Smart Machine Smart Decision
SIM800C_Hardware_Design_V1.00 3 2014-10-30
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............................................................................................................. 11
3. Package Information ......................................................................................... 13
3.1. Pin Out Diagram ................................................................................................................. 13
3.2. Pin Description .................................................................................................................... 14
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/down Scenarios ................................................................................................... 19
4.2.1. Power on SIM800C ............................................................................................................................. 19
4.2.2. Power down SIM800C ........................................................................................................................ 20
4.3. Power Saving Mode ............................................................................................................ 22
4.3.1. Minimum Functionality Mode ............................................................................................................ 22
4.3.2. Sleep Mode 1 (AT+CSCLK=1) .......................................................................................................... 23
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 ............................................................................................................ 24
4.5. Serial Port and USB Interface ............................................................................................. 25
4.5.1 Function of Serial Port ........................................................................................................................ 25
4.5.2 Serial Interfaces ................................................................................................................................... 26
4.5.3 Debug Interface ................................................................................................................................... 28
4.5.4 Software Upgrade ................................................................................................................................ 29
4.6. UART1_RI Behaviors ......................................................................................................... 29
4.7. Audio Interfaces .................................................................................................................. 31
4.7.1. Speaker Interfaces Configuration ........................................................................................................ 31
4.7.2. Microphone Interfaces Configuration ................................................................................................. 32
4.7.3. Audio Electronic Characteristic .......................................................................................................... 32
4.7.4. TDD .................................................................................................................................................... 33
4.8. SIM Card Interface.............................................................................................................. 33
4.8.1. SIM Card Application ......................................................................................................................... 33
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