LTP5900-WHM SmartMesh WirelessHART Node Wireless Mote Module NETWORK FEATURES n n n n DESCRIPTION Complete Radio Transceiver, Embedded Processor, and Networking Software for Forming a Self-Healing Mesh Network Compliant to WirelessHART (IEC62591) Standard SmartMesh(R) Networks Incorporate: n Time Synchronized Network-Wide Scheduling n Per Transmission Frequency Hopping n Redundant Spatially Diverse Topologies n Network-Wide Reliability and Power Optimization n NIST Certified Security SmartMesh Networks Deliver: n >99.999% Network Reliability Achieved in the Most Challenging Dynamic RF Environments Often Found in Industrial Applications n Sub 50A Routing Nodes LTP5900-WHM FEATURES n n n Industry-Leading Low Power Radio Technology with: n 4.5mA to Receive a Packet n 5.4mA to Transmit at 0dBm n 9.7mA to Transmit at 8dBm RF Modular Certifications Include USA, Canada, and EU 24mm x 39mm, 22-Pin PCB Assembly with MMCX Antenna Connector SmartMesh WirelessHART wireless sensor networks are self managing, low power networks built from wireless nodes called motes. The LTPTM5900-WHM is the 22-pin WirelessHART mote product in the Eterna(R)* family of IEEE 802.15.4 printed circuit board assembly solutions, featuring a highly-integrated, low power radio design by Dust Networks(R) as well as an ARM Cortex-M3 32-bit microprocessor running Dust's embedded SmartMesh WirelessHART networking software. The LTP5900-WHM provides a forward compatible solution for customers using Dust Networks M2510 PCB module. With Dust's time-synchronized WirelessHART networks, all motes in the network may route, source or terminate data, while providing many years of battery powered operation. The SmartMesh WirelessHART software provided with the LTP5900-WHM is fully tested and validated, and is readily configured via a software Application Programming Interface (API). SmartMesh WirelessHART motes deliver a highly flexible network with proven reliability and low power performance in an easy-to-integrate platform. L, LT, LTC, LTM, Eterna, SmartMesh, Linear Technology, the Linear logo, Dust and Dust Networks are registered trademarks and LTP and the Dust Networks logo are trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 7375594, 7420980, 7529217, 7791419, 7881239, 7898322, 8222965. * Eterna is Dust Networks' low power radio SoC architecture. TYPICAL APPLICATION MANAGER LTP5900-WHM EXPANDED VIEW LTP5903-WHR MOTE ANTENNA MOTE IN+ SENSOR LTC(R)2379-18 SPI CONTROLLER UART UART ETHERNET IN- HOST APPLICATION MOTE MOTE MOTE 5900WHM TA01 5900whmfa For more information www.linear.com/LTP5900-WHM 1 LTP5900-WHM ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Notes 1, 2) TOP VIEW Supply Voltage (VDD to VSS).................... -0.3V to 4.20V Voltage on Any Digital I/O Pin.. VSS - 0.3V to VDD + 0.3V Input RF Level, Input Power at Antenna Connector.......... 10dBm Storage Temperature Range................... -55C to 105C VSWR of Antenna....................................................... 3:1 Operating Temperature Range..................-40C to 85C ANTENNA CONNECTOR 1 VSS 2 VDD 3 KEY (NO PIN) 4 RST 22 SPI_CS 21 KEY (NO PIN) 20 RX MISO 19 5 TX MOSI 18 6 RESERVED SCK 17 7 MT_RTS RESERVED 16 8 MT_CTS RESERVED 15 9 SP_CTS RESERVED 14 10 TIME RESERVED 13 11 MODE PIN B FLASH_P_EN 12 PC PACKAGE 22-LEAD (39mm x 24.4mm) PCB ORDER INFORMATION LEAD FREE FINISH PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE LTP5900IPC-WHMA#PBF LTP5900IPC-WHMA#PBF 22-Lead (39mm x 24.4mm) PCB -40C to 85C This product ships with the flash erased at the time of order. OEMs will need to program devices during development and manufacturing. For legacy part numbers and ordering information, go to: http://www.linear.com/product/LTP5900-WHM#orderinfo For more information on lead free part marking, go to: http://www.linear.com/leadfree/ ELECTRICAL CHARACTERISTICS PARAMETER Specifications are at TA = 25C, VDD = 3.6V unless otherwise noted. CONDITIONS MIN Including Noise and Load Regulation 2.75 TYP MAX UNITS 3.76 V 250 mVP-P DC Specifications Operational Supply Voltage Range (Between VDD and VSS) Voltage Supply Noise 50Hz to 2MHz Voltage Supervisor Trip Point Reset Trip Point 1.5 V Supply Current, Peak Searching for Network, Typically 150ms on and 2850ms in Doze (Note 2) 4.5 mA Supply Current, Peak During Power on Reset Maximum 750uS + VDD Rise Time from 1V to 1.9V 12 mA Supply Current, Peak Power Amplifier Enabled 9.7 TX, 5ms Maximum, 85C (Note 7) Peak Current Power Amplifier Disabled TX, 5ms Maximum TX, 5ms Maximum mA 12 5.4 mA mA 5900whmfa 2 For more information www.linear.com/LTP5900-WHM LTP5900-WHM ELECTRICAL CHARACTERISTICS PARAMETER CONDITIONS Maximum Allowed Temperature Ramp During Operation -40C to 85C Operating Relative humidity Non-Condensing Specifications are at TA = 25C, VDD = 3.6V unless otherwise noted. MIN TYP 10 MAX UNITS 8 C/min 90 % RH Current Consumption Supply Current, Transmit Power Amplifier Enabled Power Amplifier Disabled Supply Current, Receive 9.7 5.4 mA mA 4.5 mA Device Load Total Capacitance VDD to VSS (Note 7) 6 F Total Inductance VDD to VSS (Note 7) 4.9 H Specifications are at -40C to 85C, VDD = 3.6V unless otherwise noted. PARAMETER CONDITONS MIN TYP MAX UNITS Digital Signals VIL (Low Level Input Voltage) -0.3 0.6 V VIH (High Level Input Voltage) VDD - 0.3 VDD + 0.3 V 0.4 V VOL (Low Level Output Voltage) IOL(MAX) = 1.2mA VOH (High Level Output Voltage) IOH(MAX) = -1.8mA Input Leakage Current 25C VDD - 0.3 V 50 nA Radio Specifications Operating Frequency (Note 7) 2.4000 2.4835 Number of Channels 15 Channel Separation 5 Occupied Channel Bandwidth At -20dBc Frequency Accuracy (Note 7) Modulation IEEE 802.15.4 DSSS Raw Data Rate Receiver Operating Maximum Input Level Receiver Sensitivity Output Power, Conducted Power Amplifier Enabled Power Amplifier Disabled Range (Note 3) Power Amplifier Enabled: Indoor (Note 4) Outdoor (Note 4) Free space Power Amplifier Disabled: Indoor (Note 4) Outdoor (Note 4) Free space At 50% PER, VDD = 3V, 25C At 1% PER, VDD = 3V, 25C VDD = 3.6V, 25C VDD = 3.6V, 25C 25C, 50% RH, 2dBi Omni-Directional Antenna, 2m above ground MHz 2.7 -40 GHz MHz 40 ppm 250 kbps 0 dBm -95.0 -92.5 dBm dBm 8 0 dBm dBm 100 300 1200 meters meters meters 25 200 350 meters meters meters 5900whmfa For more information www.linear.com/LTP5900-WHM 3 LTP5900-WHM ANTENNA SPECIFICATIONS A MMCX-compatible male connector is provided on board for the antenna connection. The antenna must meet the following specifications. For a list of FCC-approved antennae, see the FCC-Approved Antennae section. PARAMETER VALUE Frequency Range 2.4GHz to 2.4835GHz Impedance 50 Maximum VSWR 3:1 Connector MMCX (Note 5) When the mote is placed inside an enclosure, the antenna should be mounted such that the radiating portion of the antenna protrudes from the enclosure. The antenna should be connected using a MMCX connector on a coaxial cable. For optimum performance, the antenna should be positioned vertically when installed. Note 1: The absolute maximum ratings shown should not be violated under any circumstances. Permanent damage to the device may be caused by exceeding one or more of these parameters. Note 2: ESD (electrostatic discharge) sensitive device. ESD protection devices are used extensively internal to the LTP5900. However, high electrostatic discharge can damage or degrade the device. Use proper ESD handling precautions. Note 3: The duration of doze time and "on" time is determined by the joinDutyCycle command in the mote serial API. Refer to the SmartMesh WirelessHART Mote Serial API Guide for details. Note 4: Actual RF range performance is subject to a number of installation-specific variables including, but not restricted to ambient temperature, relative humidity, presence of active interference sources, line-of-sight obstacles, near-presence of objects (for example, trees, walls, signage, and so on) that may induce multipath fading. As a result, actual performance varies for each instance. Note 5: 1 meter above ground. Note 6: The LTP5900-WHM can accommodate the following RF mating connectors: MMCX straight connector such as Johnson 135-3402-001, or equivalent; MMCX right angle connector such as Tyco 1408149-1, or equivalent. Note 7: Guaranteed by design. Not production tested. PIN FUNCTIONS VSS (Pin 1): Ground. I/O type = power. VDD (Pin 2): Power. I/O type = power. KEY (Pins 3, 20): No Pin. RX (Pin 4): UART RX. I/O type = 1. Direction = In. TX (Pin 5): UART TX. I/O type = 1. Direction = Out. Pin state in Deep Sleep = VDD. Deep Sleep is the lowest possible power state, with VDD and GND connected. The mote microprocessor and radio are inactive, and the mote must be awakened using the RST signal (for more information see the lowPowerSleep command in the WirelessHART Mote Serial API Guide). Reserved (Pins 6, 13, 14, 15, 16): No Connection. MT_RTS (Pin 7): UART Active Low Mote Ready to Send. I/O type = 1. Direction = Out. Pin state in Deep Sleep = VDD. Deep Sleep is the lowest possible power state, with VDD and GND connected. The mote microprocessor and radio are inactive, and the mote must be awakened using the RST signal (for more information see the lowPowerSleep command in the WirelessHART Mote Serial API Guide). MT_CTS (Pin 8): UART Active Low External Processor Clear to Send. I/O type = 1. Direction = Out. Pin state in Deep Sleep = VDD. Deep Sleep is the lowest possible power state, with VDD and GND connected. The mote microprocessor and radio are inactive, and the mote must be awakened using the RST signal (for more information see the lowPowerSleep command in the WirelessHART Mote Serial API Guide). SP_CTS (Pin 9): UART Active Low Serial Peripheral Clear to Send. I/O type = 1. Direction = In. TIME (Pin 10): Falling Edge Time Request. I/O type = 1. Direction = In. The TIME input pin is optional, and must either be driven or pulled up with a 5.1M resistor. Unless noted otherwise, all signals are active low. MODE_PIN_B (Pin 11): Selects Between Mode 1 and Mode 3 Operation. I/O type = 1. Direction = In. FLASH_P_EN (Pin 12): Active Low Flash Power Enable. I/O Type = 1. Direction = In. SCK (Pin 17): SPI Clock. I/O type = 1. Direction = In. 5900whmfa 4 For more information www.linear.com/LTP5900-WHM LTP5900-WHM PIN FUNCTIONS MOSI (Pin 18): SPI Master Out Slave In Serial Data. I/O type = 1. Direction = In. MISO (Pin 19): SPI Master In Slave Out Serial Data. I/O type = 1. Direction = Out. SPI_CS (Pin 21): Active Low Flash Chip Select. I/O type = 1. Direction = In. RST (Pin 22): Active Low Reset. I/O type = 1. Direction = In. The RST input pin is internally pulled up and connecting it is optional. When driven active low, the mote is hardware reset until the signal is de-asserted. Refer to the Power-On Sequence section for timing requirements on the RST pin. Note that the mote may also be reset using the mote serial command (see the SmartMesh WirelessHART Mote Serial API Guide). BLOCK DIAGRAM LTP5900-WHM NETWORK SYNCHRONIZED REAL TIME CLOCK TEMPERATURE COMPENSATION CRYSTAL OSCILLATORS WIRELESS POWER MANAGEMENT MODE B JOIN DUTY CYCLE BOOT CURRENT CONTROL SERIAL * PACKET QUEUE * UART I/O * CRC CFG AND MGMNT SERIAL DATA FLOW CONTROL NETWORK DATA TRANSMIT QUEUE RECEIVE QUEUE CHANNEL MANAGEMENT RF DESIGN IEEE 802.15.4 PHY POWER SUPPLY INFO INTELLIGENT NETWORKING PLATFORM RSSI VOLTAGE SUPERVISOR RST ENCRYPTION AND AUTHENTICATION GND IEEE 802.15.4E MAC VCC DRIFT COMPENSATION POWER AMPLIFIER BALUN ANTENNA MATCHING CIRCUITRY ANTENNA CONNECTOR 5900WHM BD 5900whmfa For more information www.linear.com/LTP5900-WHM 5 LTP5900-WHM MOTE BOOT UP POWER-ON SEQUENCE MOTE BOOT SEQUENCE The LTP5900-WHM has internal power-on reset circuits that ensure that the mote will properly boot. External resetting of the device is not