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Interface Connection
* Pin-out of the 12-pin interface connector
Pin
Number
1
2
3
4
5
6
7
8
9
10
11
TIMEMARK
12
Interface description
* VDC (DC power input):
This is the main DC supply for a 3.8V ~ 5.5V power module board.
* VBAT (Backup battery):
This is the battery backup input that powers the SRAM and RTC when main
power is removed .Typical current draw is 10uA. Without an external backup battery,
the module/engine board will execute a cold star after every turn on. To achieve the
Name
GND
VBAT
VDC
PBRES
Push Button Reset Input (Active Low)
GPIO1
TXA
Serial Data Output A (GPS Data)
RXA
Serial Data Input A (Command)
GND
GND
SELECT
GND
Description
Ground
Backup Battery
3.8V~5.5V DC Power Input
(Reserved)
Ground
Ground
(Reserved)
1PPS Time Mark Output
Ground
Type
Input
Input
Input
Output
Input
Output
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