ATWILC1000-MR1100A DATASHEET IEEE 802.11 b/g/n Link Controller SoC Datasheet Description The Atmel(R) ATWILC1000-MR1100A is a low-power consumption 802.11 b/g/n IoT (Internet of Things) module which is specifically optimized for low power IoT applications. The highly integrated module features small form factor (14.48 x 13.46 x 3.35mm) while fully integrating Power Amplifier, LNA, Switch, and Power Management. With seamless roaming capabilities and advanced security, it could be interoperable with various vendors' 802.11b/g/n Access Points in wireless LAN. The module provides SPI and SDIO to interface to host controller. Features IEEE(R) 802.11 b/g/n 20MHz (1x1) solution Single spatial stream in 2.4GHz ISM band Integrated PA and T/R Switch Superior Sensitivity and Range via advanced PHY signal processing Advanced Equalization and Channel Estimation Advanced Carrier and Timing Synchronization Wi-Fi Direct(R) and Soft-AP support Supports IEEE 802.11 WEP, WPA, WPA2 Security Supports China WAPI security Superior MAC throughput via hardware accelerated two-level A-MSDU/AMPDU frame aggregation and block acknowledgement On-chip memory management engine to reduce host load SPI, SDIO, UART, and I2C host interfaces 2-/3-wire Bluetooth(R) coexistence interface Operating temperature range of -40 to +85C Power save modes: - <1A Deep Power Down mode typical @3.3V I/O - 280A Doze mode with chip settings preserved (used for beacon monitoring) - On-chip low power sleep oscillator - Fast host wake-up from Doze mode by a pin or host I/O transaction Atmel-42432A-WILC1000-MR1100PA-SmartConnect-Datasheet_032015 Ta bl e of Conte nts 1 Ordering Information and Module Marking ................................................................ 4 2 Block Diagram ............................................................................................................. 5 3 Pin-out and Package Information ............................................................................... 5 3.1 3.2 4 Electrical Specifications ............................................................................................. 9 4.1 4.2 5 6.2 6.3 7.2 7.3 7.4 7.5 SPI Interface ....................................................................................................................................... 14 7.1.1 Overview................................................................................................................................. 14 7.1.2 SPI Timing .............................................................................................................................. 14 UART Interface ................................................................................................................................... 16 SDIO Interface .................................................................................................................................... 16 7.3.1 Overview................................................................................................................................. 16 7.3.2 Features ................................................................................................................................. 17 7.3.3 SDIO Timing ........................................................................................................................... 17 I2C Interface ........................................................................................................................................ 18 7.4.1 Overview................................................................................................................................. 18 7.4.2 I2C Timing ............................................................................................................................... 18 Wi-Fi/Bluetooth Coexistence ............................................................................................................... 19 Description of Device States ............................................................................................................... 20 Controlling the Device States .............................................................................................................. 20 Restrictions for Power States .............................................................................................................. 20 Power-Up/Down Sequence ................................................................................................................. 20 Digital I/O Pin Behavior during Power-up Sequences ......................................................................... 22 Notes on Interfacing to the ATWILC1000-MR1100 .................................................. 23 9.1 2 .............................................................................................................................................. 11 Features ................................................................................................................................. 11 Description.............................................................................................................................. 