required and not recommended. Following the negation of RST the mote completes its boot-up process by loading the application image and loading the operating parameters. The LTP5900-WHM lowers average current consumption by spreading the boot operation over time. This method supports systems with supplies having a maximum DC current less than the peak current required by the LTP5900-WHM. These systems must store enough charge to maintain the supply through the LTP5900-WHM's peak current consumption. For more information, contact your Linear Technology applications engineer. The maximum average current consumption for the LTP5900-WHM is defined by the maximum total charge Q consumed over a sliding window in time, t WINDOW. Table 1. Power-On Sequence PARAMETER COMMENTS MIN RST Pulse Width Reset Timing 125 TYP MAX UNITS s INRUSH CURRENT During power on, the mote can be modeled as a lumped impedance, as shown in Figure 1. With a source impedance (RSRC) of 1, the inrush current on the mote appears as shown in Figure 2. RSRC VSRC 1.4 0.4 CURRENT + 2.2F 2.4F tWINDOW MOTE EQUIVALENT SERIES RC CIRCUIT 5900WHM F01 Figure 1. LTP5900-WHM Equivalent Series RC Circuit TIME 2000 1750 POWER APPLIED Figure 3. Boot Sequence CURRENT (mA) 1500 1250 Table 2. Boot Sequence Parameters 1000 PARAMETER COMMENTS 750 t BOOT_DELAY The time between mote power greater than 1.9V and serial interface availability Q t WINDOW = 0.56s 500 250 0 5900WHM F03 0 10 20 30 TIME (s) 40 50 5900WHM F02 Figure 2. VDD Inrush Current (Power-On with Supply Impedance of 1) MIN TYP MAX UNITS 3 5 sec 200 C SERIAL INTERFACE BOOT UP LTP5900-WHM Serial Interface Boot Up Upon LTP5900-WHM power up, the MT_CTS line is high (inactive). The LTP5900-WHM serial interface boots within tBOOT_DELAY (see the Mote Boot Sequence section) of the mote powering up, at which time the LTP5900-WHM will transmit an HDLC boot event packet. Note that full handshake is in effect and is required to receive this packet. 5900whmfa 6 For more information www.linear.com/LTP5900-WHM LTP5900-WHM INTERFACES RESET PIN The RST input pin is internally pulled up. Connecting it is optional; however, in applications operating in the presence of EMI, RST should be actively driven high. When driven low, the mote hardware is in reset. Note that the mote may also be reset using the mote reset command (0x08). For requirements on reset timing, see the Mote Boot Up section. The LTP5900-WHM is a highly sophisticated device and Linear Technology recommends doing resets gracefully. If the device is in the network, a disconnect command (0x07) should be issued before the RST signal is asserted. This will result in the device rebooting and sending the boot event. The RST signal may then be asserted since the device is not in the network. Refer to the LTP5900-WHM Integration Guide for recommendations on how to connect to the RST pin, including voltage supervision. For detailed information about mote serial commands, refer to the SmartMesh WirelessHART Mote Serial API Guide. TIMESTAMPS The LTP5900-WHM has the ability to deliver network-wide synchronized timestamps. The LTP5900-WHM sends a time packet (as described in the SmartMesh WirelessHART Mote Serial API Guide) through its serial interface when one of the following occurs: * Mote receives an HDLC request to read time * The TIME signal is asserted The TIME pin is optional and has the advantage of being more accurate. The value of the timestamp is taken within tSTROBE approximately 1ms of receiving a TIME signal activation. If the HDLC request is used, due to packet processing the value of the timestamp may be captured several milliseconds after receipt of the packet. Refer to the SmartMesh WirelessHART Mote Serial API Guide for more information on timestamps. Table 3. TIME Timing Values VARIABLE DESCRIPTION MIN tSTROBE TIME Strobe Pulse Width 125 tRESPONSE Negation of Time Strobe to Start of Time Packet