User's Manual

SIM900B EVB User Guide
SIM900B-EVB_UGD_V1.01 16 14.04.2010
4.3 J3---LCD & I/O
Figure 13： J3 Interface
LCD & I/O Interface Pin List:
Pin Signal I/O Description
1
DISP_DATA
I/O Display data line
2
DISP_D/C
O Display data or address select
3
DISP_CLK
O Display clock output
4
DISP_RST
O Display reset outplay
5
DISP_CS
O Display enable output
6
ADC0
I Adc input
7
GPIO0
I/O GPIO5 reserved for user
8
BUZZER
I/O Buzzer reserved for user
9
SIM_PRESENCE
I SIM Card Detection
10 NC