11 .............................................................................................................................................. 12 Features ................................................................................................................................. 12 Description.............................................................................................................................. 12 .............................................................................................................................................. 12 Power Consumption .................................................................................................. 20 8.1 8.2 8.3 8.4 8.5 9 MAC 6.1.1 6.1.2 PHY 6.2.1 6.2.2 Radio External Interfaces .................................................................................................... 14 7.1 8 Processor ............................................................................................................................................ 10 Memory Subsystem............................................................................................................................. 10 Non-Volatile Memory (eFuse) ............................................................................................................. 10 WLAN Subsystem ...................................................................................................... 11 6.1 7 Absolute Ratings ................................................................................................................................... 9 Recommended Operating Ratings ........................................................................................................ 9 CPU and Memory Subsystems ................................................................................. 10 5.1 5.2 5.3 6 Pin Description ...................................................................................................................................... 5 Module Outline Drawings ...................................................................................................................... 8 Programmable Pull-up Resistors ......................................................................................................... 23 ATWILC1000-MR1100A [DATASHEET] 2 Atmel-42432A-WILC1000-MR1100PA-SmartConnect-Datasheet_032015 10 Recommended Footprint .......................................................................................... 23 11 RF Performance Placement Guidelines ................................................................... 24 12 Recommended Reflow Profile .................................................................................. 25 13 Module Schematics ................................................................................................... 26 14 Module Bill of Materials (BOM) ................................................................................. 27 15 Application Reference Design .................................................................................. 28 16 Reference Documentation and Support................................................................... 30 16.1 Reference Documents......................................................................................................................... 30 17 Revision History ........................................................................................................ 31 ATWILC1000-MR1100A [DATASHEET] Atmel-42432A-WILC1000-MR1100PA-SmartConnect-Datasheet_032015 3 3 1 Ordering Information and Module Marking Table 1-1. Ordering Details Ordering Code Package Description ATWILC1000-MR1100A 14.48 x 13.46 x 3.35mm Certified module with ATWILC1000A-Mu chip Figure 1-2. Marking Information ATWILC1000MR 1 1 0 0 A A Blank = Tray Packing MR = Industrial 0 = No OTA/ No Shield 1 = No OTA with Shield 2 = OTA with Shield 7 = OTA/ No Shield 1 = 2.4GHz 4 Revision Letter 0 = No FEM 1 = FEM ATWILC1000-MR1100A [DATASHEET] 4 Atmel-42432A-WILC1000-MR1100PA-SmartConnect-Datasheet_032015 0 = No Antenna P = PCB Antenna C = Chip Antenna 2 Block Diagram Figure 2-1. Block Diagram VBAT VDDIO I2C RX/TX SDIO~_SPI_CFG SPI/SDIO GPIO3 GPIO4 ATWILC1000A 802.11 B,G,N SOC GPIO5 GPIO6 IRQN 26 Mhz Crystal Chip_En WAKE RESET GND 3 Pin-out and Package Information 3.1 Pin Description Figure 3-1. Pin Assignment ATWILC1000-MR1100A [DATASHEET] Atmel-42432A-WILC1000-MR1100PA-SmartConnect-Datasheet_032015 5 5 Table 3-1. NO 1 2 3 Name GPIO_6 I2C_SCL I2C_SDA Type Description Programmable Pull-up Resistor I/O General purpose I/O. Yes I/O I2C Slave Clock. Can be configured as either master or slave. I2C interface is only used for test purposes. This pin should be brought to a test point only. Do not add a pull-up resistor. Yes I/O I2C Slave Data. Can be configured as either master or slave. I2C interface is only used for test purposes. This pin should be brought to a test point only. Do not add a pull-up resistor. Yes No 4 RESET_N I Active-Low Hard Reset. When asserted to a low level, the module will be placed in a reset state. When asserted to a high level, the module will run normally. Connect