MAX UNITS s 100 ms SETTABLE I/O MODES The LTP5900-WHM offers a choice of two I/O modes. The functionality of the interface will be determined by the setting of Mode pin B whose pinout is described in the Pin Functions section. Table 4. Mode Pin Settings PIN MODE 1 MODE 3 MODE_PIN_B Externally Tied Low Externally Tied High All modes provide a means of transmitting and receiving serial data through the wireless network, as well as a command interface that provides synchronized time stamping, local configuration, and diagnostics. Mode 1 implements an 8-bit, no parity, 9600bps baud three-, four- or five-signal serial interface with bidirectional packet-level flow control operating at 9600bps. In certain OEM designs, one or two of the serial handshake signals may be optional for reduced pin count, as described in Table 5. Mode 3 implements an 8-bit, no parity, 115.2kbps baud five-signal serial interface with bidirectional packet-level flow control and byte-level flow control in the mote-tomicroprocessor direction only. TIME Mode 1: Three/Four/Five-Signal Serial Interface (9600bps) tRESPONSE TX TIME PACKET 5900WHM F04 Figure 4. Operation of TIME Pin The LTP5900-WHM mode 1 provides a three-, four-, or five-signal serial interface that is optimized for low powered embedded applications (and in certain designs 5900whmfa For more information www.linear.com/LTP5900-WHM 7 LTP5900-WHM INTERFACES may provide a low pin count serial solution). The mode 1 serial interface is comprised of the data pins (TX, RX) as well as handshake pins (MT_RTS, MT_CTS, SP_CTS) used for bidirectional flow control. The MT_RTS signal is ideal for designs where the microprocessor requires extra time to prepare to receive a packet (for example, the OEM microprocessor sleeps periodically, but requires a wakeup signal prior to receiving a packet). Refer to Table 5 for information on each handshake pin, including details on which pins are optional. Table 5. Mode 1 Pin Usage PIN I/O RX Input USAGE Serial data moving from the microprocessor to the mote. TX Output Serial data moving from the mote to the microprocessor. MT_RTS Output MT_RTS provides a mechanism to wake up the microprocessor in order to receive a packet. This signal is asserted when the mote is ready to send a serial packet. The signal stays low until the signal from the microprocessor is detected low by the mote (indicating readiness to receive a packet) or the t MT_RTS to SP_CTS timeout defined in the UART AC Timing section expires. If MT_RTS times out, it will de-assert , wait for t MT_RTS retry and then re-assert to attempt to send the serial packet again (see Figure 8). MT_RTS may be ignored by the microprocessor only if always stays low. SP_CTS Input SP_CTS provides packet-level flow control for packets transferred from the mote to the microprocessor. When the microprocessor is capable of receiving a packet it should assert the SP_CTS signal. SP_CTS may be externally tied low (reducing pin count) only if the microprocessor is always ready to receive a serial packet. MT_CTS Output MT_CTS provides packet-level flow control for packets transferred from the microprocessor to the mote that are destined for transfer over the network. Upon reset, following boot the mote will negate MT_CTS until the mote establishes a wireless network connection. During operation, the mote will negate MT_CTS if the mote does not have sufficient buffering to accept another packet. MT_CTS will also remain high if the mote is not part of the network. The microprocessor must check that the MT_CTS pin is low before initiating each serial packet for wireless transmission. Note that the mote may receive local serial packets at any time regardless of the MT_CTS state. (For a list of local commands, see the SmartMesh WirelessHART Mote Serial API Guide.) TIME Input The TIME pin can be used for triggering a timestamp packet. Its usage is optional. Table 6. Mode 