Telit Wireless Solutions SL869T3-I Specification sheet

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

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APPLICABILITY TABLE
PRODUCTS
SL869T3-I

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CONTENTS
APPLICABILITY TABLE 2
CONTENTS 3
1. INTRODUCTION 8
1.1. Scope 8
1.2. Audience 8
1.3. Contact Information, Support 8
1.4. Symbol Conventions 9
1.5. Related Documents 9
2. PRODUCT DESCRIPTION 10
2.1. Product Overview 10
2.2. Block Diagram 11
2.3. Module Photo 12
3. EVALUATION KIT (EVK) 13
4. PRODUCT FEATURES 14
4.1. GPS (L1 C/A) and NavIC (L5) Navigation 14
4.2. Quasi-Zenith Satellite System (QZSS) Support 14
4.3. Satellite Based Augmentation System (SBAS) 14
4.3.1. SBAS Corrections 14
4.4. Assisted GPS (ST-AGPS) 14
4.5. RAIM 15
4.6. Jamming Mitigation 15
4.7. Position Pinning (Stop Detection) 15
4.8. Elevation Mask Angle 15
4.9. Internal LNA 16
4.10. 1PPS 16
4.11. Antenna Enable 16
4.12. Antenna Sense 16
4.13. Power Management Modes 16
4.13.1. STANDBY Modes 17

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4.13.1.1. Commanded Standby Mode 17
4.13.1.2. Commanded Active Cyclic Standby Mode 17
4.13.1.3. Commanded Passive Cyclic Standby Mode 18
4.13.2. SLEEP Modes 18
4.13.2.1. SLEEP Mode (Vcc has not been applied) 18
4.13.2.2. DEEP SLEEP Mode (Vcc has been applied in the past, then removed) .......19
4.14. Serial I/O Ports 19
4.14.1. UART 19
4.14.2. I2C 19
5. PRODUCT PERFORMANCE 20
5.1. Horizontal Position Accuracy 20
5.2. Time to First Fix 20
5.3. Sensitivity 21
6. MESSAGE INTERFACE 22
6.1. NMEA Output Messages 22
6.1.1. NMEA Standard Messages 22
6.1.2. Proprietary Messages 23
6.2. NMEA Input Commands 23
6.2.1. Constellation Configuration 24
7. FLASH UPGRADABILITY 25
8. ELECTRICAL INTERFACE 26
8.1. SL869T3-I Pin-out Diagram 26
8.2. SL869T3-I Pin-out Table 26
8.3. DC Characteristics 28
8.4. Absolute Maximum Ratings 28
8.5. Power Supply 28
8.5.1. VCC 28
8.5.2. VBATT 29
8.5.3. DC Power Requirements 29
8.5.4. DC Power Consumption (Vcc) 30
8.5.5. DC Power Consumption –Low Power Modes (Vcc) 30

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8.5.6. DC Power Consumption –Low Power Modes (Vbatt) 31
8.6. Control and Status Signals 31
8.6.1. Startup Requirements 31
8.6.2. nRESET 31
8.6.3. Boot Select 31
8.6.4. Wakeup 32
8.6.5. 1PPS 32
8.7. Antenna Power and Status 32
8.7.1. External Active Antenna Voltage 32
8.7.2. Antenna Enable (output) 33
8.7.3. Antenna Sense (input) 33
8.8. I/O Port Operation 33
8.8.1. UART Port Operation 33
8.8.1.1. UART0 (TX & RX): Pins 20 & 21. 33
8.8.1.2. UART1 (UART1_TX & RX): Pins 6 & 5. 34
8.8.1.3. UART2 (UART2_TX &/RX): Pins 14 & 15. 34
8.8.2. I2C Port Operation 34
8.9. RF Interface 35
8.9.1. RF IN 35
8.9.2. Burnout Protection 35
8.9.3. Frequency Plan 35
8.10. Antenna Selection 35
9. RF FRONT END DESIGN 37
9.1. RF Signal Requirements 37
9.2. GNSS Antenna Polarization 38
9.3. Active versus Passive Antenna 39
9.4. GNSS Antenna Gain 39
9.5. System Noise Floor 40
9.6. PCB Stack and Trace Impedance 41
9.7. RF Trace Losses 41
9.8. RF Interference 41
9.9. Shielding 42

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9.10. Cellular Coexistence 42
9.11. Powering an External LNA (or Active Antenna) 42
10. REFERENCE DESIGNS 44
10.1. SL869T3-I Reference Design 44
10.2. SL869T3-I Reference Design with Antenna Enable and Antenna Sense
45
11. MECHANICAL DRAWING 47
12. PCB FOOTPRINT 48
13. PRODUCT PACKAGING AND HANDLING 49
13.1. Product Marking and Serialization 49
13.2. Product Packaging 50
13.3. Moisture Sensitivity 51
13.4. ESD Sensitivity 53
13.5. Reflow 53
13.6. Assembly Considerations 53
13.7. Washing Considerations 53
13.8. Safety 54
13.9. Disposal 54
14. ENVIRONMENTAL REQUIREMENTS 55
14.1. Operating Environmental Limits 55
14.2. Storage Environmental Limits 55
15. COMPLIANCES 56
15.1. ISO 9000 ACCREDITED 56
15.2. ROHS COMPLIANCE 56
15.3. AIS-140 COMPLIANCE 56
16. APPENDIX A: LEGACY VERSIONS 57
16.1. Sensitivity 57
16.2. DC Power Consumption (Vcc) 57
17. PRODUCT AND SAFETY INFORMATION 59
17.1. Copyrights and Other Notices 59

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17.1.1. Copyrights 59
17.1.2. Computer Software Copyrights 59
17.2. Usage and Disclosure Restrictions 60
17.2.1. License Agreements 60
17.2.2. Copyrighted Materials 60
17.2.3. High Risk Materials 60
17.2.4. Trademarks 61
17.2.5. Third Party Rights 61
17.2.6. Waiwer of Liability 61
17.3. Safety Recommendations 62
18. GLOSSARY 63
19. DOCUMENT HISTORY 67

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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.
1.3. Contact Information, Support
For general contact, technical support services, technical questions and report of
documentation errors contact Telit Technical Support at:
• TS[email protected]
• TS[email protected]
• TS[email protected]
• TS[email protected]
• TS[email protected]
Alternatively, use:
https://www.telit.com/contact-us
For detailed information about where you can buy the Telit modules or for
recommendations on accessories and components visit:
https://www.telit.com
Our aim is to make this guide as helpful as possible. Keep us informed of your comments
and suggestions for improvements.
Telit appreciates the user feedback on our information.

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1.4. Symbol Conventions
Danger: This information MUST be followed or catastrophic
equipment failure or personal injury may occur.
Warning: Alerts the user on important steps about the module
integration.
Note/Tip: Provides advice and suggestions that may be useful when
integrating the module.
Electro-static Discharge: Notifies the user to take proper grounding
precautions before handling the product.
Table 1-1: 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)
•T3 Antenna Sense Application Note
•T3 High Fix Rate Application Note
•V34 Software Authorized User Guide

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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.
Special Features
•By default, the NavIC (formerly IRNSS) L5 constellation is supported along with
GPS L1
•AIS-140 compliant
•Antenna on (output signal)
•Antenna sense (input signal)
2.1. Product Overview
•Complete GPS and NavIC receiver module including memory, TCXO, RTC, LNA,
SAW Filters, Diplexer, L5 RF chip, and DC blocking capacitor
•Based on the STMicroelectronics Teseo III engine with ARM946 CPU
•By default, constellations supported: GPS (L1 C/A) and NavIC (L5) are enabled
oGalileo (L1) may also be enabled if desired.
oAlso, GLONASS (L1) or Beidou (L1) may be enabled if NavIC is disabled.
•SBAS corrections (WAAS, EGNOS, MSAS, GAGAN) capable
•Assisted GPS (AGPS) Autonomous (ST-AGPS) support for extended ephemeris
•Differential GPS (DGPS) capable using the RTCM SC-104 protocol
•NMEA-0183 command input and data output
•Navigational fixes reported at One Hz
•3 UART ports (see I/O Ports)
•1 I2C port (see I/O Ports)
•1PPS output
•Supports active or passive antenna
•Antenna on (output) signal
•Antenna sense (input) signal
•Memory

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o256 Kbyte embedded SRAM
o16 Megabit built-in SQI flash
•Power management modes for extended battery life
•48 tracking channels + 2 fast acquisition channels
•Supported by evaluation kits
•-40°C to +85°C industrial temperature range
•Surface mountable by standard SMT equipment
•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.

