4D Systems, Australia


Ultra Miniature GPS Module
This product us RoHS compliant This product is PbFree This product is CE

Datasheet download Datasheets
Download Application Notes
Updated on 06 Feb 2010

Download GPS-U1 Data Sheet Rev. V0Ga
Updated on 20 Jun 2012

Software download Software and Utilities
Download GPS Software Tool
Updated on 22 Mar 2010


The GPS-U1 is a highly sensitive, low power and ultra-slim GPS module. It can support up to 66 channels of satellite searching. Even at high speed vehicle movement it has a special function to provide maximum update rate of 10Hz to provide the user with precise position fix and vehicle velocity. It delivers major advancements in GPS performances, accuracy, integration, power consumption and flexibility.

It is designed to be suitable for embedded system integration and simplifies the design procedure by module structure. The GPS-U1 module is the best choice for integrating GPS functionality into any embedded application.


  • Based on MediaTek MT3329 Single Chip Architecture.
  • State-of-the-art 66 channels GPS Engine.
  • Dimensions: 13mm x 10mm x 2.1mm
  • L1 Frequency, C/A code, 66 channels.
  • High Sensitivity : Up to -165dBm tracking, superior urban performance.
  • Position Accuracy : < 3m CEP (50%) without SA (horizontal).
  • Maximum update rate : up to 10Hz (optional by firmware).
  • Cold Start : under 35 seconds (Typical).
  • Warm Start : under 34 seconds (Typical).
  • Hot Start : under 1 second (Typical).
  • Low Power Consumption : 48mA during acquisition, 37mA during tracking.
  • Low shut-down current consumption : 20uA, typical.
  • DGPS(WAAS, EGNOS, MSAS) support (optional via firmware change).
  • UART interface, 4800 baud.
  • USB interface.
  • Supports NMEA0183 V3.01 data protocol.
  • Supports AGPS function (Offline mode : EPO valid up to 14 days).
  • RoHS compliant.

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