3 Pin Usage PIN I/O RX Input USAGE Serial data moving from the microprocessor to the mote. TX Output Serial data moving from the mote to the microprocessor. MT_RTS Output MT_RTS provides a mechanism to wake up the microprocessor in order to receive a packet. This signal is asserted when the mote is ready to send a serial packet. The signal stays low until the SP_CTS signal from the microprocessor is detected low by the mote (indicating readiness to receive a packet) or the t MT_RTS to SP_CTS timeout defined in the UART AC Timing section expires. If MT_RTS times out, it will de-assert MT_RTS, wait for t MT_RTS retry and then re-assert MT_RTS to attempt to send the serial packet again (see Figure 8). SP_CTS Input SP_CTS provides byte-level flow control for packets transferred from the mote to the microprocessor. When the microprocessor is capable of receiving a packet it should assert the SP_CTS signal. In mode 3 byte-level flow control is achieved by having the microprocessor negate and then reassert the SP_CTS signal following the receipt of each byte. The mote will begin transmission of the next byte after detecting the reassertion of SP_CTS. MT_CTS Output MT_CTS provides packet-level flow control for packets transferred from the microprocessor to the mote that are destined for transfer over the network. Upon reset, following boot the mote will negate MT_CTS until the mote establishes a wireless network connection. During operation, the mote will negate MT_CTS if the mote does not have sufficient buffering to accept another packet. MT_CTS will also remain high if the mote is not part of the network. The microprocessor must check that the MT_CTS pin is low before initiating each serial packet for wireless transmission. Note that the mote may receive local serial packets at any time regardless of the MT_CTS state. For a list of local commands, see the SmartMesh WirelessHART Mote Serial API Guide. TIME Input The TIME pin can be used for triggering a timestamp packet. Its usage is optional. 5900whmfa 8 For more information www.linear.com/LTP5900-WHM LTP5900-WHM INTERFACES Mode 3: Five-Signal Serial Interface (115.2kbps) The LTP5900-WHM mode 3 provides a five-signal serial interface with byte-level flow control on transfers from the mote to the microprocessor. The mode 3 serial interface is comprised of the data pins (TX, RX) as well as handshake pins (MT_RTS, MT_CTS, SP_CTS) used for bidirectional flow control. The MT_RTS signal is ideal for designs where the microprocessor requires extra time to prepare to receive a packet (for example, the OEM microprocessor sleeps periodically, but requires a wake-up signal prior to receiving a packet. Refer to Table 6 for information on each handshake pin, including details on which pins are optional. UART AC Timing Table 7. UART Timing Values (Note 7) VARIABLE DESCRIPTION MIN MAX -2 2 tRX_BAUD Deviation from baud rate tRX_STOP Number of stop bits (9600bps) 1 bit period tRX_STOP Number of stop bits (115.2kbps) 1.5 bit period % tTX_BAUD Deviation from baud rate -1 tTX_STOP Number of stop bits 1 t SP_CTS to MT_RTS Assertion of SP_CTS to negation of MT_RTS 0 t MT_RTS to SP_CTS Assertion of MT_RTS to assertion of SP_CTS 500 ms t MT_RTS RETRY Time from a MT_RTS timeout to the retry. 500 ms t SP_CTS to TX Assertion of SP_CTS to start of byte 10 ms tTX to SP_CTS Start of byte to negation of SP_CTS t SP_CTS ACK PW Negation pulse width of SP_CTS 0 1 UNITS % bit period 10 1 ms bit period 500 ns tDIAG_ACK_TIMEOUT* The mote responds to all requests within this time. 125 ms tINTERBYTE_TIMEOUT Falling edge of TX to falling edge of SP_CTS (Mode 3 only) 7.1 ms tINTERPACKET_DELAY The sender of an HDLC packet must wait at least this amount of time before sending another packet 20 ms * For more information about supported requests and details on when tDIAG_ACK_TIMEOUT applies, refer to the SmartMesh WirelessHART Mote Serial API Guide. RST