Telit Wireless Solutions SL869T3-I Product User Manual
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Telit Wireless Solutions SL869T3-I Product User Manual

Telit Wireless Solutions SL869T3-I Product User Manual

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SL869T3-I
Product User Guide
1VV0301546 Rev. 3 – 2021-03-31
Telit Technical Documentation

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Summary of Contents for Telit Wireless Solutions SL869T3-I

  • Page 1 SL869T3-I Product User Guide 1VV0301546 Rev. 3 – 2021-03-31 Telit Technical Documentation...

  • Page 2: Applicability Table

    SL869T3-I Product User Guide APPLICABILITY TABLE PRODUCTS SL869T3-I 1VV0301546 Rev. 3 Page 2 of 68 2021-03-31...

  • Page 3: Table Of Contents

    SL869T3-I Product User Guide CONTENTS APPLICABILITY TABLE CONTENTS INTRODUCTION 1.1. Scope 1.2. Audience 1.3. Contact Information, Support 1.4. Symbol Conventions 1.5. Related Documents PRODUCT DESCRIPTION 2.1. Product Overview 2.2. Block Diagram 2.3. Module Photo EVALUATION KIT (EVK) PRODUCT FEATURES 4.1.
  • Page 4 SL869T3-I Product User Guide 4.13.1.1. Commanded Standby Mode 4.13.1.2. Commanded Active Cyclic Standby Mode 4.13.1.3. Commanded Passive Cyclic Standby Mode 4.13.2. SLEEP Modes 4.13.2.1. SLEEP Mode (Vcc has not been applied) 4.13.2.2. DEEP SLEEP Mode (Vcc has been applied in the past, then removed) ..19 4.14.
  • Page 5 SL869T3-I Product User Guide 8.5.6. DC Power Consumption – Low Power Modes (Vbatt) 8.6. Control and Status Signals 8.6.1. Startup Requirements 8.6.2. nRESET 8.6.3. Boot Select 8.6.4. Wakeup 8.6.5. 1PPS 8.7. Antenna Power and Status 8.7.1. External Active Antenna Voltage 8.7.2.
  • Page 6 Cellular Coexistence 9.11. Powering an External LNA (or Active Antenna) REFERENCE DESIGNS 10.1. SL869T3-I Reference Design 10.2. SL869T3-I Reference Design with Antenna Enable and Antenna Sense MECHANICAL DRAWING PCB FOOTPRINT PRODUCT PACKAGING AND HANDLING 13.1. Product Marking and Serialization 13.2.
  • Page 7 SL869T3-I Product User Guide 17.1.1. Copyrights 17.1.2. Computer Software Copyrights 17.2. Usage and Disclosure Restrictions 17.2.1. License Agreements 17.2.2. Copyrighted Materials 17.2.3. High Risk Materials 17.2.4. Trademarks 17.2.5. Third Party Rights 17.2.6. Waiwer of Liability 17.3. Safety Recommendations GLOSSARY DOCUMENT HISTORY 1VV0301546 Rev.

  • Page 8: Introduction

    SL869T3-I Product User Guide 1. INTRODUCTION 1.1. Scope This document provides product information for the Telit SL869T3-I NavIC + GPS module. 1.2. Audience This document is intended for Telit customers, especially system integrators, about to implement their applications using the Telit SL869T3-I NavIC + GPS module.

  • Page 9: Symbol Conventions

    All dates are in ISO 8601 format, that is YYYY-MM-DD. 1.5. Related Documents • SL869T3-I Data Sheet (Not Subjected to NDA) • SL869 T3-I Evaluation Kit User Guide (Not Subjected to NDA) • V34 Software User Guide (Not Subjected to NDA) •...

  • Page 10: Product Description

    SL869T3-I Product User Guide 2. PRODUCT DESCRIPTION The SL869T3-I is a fully integrated GNSS module which receives GPS (L1) and NavIC (L5) navigation signals. It is based on the STMicroelectronics Teseo III GNSS engine with an ARM-9 core processor with flash memory, and includes a TCXO, RTC crystal, LNA, and SAW filters.

