Pin Assignment Of Sim900B - SimCom SIM900B Hardware Design

5.7

PIN Assignment of SIM900B

Table 26 : PIN assignment
PIN NO. PIN NAME
VBAT
1
VBAT
3
VBAT
5
VBAT
7
GND
9
GND
11
GND
13
VRTC
15
VDD_EXT
17
SIM_VDD
19
SIM_DATA
21
SIM_CLK
23
SIM_RST
25
GPIO5/KBC0
27
GPIO4/KBC1
29
GPIO3/KBC2
31
GPIO2/KBC3
33
GPIO1/KBC4
35
GPIO10/KBR0
37
GPIO9/KBR1
39
GPIO8/KBR2
41
GPIO7/KBR3
43
GPIO6/KBR4
45
DBG_RXD
47
DBG_TXD
49
AGND
51
MIC1P
53
MIC1N
55
MIC2P
57
MIC2N
59
SIM900B_Hardware Design_V2.01
I/O PIN NO.
I
2
I
4
I
6
I
8
10
12
14
I/O
16
O
18
O
20
I/O
22
O
24
O
26
I/O
28
I/O
30
I/O
32
I/O
34
I/O
36
I/O
38
I/O
40
I/O
42
I/O
44
I/O
46
I
48
O
50
52
I
54
I
56
I
58
I
60
PIN NAME
VBAT
VBAT
VBAT
VBAT
GND
GND
GND
SIM_PRESENCE
DISP_DATA
DISP_CLK
DISP_CS
DISP_D/C
DISP_RST
DCD
NETLIGHT
GPIO0
PWRKEY
BUZZER
DTR
RXD
TXD
RTS
CTS
RI
AGND
ADC0
SPK1P
SPK1N
SPK2P
SPK2N
45
Smart Machine Smart Decision
I/O
I
I
I
I
I
I/O
O
O
O
O
O
O
I/O
I
O
I
I
O
I
O
O
I
O
O
O
O
2012-05-07