to a host output that defaults low at power up. If the output floats, add a 1M pull-down resistor if necessary to ensure a low level at power up. 5 NC - No connect 6 NC - No connect 7 NC - No connect 8 GND - GND 9 NC - No connect 10 GND - GND 11 RF_IN I RF Input 12 GND - GND 13 SDIO_SPI_CFG I Tie to VDDIO through a 1M resistor to enable the SPI interface. Connect to ground to enable SDIO interface. No 14 WAKE I Host Wake control. Can be used to wake up the module from Doze mode. Connect to a host GPIO. No 15 GND - GND 16 IRQN O ATWINC1000 Device Interrupt. No SDIO Data Line 3 from ATWILC1000-MR1100A when module is configured for SDIO. UART Transmit Output from ATWILC1000 when module is configured for SPI. Yes 17 6 Pin Description SD_DAT3/UART_TXD SDIO=I/O UART=O ATWILC1000-MR1100A [DATASHEET] 6 Atmel-42432A-WILC1000-MR1100PA-SmartConnect-Datasheet_032015 NO 18 19 20 21 Name Type Programmable Pull-up Resistor Description SD_DAT2/SPI_RXD SDIO=I/O SPI=I SDIO Data Line 2 signal from ATWILC1000MR1100A when module is configured for SDIO. SPI MOSI (Master Out Slave In) pin when module is configured for SPI. Yes SD_DAT1/SPI_SSN SDIO=I/O SPI=I SDIO Data Line 1 from ATWILC1000-MR1100A when module is configured for SDIO. Active Low SPI Slave Select from ATWILC1000 when module is configured for SPI. Yes SD_DAT0/SPI_TXD SDIO=I/O SPI=O SDIO Data Line 0 from ATWILC1000-MR1100A when module is configured for SDIO. SPI MISO (Master In Slave Out) pin from ATWILC1000 when module is configured for SPI. Yes SD_CMD/SPI_SCK SDIO=I/O SPI=I SDIO CMD Line from ATWILC1000-MR1100A when module is configured for SDIO. SPI Clock from ATWILC1000 when module is configured for SPI. Yes SDIO=I UART=I SDIO Clock Line from ATWILC1000-MR1100A when module is configured for SDIO. UART Receive input to ATWILC1000 when module is configured for SPI. Yes 22 SD_CLK/UART_RXD 23 VBATT - Battery power supply 24 GPIO_1 I General Purpose I/O. Yes No 25 CHIP_EN I Module enable. High level enables module, low level places module in Power Down mode. Connect to a host Output that defaults low at power up. If the output floats, add a 1M pull-down resistor if necessary to ensure a low level at power up. 26 VDDIO - I/O Power Supply. Must match host I/O voltage. 27 1P3V_TP - 1.3V VDD Core Test Point 28 GPIO_3 - General purpose I/O. Yes 29 GPIO_4 I/O General purpose I/O. Yes 30 GPIO_5 I/O General purpose I/O. Yes 31 GND - GND ATWILC1000-MR1100A [DATASHEET] Atmel-42432A-WILC1000-MR1100PA-SmartConnect-Datasheet_032015 7 7 3.2 Module Outline Drawings Figure 3-2. 8 Module Drawings ATWILC1000-MR1100A [DATASHEET] 8 Atmel-42432A-WILC1000-MR1100PA-SmartConnect-Datasheet_032015 4 Electrical Specifications 4.1 Absolute Ratings Table 4-1. 4.2 Voltages Symbol Description Min. Max. Unit VBAT Input supply Voltage -0.3 5.5 V VDDIO SPI, SDIO, GPIO Voltage -0.3 3.6 V Recommended Operating Ratings Table 4-2. Pin Recommended Operating Ratings Test Conditions: -40C - +85C Symbol Min. Typ. Max. Unit VBAT 3.0 3.6 4.2 V VDDIO 1.8 3.3 3.6 V Note: The voltage of VDDIO is dependent on system I/O voltage. ATWILC1000-MR1100A [DATASHEET] Atmel-42432A-WILC1000-MR1100PA-SmartConnect-Datasheet_032015 9 9 5 CPU and Memory Subsystems 5.1 Processor ATWILC1000A has a Cortus APS3 32-bit processor. This processor performs many of the MAC functions, including but not limited to association, authentication, power management, security key management, and MSDU aggregation/de-aggregation. In addition, the processor provides flexibility for various modes of operation, such as STA and AP modes. 5.2 Memory Subsystem The APS3 core uses a 128KB instruction/boot ROM along with a 128KB instruction RAM and a 64KB data RAM. In addition, the device uses a 128KB shared RAM, accessible by the processor and MAC, which allows the APS3 core to perform various data management tasks on the TX and RX data packets. 5.3 Non-Volatile Memory (eFuse) ATWILC1000A has 768 bits of non-volatile eFuse memory that can be read by the CPU after device reset. This non-volatile one-time-programmable (OTP) memory can be used to store customer-specific parameters, such as MAC address; various calibration information, such as TX power, crystal frequency offset, etc.; and other software-specific configuration parameters. The eFuse is partitioned into six 128-bit banks. Each bank has the same bit map, which is shown in Figure 5-1. The purpose of the first 80 bits in each bank is fixed, and the remaining 48 bits are general-purpose software dependent bits, or reserved for future use. Since each bank can be programmed independently, this allows for several updates of the device parameters following the initial programming, e.g. updating MAC address. Refer to ATWILC1000A Programming Guide for the eFuse programming instructions. Flags 8 Bank 0 F 48 MAC ADDR 8 G 16 FO Bank 1 Bank 2 Bank 3 Bank 4 Bank 5 128 Bits 10 ATWILC1000-MR1100A [DATASHEET] 1 Atmel-42432A-WILC1000-MR1100PA-SmartConnect-Datasheet_032015 0 1 15 Freq. Offset 7 Used 1 TX Gain Correc tion 1 Used 4 MAC ADDR Used 3 Reserved 1 Invalid Used 1 eFuse Bit Map Version Figure 5-1. 6 WLAN Subsystem The WLAN subsystem is composed of the Media Access Controller (MAC) and the Physical Layer (PHY). The following two subsections describe the MAC and PHY in detail. 