  • Page 11: Block Diagram

    • 24-pad 16.0 x 12.2 x 2.4 mm Industry Standard LCC castellated edge package • AIS-140 compliant • RoHS compliant 2.2. Block Diagram Figure 2-1 SL869T3-I Block Diagram Note/Tip: The Wakeup input is not available on part numbers SL869T3I001R001, SL869T3I001T001, SL869T3I001R002, and SL869T3I001T002. 1VV0301546 Rev. 3...

  • Page 12: Module Photo

    SL869T3-I Product User Guide 2.3. Module Photo Figure 2-2 SL869T3-I Module Photo 1VV0301546 Rev. 3 Page 12 of 68 2021-03-31...

  • Page 13: Evaluation Kit (Evk)

    SL869T3-I Product User Guide 3. EVALUATION KIT (EVK) The Evaluation Kit (EVK) contains the necessary items to assist the customer in evaluating the module for inclusion in a design. Figure 3-1 Evaluation Kit Figure 3-2 Evaluation Board (EVB) 1VV0301546 Rev. 3...

  • Page 14: Product Features

    SL869T3-I Product User Guide 4. PRODUCT FEATURES 4.1. GPS (L1 C/A) and NavIC (L5) Navigation By default, GPS (L1) and NavIC (L5) (formerly IRNSS) constellations are enabled. Galileo may also be enabled if desired. GLONASS (L1) or BeiDou (L1) may be enabled if NavIC is disabled.

  • Page 15: Raim

    SL869T3-I Product User Guide Proprietary algorithms within the module perform GPS ephemeris prediction locally from stored broadcast ephemeris data (which was received from tracked satellites). The algorithms predict orbital parameters for up to 5 days. The module must operate in Full Power mode for at least 5 minutes to collect ephemeris data from visible satellites, or 12 hours for the full constellation.

  • Page 16: Internal Lna

    SL869T3-I Product User Guide 4.9. Internal LNA The module includes a built-in LNA to improve sensitivity. 4.10. 1PPS The module provides a 1PPS output signal whenever the receiver has a valid fix (2D or 8.6.5 1PPS 3D). See section 4.11.

  • Page 17: Standby Modes

    SL869T3-I Product User Guide Mode Vbatt RFIC Baseband TCXO Commanded Cycle Cycle Cycle Cycle Passive Cyclic Sleep Deep Sleep Table 4-1 Power Management Modes 4.13.1. STANDBY Modes In these modes, both Vcc and Vbatt are applied to the module. STANDBY modes are entered via command.

  • Page 18: Commanded Passive Cyclic Standby Mode

    SL869T3-I Product User Guide Entry: Issue a LOWPOWERONOFF command to enter the Active Cyclic STANDBY mode for a specified amount of time. NMEA output is not transmitted, but NMEA commands are processed. The module enters a reduced current (higher than low current) state until the specified time expires.

  • Page 19: Deep Sleep Mode (Vcc Has Been Applied In The Past, Then Removed)

    SL869T3-I Product User Guide 4.13.2.2. DEEP SLEEP Mode (Vcc has been applied in the past, then removed) Entry: Vbatt is applied and Vcc has been previously applied to the module but is now removed. Exit: Apply Vcc. 4.14. Serial I/O Ports The module includes three serial ports and an I2C port.

  • Page 20: Product Performance

    Time to First Fix Constellation Start Type Typical TTFF (seconds) GPS + NavIC Warm Cold NavIC only Warm Cold Test Conditions: Static scenario, -130 dBm, Full Power mode Table 5-2 SL869T3-I Time to First Fix 1VV0301546 Rev. 3 Page 20 of 68 2021-03-31...