tBOOT_DELAY TX MT_RTS MT_CTS Hi-Z Hi-Z Hi-Z 5900WHM F05 Figure 5. Power-On Sequence. See the Mote Boot Sequence Section for the Value of tBOOT_DELAY 5900whmfa For more information www.linear.com/LTP5900-WHM 9 LTP5900-WHM INTERFACES tRX_BAUD RX tTX_STOP LSB MSB tTX_STOP tTX_BAUD TX STOP LSB MSB STOP 5900WHM F06 Figure 6. Byte-Level Timing tSP_CTS to MT_RTS MT_RTS tMT_RTS to SP_CTS SP_CTS tSP_CTS to TX t SP_CTS ACK PW tTX to SP_CTS TX 0x7E BYTE 0 0x7E 5900WHM F07 tINTERBYTE_TIMEOUT Figure 7. Flow Control Timing t MT_RTS RETRY MT_RTS t MT_RTS to SP_CTS SP_CTS 5900WHM F08 Figure 8. MT_RTS Timeout Behavior tINTERPACKET_DELAY PACKET N+1 PACKET N RX 0x7E* BYTE 0 BYTE N 0 x7E * THE FRAMING BYTE, 0 x7E, MUST NOT BE REPEATED AT THE START OF EACH PACKET SENT TO THE LTP5900. 0 x 7E* 5900WHM F09 Figure 9. Packet Timing 5900whmfa 10 For more information www.linear.com/LTP5900-WHM LTP5900-WHM INTERFACES MOTE SERIAL API SOFTWARE INSTALLATION The LTP5900-WHM offers a comprehensive application programming interface (API) that provides full programmatic access to control the mote, monitor its status (such as battery charge and network status), and provide access to the wireless mesh network. Refer to the SmartMesh WirelessHART Mote Serial API Guide for more information. Devices are supplied with the flash erased, requiring programming as part of the OEMs manufacturing procedure. The US department of commerce places restrictions on export of systems and software supporting encryption. All of Linear/Dust product software produced to date contains encryption and is subject to export regulations and may be provided only via MyLinear, https://www.linear.com/ mylinear. Customers purchasing SmartMesh products will receive a certificate containing a registration key and registration instructions with their order. After registering with the key, customers will be able to download SmartMesh software images from MyLinear. Once registered, customers will receive automated e-mail notifications as software updates are made available. TEMPERATURE SENSOR The LTP5900-WHM has an onboard temperature sensor. The temperature readings are available locally through the mote serial API and through the network at the manager via the XML API. For more information, refer to the SmartMesh WirelessHART Mote Serial API Guide, SmartMesh WirelessHART Manager API Guide. Table 8. Temperature Sensor PARAMETER MIN Sensor Input Range -40 Accuracy TYP MAX 85 7 UNITS C C Linear Technology offers the DC9010, in circuit programmer for the Eterna based products. While the DC9010, is provided as a finished product, the design documents are provided as a reference for customers. Once software has been loaded, devices can be configured via the API port. Configuration commands and settings are defined in SmartMesh WirelessHART Mote API Guide. 5900whmfa For more information www.linear.com/LTP5900-WHM 11 LTP5900-WHM APPLICATIONS INFORMATION REGULATORY AND STANDARDS COMPLIANCE Radio Certification The LTP5900 has been certified under a single modular certification, with the module name of ETERNA1. Following the regulatory requirements provided in the ETERNA1 User's Guide enables customers to ship products in the supported geographies, by simply completing an unintentional radiator scan of the finished product(s). The ETERNA1 User's Guide also provides the technical information needed to enable customers to further certify either the modules or products based upon the modules in geographies that have not or do not support modular certification. Compliance to Restriction of Hazardous Substances (RoHS) Restriction of Hazardous Substances 2 (RoHS 2) is a directive that places maximum concentration limits on the use of certain hazardous substances in electrical and electronic equipment. Linear Technology is committed to meeting the requirements of the European Community directive 2011/65/EU. This product has been