Smart Machine Smart Decision

SIM800C_Hardware_Design_V1.02

3

2015-4-27

Contents

Version History............................................................................................................ 8

1.

Introduction.......................................................................................................... 9

2.

SIM800C Overview ............................................................................................. 9

2.1.

SIM800C...............................................................................................................................9

2.2.

SIM800C Key Features.........................................................................................................9

2.3.

Operating Mode ..................................................................................................................11

2.4.

Functional Diagram.............................................................................................................12

3.

Package Information ......................................................................................... 13

3.1.

Pin Out Diagram .................................................................................................................13

3.2.

Pin Description....................................................................................................................13

3.3.

Package Dimensions ...........................................................................................................15

4.

Application Interface......................................................................................... 17

4.1.

Power Supply ......................................................................................................................17

4.1.1.

Power Supply Pin................................................................................................................................ 18

4.1.2.

Monitoring Power Supply ................................................................................................................... 19

4.2.

Power on/off SIM800C.......................................................................................................19

4.2.1.

Power on SIM800C............................................................................................................................. 19

4.2.2.

Power off SIM800C ............................................................................................................................ 20

4.3.

Power Saving Mode............................................................................................................22

4.3.1.

Minimum Functionality Mode ............................................................................................................ 22

4.3.2.

Sleep Mode 1 (AT+CSCLK=1) .......................................................................................................... 22

4.3.3.

Wake Up SIM800C from Sleep Mode 1............................................................................................. 23

4.3.4.

Sleep Mode 2 (AT+CSCLK=2) .......................................................................................................... 23

4.3.5.

Wake Up SIM800C from Sleep Mode 2............................................................................................. 23

4.4.

Power Saving Mode............................................................................................................23

4.5.

Serial Port and USB Interface.............................................................................................24

4.5.1

Function of Serial Port ........................................................................................................................ 25

4.5.2

Serial Interfaces................................................................................................................................... 25

4.5.3

Debug Interface................................................................................................................................... 27

4.5.4

Software Upgrade................................................................................................................................ 28

4.6.

UART1_RI Behaviors.........................................................................................................28

4.7.

Audio Interfaces..................................................................................................................29

4.7.1.

Speaker Interfaces Configuration........................................................................................................ 30

4.7.2.

Microphone Interfaces Configuration ................................................................................................. 30

4.7.3.

Audio Electronic Characteristic .......................................................................................................... 30

4.7.4.

TDD .................................................................................................................................................... 31

4.8.

SIM Card Interface..............................................................................................................31

4.8.1.

SIM Card Application ......................................................................................................................... 31