  • Page 21: Sensitivity

    SL869T3-I Product User Guide 5.3. Sensitivity Constellation(s) State Minimum Signal Level (dBm) Acquisition -146 GPS Only Navigation -162 Tracking -163 Acquisition -145 NavIC Only Navigation -161 Tracking -162 Acquisition -146 GPS + NavIC Navigation -162 Tracking -162 Acquisition -143 Glonass Only...

  • Page 22: Message Interface

    SL869T3-I Product User Guide 6. MESSAGE INTERFACE The primary UART port (TX/RX) supports full duplex communication between the receiver and the user. Its default function is NMEA output data and input commands. The default UART configuration is: 9600 bps, 8 data bits, no parity, and 1 stop bit.

  • Page 23: Proprietary Messages

    SL869T3-I Product User Guide The following talker IDs are used: Talker ID Constellation GNSS (multiple constellations) NavIC (formerly IRNSS) Galileo BeiDou GLONASS QZSS Table 6-3 NMEA Talker IDs 6.1.2. Proprietary Messages The receiver can issue several proprietary NMEA output messages ($PSTM) which report additional receiver data and status information.

  • Page 24: Constellation Configuration

    SL869T3-I Product User Guide 6.2.1. Constellation Configuration To enable the desired constellation(s), use the following table: Constellation Value GLONASS QZSS Galileo BeiDou NavIC 1024 Table 6-5 Constellation Values Add the values for the constellations to be enabled. Note/Tip: Not all combinations can be used internally. The SL869T3- I has two receive paths: •...

  • Page 25: Flash Upgradability

    SL869T3-I Product User Guide 7. FLASH UPGRADABILITY The firmware stored in the internal flash memory of the module may be upgraded via the main serial port (TX/RX). During normal operation, the BOOT pin should be left floating. This will ensure that the module executes code from its internal flash memory.

  • Page 26: Electrical Interface

    SL869T3-I Product User Guide 8. ELECTRICAL INTERFACE 8.1. SL869T3-I Pin-out Diagram Figure 8-1 SL869T3-I Pin-out Diagram Note/Tip: The WAKEUP input is not available on part numbers SL869T3I001R001, SL869T3I001T001, SL869T3I001R002 and SL869T3I001T002, in which case Pin 7 is Reserved. 8.2. SL869T3-I Pin-out Table...
  • Page 27 Hold for 1 second or until the start of the first output message. Pin 7 is Reserved and should not be connected on part numbers SL869T3I001R001, SL869T3I001T001, SL869T3I001R002 and SL869T3I001T002. Table 8-1 SL869T3-I Pin-out Table 1VV0301546 Rev. 3 Page 27 of 68...

  • Page 28: Dc Characteristics

    SL869T3-I Product User Guide 8.3. DC Characteristics Signals Description Units Low level output voltage, IOL 2mA High level output voltage, IOH 2mA 0.75 * VCC Low level input voltage -0.3 0.45 High level input voltage, IIH 2mA 0.7 * VCC Internal pull-up resistor equivalent kΩ...

  • Page 29: Vbatt

    SL869T3-I Product User Guide The external DC voltage supply (including regulators, capacitors, etc.) must be designed to ensure that stable power is maintained within the specifications listed below. The supply voltage must be within specification within 10 milliseconds of initial application.

  • Page 30: Dc Power Consumption (Vcc)

    SL869T3-I Product User Guide VBATT Vbatt should be less than Vcc when Vcc is supplied. Table 8-4 DC Supply Voltage 8.5.4. DC Power Consumption (Vcc) State & Constellation Units Acquisition GPS Only NavIC only GPS + NavIC Tracking GPS Only...

  • Page 31: Dc Power Consumption - Low Power Modes (Vbatt)

    SL869T3-I Product User Guide 8.5.6. DC Power Consumption – Low Power Modes (Vbatt) State Units Sleep mode μW Deep Sleep mode μW Operating temperature: 25°C. Vcc and Vbatt Supply voltages: 3.3 VDC nominal Table 8-7 Power Consumption (Vbatt) 8.6. Control and Status Signals 8.6.1.

