LEA-M8T /NEO-M8T - u-blox M8 concurrent GNSS timing modules

u-blox NEO-M8T and LEA-M8T concurrent GNSS modules deliver high integrity, precision timing in demanding applications world-wide.

u-blox NEO-M8T and LEA-M8T concurrent GNSS modules deliver high integrity, precision timing in demanding applications world-wide. Support for BeiDou, GLONASS and Galileo constellations 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 low duty cycle operation reduces power consumption for battery-powered applications.

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.

The M8T timing modules are delivered in u-blox's established LEA and NEO form-factors with standard pin-out, allowing ready migration from previous product generations. u-blox timing products can make use of u-blox AssistNow or industry standard aiding data. This reduces the time to first fix and delivers exceptional acquisition sensitivity, even on first installation before precise location, time or frequency are known.

Key features:

  • Concurrent reception of GPS/QZSS, GLONASS, BeiDou, Galileo
  • Market leading acquisition and tracking sensitivity
  • Optimized accuracy and availability with Survey‑in and single‑satellite timing
  • Minimized power consumption with low duty‑cycle operation
  • Maximized reliability with integrity monitoring and alarms
  • Backward compatible with LEA‑5T, LEA‑6T and NEO‑6T

Need advice or more information?

Why not contact the Alpha Micro sales team?

Parameters Specifications
Receiver type

72-channel u-blox M8 engine



Galileo E1B/C

Nav. update rate

Concurrent GNSS: Up to 4Hz

Position accuracy
Parameter GPS & GLONASS GPS & BeiDou
Cold starts 25s 28s
Aided cold starts 2s 2s
Parameter GPS & GLONASS GPS & BeiDou
Tracking & nav. -167dBm -166dBm
Cold starts: Aided -157dBm -157dBm
Cold starts: Autonomous -148dBm -148dBm
Reacquisition -160dBm -160dBm

AssistNow GNSS Online

AssistNow GNSS Offline (up to 35 days)

AssistNow Autonomous(up to 6 days)

OMA SUPL & 3GPP compliant

Oscillator TCXO
RTC crystal Built in
Noise figure

On-chip LNA (LEA-M8T)

Extra LNA for passive antenna (NEO-M8T)

Anti jamming Active CW detection and removal. On-board SAW band pass filter.
Memory Internal SQI Flash for Firmware update
Supported antennas Active and passive

Features - Timing

Timing accuracy Clear sky: ≤ 20ns
Time-pulse frequency 0.25Hz - 10MHz
Time-pulse jitter ±11ns
Time-mark resolution 21ns
Integrity reports

RAIM active, phase uncertainty

time-pulse rate/duty-cycle

Features - Raw data and IMES
Measurement data GPS, GLONASS, BeiDou, SBAS and QZSS (Carrier phase; Code phase & pseudorange; Doppler)
Message data GPS, GLONASS, BeiDou, SBAS, QZSS L1S and IMES beacons (50/250 bps auto-baud)
Features - Power management
Power-save modes On/off low duty-cycle
Off control Hardware, message interface
On control

Hardware, wake-on UART activity,

Timer (using low power RTC)


Automatic on/off with configurable period (GPS-only)

Features - Antenna management
NEO-M8T External with logic-level antenna switching output, filtered continuous supply.
LEA-M8T Internal antenna bias supply with switching, over-current protection and alarm. Optional input for external open-circuit detection.
Serial interfaces SPI or UART and DDC (I2 C compliant) USB V2.0 full speed 12 Mbit/s
Protocols NMEA, UBX binary, RTCM
Time-pulse outputs 2
Time-mark inputs 2
Electrical data
Supply voltage 2.7 to 3.6VDC
Power consumption

15 µA (Battery backup, NEO-M8T))

30 µA (Software backup, NEO-M8T)

32 mA @ 3.0 V (Operational, NEO-M8T)

28 mA @ 3.0 V (Operational, LEA-M8T)

Backup supply 1.4 to 3.6VDC



NEO-M8T: 24 pin LCC (Leadless Chip Carrier): 12.2 x 16.0 x 2.4 mm, 1.6 g

LEA-M8T: 28 pin LCC (Leadless Chip Carrier): 17.0 x 22.4 x 2.4 mm, 2.6 g

Part Number Description Pack Size
LEA-M8T-0 u-blox M8 GNSS LCC module in LEA form factor, Timing, TCXO, flash, SAW
Reel of 250
NEO-M8T-0 u-blox M8 GNSS LCC module in NEO form factor, Timing, TCXO, flash, SAW, LNA Reel of 250
EVK-M8T-0 u-blox M8 Timing GNSS evaluation kit Each

EVK-8/EVK-M8 evaluation kits enable simple evaluation of the high performance u-blox M8 positioning technology. The built-in USB interface provides both power supply and high-speed data transfer, and eliminates the need for an external power supply.AlphaMicro_u-blox_EVK-M8N

u-blox 8/M8 evaluation kits are compact, and their user-friendly interface and power supply make them ideally suited for use in laboratories, vehicles and outdoor locations. Furthermore, they can be used with a PDA or a notebook PC, making them the perfect companion through all stages of design-in projects.


  • Easy to use
  • Extensive visualization and evaluation features
  • Supports AssistNow Online and AssistNow Offline A-GNSS services
  • 1 USB port, 1 UART port, 1 I2C/SPI port (switchable)
  • All ports accessible outside
  • Power supply and data transfer over USB (USB V2.0 compatible)

Kit includes:

  • Compact 105 x 64 x 26 mm EVK‑M8 or EVK‑8 unit
  • USB cable
  • EVK‑M8: Active GPS / GLONASS / BeiDou antenna
  • EVK‑8: Active GPS / GLONASS antenna
  • Quick Start reference card

u-center GPS/GNSS evaluation software

The EVK-M8 download includes u-center, which is an interactive tool for configuration, testing, visualization and data analysis of positioning chips and modules. u-center provides useful assistance during all phases of a system integration project.

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Last updated: 23 August 2016