device ID) .................................................... 398 DEVREV (Device Revision) ...................................... 398 DMACHn (DMA Channel n Control) ........................... 76 DMACON (DMA Engine Control)................................ 75 DMAINTn (DMA Channel n Interrupt) ......................... 77 DSCON (Deep Sleep Control) .................................. 168 DSWAKE (Deep Sleep Wake-up Source) ................ 169 HLVDCON (High/Low-Voltage Detect Control)......... 388 I2CxCONH (I2Cx Control High) ................................ 250 I2CxCONL (I2Cx Control Low).................................. 248 I2CxMSK (I2Cx Slave Mode Address Mask) ............ 252 I2CxSTAT (I2Cx Status) ........................................... 251 ICxCON1 (Input Capture x Control 1) ....................... 213 ICxCON2 (Input Capture x Control 2) ....................... 214 IEC0 (Interrupt Enable Control 0) ............................. 111 IEC1 (Interrupt Enable Control 1) ............................. 113 IEC2 (Interrupt Enable Control 2) ............................. 115 IEC3 (Interrupt Enable Control 3) ............................. 117 IEC4 (Interrupt Enable Control 4) ............................. 119 IEC5 (Interrupt Enable Control 5) ............................. 120 IEC6 (Interrupt Enable Control 6) ............................. 121 IEC7 (Interrupt Enable Control 7) ............................. 121 IFS0 (Interrupt Flag Status 0) ................................... 100 IFS1 (Interrupt Flag Status 1) ................................... 102 IFS2 (Interrupt Flag Status 2) ................................... 104 IFS3 (Interrupt Flag Status 3) ................................... 106 IFS4 (Interrupt Flag Status 4) ................................... 108 IFS5 (Interrupt Flag Status 5) ................................... 109 IFS6 (Interrupt Flag Status 6) ................................... 110 IFS7 (Interrupt Flag Status 7) ................................... 110 INTCON1 (Interrupt Control 1).................................... 98 INTCON2 (Interrupt Control 2).................................... 99 INTTREG (Interrupt Controller Test)......................... 144 IPC0 (Interrupt Priority Control 0) ............................. 122 IPC1 (Interrupt Priority Control 1) ............................. 123 IPC10 (Interrupt Priority Control 10) ......................... 132 IPC11 (Interrupt Priority Control 11) ......................... 133 IPC12 (Interrupt Priority Control 12) ......................... 134 IPC13 (Interrupt Priority Control 13) ......................... 135 IPC14 (Interrupt Priority Control 14) ......................... 136 IPC15 (Interrupt Priority Control 15) ......................... 137 IPC16 (Interrupt Priority Control 16) ......................... 138 IPC18 (Interrupt Priority Control 18) ......................... 139 IPC19 (Interrupt Priority Control 19) ......................... 139 IPC2 (Interrupt Priority Control 2) ............................. 124 IPC20 (Interrupt Priority Control 20) ......................... 140 IPC21 (Interrupt Priority Control 21) ......................... 141 IPC22 (Interrupt Priority Control 22) ......................... 142 IPC26 (Interrupt Priority Control 26) ......................... 143 IPC29 (Interrupt Priority Control 29) ......................... 143 IPC3 (Interrupt Priority Control 3) ............................. 125 IPC4 (Interrupt Priority Control 4) ............................. 126 IPC5 (Interrupt Priority Control 5) ............................. 127 IPC6 (Interrupt Priority Control 6) ............................. 128 IPC7 (Interrupt Priority Control 7) ............................. 129 IPC8 (Interrupt Priority Control 8) ............................. 130 IPC9 (Interrupt Priority Control 9) ............................. 131 MDCAR (DSM Carrier Control)................................. 302 MDCON (DSM Control) ............................................ 300 MDSRC (DSM Source Control) ................................ 301 MINSEC (RTCC Minutes and Seconds Value)......... 322 2013-2015 Microchip Technology Inc. MTHDY (RTCC Month and Day Value).................... 321 NVMCON (Flash Memory Control)............................. 81 OCxCON1 (Output Compare x Control 1) ................ 222 OCxCON2 (Output Compare x Control 2) ................ 224 OSCCON (Oscillator Control)................................... 149 OSCTUN (FRC Oscillator Tune) .............................. 152 PADCFG1 (Pad Configuration Control).................... 314 PMCON1 (EPMP Control 1) ..................................... 306 PMCON2 (EPMP Control 2) ..................................... 307 PMCON3 (EPMP Control 3) ..................................... 308 PMCON4 (EPMP Control 4) ..................................... 309 PMCSxBS (Chip Select x Base Address)................. 311 PMCSxCF (EPMP Chip Select x Configuration) ...... 