Data Sheet

ADH-tech

GP3906-TLP Data Sheet

Rev.A01

3.3V ± 5% DC power supply input.

GND (Pin3, Pin8, Pin11,20)

The ground of the module.

VBACKUP (Pin4)

This is the backup power for GPS chipset to keep RTC running when main power

is removed. For normal operation, the input voltage must be kept from 2.0V to

4.3V.

3D_FIX (Pin5)

The fix flag output. If not used, keep this pin floating and do not put this pin in high

level when the module starting up.

 Before 2D Fix

The 3D_FIX should continuously output one-second high-level with

one-second low-level signal.

 After 2D or 3D Fix

The 3D_FIX should continuously output high-level signal.

Tx (Pin9)

This is the UART transmitter of the module. It outputs the GPS information for

application.

Rx (Pin10)

This is the UART receiver of the module. It is used to receive software commands

and firmware update.

high