u-blox M8 concurrent GNSS timing modules

1 NEO/LEA-M8T u- blox M8 concurrent GNSS timing modules Data sheet Abstract Technical data sheet describing the NEO/LEA-M8T modules with concurrent reception of GPS/QZSS, GLONASS, BeiDou, and Galileo. They provide optimized accuracy and availability with survey-in and single-satellite timing . The modules feature market leading acquisition and tracking sensitivity, minimized power consumption with low duty-cycle operation, and maximized reliability with integrity monitoring and alarms. UBX-15025193 - R05 NEO/LEA-M8T - Data sheet UBX-15025193 - R05 Document information Page 2 of 36 Production Information Document information Title NEO/LEA-M8T Subtitle u- blox M8 concurrent GNSS timing modules Document type Data sheet Document number UBX-15025193 Revision and date R05 2-Jun-2020 Document status Production Information Product status Corresponding content status In development / Prototype Objective specification Target values.

2 Revised and supplementary data will be published later. Engineering sample Advance information Data based on early testing. Revised and supplementary data will be published later. Initial production Early production information Data from product verification. Revised and supplementary data may be published later. Mass production / End of life Production information Document contains the final product specification. This document applies to the following products: Product name Type number ROM/FLASH version PCN reference LEA-M8T LEA-M8T-0-10 Flash FW TIM UBX-16004907 NEO-M8T NEO-M8T-0-11 Flash FW TIM UBX-20013367 LEA-M8T LEA-M8T-1-00 Flash FW TIM N/A u- blox or third parties may hold intellectual property rights in the products, names, logos and designs included in this document.

3 Copying, reproduction, modification or disclosure to third parties of this document or any part thereof is only permitted with the express written permission of u- blox . The information contained herein is provided as is and u- blox assumes no liability for its use. No warranty, either express or implied, is given, including but not limited to, with respect to the accuracy, correctness, reliability and fitness for a particular purpose of the information. This document may be revised by u- blox at any time without notice. For the most recent documents, visit Copyright u- blox AG.

4 NEO/LEA-M8T - Data sheet UBX-15025193 - R05 Contents Page 3 of 36 Production Information Contents 1 Functional description .. 6 Overview .. 6 Product features .. 6 Performance .. 7 Block diagram .. 8 Supported GNSS constellations .. 8 GPS .. 9 GLONASS .. 9 BeiDou .. 9 Galileo .. 9 Assisted GNSS (A-GNSS) .. 9 AssistNowTM Online .. 10 AssistNowTM Offline .. 10 AssistNowTM Autonomous .. 10 Augmentation systems .. 10 Satellite-based augmentation system (SBAS) .. 10 QZSS .. 10 IMES .. 11 Differential GPS (D-GPS).

5 11 Precision timing , raw data and low duty-cycle operation .. 11 Time mode .. 11 Timepulse and frequency outputs .. 12 Time mark .. 12 timing integrity and availability .. 12 Raw data .. 13 Low duty-cycle operation .. 13 TIMEPULSE .. 14 Odometer .. 14 Data logging .. 14 Geofencing .. 14 Message integrity protection .. 14 Spoofing detection .. 15 EXTINT: External interrupt .. 15 Power control .. 15 Aiding .. 15 Protocols and interfaces .. 15 Interfaces .. 15 UART .. 16 USB .. 16 SPI .. 16 Display data channel (DDC).

6 16 NEO/LEA-M8T - Data sheet UBX-15025193 - R05 Contents Page 4 of 36 Production Information Clock generation .. 16 Oscillators .. 16 Real-time clock (RTC) and hardware backup mode .. 16 Power management .. 16 Operating modes .. 17 Continuous mode .. 17 On/off interval power save mode .. 17 Antenna .. 18 Antenna type .. 18 Antenna supervision .. 18 2 Pin definition .. 19 NEO-M8T pin assignment .. 19 LEA-M8T pin assignment .. 20 3 Configuration management .. 22 Interface selection (D_SEL) .. 22 4 Electrical specification.

7 23 Absolute maximum rating .. 23 Operating conditions .. 24 Indicative current requirements .. 24 SPI timing diagrams .. 25 timing recommendations .. 25 DDC timing diagrams .. 25 5 Mechanical specifications .. 26 NEO-M8T .. 26 LEA-M8T .. 27 6 Reliability tests and approvals .. 28 Reliability tests .. 28 Approvals .. 28 7 Product handling and soldering .. 29 Packaging .. 29 Reels .. 29 NEO-M8T tapes .. 29 LEA-M8T tapes .. 30 Shipment, storage and handling .. 30 Moisture sensitivity levels .. 30 Reflow soldering.

8 30 ESD handling precautions .. 31 8 Default messages .. 32 9 Labeling and ordering information .. 33 NEO-M8T product labeling .. 33 LEA-M8T product labeling .. 33 Explanation of codes .. 34 NEO/LEA-M8T - Data sheet UBX-15025193 - R05 Contents Page 5 of 36 Production Information Ordering codes .. 34 NEO/LEA-M8T - Data sheet UBX-15025193 - R05 Functional description Page 6 of 36 Production Information 1 Functional description Overview The NEO-M8T and LEA-M8T concurrent GNSS modules deliver high integrity, precision timing in demanding applications world-wide.

9 Support for BeiDou, GLONASS and Galileo constellations in addition to GPS enables compliance with national requirements. Enhanced sensitivity and concurrent constellation reception extend coverage and integrity to challenging signal environments. Survey-in and fixed-position navigation reduce timing jitter, even at low signal levels, and enable synchronization to be maintained with as few as one single satellite in view. Support for on/off low duty cycle operation reduces power consumption for battery-powered applications.

10 U- blox timing products include timing integrity measures with receiver autonomous integrity monitoring (RAIM) and continuous phase uncertainty estimation. They feature high dynamic range radios with both analog and digital interference mitigation, supporting applications in wireless communications equipment. Sophisticated RF architecture and interference suppression ensure maximum performance even in GNSS-hostile environments. The LEA-M8T includes a SAW filter and antenna power supervision and is perfect for use with active antennas or antenna signal distribution systems.