specifically designed to utilize RoHS-compliant materials and to eliminate or reduce the use of restricted materials to comply with 2011/65/EU. The RoHS-compliant design features include: n RoHS-compliant solder for solder joints n RoHS-compliant base metal alloys n RoHS-compliant precious metal plating n munity directive 2011/65/EU. Depending on the type of solder paste chosen, a corresponding process change to optimize reflow temperatures may be required. SOLDERING INFORMATION The LTP5900 is suitable for both eutectic PbSn and RoHS6 reflow. The maximum reflow soldering temperature is 260C. A more detailed description of layout recommendations, assembly procedures and design considerations is included in the LTP5900 Hardware Integration Guide. INDUSTRIAL ENVIRONMENT OPERATION The LTP5900-WHM is designed to meet the specifications of harsh industrial environments which includes: * Shock and Vibration--The LTP5900-WHM complies with high vibration pipeline testing, as specified in IEC 61298-3. * Temperature Extremes--The LTP5900-WHM is designed for industrial storage and operational temperature range of -40C to 85C. ENCRYPTION CIPHER The LTP5900-WHM's 128-bit Advanced Encryption Standard (AES) cipher has been certified compliant to the United States National Institute of Standards and Technology (NIST) FIPS-197 (NIST certificate number, AES: 1437). To view the FIPS-197 validation list, go to: http://csrc.nist. gov/groups/STM/cavp/documents/aes/aesval.html RoHS-compliant cable assemblies and connector choices n Halogen-free mold compound n RoHS-compliant and 245 C re-flow compatible Note: Customers may elect to use certain types of leadfree solder alloys in accordance with the European Com- 5900whmfa 12 For more information www.linear.com/LTP5900-WHM LTP5900-WHM RELATED DOCUMENTATION * LTP5900-WHM Integration Guide * SmartMesh WirelessHART Mote Serial API Guide 5900whmfa For more information www.linear.com/LTP5900-WHM 13 LTP5900-WHM PACKAGE DESCRIPTION Please refer to http://www.linear.com/product/LTP5900-WHM#packaging for the most recent package drawings. PC Package 22-Lead (39mm x 24.4mm) PCB (Reference LTC DWG # 05-08-1001 Rev D) 5900whmfa 14 For more information www.linear.com/LTP5900-WHM LTP5900-WHM REVISION HISTORY REV DATE DESCRIPTION A 01/16 Added Software Installation section. PAGE NUMBER 11 5900whmfa Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection its circuits as described herein will not infringe on existing patent rights. For moreofinformation www.linear.com/LTP5900-WHM 15 LTP5900-WHM TYPICAL APPLICATION Mesh Network Thermistor RT = 5k * AI_0 / (2 * AI_1 - AI_0) T(C) = 1 / {A + B [Ln(RT)] + C[Ln(RT)]3} - 273.15 A = 1.032 * 10-3 B = 2.387 * 10-4 C = 1.580 * 10-7 TADIRAN TL-5903 Li-SoCI2 LTC5900-WHM ANTENNA ATMEL SAM4L2 VDD VDDIN 47F LT6654-2.048 VOUT 0.1F 0.1F GND2 VDDIO 4.7F VIN PA08 (GP08) 0.1F GND1 5k 0.1% 0.1F PA04 (AD0) FB 1000pF VDDANA 0.1F VSS TX MT_RTS MT_CTS RX SP_CTS PA15 (USART1_RXD) PA17 (EXTINT2) PA13 (GPO13) PA16 (USART1_TXD) PA18 (EXTINT3) 22H 4.7F VDDOUT VDDCORE 0.1F 10k 0.2C OMEGA 44006 5k 0.1% PA05 (AD1) 1000pF 5k 0.1% ADVREFP XOUT32 32.768kHz GND XIN32 5900WHM TA02 RELATED PARTS PART NUMBER DESCRIPTION COMMENTS LTP5903IPC-WHRB WirelessHART Embedded 250 Mote Manager Manages Networks of Up to 250 SmartMesh WirelessHART Nodes LTC5800-WHM WirelessHART Mote Ultralow Power Mote, 72-Lead 10mm x 10mm QFN LTC2379-18 18-Bit, 1.6Msps/1Msps/500ksps/250ksps Serial, Low Power ADC 2.5V Supply, Differential Input, 101.2dB SNR, 5V Input Range, DGC LT6654 Precision High Output Drive Low Noise Reference 1.6ppm Peak-to-Peak Noise (0.1Hz to 10Hz, Sink/Source 10mA, 5ppm/C Max Drift 5900whmfa 16 Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA For 95035-7417 more information www.linear.com/LTP5900-WHM (408) 432-1900 FAX: (408) 434-0507 www.linear.com/LTP5900-WHM LT 0116 REV A * PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 2014