SimCom SIM800H, Hardware Design Manual

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Smart Machine Smart Decision
SIM800H_Hardware_Design_V1.01
3
2013-08-20
Contents
Version History.......................................................................................................... 10
1. Introduction........................................................................................................ 11
2. SIM800H Overview ........................................................................................... 11
2.1. SIM800H Key Features ...................................................................................................... 11
2.2. Operating Mode ..................................................................................................................13
2.3. Functional Diagram.............................................................................................................14
3. Package Information ......................................................................................... 15
3.1. Pin out Diagram ..................................................................................................................15
3.2. Pin Description....................................................................................................................16
3.3. Package Dimensions ...........................................................................................................19
4. Application Interface......................................................................................... 21
4.1. Power Supply ......................................................................................................................21
4.1.1. Power supply pin................................................................................................................................. 22
4.1.2. Monitoring Power Supply ................................................................................................................... 23
4.2. Power on/down Scenarios...................................................................................................23
4.2.1. Power on SIM800H............................................................................................................................. 23
4.2.2. Power down SIM800H........................................................................................................................ 24
4.2.3. Reset Function..................................................................................................................................... 26
4.3. Power Saving Mode............................................................................................................27
4.3.1. Minimum Functionality Mode ............................................................................................................ 27
4.3.2. Sleep Mode (AT+CSCLK=1) ............................................................................................................. 28
4.3.3. Wake Up SIM800H from Sleep Mode (AT+CSCLK=1) ................................................................... 28
4.4. RTC Backup........................................................................................................................28
4.5. Serial Port and USB Interface.............................................................................................29
4.5.1 Function of Serial Port ........................................................................................................................ 30
4.5.2 Serial Interfaces................................................................................................................................... 30
4.5.3 Debug Interface................................................................................................................................... 33
4.5.4 Software Upgrade and Debug ............................................................................................................. 33
4.5.5 Multiplexing function of serial port .................................................................................................... 34
4.6. RI Behaviors .......................................................................................................................35
4.7. Audio Interfaces..................................................................................................................36
4.7.1. Speaker Interfaces Configuration........................................................................................................ 37
4.7.2. Microphone Interfaces Configuration ................................................................................................. 37
4.7.3. Audio Electronic Characteristic .......................................................................................................... 38
4.7.4. TDD .................................................................................................................................................... 38
4.8. SIM Card Interface..............................................................................................................38
4.8.1. SIM Card Application ......................................................................................................................... 39
4.8.2. SIM Card Design Guide...................................................................................................................... 40