Shanghai Simcom Ltd. 0606020080117 Manual De Usuario

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