Telit Wireless Solutions SE868 Series Specification sheet

SE868Kx-Ax Family
Product User Guide
1VV0301201 Rev. 5 –2021-07-15
Telit Technical Documentation

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APPLICABILITY TABLE
PRODUCTS
SE868-A
SE868-AS
SE868K3-A
SE868K3-AL
SE868K7-A
SE868K7-AL

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CONTENTS
APPLICABILITY TABLE 2
CONTENTS 3
1. INTRODUCTION 8
Scope 8
Audience 8
Contact Information, Support 8
Symbol Conventions 9
Related Documents 9
Related Documents Requiring a Non-Disclosure Agreement 9
2. PRODUCT DESCRIPTION 10
Product Overview 10
SE868xx-A Product Naming 11
Product Variants 12
2.3.1. Multi-Constellation Modules (SE868-A and SE868K3-Ax)
Features 12
2.3.2. GPS-Only Modules (SE868-AS and SE868K7-Ax) Features 12
2.3.2.1. ROM Features (SE868-AS and SE868K7-Ax modules) 13
2.3.3. Related Products 13
Block Diagrams 14
2.4.1. Early Production 14
2.4.2. Current Production 15
Module Photos 16
3. EVALUATION BOARD (EVB) 18
4. PRODUCT FEATURES 19
Built-in Antenna 19
Multi-Constellation Navigation (SE868-A and SE868K3-Ax only) 19
Quasi-Zenith Satellite System (QZSS) 19
Satellite-Based Augmentation System (SBAS) 19
4.4.1. SBAS Corrections 19
Differential GPS (DGPS) 20

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Assisted GPS (AGPS) 20
4.6.1. Locally generated AGPS - Embedded Assist System (EASY) 20
4.6.2. Server-generated AGPS - Extended Prediction Orbit (EPO) 20
4.6.3. Host EPO 21
Elevation Mask Angle 21
Static Navigation 21
Jamming Rejection –Active Interference Cancellation (AIC)22
Internal LNA (SE868Kx-A/AL modules only) 23
10 Hz Navigation 23
1PPS 23
Serial I/O Ports 23
Power Management Modes 24
4.14.1. Full Power Continuous Mode 24
4.14.2. Backup Mode (Perpetual) (SE868-A and SE868K3-Ax only) 25
4.14.3. Standby Modes 25
4.14.4. GLP Mode (SE868-A and SE868K3-Ax only) 25
4.14.5. Periodic Modes (SE868-A and SE868K3-Ax only) 26
4.14.6. AlwaysLocate™ Modes (SE868-A and SE868K3-Ax only) 28
5. DATA RETENTION (SE868-A AND SE868K3-AX ONLY) 29
6. PRODUCT PERFORMANCE 30
Horizontal Position Accuracy 30
Time to First Fix 30
Sensitivity 31
Jamming Mitigation Performance Example 32
7. MESSAGE INTERFACE 33
NMEA Output Messages 33
7.1.1. Standard Messages 33
7.1.2. Proprietary Output Messages 34
NMEA Input Commands 34
7.2.1. NMEA Commands List 35
8. FLASH UPGRADABILITY (SE868-A AND SE868K3-AX ONLY)36

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9. ELECTRICAL INTERFACE 37
SE868-A Family Pinout Diagram 37
SE868-A Module Pinout Tables 38
9.2.1. SE868-A Pinout Table 38
9.2.2. SE868-AS Pinout Table 39
9.2.3. SE868K3-A Pinout Table 40
9.2.4. SE868K7-A Pinout Table 41
SE868-Ax to SE868Kx-Ax Comparison and Migration 42
9.3.1. SE868-A and SE868K3-Ax Pinout Comparison 43
9.3.2. SE868-AS and SE868K7-Ax Pinout Comparison 44
DC Power Supply 45
9.4.1. VCC 45
9.4.2. VBATT 45
9.4.3. DC Power Requirements 46
9.4.4. DC Power Consumption: SE868-A 46
9.4.5. DC Power Consumption: SE868-AS 47
9.4.6. DC Power Consumption: SE868K3-Ax 47
9.4.7. DC Power Consumption: SE868K7-Ax 48
Control and Status Signals 48
9.5.1. I/O Signal Levels 48
9.5.1.1. Logic Levels –Inputs 48
9.5.1.2. Logic Levels –Outputs 49
9.5.2. Control and Input Signals 49
9.5.2.1. RESET-N 49
9.5.2.2. FORCE_ON (SE868-A and SE868K3-Ax only) 49
9.5.3. Output Signals 50
9.5.3.1. 1PPS 50
Serial I/O Ports 51
Port Usage 51
9.7.1. Primary (Port 0) Usage 51
9.7.2. Secondary (Port 1) Usage 51
9.7.3. UART Port Operation 51
9.7.4. I2C Port Operation (MT3333-based modules only) 52