6.1 MAC 6.1.1 Features The ATWILC1000A IEEE802.11 MAC supports the following functions: IEEE 802.11b/g/n IEEE 802.11e WMM QoS EDCA/PCF multiple access categories traffic scheduling Advanced IEEE 802.11n features: 6.1.2 - Transmission and reception of aggregated MPDUs (A-MPDU) - Transmission and reception of aggregated MSDUs (A-MSDU) - Immediate Block Acknowledgement - Reduced Interframe Spacing (RIFS) Support for IEEE802.11i and WFA security with key management - WEP 64/128 - WPA-TKIP - 128-bit WPA2 CCMP (AES) Support for WAPI security Advanced power management - Standard 802.11 Power Save Mode - Wi-Fi Alliance WMM-PS (U-APSD) RTS-CTS and CTS-self support Supports either STA or AP mode in the infrastructure basic service set mode Supports independent basic service set (IBSS) Description The ATWILC1000A MAC is designed to operate at low power while providing high data throughput. The IEEE 802.11 MAC functions are implemented with a combination of dedicated datapath engines, hardwired control logic, and a low-power, high-efficiency microprocessor. The combination of dedicated logic with a programmable processor provides optimal power efficiency and real-time response while providing the flexibility to accommodate evolving standards and future feature enhancements. Dedicated datapath engines are used to implement data path functions with heavy computational. For example, an FCS engine checks the CRC of the transmitting and receiving packets, and a cipher engine performs all the required encryption and decryption operations for the WEP, WPA-TKIP, WPA2 CCMP-AES, and WAPI security requirements. Control functions which have real-time requirements are implemented using hardwired control logic modules. These logic modules offer real-time response while maintaining configurability via the processor. Examples of hardwired control logic modules are the channel access control module (implements EDCA/HCCA, Beacon TX control, interframe spacing, etc.), protocol timer module (responsible for the Network Access Vector, back-off timing, timing synchronization function, and slot management), MPDU handling module, aggregation/deaggregation module, block ACK controller (implements the protocol requirements for burst block communication), and TX/RX control FSMs (coordinate data movement between PHY-MAC interface, cipher engine, and the DMA interface to the TX/RX FIFOs). ATWILC1000-MR1100A [DATASHEET] Atmel-42432A-WILC1000-MR1100PA-SmartConnect-Datasheet_032015 11 1 1 The MAC functions implemented solely in software on the microprocessor have the following characteristics: Functions with high memory requirements or complex data structures. Examples are association table management and power save queuing. Functions with low computational load or without critical real-time requirements. Examples are authentication and association. Functions which need flexibility and upgradeability. Examples are beacon frame processing and QoS scheduling. 6.2 PHY 6.2.1 Features The ATWILC1000A IEEE802.11 PHY supports the following functions: 6.2.2 Single antenna 1x1 stream in 20MHz channels Supports IEEE 802.11b DSSS-CCK modulation: 1, 2, 5.5, 11Mbps Supports IEEE 802.11g OFDM modulation: 6, 9, 12,18, 24, 36, 48, 54Mbps Supports IEEE 802.11n HT modulations MCS0-7, 20MHz, 800 and 400ns guard interval: 6.5, 7.2, 13.0, 14.4, 19.5, 21.7, 26.0, 28.9, 39.0, 43.3, 52.0, 57.8, 58.5, 65.0, 72.2Mbps IEEE 802.11n mixed mode operation Per packet TX power control Advanced channel estimation/equalization, automatic gain control, CCA, carrier/symbol recovery, and frame detection Description The ATWILC1000A WLAN PHY is designed to achieve reliable and power-efficient physical layer communication specified by IEEE 802.11 b/g/n in single stream mode with 20MHz bandwidth. Advanced algorithms have been employed to achieve maximum throughput in a real world communication environment with impairments and interference. The PHY implements all the required functions such as FFT, filtering, FEC (Viterbi decoder), frequency and timing acquisition and tracking, channel estimation and equalization, carrier sensing and clear channel assessment, as well as the automatic gain control. 6.3 Radio Table 6-1. Radio Performance under Typical Conditions: VBAT=3.6V; VDDIO=3.3V; Temp.: 25C Feature Description Module Part Number ATWILC1000-MR1100A WLAN Standard IEEE 802.11b/g/n, Wi-Fi compliant Host Interface SPI, SDIO Dimension L x W x H: 14.48 x 13.46 x 3.35 (typical) mm Frequency Range 2.412GHz ~ 2.4835GHz (2.4GHz ISM Band) Number of Channels 11 for North America, 13 for Europe, and 14 for Japan Modulation 802.11b: DQPSK, DBPSK, CCK 802.11g/n: OFDM/64-QAM,16-QAM, QPSK, BPSK 802.11b/11Mbps: 19dBm 1.5dB @ EVM -9dB Output Power1 802.11g/54Mbps: 14.5dBm 2dB @ EVM -25dB 12 ATWILC1000-MR1100A [DATASHEET] 1 Atmel-42432A-WILC1000-MR1100PA-SmartConnect-Datasheet_032015 2 Feature Description 802.11n/65Mbps: 13dBm 2dB @ EVM -28dB Receive Sensitivity (11n,20MHz) @10% PER Receive Sensitivity (11g) @10% PER Receive Sensitivity (11b) @8% PER - MCS=0 PER @ -90 1dBm, typical - MCS=1 PER @ -86 