  • Page 32: Wakeup

    SL869T3-I Product User Guide Warning: This pin should be brought at least to a test point or it may be impossible to update the firmware. 8.6.4. Wakeup When HIGH: This input signal will wake up a module that has been commanded into Standby mode.

  • Page 33: Antenna Enable (Output)

    SL869T3-I Product User Guide 8.7.2. Antenna Enable (output) The Antenna Enable output can be used to control an external power supply to an active antenna (or external LNA, etc.). It will be high when the receiver is operating, or low when it is in a low-power (standby) mode.

  • Page 34: Uart1 (Uart1_Tx & Rx): Pins 6

    SL869T3-I Product User Guide Warning: TX must be LOW or FLOATING at start-up and reset for normal operation. 8.8.1.2. UART1 (UART1_TX & RX): Pins 6 & 5. This port is not used by the default configuration of the firmware. 8.8.1.3. UART2 (UART2_TX &/RX): Pins 14 & 15.

  • Page 35: Rf Interface

    SL869T3-I Product User Guide 8.9. RF Interface 8.9.1. RF IN The RF input (RF-IN) pin accepts GNSS L1 band signals and NavIC L5 band signals. Signal level should be between -125 dBm and -165 dBm into 50 Ω impedance. DC voltage to the RF input is blocked by an internal capacitor.
  • Page 36 SL869T3-I Product User Guide If operation with GLONASS and/or BeiDou is anticipated, the antenna must be designed to work on those frequencies also. The module contains an integrated LNA and SAW filters. This allows it to work well with a passive or active GNSS antenna. If the antenna cannot be located near the module (e.g.

  • Page 37: Rf Front End Design

    The NavIC signal is defined by ISRO-IRNSS-ICD-SPS-1.1 dated August 2017. This document describes the NavIC constellation and its signal structure. The SL869T3-I receives and processes the NavIC L5 signal.

  • Page 38: Gnss Antenna Polarization

    SL869T3-I Product User Guide • Multipath interference (caused by signal reflection) • GNSS antenna characteristics • Signal path after the GNSS antenna The satellite transmit power is specified in reference documentation for each constellation, which is readily available online. The GNSS signal is relatively immune to attenuation from rainfall.

  • Page 39: Active Versus Passive Antenna

    SL869T3-I Product User Guide In a multipath situation, the direct (line of sight) signal would show a higher signal level with an RHCP antenna than a linearly polarized antenna because the interfering signal is rejected. However, in the case where the line of sight signal is obstructed, such as in an urban canyon environment, then the number of satellites in view could drop below the minimum needed to determine a 3D position.

  • Page 40: System Noise Floor

    SL869T3-I Product User Guide It is important to note that GNSS antenna gain is not the same as external LNA gain. Most antenna vendors will specify these numbers separately, but some combine them into a single number. Both numbers are significant when designing the front end of a GNSS receiver.

  • Page 41: Pcb Stack And Trace Impedance

    SL869T3-I Product User Guide 9.6. PCB Stack and Trace Impedance It is important to maintain a 50 Ω impedance on the RF path trace. Design software for calculating trace impedance can be found from multiple sources on the internet. The best method is to contact your PCB supplier and request a stackup for a 50 Ω...

  • Page 42: Shielding

    +33 dBm of power at the transmit frequency. Placing both the GNSS and cellular antennae on the same board will typically yield approximately 30 dB of isolation between the two antennae, which results in the SL869T3-I having no more than +5 dBm applied to its RF input pin.
  • Page 43 SL869T3-I Product User Guide 2. Use a quarter wave stub in place of the inductor. The length of the stub is designed to be exactly ¼ wavelength at L1, which has the effect of making an RF short at one end of the stub to appear as an RF open at the other end. The RF short is created by a high-quality RF capacitor operating at self-resonance.

  • Page 44: Reference Designs

    RF short at that frequency. V_ANT is the supply voltage for the external active antenna. Since the SL869T3-I has no pre-select filter, if used in conjunction with a co-located cellular module, an external L1-L5 double hump SAW filter is required to reduce the out of band energy that would otherwise be applied to the input of the module.

