Data Sheet
ADH-tech 
GP3906-TLP Data Sheet    
Rev.A01                                                 
8  
Pin Configuration 
Pin Definition 
Pin 
Name 
I/O 
Description 
1 
DC_IN 
P 
3.3V ± 5% DC Power Supply Input 
2 
NC 
3 
GND 
I 
Ground 
4 
VBACKUP 
P 
RTC Backup Power Input 
5 
3D_FIX 
O 
3D_Fix Indicator 
6 
NC 
7 
NC 
8 
GND 
P 
Ground 
9 
Tx 
O 
Serial data Output 
10 
Rx 
I 
Serial Data Input 
11 
GND 
P 
Ground 
12 
1PPS 
O 
1 pulse-per-second  GPS time reference 
13 
RESET 
I 
System Reset. Low Active 
14 
NC 
15 
NC 
16 
NC 
17 
NC 
18 
NC 
19 
NC 
20 
GND 
P 
Ground 
Description of I/O Pin 
DC_IN (Pin1) 