1dBm, typical - MCS=2 PER @ -84 1dBm, typical - MCS=3 PER @ -81.5 1dBm, typical - MCS=4 PER @ -78 1dBm, typical - MCS=5 PER @ -74 1dBm, typical - MCS=6 PER @ -72.5 1dBm, typical - MCS=7 PER @ -71.5 1dBm, typical - 6Mbps PER @ -91 1dBm, typical - 9Mbps PER @ -89 1dBm, typical - 12Mbps PER @ -88.5 1dBm, typical - 18Mbps PER @ -86.5 1dBm, typical - 24Mbps PER @ -84 1dBm, typical - 36Mbps PER @ -78.5 1dBm, typical - 48Mbps PER @ -77 1dBm, typical - 54Mbps PER @ -75 1dBm, typical - 1Mbps PER @ -98 1dBm, typical - 2Mbps PER @ -95 1dBm, typical - 5.5Mbps PER @ -93 1dBm, typical - 11Mbps PER @ -89 1dBm, typical 802.11b: 1, 2, 5.5, 11Mbps Data Rate 802.11g: 6, 9, 12, 18, 24, 36, 48, 54Mbps Data Rate 802.11n: 6.5, 13, 19.5, 26, 39, 52, 58.5, 65Mbps Data Rate (20MHz ,short GI,400ns) 802.11n: 7.2, 14.4, 21.7, 28.9, 43.3, 57.8, 65,72.2Mbps 802.11b: 0dBm typical Maximum Input Level 802.11g/n: -5dBm typical Operating temperature2 -40C to 85C Storage temperature -40C to 85C Humidity Operating Humidity 10% to 95% Non-Condensing Storage Humidity 5% to 95% Non-Condensing Notes: 1. 2. Measured at 802.11 spec compliant EVM/Spectral Mask. RF performance guaranteed for temperature range -30 to 85C. 1dB derating in performance at -40C. ATWILC1000-MR1100A [DATASHEET] Atmel-42432A-WILC1000-MR1100PA-SmartConnect-Datasheet_032015 13 1 3 7 External Interfaces 7.1 SPI Interface 7.1.1 Overview When the module is configured for SPI mode by connecting the SDIO~_SPI_CFG pin to VDDIO, the ATWILC1000-MR1100 has a Serial Peripheral Interface (SPI) that operates as a SPI slave. The SPI interface can be used for control and for serial I/O of 802.11 data. The SPI pins are mapped as shown in Table 7-1. The SPI is a full-duplex slave-synchronous serial interface that is available immediately following reset when pin 10 (SPI_CFG) is tied to VDDIO. Table 7-1. SPI Interface Pin Mapping Pin # SPI Function 10 CFG: Must be tied to VDDIO 16 SSN: Active Low Slave Select 15 MOSI: Serial Data Receive 18 SCK: Serial Clock 17 MISO: Serial Data Transmit When the SPI is not selected, i.e., when SSN is high, the SPI interface will not interfere with data transfers between the serial-master and other serial-slave devices. When the serial slave is not selected, its transmitted data output is buffered, resulting in a high impedance drive onto the MISO line. The SPI interface responds to a protocol that allows an external host to read or write any register in the chip as well as initiate DMA transfers. The SPI SSN, MOSI, MISO and SCK pins of the ATWILC1000-MR1100 have internal programmable pull-up resistors (see Section 8.1). These resistors should be programmed to be disabled. Otherwise, if any of the SPI pins are driven to a low level while the ATWILC1000-MR1100 is in the low power sleep state, current will flow from the VDDIO supply through the pull-up resistors, increasing the current consumption of the module. 7.1.2 SPI Timing The SPI timing is provided in Figure 7-1 and Table 7-2. 14 ATWILC1000-MR1100A [DATASHEET] 1 Atmel-42432A-WILC1000-MR1100PA-SmartConnect-Datasheet_032015 4 Figure 7-1. SPI Timing Diagram (SPI Mode CPOL=0, CPHA=0) Table 7-2. SPI Slave Timing Parameters Parameter Symbol Min. Max. Unit Clock Input Frequency fSCK 48 MHz Clock Low Pulse Width tWL 15 Clock High Pulse Width tWH 15 Clock Rise Time tLH 10 Clock Fall Time tHL 10 Input Setup Time tISU 5 Input Hold Time tIHD 5 Output Delay tODLY 0 Slave Select Setup Time tSUSSN 5 Slave Select Hold Time tHDSSN 5 Remarks ns 20 ATWILC1000-MR1100A [DATASHEET] Atmel-42432A-WILC1000-MR1100PA-SmartConnect-Datasheet_032015 15 1 5 7.2 UART Interface When the module is configured for SPI mode by connecting the SDIO~_SPI_CFG pin to VDDIO, the ATWILC1000-MR1100 has a Universal Asynchronous Receiver/Transmitter (UART) interface available on pins J14 and J19. It can be used for control or data transfer if the baud rate is sufficient for a given application. The UART is compatible with the RS-232 standard, where NMC1000 operates as Data Terminal Equipment (DTE). It has a two-pin RXD/TXD interface. The UART features programmable baud rate generation with fractional clock division, which allows transmission and reception at a wide variety of standard and non-standard baud rates. The UART input clock is selectable between 10MHz, 5MHz, 2.5MHz, and 1.25MHz. The clock divider value is programmable as 13 integer bits and three fractional bits (with 8.0 being the smallest recommended value for normal operation). This results in the maximum supported baud rate of 10MHz/8.0 = 1.25MBd. The UART can be configured for seven or eight bit operation, with or without parity, with four different parity types (odd, even, mark, or space), and with one or two stop bits. It also has RX and TX FIFOs, which ensure reliable high speed reception and low software overhead transmission. FIFO size is 4x8 for both RX and TX direction. The UART also has status registers showing the number of received characters available in the FIFO and various error conditions, as well the ability to generate interrupts based on these status bits. An example of UART receiving or transmitting a single packet is shown in Figure 7-2. This example