310 PMCSxMD (EPMP Chip Select x Mode) .................. 312 PMSTAT (EPMP Status, Slave Mode) ..................... 313 RCFGCAL (RTCC Calibration and Configuration) ............................................ 317 RCON (Reset Control)................................................ 86 RCON2 (Reset and System Control 2)............... 88, 170 REFOCONH (Reference Oscillator Control High) .................................................... 158 REFOCONL (Reference Oscillator Control Low) ..................................................... 157 REFOTRIML (Reference Oscillator Trim)................. 159 RPINR0 (PPS Input 0).............................................. 183 RPINR1 (PPS Input 1).............................................. 183 RPINR11 (PPS Input 11).......................................... 186 RPINR17 (PPS Input 17).......................................... 186 RPINR18 (PPS Input 18).......................................... 187 RPINR19 (PPS Input 19).......................................... 187 RPINR2 (PPS Input 2).............................................. 184 RPINR20 (PPS Input 20).......................................... 188 RPINR21 (PPS Input 21).......................................... 188 RPINR22 (PPS Input 22).......................................... 189 RPINR23 (PPS Input 23).......................................... 189 RPINR27 (PPS Input 27).......................................... 190 RPINR28 (PPS Input 28).......................................... 190 RPINR29 (PPS Input 29).......................................... 191 RPINR30 (PPS Input 30).......................................... 191 RPINR31 (PPS Input 31).......................................... 192 RPINR7 (PPS Input 7).............................................. 184 RPINR8 (PPS Input 8).............................................. 185 RPINR9 (PPS Input 9).............................................. 185 RPOR0 (PPS Output 0)............................................ 193 RPOR1 (PPS Output 1)............................................ 193 RPOR10 (PPS Output 10)........................................ 198 RPOR11 (PPS Output 11)........................................ 198 RPOR12 (PPS Output 12)........................................ 199 RPOR2 (PPS Output 2)............................................ 194 RPOR3 (PPS Output 3)............................................ 194 RPOR4 (PPS Output 4)............................................ 195 RPOR5 (PPS Output 5)............................................ 195 RPOR6 (PPS Output 6)............................................ 196 RPOR7 (PPS Output 7)............................................ 196 RPOR8 (PPS Output 8)............................................ 197 RPOR9 (PPS Output 9)............................................ 197 RTCCSWT (RTCC Power Control and Sample Window Timer) .................................... 325 RTCPWC (RTCC Power Control)............................. 319 SPIxCON1H (SPIx Control 1 High) .......................... 233 SPIxCON1L (SPIx Control 1 Low)............................ 231 SPIxCON2L (SPIx Control 2 Low)............................ 235 SPIxIMSKH (SPIx Interrupt Mask High) ................... 240 SPIxIMSKL (SPIx Interrupt Mask Low)..................... 239 SPIxSTATH (SPIx Status High)................................ 238 DS30005009C-page 471 PIC24FJ128GB204 FAMILY SPIxSTATL (SPIx Status Low) ................................. 236 SR (ALU STATUS) ............................................... 32, 96 T1CON (Timer1 Control)........................................... 202 TxCON (Timer2 and Timer4 Control)........................ 208 TyCON (Timer3 and Timer5 Control)........................ 210 U1ADDR (USB Address) .......................................... 286 U1CNFG1 (USB Configuration 1) ............................. 288 U1CNFG2 (USB Configuration 2) ............................. 289 U1CON (USB Control, Device Mode) ....................... 284 U1CON (USB Control, Host Mode)........................... 285 U1EIE (USB Error Interrupt Enable) ......................... 296 U1EIR (USB Error Interrupt Status) .......................... 295 U1EPn (USB Endpoint n Control) ............................. 297 U1IE (USB Interrupt Enable, All Modes) ................... 294 U1IR (USB Interrupt Status, Device Mode) .............. 292 U1IR (USB Interrupt Status, Host Mode) .................. 293 U1OTGCON (USB OTG Control) ............................. 281 U1OTGIE (USB OTG Interrupt Enable, Host Mode) ....................................................... 291 U1OTGIR (USB OTG Interrupt Status, Host Mode) ....................................................... 290 U1OTGSTAT (USB OTG Status, Host Mode) .......... 280 U1PWRC (USB Power Control) ................................ 282 U1SOF (USB OTG SOF Count, Host Mode) ............ 287 U1STAT (USB Status) .............................................. 283 U1TOK (USB Token, Host Mode) ............................. 