Data Sheet

Smart Machine Smart Decision
SIM800F_Hardware Design_V1.00 3 2015-07-31
Contents
Contents.................................................................................................................................................................... 3
Table Index............................................................................................................................................................... 6
Figure Index ............................................................................................................................................................. 8
Version History...................................................................................................................................................... 10
1 Introduction......................................................................................................................................................11
2 SIM800F Overview..........................................................................................................................................11
2.1 SIM800F Key Features............................................................................................................................11
2.2 Operating Modes .................................................................................................................................... 13
2.3 SIM800F Functional Diagram................................................................................................................ 14
3 Package Information ...................................................................................................................................... 15
3.1 Pin out Diagram...................................................................................................................................... 15
3.2 Pin Description ....................................................................................................................................... 16
3.3 Package Dimensions............................................................................................................................... 18
4 Application Interface...................................................................................................................................... 20
4.1 Power Supply.......................................................................................................................................... 20
4.1.1 Power Supply Pins .............................................................................................................................. 22
4.1.2 Monitoring Power Supply ................................................................................................................... 22
4.2 Power on/off ........................................................................................................................................... 22
4.2.1 Power on SIM800F ............................................................................................................................. 22
4.2.2 Power off SIM800F............................................................................................................................. 23
4.2.3 Restart SIM800F by PWRKEY Pin .................................................................................................... 25
4.3 Reset Function........................................................................................................................................ 25
4.4 Power Saving Mode................................................................................................................................ 26
4.4.1 Minimum Functionality Mode ............................................................................................................ 26
4.4.2 Sleep Mode 1 (AT+CSCLK=1) .......................................................................................................... 27
4.4.3 Wake Up SIM800F from Sleep Mode 1 (AT+CSCLK=1) ................................................................. 27
4.4.4 Sleep Mode 2 (AT+CSCLK=2) .......................................................................................................... 27
4.4.5 Wake Up SIM800F from Sleep Mode 2 (AT+CSCLK=2) ................................................................. 27
4.5 RTC Backup ........................................................................................................................................... 28
4.6 Serial Port and USB Interface ................................................................................................................ 29
4.6.1 Function of Serial Port ........................................................................................................................ 29
4.6.2 Serial Port Connection ........................................................................................................................ 30
4.6.3 USB Interface...................................................................................................................................... 32
4.6.4 Software Upgrading and Debugging................................................................................................... 32
4.7 RI Behaviors...............................................................................................................
............................ 33
4.8 Audio Interfaces ..................................................................................................................................... 34
4.8.1 Speaker Reference Circuit................................................................................................................... 35
4.8.2 Microphone Reference Circuit ............................................................................................................ 35
4.8.3 Audio Electronic Characteristics......................................................................................................... 36
4.8.4 TDD .................................................................................................................................................... 36
4.9 SIM Card Interface ................................................................................................................................. 36
4.9.1 SIM Card Application ......................................................................................................................... 36