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LEA-6R module

u-blox 6 dead reckoning GPS module

LEA-6R module is an older generation product. For new designs see:
NEO-M8L module
u-blox M8 ADR modules with 3D sensors
NEO-M8U module
u-blox M8 UDR module including 3D inertial sensors
Small u-blox M8 UDR SiP


  • Automotive Dead Reckoning (ADR) technology:
    • 100% coverage, continuous positioning even in tunnels
    • 1 Hz combined DR+GPS navigation rate
    • Speedpulse sensor monitoring via I/O pin or as messages
    • Gyroscope/Temperature sensor monitoring
    • Automatic sensor calibration / temperature compensation
  • UART and USB interfaces
  • Integrated antenna supervisor
  • Extra front-end LNA
17 x 22.4 x 2.4 mm

Product variants


u-blox 6 GPS Module, DR hardware sensor
interface, TCXO, 17x22.4mm, 250 pcs/ree

Product variantsLEA-6R
GNSS features 
Microprocessor on board  
Standalone module open CPU
DDC (I2C compliant)1
Electrical data 
Minimum supply [V]2.70
Maximum supply [V]3.6
Environmental data, quality & reliability 
Maximum temperature [°C]85
Minimum temperature [°C]-40
Size [mm]17 x 22.4 x 2.4
Programmable flash memory
RTC crystal
Active antenna / LNA supply
Timepulse output
Ext. interrupt /wakeup

Product Summary

Data Sheet

Integration Manual

Interface Manual

Application Note

Release Notes


Driver Guide

Information Note

Conformity and Certification


White Paper

The LEA-6R provides 100 % coverage, combining the high performance u‑blox 6 positioning engine with u‑blox’ ADR Dead Reckoning technology. ADR supplements GPS satellite position information with heading and distance data provided by additional sensors. When GPS satellites are out of sight, location is extrapolated using distance and angle information from the gyroscope and speedpulse sensors. The speedpulse sensor signal can be received either as a digital tick signal or as messages via the serial interface. The gyroscope is monitored via an external ADC over the SPI interface. ADR enables accurate navigation even in locations with poor or absent GPS signals such as tunnels, indoor parking facilities and deep urban canyons. In addition, ADR effectively eliminates the impact of multipath effects in urban canyon environments. This makes the LEA-6R the ideal solution for applications requiring accurate, reliable positioning, all of the time. LEA-6R modules are manufactured in ISO/TS 16949 certified sites. Each module is tested and inspected during production. Qualification tests are performed as stipulated in the ISO16750 standard: “Road vehicles – Environmental conditions and testing for electrical and electronic equipment”.