shows 7-bit data (0x45), odd parity, and two stop bits. See the ATWILC1000-MR1100 Programming Guide for information on configuring the UART. Figure 7-2. Example of UART RX or TX Packet 7.3 SDIO Interface 7.3.1 Overview When the module is configured for SDIO mode by connecting the SDIO~_SPI_CFG pin to Ground, the ATWILC1000-MR1100 has a SDIO interface. The SDIO interface can be used for control and for serial I/O of 802.11 data. The SDIO pins are mapped as shown in 0. The SDIO interface is available immediately following reset when pin 10 (SPI_CFG) is tied to ground. The ATWILC1000-MR1100 SDIO is a full speed interface. The interface supports the 1-bit/4-bit SD transfer mode at the clock range of 0 - 50MHz. The Host can use this interface to read and write from any register within the chip as well as configure the ATWILC1000-MR1100 for data DMA. 16 ATWILC1000-MR1100A [DATASHEET] 1 Atmel-42432A-WILC1000-MR1100PA-SmartConnect-Datasheet_032015 6 Table 7-3. ATWILC1000 SDIO Interface Pin Mapping Pin # SDIO Function 10 CFG: Must be tied to ground 14 DAT3: Data 3 15 DAT2: Data 2 16 DAT1: Data 1 17 DAT0: Data 0 18 CMD: Command 19 CLK: Clock When the SDIO card is inserted into an SDIO aware host, the detection of the card will be via the means described in SDIO specification. During the normal initialization and interrogation of the card by the host, the card will identify itself as an SDIO device. The host software will obtain the card information in a tuple (linked list) format and determine if that card's I/O function(s) are acceptable to activate. If the card is acceptable, it will be allowed to power up fully and start the I/O function(s) built into it. The SD memory card communication is based on an advanced 9-pin interface (Clock, Command, four data and three power lines) designed to operate at maximum operating frequency of 50MHz. 7.3.2 7.3.3 Features Meets SDIO card specification version 2.0 Host clock rate variable between 0 and 50MHz 1-bit/4-bit SD bus modes supported Allows card to interrupt host Responds to Direct read/write (IO52) and Extended read/write (IO53) transactions Supports Suspend/Resume operation SDIO Timing Figure 7-3. SDIO Timing Diagram fpp tWL SD_CLK tHL tWH tLH tISU tIH Inputs tODLY(MAX) tODLY(MIN) Outputs ATWILC1000-MR1100A [DATASHEET] Atmel-42432A-WILC1000-MR1100PA-SmartConnect-Datasheet_032015 17 1 7 Table 7-4. SDIO Timing Parameters Parameter Symbol Min. Max. Unit Clock Input Frequency fPP 0 50 MHz Clock Low Pulse Width tWL 10 Clock High Pulse Width tWH 10 Clock Rise Time tLH 10 Clock Fall Time tHL 10 Input Setup Time tISU 5 Input Hold Time tIH 5 Output Delay tODLY 0 7.4 I2C Interface 7.4.1 Overview ns 14 ATWILC1000-MR1100 provides an I2C bus slave that allows the host processor to read or write any register in the chip. ATWILC1000-MR1100 supports I2C bus Version 2.1 - 2000. The I2C interface, used primarily for debug, is a two-wire serial interface consisting of a serial data line (SDA, Pin 17) and a serial clock (SCL, Pin 18). It responds to the seven bit address value 0x60. The ATWILC1000MR1100 I2C interface can operate in standard mode (with data rates up to 100Kb/s) and fast mode (with data rates up to 400Kb/s). The I2C is a synchronous serial interface. The SDA line is a bidirectional signal and changes only while the SCL line is low, except for STOP, START, and RESTART conditions. The output drivers are open-drain to perform wire-AND functions on the bus. The maximum number of devices on the bus is limited by only the maximum capacitance specification of 400pF. Data is transmitted in byte packages. For specific information, refer to the Philips Specification entitled "The I2C -Bus Specification, Version 2.1". 7.4.2 I2C Timing The I2C timing is provided in Figure 7-4 and Table 7-5. Figure 7-4. I2C Timing Diagram tPR tSUDAT tHDDAT tBUF tSUSTO SDA tHL tLH tWL SCL tHDSTA tLH tHL tWH tPR fSCL 18 ATWILC1000-MR1100A [DATASHEET] 1 Atmel-42432A-WILC1000-MR1100PA-SmartConnect-Datasheet_032015 8 tPR tSUSTA Table 7-5. I2C Timing Parameters Parameter Symbol Min. Max. Unit SCL Clock Frequency fSCL 0 400 kHz SCL Low Pulse Width tWL 1.3 SCL High Pulse Width tWH 0.6 SCL, SDA Fall Time tHL 300 SCL, SDA Rise Time tLH 300 START Setup Time tSUSTA 0.6 START Hold Time tHDSTA 0.6 SDA Setup Time tSUDAT 100 SDA Hold Time tHDDAT 0 40 STOP Setup time tSUSTO 0.6 Bus Free Time Between STOP and START tBUF 1.3 Glitch Pulse Reject tPR 0 Remarks s ns This is dictated by external components s 7.5 ns Slave and Master Default Master Programming Option s 50 ns Wi-Fi/Bluetooth Coexistence ATWILC1000A supports 2- and 3-wire Wi-Fi/Bluetooth Coexistence signaling conforming to the IEEE 802.15.22003 standard, Part 15.2. The type of coexistence interface used (2- or 3-wire) is chosen to be compatible with the specific Bluetooth device used in a given application. Table 7-6 shows a usage example of the 2-wire interface using the GPIO3 and GPIO4 pins; 3-wire interface using the GPIO3, GPIO4, and GPIO5 pins; for more specific instructions on configuring Coexistence refer to ATWILC1000A Programming Guide. Table 7-6. Coexistence Pin Assignment Example Pin Name Function Target Pin # 2-wire 3-wire GPIO3 BT_Req BT is requesting to access the medium to transmit or receive. Goes high on TX or RX slot. 28 Used Used GPIO4 BT_Pri Priority of the BT packets in the requested slot. High to indicate high priority and low for normal. 