  • Page 45: Sl869T3-I Reference Design With Antenna Enable And Antenna Sense

    This circuit assumes an antenna supply voltage of 3.3 V and a fixed current draw. Figure 10-2 SL869T3-I Reference Design with Antenna enable & antenna sense Note/Tip: Pin 7 is RESERVED (no connection) on part numbers SL869T3I001R001, SL869T3I001T001, SL869T3I001R002 and SL869T3I001T002.
  • Page 46 RF short at that frequency. V_ANT is the supply voltage for the external active antenna. Since the SL869T3-I has no pre-select filter, if used in conjunction with a co-located cellular module, an external L1-L5 double hump SAW filter is required to reduce the out of band energy that would otherwise be applied to the input of the module.

  • Page 47: Mechanical Drawing

    SL869T3-I Product User Guide 11. MECHANICAL DRAWING Figure 11-1 SL869T3-I Mechanical Drawing Figure 11-2 3-D Mechanical Drawing 1VV0301546 Rev. 3 Page 47 of 68 2021-03-31...

  • Page 48: Pcb Footprint

    SL869T3-I Product User Guide 12. PCB FOOTPRINT Figure 12-1 SL869T3-I PCB Footprint The module uses advanced packaging with a base metal of copper and an Electroless Nickel Immersion Gold (ENIG) finish. 1VV0301546 Rev. 3 Page 48 of 68 2021-03-31...

  • Page 49: Product Packaging And Handling

    SL869T3-I Product User Guide 13. PRODUCT PACKAGING AND HANDLING 13.1. Product Marking and Serialization The module label has a 2D Barcode identifying the module and its serial number. Contact a Telit representative for information on specific module serial numbers. Figure 13-1 Product Label...

  • Page 50: Product Packaging

    SL869T3-I Product User Guide 13.2. Product Packaging Modules are shipped in Tape and Reel form on 24 mm reels with 1000 units per reel or Trays with 72 units. Each reel or tray is ‘dry’ packaged and vacuum sealed in a Moisture Barrier Bag (MBB) with two silica gel packs and a humidity indicator card, which is then placed in a carton.

  • Page 51: Moisture Sensitivity

    SL869T3-I Product User Guide Figure 13-4 Tray Packaging 13.3. Moisture Sensitivity Precautionary measures are required in handling, storing, and using these devices to avoid damage from moisture absorption. If localized heating is required to rework or repair the device, precautionary methods are required to avoid exposure to solder reflow temperatures that can result in performance degradation.
  • Page 52 SL869T3-I Product User Guide hermetic seal provided the factory conditions are less than 30°C and less than 60% and the humidity indicator card indicates less than 10% relative humidity. If the package has been opened or the humidity indicator card indicates above 10%, then the parts must be baked prior to reflow.

  • Page 53: Esd Sensitivity

    SL869T3-I Product User Guide 13.4. ESD Sensitivity The module contains class 1 devices and is classified as Electro-Static Discharge Sensitive (ESDS). Telit recommends the two basic principles of protecting ESD devices from damage: • Handle sensitive components only in an ESD Protected Area (EPA) under protected and controlled conditions;...

  • Page 54: Safety

    SL869T3-I Product User Guide cleaning equipment, the drying cycle may not be sufficient to thoroughly dry the module, so additional steps may need to be taken. Exact process details will need to be determined by the type of washing equipment as well as other components on the board to which the module is attached.

  • Page 55: Environmental Requirements

    SL869T3-I Product User Guide 14. ENVIRONMENTAL REQUIREMENTS 14.1. Operating Environmental Limits Operating Limits Temperature -40°C to +85°C Temperature ±1°C / minute maximum Rate of Change Up to 95% non-condensing or a wet bulb temperature Humidity of +35°C, whichever is less...