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2.3. Module Photo
Figure 2-2 SL869T3-I Module Photo

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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)

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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.
4.2. Quasi-Zenith Satellite System (QZSS) Support
The satellites of the Japanese QZSS system provide continuous coverage over Japan
using a combination of inclined geosynchronous and geostationary satellites. QZSS
ranging is disabled by default but can be enabled by command. QZSS PRNs 198 and 199
are supported in firmware versions V34-0.0.4-NVC-4.5.12.4 and later.
4.3. Satellite Based Augmentation System (SBAS)
The receiver is capable of using SBAS (WAAS, EGNOS, MSAS, and GAGAN) satellites as a
source of differential corrections. These systems use geostationary satellites to transmit
regional corrections via a GNSS-compatible signal. SBAS is enabled by default but can
be disabled by command.
4.3.1. SBAS Corrections
The SBAS satellites transmit a set of differential corrections to their respective regions.
The use of SBAS corrections can improve positioning accuracy.
4.4. Assisted GPS (ST-AGPS)
A GNSS receiver requires ephemeris data to calculate the precise position in space of
each satellite to be used in the navigation solution. Since the satellites move at a speed
of 3874 km/s along their orbits and are subject to gravitational perturbations from all
masses in the solar system, this data must be both current and accurate. Each GPS
satellite transmits a complete set of its ephemeris coefficients (called the broadcast
ephemeris or BE) every 30 seconds. This is therefore the minimum time required for a
cold start Time to First Fix (TTFF). The BE data is usually refreshed every 2 hours.
The minimum cold start TTFF can be reduced from 30 seconds to just a few seconds by
implementing AGPS.

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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.
By default, ST-AGPS is disabled.
4.5. RAIM
By default, Receiver Autonomous Integrity Monitoring (RAIM), is enabled. RAIM
functionality can be described as an algorithm that determines the integrity of the GNSS
solution. The RAIM algorithm compares measurements for consistency by means of
“residuals”. A faulty satellite is usually the cause in cases where inconsistency is
detected. If this occurs the receiver will eliminate that satellite from the solution.
4.6. Jamming Mitigation
The Adaptive Notch Filter (ANF) facility reduces the receiver’s susceptibility to jamming
signals. The ANF is enabled for the GPS/GAL/QZSS RF path. The ANF is not available for
the L5 band (NavIC). It can be enabled for the GLONASS/Beidou RF path by command if
either constellation is selected, however it must be disabled when NavIC is selected.
4.7. Position Pinning (Stop Detection)
Position Pinning is an operating mode in which the receiver has detected that no
movement is occurring. The speed will continue to be reported but the course will be
reported as 0.0.
The navigation solution is updated every 40 seconds while the receiver is in the Position
Pinning mode.
This feature is useful for applications in which very low dynamics are not expected, the
classic example being an automotive application.
Position Pinning is enabled by default but can be disabled by command.
4.8. Elevation Mask Angle
The default elevation mask angle is 5°. It can be changed by command to 0°to 45°.

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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
3D). See section 8.6.5 1PPS .
4.11. Antenna Enable
The Antenna Enable output can be used to control an external power supply to an active
antenna (or external LNA). It will be high when the receiver is operating, or low when it is
in a low-power (standby) mode.
4.12. Antenna Sense
The Antenna Sense feature measures the current consumed by the external LNA or
active antenna and reports its status as NORMAL, SHORT, or OPEN in an NMEA
proprietary message.
If the Antenna Sense feature detects a SHORT condition, the Antenna Enable output will
be set low in order to protect the active antenna.
4.13. Power Management Modes
During normal operation, both Vcc and Vbatt are applied. The module is in a normal
operational state providing navigation data output and responding to command input.
The module provides two types of low-power operation -
•STANDBY Mode: Vcc and Vbatt are maintained. STANDBY is entered via command.
•SLEEP Mode: Vcc is not present on the module to enter SLEEP mode. Vbatt must
be maintained. This mode provides the maximum power savings.
In both cases Vbatt must be continuously applied to preserve memory contents.
Mode
Vcc
Vbatt
RFIC
Baseband
TCXO
LNA
Run
ON
ON
ON
ON
ON
ON
Commanded
Standby
ON
ON
Off
Off
Off
Off
Commanded
Active Cyclic
ON
ON
ON
Cycle
Cycle
Cycle

