SimCom SIM808, Hardware Design

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SIM808_Hardware Design_V1.00 2014.03.27 5
A. Related Documents.......................................................................................................................................... 63
B. Terms and Abbreviations ................................................................................................................................. 64
C. Safety Caution ................................................................................................................................................. 65
Table Index
TABLE 1: SIM808 GSM/GPRS ENGINE KEY FEATURES ......................................................................................... 10
TABLE 2: GPS ENGINE PERFORMANCE ................................................................................................................... 12
TABLE 3: CODING SCHEMES AND MAXIMUM NET DATA RATES OVER AIR INTERFACE ............................ 12
TABLE 4: OVERVIEW OF OPERATING MODES........................................................................................................ 13
TABLE 5: PIN DESCRIPTION ....................................................................................................................................... 16
TABLE 6: RECOMMENDED ZENER DIODE .............................................................................................................. 20
TABLE 7: ELECTRONIC CHARACTERISTIC OF THE RESET PIN.......................................................................... 26
TABLE 8: THE CURRENT CONSUMPTION OF FUNCTION MODES (BS-PA-MFRMS=5) ................................... 27
TABLE 9: SPECIFICATION OF RECOMMENDED BATTERY PACK........................................................................ 28
TABLE 10: SERIAL PORT AND USB PIN DEFINITION ............................................................................................. 31
TABLE 11: SERIAL PORT CHARACTERISTICS......................................................................................................... 31
TABLE 12: SERIAL PORT CHARACTERISTICS......................................................................................................... 34
TABLE 13: RI BEHAVIORS ........................................................................................................................................... 35
TABLE 14: AUDIO INTERFACE DEFINITION............................................................................................................ 36
TABLE 15: MICROPHONE INPUT CHARACTERISTICS........................................................................................... 38
TABLE 16: AUDIO OUTPUT CHARACTERISTICS .................................................................................................... 38
TABLE 17: SIM PIN DEFINITION................................................................................................................................. 40
TABLE 18: PIN DESCRIPTION (MOLEX SIM CARD HOLDER) .............................................................................. 42
TABLE 19: PIN DESCRIPTION (AMPHENOL SIM CARD HOLDER)....................................................................... 42
TABLE 20: PCM PIN DEFINITION ............................................................................................................................... 43
TABLE 21: PCM PIN SPECIFICATION......................................................................................................................... 43
TABLE 22: PCM MULTIPLEX FUNCTION.................................................................................................................. 43
TABLE 23: PIN DEFINITION OF THE KEYPAD INTERFACE................................................................................... 47
TABLE 24: KEYPAD MULTIPLEX FUNCTION........................................................................................................... 47
TABLE 25: PIN DEFINITION OF THE I2C ................................................................................................................... 48
TABLE 26: I2C MULTIPLEX FUNCTION .................................................................................................................... 48
TABLE 27: PIN DEFINITION OF THE GPIO................................................................................................................ 48
TABLE 28: PIN DEFINITION OF THE ADC................................................................................................................. 48
TABLE 29: ADC SPECIFICATION ................................................................................................................................ 49
TABLE 30: PIN DEFINITION OF THE PWM ............................................................................................................... 49
TABLE 31: BUZZER OUTPUT CHARACTERISTICS ................................................................................................. 49
TABLE 32: PWM MULTIPLEX FUNCTION................................................................................................................. 49
TABLE 33: PIN DEFINITION OF THE NETLIGHT ..................................................................................................... 50
TABLE 34: STATUS OF THE NETLIGHT PIN.............................................................................................................. 50
TABLE 35: PIN DEFINITION OF THE STATUS........................................................................................................... 50
TABLE 36: DEFINITION OF THE RF_SYNC PIN........................................................................................................ 51
TABLE 37: AT COMMANDS FOR GPS FUNCTION.................................................................................................... 52
TABLE 38: ABSOLUTE MAXIMUM RATINGS........................................................................................................... 54
TABLE 39: RECOMMENDED OPERATING CONDITIONS ....................................................................................... 55
TABLE 40: DIGITAL INTERFACE CHARACTERISTICS ........................................................................................... 55
TABLE 41: SIM CARD INTERFACE CHARACTERISTICS........................................................................................ 55
TABLE 42: SIM_VDD CHARACTERISTICS................................................................................................................ 56