User's Manual

SIM840W EVB User Guide
SIM840W-EVB_UGD_V1.00 18 2011-06-22
J104 Interface Pin List:
Pin Signal I/O Description
1 KCOL0
2 KROW0 I
3 KCOL1
4 KROW1
5 KCOL2
6 KROW2
7 KCOL3
8 KROW3
9 KCOL4
10 KROW4
Keypad array interface
11 PWRKEY_OUT O POWER KEY OUT
12 PWRKEY I POWER KEY IN
13 GND POWER GND
14 VBAT POWER POWER