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Mode
Vcc
Vbatt
RFIC
Baseband
TCXO
LNA
Commanded
Passive Cyclic
ON
ON
Cycle
Cycle
Cycle
Cycle
Sleep
Off
ON
Off
Off
Off
Off
Deep Sleep
Off
ON
Off
Off
Off
Off
4.13.1. STANDBY Modes
In these modes, both Vcc and Vbatt are applied to the module. STANDBY modes are
entered via command.
There are three situations that can be commanded:
•STANDBY
•ACTIVE CYCLIC
•PASSIVE CYCLIC
In addition to the time expiration, STANDBY modes can also be exited by asserting a
signal input:
•nRESET: Resumes operation with a cold start (using assist data if available)
•WAKEUP: Resumes operation with a hot start (assuming that the required data is
available)
Not applicable for the active cyclic standby command where it has no effect.
4.13.1.1. Commanded Standby Mode
See Table 4-1 Power Management Modes for power distribution scheme.
Entry: Issue a FORCESTANDBY command to the receiver to enter the STANDBY mode for
a specified amount of time.
The module enters a low current state until the specified time expires.
Exit: Expiration of the specified time. STANDBY is also exited if nRESET or WAKEUP is
asserted.
4.13.1.2. Commanded Active Cyclic Standby Mode
See Table 4-1 Power Management Modes for power distribution scheme.
Table 4-1 Power Management Modes

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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.
Then the module awakens, performs a HOT start and any necessary constellation
housekeeping tasks, and then automatically re-enters the reduced current state.
Exit: This process is repeated until this mode is disabled by another command or nRESET
is asserted.
Asserting WAKEUP has no effect for this command.
4.13.1.3. Commanded Passive Cyclic Standby Mode
See Table 4-1 Power Management Modes for power distribution scheme.
Entry: Issue a LOWPOWERONOFF command to enter the Passive Cyclic STANDBY mode
for a specified amount of time. NMEA output is not transmitted, and NMEA commands
are not processed.
The module enters a low current state until the specified time expires.
Then, the module awakens, performs a HOT start (assuming that the required data is
available) and any necessary constellation housekeeping tasks and then automatically
re-enters the low current state.
Exit: This process is repeated until this mode is disabled by another command, asserting
nRESET, or asserting WAKEUP.
4.13.2. SLEEP Modes
Vcc is not present and Vbatt is maintained. These modes provide the maximum power
saving but require more time to restore normal operation.
See section 8.5.3 DC Power Requirements for power consumptions.
The module will not be operating, and it will not provide output nor respond to commands
when in the SLEEP mode. There are two possible situations, SLEEP and DEEP SLEEP.
4.13.2.1. SLEEP Mode (Vcc has not been applied)
Entry: Vbatt is applied, but Vcc has not yet been applied.
Exit: Apply Vcc.

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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.
4.14.1. UART
The UART ports can be used for sending data and receiving commands.
See section 8.8 I/O Port Operation for details.
4.14.2. I2C
By default, the I2C port is not assigned an I/O function.
See section 8.8 I/O Port Operation for details.

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5. PRODUCT PERFORMANCE
5.1. Horizontal Position Accuracy
Horizontal Position Accuracy
Constellation
Typical CEP (m)
GPS
2.3
NavIC only
2.8
Test Conditions: Open Sky, Full Power mode
Table 5-1 SL869T3-I Horizontal Position Accuracy
5.2. Time to First Fix
Time to First Fix
Constellation
Start Type
Typical TTFF (seconds)
GPS + NavIC
Hot
1.2
Warm
26
Cold
36
NavIC only
Hot
1.7
Warm
42
Cold
43
Test Conditions: Static scenario, -130 dBm, Full Power mode
Table 5-2 SL869T3-I Time to First Fix