Data Sheet

Smart Machine Smart Decision
SIM800F_Hardware Design_V1.00 4 2015-07-31
4.9.2 SIM Card Circuit Design Guide.......................................................................................................... 38
4.9.3 Design Considerations for SIM Card Holder...................................................................................... 38
4.10 DISP Interface ........................................................................................................................................ 39
4.11 Keypad Interface .................................................................................................................................... 40
4.12 GPIO....................................................................................................................................................... 41
4.12.1 RF_SYNC/JD .................................................................................................................................. 42
4.12.2 UART2_RXD/TXD......................................................................................................................... 42
4.13 I2C BUS ................................................................................................................................................. 42
4.14 ADC........................................................................................................................................................ 43
4.15 Network Status Indication ...................................................................................................................... 44
4.16 Power On Status Indication .................................................................................................................... 44
4.17 PWM ...................................................................................................................................................... 45
4.18 KPLED ................................................................................................................................................... 46
4.19 Bluetooth ................................................................................................................................................ 46
4.20 Antenna Interface ................................................................................................................................... 46
4.20.1 GSM Antenna Interface ................................................................................................................... 47
4.20.2 Bluetooth Antenna Interface ............................................................................................................ 48
5 PCB Layout ..................................................................................................................................................... 49
5.1 PIN Assignment...................................................................................................................................... 49
5.2 Principle of PCB Layout......................................................................................................................... 50
5.2.1 Antenna ............................................................................................................................................... 50
5.2.2. Power Supply ...................................................................................................................................... 50
5.2.3 SIM Card Interface.............................................................................................................................. 50
5.2.4 Audio Interface.................................................................................................................................... 50
5.2.5 Others.................................................................................................................................................. 50
6 Electrical, Reliability and Radio Characteristics......................................................................................... 51
6.1 Absolute Maximum Ratings................................................................................................................... 51
6.2 Recommended Operating Conditions..................................................................................................... 51
6.3 Digital Interface Characteristics ............................................................................................................. 51
6.4 SIM Card Interface Characteristics ........................................................................................................ 51
6.5 SIM_VDD Characteristics...................................................................................................................... 52
6.6 VDD_EXT Characteristics ..................................................................................................................... 52
6.7 VRTC Characteristics............................................................................................................................. 52
6.8 Current Consumption (VBAT = 4V) ...................................................................................................... 53
6.9 Electro-Static Discharge ......................................................................................................................... 54
6.10 Radio Characteristics.............................................................................................................................. 54
6.10.1 Module RF Output Power................................................................................................................ 54
6.10.2 Module RF Receive Sensitivity ....................................................................................................... 56
6.10.3 Module Operating Frequencies........................................................................................................ 56
7
Manufacturing ................................................................................................................................................ 57
7.1 Top and Bottom View of SIM800F........................................................................................................ 57
7.2 Typical Solder Reflow Profile................................................................................................................ 57
7.1. The Moisture Sensitivity Level .............................................................................................................. 58
7.2. Baking Requirements ............................................................................................................................. 58
8. Appendix ...................................................................................................................................................... 59
I. Related Documents................................................................................................................................. 59
II. Multiplex Function ................................................................................................................................. 60