Pin Assignment - Globalsat ER-332 User Manual

Pin Assignment

Pin
1
2
3
4
5
6
7
8
9
10
11
12
Pin Explanation
* VDC (DC power input): This is the main DC supply for a 3.8V ~ 6.5V 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 faster start-up offered by a hot or warm
start, a battery backup must be connected. To maximize battery lifetime, the battery voltage should be
between 2.5v and 3.6v.
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
TIMEMARK
GND
Page 5 of 14
ER-332
Description
Ground
Backup Battery
3.8V~5.5V DC Power Input
(Reserved)
Ground
Ground
(Reserved)
1PPS Time Mark Output
Ground
Specifications are subject to be changed without notice.
Version 1.3.1
Type
Input
Input
Input
Output
Input
Output