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9.7.5. SPI Port Operation (MT3333-based modules only) 53
10. RF FRONT-END DESIGN 54
RF Signal Requirements 54
GNSS Antenna (included in the module) 55
Ground Plane 57
RF Interference 58
Shielding 58
11. REFERENCE DESIGN 59
12. MECHANICAL DRAWINGS 60
13. PCB FOOTPRINT 61
14. PACKAGING AND HANDLING 62
Product Marking and Serialization 62
Product Packaging 63
Moisture Sensitivity 65
ESD Sensitivity 67
Assembly Considerations 67
Washing Considerations 67
Reflow 68
Safety 69
Disposal 69
15. ENVIRONMENTAL REQUIREMENTS 70
Operating Environmental Limits 70
Storage Environmental Limits 70
16. COMPLIANCES 71
EU (RED) Declarations of Conformity 72
17. PRODUCT AND SAFETY INFORMATION 78
Copyrights and Other Notices 78
17.1.1. Copyrights 78
17.1.2. Computer Software Copyrights 78
Usage and Disclosure Restrictions 79
17.2.1. License Agreements 79

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17.2.2. Copyrighted Materials 79
17.2.3. High Risk Materials 79
17.2.4. Trademarks 79
17.2.5. Third Party Rights 80
17.2.6. Waiver of Liability 80
Safety Recommendations 80
18. DOCUMENT HISTORY 82

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1. INTRODUCTION
Scope
The purpose of this document is to provide information regarding the function, features,
and usage of the Telit products listed in Applicability Table.
Please refer to 2. Product Description for details of the members of the product family.
Audience
This document is intended for Telit customers, especially system integrators, about to
implement their applications using the Telit SE868Kx-Ax family.
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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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: Symbol Conventions
All dates are in ISO 8601 format, that is YYYY-MM-DD.
Related Documents
•Datasheets
•Product User Guides
•EVK User Guides
•Software User Guides
•Application Notes
•TelitView installation and documentation
Related Documents Requiring a Non-Disclosure Agreement
•Authorized Software User Guides
•Product firmware

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2. PRODUCT DESCRIPTION
The SE868Kx-A GNSS family of GNSS receiver modules (with built-in antenna) provides
complete position, velocity, and time (PVT) engines featuring high performance, high
sensitivity, and low power consumption.
All modules compute a navigation solution using GPS signals. Multi-constellation
modules add GLONASS and Galileo signals to yield better coverage, greater accuracy,
and improved availability.
•Multi-constellation (MT3333): SE868-A and SE868K3-A/AL
•GPS-only (MT3337): SE868-AS and SE868K7-A/AL
Special features:
•These modules include a built-in 9 x 9 mm SMT patch antenna.
Product Overview
•Complete GNSS receiver module including memory, LNA, TCXO, and RTC plus a
built-in patch antenna
•Constellations:
oSE868-A and SE868K3-A: GPS (L1), Glonass (L1), and BeiDou B1with 99
search and 33 tracking channels. Galileo ready.
oSE868-AS and SE868K7-A: GPS(L1) and QZSS ranging with 66 search and
22 tracking channels
•SBAS corrections capable (WAAS, EGNOS, etc.) (SE868-A and SE868K3-Ax only)
•DGPS capable using the RTCM SC-104 protocol
•AGPS support for extended ephemeris using local or server-based solutions:
oLocal: Embedded Assist System (EASY) 1
oServer: Extended Prediction Orbit (EPO) 1
•Jamming Rejection: Active Interference Cancellation (AIC)
•NMEA command input and data output
•Configurable fix reporting - Default: 1Hz, Max: 10 Hz
•Two serial ports for input commands and output messages
oSE868-A and SE868K3-Ax: The secondary serial port is I2C, but is
configurable for UART via command
•1PPS output