286 UxADMD (UARTx Address Match Detect)................ 262 UxMODE (UARTx Mode) .......................................... 258 UxSCCON (UARTx Smart Card Control).................. 263 UxSCINT (UARTx Smart Card Interrupt) .................. 264 UxSTA (UARTx Status and Control) ......................... 260 UxTXREG (UARTx Transmit) ................................... 262 WKDYHR (RTCC Weekday and Hours Value) ......... 322 YEAR (RTCC Year Value) ........................................ 321 Resets and Fail-Safe Clock Monitor........................................ 90 BOR (Brown-out Reset) .............................................. 85 Brown-out Reset (BOR) .............................................. 89 Clock Source Selection ............................................... 89 CM (Configuration Mismatch Reset) ........................... 85 Delay Times ................................................................ 90 Device Times .............................................................. 89 IOPUWR (Illegal Opcode Reset) ................................ 85 MCLR (Master Clear Pin Reset) ................................. 85 POR (Power-on Reset) ............................................... 85 RCON Flags, Operation .............................................. 88 SFR States.................................................................. 89 SWR (RESET Instruction)........................................... 85 TRAPR (Trap Conflict Reset)...................................... 85 UWR (Uninitialized W Register Reset)........................ 85 WDT (Watchdog Timer Reset).................................... 85 Revision History ................................................................ 465 RTCC Alarm Configuration .................................................. 326 Alarm Mask Settings (figure)..................................... 327 ALRMVAL Register Mappings .................................. 323 Calibration ................................................................. 326 Clock Source Selection ............................................. 316 Control Registers ...................................................... 317 Module Registers ...................................................... 316 Power Control ........................................................... 327 Register Mapping ...................................................... 316 DS30005009C-page 472 RTCVAL Register Mappings..................................... 321 Source Clock ............................................................ 315 VBAT Operation ......................................................... 327 Write Lock................................................................. 316 S Selective Peripheral Module Control ................................ 171 Serial Peripheral Interface (SPI) ....................................... 227 Serial Peripheral Interface. See SPI. SFR Space ......................................................................... 38 Software Simulator MPLAB X SIM........................................................... 405 Software Stack.................................................................... 64 Special Features................................................................. 10 SPI Audio Mode .............................................................. 230 Control Registers ...................................................... 230 Enhanced Master Mode............................................ 229 Enhanced Slave Mode ............................................. 229 Standard Master Mode ............................................. 228 Standard Slave Mode ............................................... 228 T Timer1............................................................................... 201 Timer2/3 and Timer4/5 ..................................................... 205 Timing Diagrams CLKO and I/O Characteristics .................................. 430 External Clock........................................................... 428 I2C Bus Data (Master Mode) .................................... 442 I2C Bus Data (Slave Mode) ...................................... 444 I2C Bus Start/Stop Bits (Master Mode) ..................... 441 I2C Bus Start/Stop Bits (Slave Mode) ....................... 443 Input Capture x (ICx) ................................................ 434 OCx/PWM Characteristics ........................................ 435 Output Compare x (OCx).......................................... 434 SPIx Master Mode (CKE = 0) ................................... 436 SPIx Master Mode (CKE = 1) ................................... 437 SPIx Slave Mode (CKE = 0) ..................................... 438 SPIx Slave Mode (CKE = 1) ..................................... 439 Timer1, 2, 3, 4, 5 External Clock .............................. 432 Triple Comparator............................................................. 