29 Not Used Used GPIO5 WL_Act Device response to the BT request. High - BT_req is denied and BT slot blocked. 30 Used Used GPIO6 Ant_SW Direct control on Antenna (coex bypass). 31 Not Used Optional ATWILC1000-MR1100A [DATASHEET] Atmel-42432A-WILC1000-MR1100PA-SmartConnect-Datasheet_032015 19 1 9 8 Power Consumption 8.1 Description of Device States ATWILC1000A has several Devices States: 8.2 ON_Transmit - Device is actively transmitting an 802.11 signal ON_Receive - Device is actively receiving an 802.11 signal ON_Doze - Device is on but is neither transmitting nor receiving Power_Down - Device core supply off (Leakage) Controlling the Device States Table 8-1 shows how to switch between the device states using the following: CHIP_EN - Device pin (pin #23) used to enable DC/DC Converter VDDIO - I/O supply voltage from external supply Table 8-1. Device States Power Consumption1 Device State VDDIO IVBATT IVDDIO ON_Transmit VDDIO On 230mA @ 18dBm 29mA ON_Receive VDDIO On 68mA 29mA ON_Doze VDDIO On 280A <10A Power_Down GND On <0.5A <0.2A Note: 8.3 CHIP_EN 1. Conditions: VBAT @ 3.6V, I/O @ 1.8V. Restrictions for Power States When no power supplied to the device, i.e., the DC/DC Converter output and VDDIO are both off (at ground potential). In this case, a voltage cannot be applied to the device pins because each pin contains an ESD diode from the pin to supply. This diode will turn on when voltage higher than one diode-drop is supplied to the pin. If a voltage must be applied to the signal pads while the chip is in a low power state, the VDDIO supply must be on, so the SLEEP or Power_Down state must be used. Similarly, to prevent the pin-to-ground diode from turning on, do not apply a voltage that is more than one diode-drop below ground to any pin. 8.4 Power-Up/Down Sequence The power-up/down sequence for ATWILC1000A is shown in Figure 8-1. The timing parameters are provided in Table 8-2. 20 ATWILC1000-MR1100A [DATASHEET] 2 Atmel-42432A-WILC1000-MR1100PA-SmartConnect-Datasheet_032015 0 Figure 8-1. Power Up/Down Sequence VBATT tA t A' VDDIO tB t B' CHIP_EN tC t C' RESETN XO Clock Table 8-2. Parameter Power-Up/Down Sequence Timing Min. Max. Unit Description Notes tA 0 VBATT rise to VDDIO rise VBATT and VDDIO can rise simultaneously or can be tied together. VDDIO must not rise before VBATT. tB 0 VDDIO rise to CHIP_EN rise CHIP_EN must not rise before VDDIO. CHIP_EN must be driven high or low, not left floating. CHIP_EN rise to RESETN rise This delay is needed because XO clock must stabilize before RESETN removal. RESETN must be driven high or low, not left floating. tC 5 ms tA' 0 VDDIO fall to VBATT fall VBATT and VDDIO can fall simultaneously or can be tied together. VBATT must not fall before VDDIO. tB' 0 CHIP_EN fall to VDDIO fall VDDIO must not fall before CHIP_EN. CHIP_EN and RESETN can fall simultaneously. tC' 0 RESETN fall to VDDIO fall VDDIO must not fall before RESETN. RESETN and CHIP_EN can fall simultaneously. ATWILC1000-MR1100A [DATASHEET] Atmel-42432A-WILC1000-MR1100PA-SmartConnect-Datasheet_032015 21 2 1 8.5 Digital I/O Pin Behavior during Power-up Sequences Table 8-3 represents digital IO Pin states corresponding to device power modes. Table 8-3. Digital I/O Pin Behavior in Different Device States Device State VDDIO CHIP_EN RESETN Output Driver Input Driver Pull Up/Down Resistor (96) Power_Down: core supply off High Low Low Disabled (Hi-Z) Disabled Disabled Power-On Reset: core supply on, hard reset on High High Low Disabled (Hi-Z) Disabled Enabled Power-On Default: core supply on, device out of reset but not programmed yet High High High Disabled (Hi-Z) Disabled Enabled High Programmed by firmware for each pin: Enabled or Disabled Opposite of Output Driver state Programmed by firmware for each pin: Enabled or Disabled On_Doze/ On_Transmit/ On_Receive: core supply on, device programmed by firmware 22 High High ATWILC1000-MR1100A [DATASHEET] 2 Atmel-42432A-WILC1000-MR1100PA-SmartConnect-Datasheet_032015 2 9 Notes on Interfacing to the ATWILC1000-MR1100 9.1 Programmable Pull-up Resistors The ATWILC1000-MR1100 provides programmable pull-up resistors on various pins. The purpose of these resistors is to keep any unused input pins from floating which can cause excess current to flow through the input buffer from the VDDIO supply. Any unused module pin on the ATWILC1000-MR1100 should leave these pull-up resistors enabled so the pin will not float. The default state at power up is for the pull-up resistor to be enabled. However, any pin which is used should have the pull-up resistor disabled. The reason for this is that if any pins are driven to a low level while the ATWILC1000-MR1100 is in the low power sleep state, current will flow from the VDDIO supply through the pull-up resistors, increasing the current consumption of the module. Since the value of the pull-up resistor is approximately 100K, the current through any pull-up resistor that is being driven low will be VDDIO/100K. For VDDIO = 3.3V, the current through each pull-up resistor that is driven low would be approximately 3.3V/100K = 33A. Pins which are used and have had the programmable pull-up resistor disabled should always be actively driven to either a high or low level and not be allowed to float. See the ATWILC1000-MR1100 Programming Guide for information on enabling/disabling the programmable pull up resistors. 