LEA-M8S - u-blox M8 standalone concurrent GNSS modules

The LEA-M8S module delivers concurrent GNSS location capability together with high-performance u-blox M8 positioning technology in the industry proven LEA form factor. 

The LEA-M8S module delivers concurrent GNSS location capability (up to 3 GNSS - GPS, GLONASS, Galileo & BeiDou) together with high-performance u-blox M8 positioning technology in the industry proven LEA form factor.

With its dual-frequency RF front-end, the u-blox M8 concurrent GNSS engine is able to intelligently use the highest number of visible satellites from two of the GNSS systems (GPS, GLONASS and BeiDou) for more reliable positioning.

The LEA-M8S features the lowest power GLONASS functionality in the industry and is designed for ERA-GLONASS. This 6th generation module in the LEA form factor allows simple migration from LEA-5 / LEA-6 GPS and LEA-6N GPS/GLONASS modules. Sophisticated RF-architecture and interference suppression ensure maximum performance even in GNSS-hostile environments.

The LEA-M8S combines a high level of robustness and integration capability with flexible connectivity options. The DDC (I²Ccompliant) interface provides connectivity and enables synergies with most u-blox cellular modules. For RF optimization, the LEA-M8S features a front-end SAW filter for increased jamming immunity.

Key Features:

  • Concurrent reception of GPS/QZSS, GLONASS, BeiDou
  • Combines low power consumption and high sensitivity
  • Industry leading -167 dBm navigation sensitivity
  • UART, USB and DDC (I2C compliant) interfaces
  • Simple integration with u-blox wireless modules
  • Easy migration from LEA-5 and LEA-6 modules

Need advice or more information?

Why not contact the Alpha Micro sales team?

Parameters Specifications
Receiver type

72-channel u-blox concurrent M8 engine

GPS/QZSS L1 C/A, GLONASS L10F , BeiDou B11, Galileo E1B/C


Nav. update rate

Single GNSS: up to 18 Hz

2 concurrent GNSS: up to 10 Hz


Position: 2.5 m CEP

SBAS: 2.0 m CEP


Cold starts: 26s

Aided starts: 2s

Reacquisition: 1s


Tracking & nav.: -167dBm

Cold starts: -148dBm

Hot starts: -157dBm


AssistNow Online

AssistNow Offline (up to 35 days)

AssistNow Autonomous( GPS only, up to 3 days)

OMA SUPL & 3GPP compliant



RTC crystal


Anti jamming Active CW detection and removal. Extra on-board SAW band pass filter
Memory On-board ROM
Supported antennas Active and passive
Raw data Code phase output
Odometer Integrated in navigation filter

Up to 4 circular areas

GPIO for waking up external CPU

Spoofing detection


Signal integrity Signature feature with SHA 256
¹ For default mode: GPS/SBAS/QZSS+GLONASS
Serial interfaces


1 USBV2.0 full speed 12 Mbit/s

1 DDC (I²C compliant)

Digital I/O

Configurable timepulse

2 EXTINT inputs for Wakeup

Time pulse Configurable: 0.25 Hz to 10 MHz
Protocols NMEA, UBX binary, RTCM
Electrical data
Supply voltage 2.7 to 3.6 V
Power consumption

22 mA @ 3 V (Continuous)

6.2 mA @ 3V (Power Save mode, 1 Hz)

Backup supply 1.4 to 3.6VDC
Environmental data, quality & reliability
Operating temperature -40°C to +85°C
Storage temperature -40°C to +85°C
RoHS compliant (lead free)
Qualification according to ISO 16750
Manufactured and fully tested in ISO/TS 16949 certified production sites
Uses u-blox M8 chips qualified according to AEC-Q100



28 pin LCC (Leadless Chip Carrier): 17.0 x 22.4 x 2.4 mm, 2.1 g

Part Number Description Pack Size
LEA-M8S-0 u-blox M8 GNSS Module, ROM, TCXO, SAW, 17.0 x 22.4 x 2.4 mm
Reel of 250
Support Products
EVK-M8N u-blox M8 GNSS evaluation kit, with TCXO, supports LEA-M8S

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