371 Triple Comparator Module ................................................ 371 U UART Baud Rate Generator (BRG) .................................... 255 Control Registers ...................................................... 258 Infrared Support........................................................ 256 Operation of UxCTS and UxRTS Pins...................... 256 Receiving 8-Bit or 9-Bit Data Mode ................................... 256 Smart Card ISO 7816 Support.................................. 257 Transmitting 8-Bit Data Mode................................................ 256 9-Bit Data Mode................................................ 256 Break and Sync Sequence ............................... 256 Universal Asynchronous Receiver Transmitter. See UART. Universal Serial Bus. See USB OTG. USB On-The-Go (OTG) ...................................................... 10 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY USB OTG .......................................................................... 265 Buffer Descriptors Assignment in Different Buffering Modes ......... 271 Buffer Descriptors and BDT ...................................... 270 Control Registers ...................................................... 279 Controller-Centric Data Direction for Host or Target ........................................................... 265 Device Mode Operation ............................................ 275 DMA Interface ........................................................... 271 Hardware Configuration ............................................ 267 Calculating Transceiver Power Requirements ........................................... 269 Device Mode ..................................................... 267 Host and OTG Modes ....................................... 268 Power Modes Bus Power Only ........................................ 267 Dual Power with Self-Power Dominance ....................................... 267 Self-Power Only........................................ 267 VBUS Voltage Generation.................................. 269 Host Mode Operation................................................ 276 Interrupts................................................................... 274 and USB Transactions ...................................... 275 Operation .................................................................. 278 Host Negotiation Protocol (HNP) ...................... 279 Session Request Protocol (SRP)...................... 278 2013-2015 Microchip Technology Inc. W Watchdog Timer (WDT).................................................... 400 Control Register........................................................ 400 Windowed Operation ................................................ 400 WWW Address ................................................................. 473 WWW, On-Line Support ....................................................... 7 DS30005009C-page 473 PIC24FJ128GB204 FAMILY NOTES: DS30005009C-page 474 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY THE MICROCHIP WEB SITE CUSTOMER SUPPORT Microchip provides online support via our WWW site at www.microchip.com. This web site is used as a means to make files and information easily available to customers. Accessible by using your favorite Internet browser, the web site contains the following information: Users of Microchip products can receive assistance through several channels: * Product Support - Data sheets and errata, application notes and sample programs, design resources, user's guides and hardware support documents, latest software releases and archived software * General Technical Support - Frequently Asked Questions (FAQ), technical support requests, online discussion groups, Microchip consultant program member listing * Business of Microchip - Product selector and ordering guides, latest Microchip press releases, listing of seminars and events, listings of Microchip sales offices, distributors and factory representatives * * * * Distributor or Representative Local Sales Office Field Application Engineer (FAE) Technical Support Customers should contact their distributor, representative or Field Application Engineer (FAE) for support. Local sales offices are also available to help customers. A listing of sales offices and locations is included in the back of this document. Technical support is available through the web site at: http://microchip.com/support CUSTOMER CHANGE NOTIFICATION SERVICE Microchip's customer notification service helps keep customers current on Microchip products. Subscribers will receive e-mail notification whenever there are changes, updates, revisions or errata related to a specified product family or development tool of interest. To register, access the Microchip web site at www.microchip.com. Under "Support", click on "Customer Change Notification" and follow the registration instructions. 2013-2015 Microchip Technology Inc. DS30005009C-page 475 PIC24FJ128GB204 FAMILY NOTES: DS30005009C-page 476 2013-2015 Microchip Technology Inc. PIC24FJ128GB204 FAMILY PRODUCT IDENTIFICATION SYSTEM To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office. PIC 24 FJ 128 GB2 04 T - I / PT - XXX Examples: a) Microchip Trademark Architecture Flash Memory Family Program Memory Size (KB) Product Group Pin Count b) PIC24FJ128GB202-I/MM: PIC24F device with USB On-The-Go, 128-Kbyte program memory, 8-Kbyte data memory, 28-pin, Industrial temp., QFN-S package. PIC24FJ128GB204-I/PT: PIC24F device with USB On-The-Go, 128-Kbyte program memory, 8-Kbyte data memory, 44-pin, Industrial temp., TQFP package. Tape and Reel Flag (if applicable) Temperature Range Package Pattern Architecture 24 = 16-bit modified Harvard without DSP Flash Memory Family FJ = Flash program memory Product Group GB2 = General purpose microcontrollers with USB On-The-Go (OTG) Pin Count 02 04 = 28-pin = 44-pin Temperature Range I E = -40C to +85C (Industrial) = -40C to +125C (Extended) Package MM ML PT SO SP SS = = = = = = Pattern Three-digit QTP, SQTP, Code or Special Requirements (blank otherwise) ES = Engineering Sample 28-lead (6x6x0.9 mm) QFN-S (Plastic Quad Flat) 44-lead (8x8 mm) QFN (Plastic Quad Flat) 44-lead (10x10x1 mm) TQFP (Thin Quad Flatpack) 28-lead (7.50 mm wide) SOIC (Small Outline) 28-lead (300 mil) SPDIP (Skinny Plastic Dual In-Line) 28-lead (5.30 mm) SSOP (Plastic Shrink Small Outline) 2013-2015 Microchip Technology Inc. DS30005009C-page 477 PIC24FJ128GB204 FAMILY NOTES: DS30005009C-page 478 2013-2015 Microchip Technology Inc. Note the following details of the code protection feature on Microchip devices: * Microchip products meet the specification contained in their particular Microchip Data Sheet. * Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the intended manner and under normal conditions. * There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip's Data Sheets. Most likely, the person doing so is engaged in theft of intellectual property. * Microchip is willing to work with the customer who is concerned about the integrity of their code. * Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not mean that we are guaranteeing the product as "unbreakable." Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our products. Attempts to break Microchip's code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act. Information contained in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORY OR OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE. Microchip disclaims all liability arising from this information and its use. Use of Microchip devices in life support and/or safety applications is entirely at the buyer's risk, and the buyer agrees to defend, indemnify and hold harmless Microchip from any and all damages, claims, suits, or expenses resulting from such use. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights. Trademarks The Microchip name and logo, the Microchip logo, dsPIC, FlashFlex, flexPWR, JukeBlox, KEELOQ, KEELOQ logo, Kleer, LANCheck, MediaLB, MOST, MOST logo, MPLAB, OptoLyzer, PIC, PICSTART, PIC32 logo, RightTouch, SpyNIC, SST, SST Logo, SuperFlash and UNI/O are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. The Embedded Control Solutions Company and mTouch are registered trademarks of Microchip Technology Incorporated in the U.S.A. Analog-for-the-Digital Age, BodyCom, chipKIT, chipKIT logo, CodeGuard, dsPICDEM, dsPICDEM.net, ECAN, In-Circuit Serial Programming, ICSP, Inter-Chip Connectivity, KleerNet, KleerNet logo, MiWi, MPASM, MPF, MPLAB Certified logo, MPLIB, MPLINK, MultiTRAK, NetDetach, Omniscient Code Generation, PICDEM, PICDEM.net, PICkit, PICtail, RightTouch logo, REAL ICE, SQI, Serial Quad I/O, Total Endurance, TSHARC, USBCheck, VariSense, ViewSpan, WiperLock, Wireless DNA, and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. Silicon Storage Technology is a registered trademark of Microchip Technology Inc. in other countries. GestIC is a registered trademarks of Microchip Technology Germany II GmbH & Co. KG, a subsidiary of Microchip Technology Inc., in other countries. All other trademarks mentioned herein are property of their respective companies. (c) 2013-2015, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved. ISBN: 978-1-63277-204-6 QUALITY MANAGEMENT SYSTEM CERTIFIED BY DNV == ISO/TS 16949 == 2013-2015 Microchip Technology Inc. Microchip received ISO/TS-16949:2009 certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona; Gresham, Oregon and design centers in California and India. The Company's quality system processes and procedures are for its PIC(R) MCUs and dsPIC(R) DSCs, KEELOQ(R) code hopping devices, Serial EEPROMs, microperipherals, nonvolatile memory and analog products. In addition, Microchip's quality system for the design and manufacture of development systems is ISO 9001:2000 certified. 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