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•SE868-A and SE868K3-Ax: 8 Megabit built-in flash memory
•SE868-AS and SE868K7-Ax: ROM memory
•Less than 100 mW total power consumption (Full Power mode –typical, GNSS)
•Power management modes for extended battery life
•Supported by evaluation kits
•-40°C to +85°C industrial temperature range
•11 x 11 x 6.1 mm (nominal) 32-pad LGA package.
•Low profile (-AL) module height is 4.1 mm.
•Surface mountable by standard SMT equipment
•RoHS compliant design
Note 1: Please refer to Section 4.6 Assisted GPS (AGPS).
SE868xx-A Product Naming
Note - Early production modules:
•The ”K x x” fields are not present,
•The “–A” was replaced by “-AS” on SE868-AS and SE868K7-Ax (ROM) GPS-only
modules
Figure 2-1 Product Naming
Figure 2: SE868xx-A Product Naming

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Product Variants
Module
Chipset
Constellations
Memory
Antenna
Notes
SE868-A
MT3333
Multi
Flash
High
Early production
SE868-AS
MT3337E
GPS only
ROM
High
Early production
SE868K3-A
MT3333
Multi
Flash
High
SE868K3-AL
MT3333
Multi
Flash
Low
SE868K7-A
MT3337E
GPS only
ROM
High
SE868K7-AL
MT3337E
GPS only
ROM
Low
Table 2: Product Variants
Note: Please refer to Section 9.3 SE868-Ax to SE868Kx-Ax
Comparison and Migration for detailed pinout differences.
2.3.1. Multi-Constellation Modules (SE868-A and SE868K3-Ax)
Features
•MediaTek MT3333 engine
•GPS, QZSS, and GLONASS satellite signals. Galileo ready
•SBAS satellite signals
•Flash memory with Upgradable firmware
•AGPS: Local (EASY) and server-based (EPO)
•Force-On pin
•I2C (default) on the 2nd port. May be configured for UART or SPI
Feature
SE868-A
SE868K3-A
SE868K3-AL
Additional LNA
No
Yes
Yes
Antenna Profile
High
High
Low
Table 3: Multi-constellation (SE868-A and SE868K3-A) Variants
2.3.2. GPS-Only Modules (SE868-AS and SE868K7-Ax) Features
•MediaTek MT3337 (early production) or MT3337E (enhanced) engine
•GPS and QZSS satellite signals
•ROM memory
•AGPS: Local (EASY) and server-based (EPO)

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oEASY requires MT3337E ROM.EASY data is stored in RTC RAM.
oEPO is host-based
•No Force-On pin
•Only UART on the 2nd port. I2C is not available.
Feature
SE868-AS
SE868K7-A
SE868K7-AL
GNSS chip
MT3337 or MT3337E
MT3337E
MT3337E
Antenna Profile
High
High
Low
AGPS (EASY)
MT3337E only
Table 4: GPS-only (SE868-AS and SE868K7-Ax) Variants
2.3.2.1. ROM Features (SE868-AS and SE868K7-Ax modules)
Feature
SE868-AS
(early production)
P/N SE868ASA210Rxxx
SE868-AS
P/N SE868ASA232Rxxx
SE868K7-Ax
ROM version
3337
3337E (enhanced)
3337E (enhanced)
EASY
No
Yes
Yes
SBAS
Yes
No
No
Always Locate
Yes
No
No
LOCUS
Yes
No
No
Table 5: ROM Features Changes
2.3.3. Related Products
The SE878Kx-Ax module is similar to the SE868Kx-Ax. Major differences are:
•Module size is 18 x 18 x 6.2 mm.
•The antenna is larger (17 x 17 mm)
•An RF switch and antenna input pin is provided to accept signals from an external
antenna.