10 Recommended Footprint Figure 10-1. Footprint Drawing (unit = mm) ATWILC1000-MR1100A [DATASHEET] Atmel-42432A-WILC1000-MR1100PA-SmartConnect-Datasheet_032015 23 2 3 11 RF Performance Placement Guidelines It is critical to follow the recommendations listed below to achieve the best RF performance: 24 Module must be placed on main board - printed antenna area must overlap with the carrier board. The portion of the module containing the antenna should not stick out over the edge of the main board. The antenna is designed to work properly when it is sitting directly on top of a 1.5mm thick printed circuit board. If the module is placed at the edge of the main board, a minimum 22mm by 5mm area directly under the antenna must be clear of all metal on all layers of the board. "In-land" placement is acceptable; however deepness of keep-out area must grove to: module edge to main board edge plus 5mm. DO NOT PLACE MODULE IN THE MIDDLE OF THE MAIN BOARD OR FAR AWAY FROM THE MAIN BOARD EDGE. Keep away from antenna, as far as possible, large metal objects to avoid electromagnetic field blocking Do not enclose the antenna within a metal shield Keep any components which may radiate noise or signals within the 2.4GHz - 2.5GHz frequency band far away from the antenna or better yet, shield those components. Any noise radiated from the main board in this frequency band will degrade the sensitivity of the module. Contact Atmel for assistance if any other placement is required. ATWILC1000-MR1100A [DATASHEET] 2 Atmel-42432A-WILC1000-MR1100PA-SmartConnect-Datasheet_032015 4 12 Recommended Reflow Profile Refer to IPC/JEDEC standard. Peak temperature: <250C. Number of Times: Two times maximum. Figure 12-1. Typical Reflow Profile ATWILC1000-MR1100A [DATASHEET] Atmel-42432A-WILC1000-MR1100PA-SmartConnect-Datasheet_032015 25 2 5 13 Module Schematics Figure 13-1. 26 ATWILC1000-MR1100A Schematic ATWILC1000-MR1100A [DATASHEET] 2 Atmel-42432A-WILC1000-MR1100PA-SmartConnect-Datasheet_032015 6 14 Module Bill of Materials (BOM) Table 14-1. ATWILC1000-MR1100 BOM ATWILC1000-MR1100A [DATASHEET] Atmel-42432A-WILC1000-MR1100PA-SmartConnect-Datasheet_032015 27 2 7 15 Application Reference Design The ATWILC1000-MR1100A reference design schematic is shown in Figure 15-1. Figure 15-1. 28 WILC1000-MR1100A SDIO ATWILC1000-MR1100A [DATASHEET] 2 Atmel-42432A-WILC1000-MR1100PA-SmartConnect-Datasheet_032015 8 Figure 15-2. WILC1000-MR1100A SPI ATWILC1000-MR1100A [DATASHEET] Atmel-42432A-WILC1000-MR1100PA-SmartConnect-Datasheet_032015 29 2 9 16 Reference Documentation and Support 16.1 Reference Documents Atmel offers a set of collateral documentation to ease integration and device ramp. The following list of documents available on Atmel web or integrated into development tools. To enable fast development contact your local FAE or visit the http://www.atmel.com/. Title Content Datasheet This Document Design Files Package User Guide, Schematic, PCB layout, Gerber, BOM, and System notes on: RF/Radio Full Test Report, radiation pattern, design guidelines, temperature performance, ESD. Platform Getting Started Guide How to use package: Out of the Box starting guide, HW limitations and notes, SW Quick start guidelines. HW Design Guide Best practices and recommendations to design a board with the product. Including: Antenna Design for Wi-Fi (layout recommendations, types of antennas, impedance matching, using a power amplifier etc.), SPI/UART protocol between Wi-Fi SoC and the Host MCU. SW Design Guide Integration guide with clear description of: High level Arch, overview on how to write a networking application, list all API, parameters and structures. Features of the device, SPI/handshake protocol between device and host MCU, with flow/sequence/state diagram, timing. SW Programmer Guide Explain in details the flow chart and how to use each API to implement all generic use cases (e.g. start AP, start STA, provisioning, UDP, TCP, http, TLS, p2p, errors management, connection/transfer recovery mechanism/state diagram) - usage and sample App note For a complete listing of development-support tools and documentation, visit http://www.atmel.com/, or contact the nearest Atmel field representative. 30 ATWILC1000-MR1100A [DATASHEET] 3 Atmel-42432A-WILC1000-MR1100PA-SmartConnect-Datasheet_032015 0 17 Revision History Doc Rev. Date 42432A 03/2015 Comments Initial document release. ATWILC1000-MR1100A [DATASHEET] Atmel-42432A-WILC1000-MR1100PA-SmartConnect-Datasheet_032015 31 3 1 Atmel Corporation 1600 Technology Drive, San Jose, CA 95110 USA T: (+1)(408) 441.0311 F: (+1)(408) 436.4200 www.atmel.com (c) 2015 Atmel Corporation. / Rev.: Atmel-42432A-WILC1000-MR1100PA-SmartConnect-Datasheet_032015. 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