Telit Wireless Solutions SE878K -A Series Specification sheet

SE878Kx-Ax Family
Product User Guide
1VV0301402 Rev. 8 –2021-07-21
Telit Technical Documentation

SE878Kx-Ax Family Product User Guide
1VV0301402 Rev. 8 Page 2of 73 2021-07-21
Not Subject to NDA
APPLICABILITY TABLE
PRODUCTS
SE878K3-A
SE878K7-A

SE878Kx-Ax Family Product User Guide
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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
SE878Kx-Ax Product Naming 11
Product Variants 12
2.3.1. Multi-Constellation Modules Features (MT3333-based) 12
2.3.2. GPS-Only Modules Features (MT3337E-based) 12
Related Products 12
Block Diagrams 13
Module Photos 14
3. EVALUATION BOARD (EVB) 15
4. PRODUCT FEATURES 16
Onboard (built-in) Antenna and RF switch (Built-in/External)16
Multi-Constellation Navigation (MT3333-based modules only)16
Quasi-Zenith Satellite System (QZSS) 16
Satellite-Based Augmentation System (SBAS) 16
4.4.1. SBAS Corrections 17
Differential GPS (DGPS) 17
Assisted GPS (AGPS) 17
4.6.1. Locally Generated AGPS - Embedded Assist System (EASY)17
4.6.2. Server-Generated AGPS - Extended Prediction Orbit (EPO) 18

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4.6.3. Host EPO 18
Elevation Mask Angle 18
Static Navigation 18
Jamming Rejection –Active Interference Cancellation (AIC)19
Internal LNA 19
10 Hz Navigation 20
1PPS 20
Serial I/O Ports 20
Power Management Modes 20
4.14.1. Full Power Continuous Mode 21
4.14.2. Backup Mode (Perpetual) (MT3333-based modules only) 21
4.14.3. Standby Modes 22
4.14.4. GLP Mode (MT3333-based modules only) 22
4.14.5. Periodic Modes (MT3333-based modules only) 23
4.14.6. AlwaysLocate™ Mode (MT3333-based modules only) 24
5. DATA RETENTION 26
6. PRODUCT PERFORMANCE 27
Horizontal Position Accuracy 27
Time to First Fix 27
Maximum RF Sensitivity 27
Jamming Mitigation Performance Example 28
7. MESSAGE INTERFACE 29
NMEA Output Messages 29
7.1.1. Standard Messages 29
7.1.2. Proprietary Output Messages 30
NMEA Input Commands 30
7.2.1. NMEA Commands List 30
8. FLASH UPGRADABILITY 32
9. ELECTRICAL INTERFACE 33
SE878Kx-Ax Family Pinout Diagram 33
SE878Kx-Ax Module Pinout Tables 34

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9.2.1. SE878K3-Ax Pinout Table 34
9.2.2. SE878K7-Ax Pinout Table 35
DC Power Supply 36
9.3.1. VCC 36
9.3.2. VBATT 36
9.3.3. DC Power Requirements 37
9.3.4. DC Power Consumption: SE878K3-Ax 37
9.3.5. DC Power Consumption: SE878K7-Ax 38
Control and Status Signals 38
9.4.1. I/O Signal Levels 38
9.4.2. Logic Levels –Inputs 38
9.4.3. Logic Levels –Outputs 39
9.4.4. Control and Input Signals 39
9.4.4.1. nRESET 39
9.4.4.2. FORCE_ON (MT3333-based modules only) 39
9.4.4.3. ANT_SEL 40
9.4.4.4. ANT_OPEN and nANT_SHORTED (SE878K3-Ax only) 40
9.4.5. Output Signals 40
9.4.5.1. 1PPS 40
I/O Ports 41
9.5.1. Port Usage 41
9.5.1.1. Primary (Port 0) Usage 41
9.5.1.2. Secondary (Port 1) Usage 42
9.5.2. UART Port Operation 42
9.5.3. SPI Port Operation (MT3333-based modules only) 42
9.5.4. I2C Port Operation (MT3333-based modules only) 43
10. RF FRONT-END DESIGN 45
RF Signal Requirements 45
External GNSS Antenna 46
Onboard GNSS Antenna (included in the module) 47
Ground Plane 47
System Noise Floor 48

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RF Interference 49
Shielding 49
11. REFERENCE DESIGN 50
12. MECHANICAL DRAWING 51
13. PCB FOOTPRINT 52
14. PACKAGING AND HANDLING 53
Product Marking and Serialization 53
Product Packaging 54
Moisture Sensitivity 55
ESD Sensitivity 57
Assembly Considerations 57
Washing Considerations 57
Reflow 58
Safety 59
Disposal 59
15. ENVIRONMENTAL REQUIREMENTS 60
Operating Environmental Limits 60
Storage Environmental Limits 60
16. COMPLIANCES 61
CE Declarations of Conformity 62
17. PRODUCT AND SAFETY INFORMATION 64
Copyrights and Other Notices 64
17.1.1. Copyrights 64
17.1.2. Computer Software Copyrights 64
Usage and Disclosure Restrictions 65
17.2.1. License Agreements 65
17.2.2. Copyrighted Materials 65
17.2.3. High Risk Materials 65
17.2.4. Trademarks 66
17.2.5. Third Party Rights 66

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17.2.6. Waiver of Liability 66
Safety Recommendations 67
18. GLOSSARY AND ACRONYMS 68
19. DOCUMENT HISTORY 72

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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.
For details of the members of the product family refer to chapter 2. Product Description.
Audience
This document is intended for Telit customers, especially system integrators, about to
implement their applications using the Telit SE878Kx-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 SE878Kx-Ax GNSS antenna module family provides complete multi-constellation
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): SE878K3-A
•GPS-only (MT3337): SE878K7-A
Special features
•Built-in SMT 17 x 17 mm patch antenna
•Antenna switch to allow an external antenna to be selected for RF input
Product Overview
•Complete GNSS receiver module including memory, LNA, TCXO, and RTC plus a
built-in patch antenna and an RF input switch for an external antenna
•MT3333-based: GPS L1 C/A, Glonass L1, BeiDou B1, and QZSS with 99 search and
33 tracking channels. Galileo ready.
•MT3337-based: GPS(L1) and QZSS ranging with 66 search and 22 tracking
channels
•MT3333-based: SBAS corrections capable (WAAS, EGNOS, MSAS, GAGAN)
•DGPS capable using the RTCM SC-104 protocol
•AGPS support for extended ephemeris using local or server-based solutions:
oLocal: Embedded Assist System (EASY)
oServer: Extended Prediction Orbit (EPO)
•Jamming Rejection: Active Interference Cancellation (AIC)
•1PPS output
•Fix reporting at 1 Hz (default). Maximum: 10Hz
•NMEA command input and data output
•Two serial ports for input commands and output messages: