SIM345 EVB User Guide
SIM345-EVB_UGD_V1.02
15.02.2008
15
4.3 J103---GPIO
Figure 14: J3 Interface
SPI & I/O Interface Pin List:
Pin
Signal
I/O
Description
1
SPI_IO/ SDA
I/O
IIC interface
2 GPO2
O
General Purpose Output Port
3 SPI_CLK/
SCL
O
IIC interface
4
TEMP_BAT
I
ADC input for battery temperature
measurement
5 /RST
I
Reset module for emergency
6 GPIO0
I/O
General Purpose Input/Output Port
7
/INTR
I
External interrupt input
8
GPO0 / SPI_AUX
O
General Purpose Output Port
9
GPI
I
General Purpose Input
10
SPI_EN/ GPO3
O
General Purpose Output Port
11
ON/OFF
I
To switch on or off the module
12
VCC
O
Output digital power supply
13
AUXV0
I
Auxiliary ADC input
14
GPIO5
I/O
General Purpose Input/Output Port