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Block Diagrams
2.4.1. Early Production
Figure 3: SE868-Ax Block Diagram
Figure 4: SE868-ASx Block Diagram

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2.4.2. Current Production
Figure 5: SE868K3-Ax Block Diagram
Figure 6: SE868K7-Ax Block Diagram

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Module Photos
Figure 7: SE868 Family Photo
Note: All modules in the applicability table have a similar
appearance.

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The SE868Kx-AL (low profile) modules are 2 mm shorter that the SE868-AS shown
Figure 8: SE868xx-Ax Top View Photos

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3. EVALUATION BOARD (EVB)
The EVB contains the module mounted on a PC Board to facilitate development and
testing.
Please refer to the product Evaluation Board User Guide for detailed information.
Figure 9: SE868 Family Evaluation Board Photo

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4. PRODUCT FEATURES
Built-in Antenna
The module includes a built-in antenna for GPS, Galileo and GLONASS signals. See
section 10.2 GNSS Antenna (included in the module) for constellations supported by each
module.
Multi-Constellation Navigation (SE868-A and SE868K3-Ax only)
GPS and GLONASS constellations are enabled by default. BeiDou and Galileo are also
supported. If BeiDou is enabled, GLONASS and Galileo are disabled.
The user may enable or disable constellations via the $PMTK353 command.
Quasi-Zenith Satellite System (QZSS)
The satellites of the Japanese regional system are in a highly inclined, elliptical
geosynchronous orbit, allowing continuous high-elevation coverage over Japan using
only three satellites plus one geostationary satellite. PRNs 193, 194, and 195 are
supported. They provide ranging signals for augmentation of the GPS system
QZSS constellation usage is controlled by the $PMTK352 command and is disabled by
default. NMEA reporting for QZSS may be enabled/disabled by the $PMTK351 command.
Satellite-Based Augmentation System (SBAS)
SBAS is not supported on the current production SE868-AS and SE868K7-Ax modules
(with the enhanced ROM).
The receiver is capable of using SBAS satellites as a source of differential corrections.
These systems (WAAS, EGNOS, GAGAN and MSAS) use geostationary satellites to
transmit signals similar to those of GPS and in the same L1 band.
Enabling SBAS limits the maximum fix rate to 5 Hz. If disabled, the maximum is 10 Hz.
The module is enabled for SBAS by default, but can be disabled by command $PTMK313.
Either SBAS or DGPS corrections can be used and are set by the $PMTK301 command.
4.4.1. SBAS Corrections
The SBAS satellites transmit a set of differential corrections to their respective regions.
The use of SBAS corrections can improve positioning accuracy.

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Differential GPS (DGPS)
DGPS is a Ground-Based Augmentation System (GBAS) for reducing position errors by
applying corrections from a set of accurately-surveyed ground stations located over a
wide area. These reference stations measure the range to each satellite and compare it
to the known-good range. The differences can then be used to compute a set of
corrections which are transmitted, either by radio to a DGPS receiver or over the internet.
The DGPS receiver can then send them to the module 2nd serial port (RX2) using the
RTCM SC-104 Version 2.3 protocol message types 1, 2, 3, and 9.
These corrections can significantly improve the accuracy of the position reported to the
user.
The MT3333-based modules can accept either the RTCM SC-104 messages or SBAS
differential corrections via command $PMTK501.
Assisted GPS (AGPS)
Assisted GPS (or Aided GPS) is a method by which information from a source other than
broadcast GPS signals is used to improve (i.e. reduce) TTFF.
The necessary ephemeris data is calculated either by the receiver itself (locally-
generated ephemeris) or a server (server-generated ephemeris) and is then stored in the
module.
Please refer to Section 2.3 Product Variants for applicability.
4.6.1. Locally generated AGPS - Embedded Assist System (EASY)
Proprietary algorithms within the module perform GPS ephemeris prediction locally from
stored broadcast ephemeris data (received from tracked satellites). The algorithms
predict orbital parameters for up to three 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.
EASY is disabled if the fix rate is > 1 Hz.
EASY is on by default, but can be disabled by command PMTK869.
Please refer to Section 2.3 Product Variants for applicability.
4.6.2. Server-generated AGPS - Extended Prediction Orbit (EPO)
(SE868-A and SE868K3-Ax only)