  • Page 56: Compliances

    SL869T3-I Product User Guide 15. COMPLIANCES 15.1. ISO 9000 ACCREDITED Manufactured in an ISO 9000: 2008 accredited facility. 15.2. ROHS COMPLIANCE Manufactured in compliance with Directive 2011/65/EU art. 16 on the restriction of the use of certain hazardous substances in electrical and electronic equipment (RoHS).

  • Page 57: Appendix A: Legacy Versions

    Tracking -161 Acquisition -137 Galileo Only Navigation -157 Tracking -158 Test Conditions: Static Scenario, Full Power mode Table 16-1 Legacy SL869T3-I Sensitivity 16.2. DC Power Consumption (Vcc) State & Constellation Units Acquisition GPS Only NavIC only GPS + NavIC Tracking 1VV0301546 Rev.
  • Page 58 SL869T3-I Product User Guide State & Constellation Units GPS Only NavIC only GPS + NavIC Operating temperature: 25°C. Vcc and Vbatt Supply voltages: 3.3 VDC nominal Full power mode. Table 16-2 Legacy Power Consumption 1VV0301546 Rev. 3 Page 58 of 68...

  • Page 59: Product And Safety Information

    SL869T3-I Product User Guide 17. PRODUCT AND SAFETY INFORMATION 17.1. Copyrights and Other Notices SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE Although reasonable efforts have been made to ensure the accuracy of this document, Telit assumes no liability resulting from any inaccuracies or omissions in this document, or from the use of the information contained herein.

  • Page 60: Usage And Disclosure Restrictions

    SL869T3-I Product User Guide computer programs, including – but not limited to - the exclusive right to copy or reproduce in any form the copyrighted products. Accordingly, any copyrighted computer programs contained in Telit’s products described in this instruction manual shall not be copied (reverse engineered) or reproduced in any manner without the express written permission of the copyright owner, being Telit or the Third Party software supplier.

  • Page 61: Trademarks

    SL869T3-I Product User Guide 17.2.4. Trademarks TELIT and the Stylized T-Logo are registered in the Trademark Office. All other product or service names are property of their respective owners. 17.2.5. Third Party Rights The software may include Third Party’s software Rights. In this case the user agrees to comply with all terms and conditions imposed in respect of such separate software rights.

  • Page 62: Safety Recommendations

    SL869T3-I Product User Guide 17.3. Safety Recommendations Make sure the use of this product is allowed in your country and in the environment required. The use of this product may be dangerous and has to be avoided in areas where: •...

  • Page 63: Glossary

    SL869T3-I Product User Guide 18. GLOSSARY AGPS Assisted (or Aided) GPS AGPS provides ephemeris data to the receiver to allow faster cold start times than would be possible using only broadcast data. This extended ephemeris data could be either server-generated or locally-generated.
  • Page 64 SL869T3-I Product User Guide (Global Navigation Satellite System) The Russian GNSS, which is operated by the Russian Aerospace Defense Forces GNSS Global Navigation Satellite System Generic term for a satellite-based navigation system with global coverage. The current systems are: GPS (US), GLONASS (Russia), BeiDou (China), and Galileo (Europe).
  • Page 65 SL869T3-I Product User Guide Restart A receiver beginning operation after being sent a restart command, generally used for testing rather than normal operation. A restart can also result from a power-up. See Cold Start, Warm Start, and Hot Start. Contrast with Reset and Reacquisition.
  • Page 66 SL869T3-I Product User Guide The North American SBAS system developed by the US FAA (Federal Aviation Administration). Warm Start A warm start occurs when a receiver begins operation with known (at least approximately) time and position, but unknown ephemeris data, typically after being sent a restart command.

  • Page 67: Document History

    SL869T3-I Product User Guide 19. DOCUMENT HISTORY Revision Date Changes Updated section 8.8.2 I2C Port Operation and section 2021-03-31 14.1 Operating Environmental Limits Clarified status of pins 3, 4, & 20 Updated performance test results Updated power consumption test results...

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