SimCom SIM900D Hardware Design page 5

SIM900D Hardware Design
Table Index
TABLE1: RELATED DOCUMENTS ................................................................................................................................ 8
TABLE2: TERMS AND ABBREVIATIONS .................................................................................................................... 8
TABLE3: SIM900D KEY FEATURES............................................................................................................................ 13
TABLE4: CODING SCHEMES AND MAXIMUM NET DATA RATES OVER AIR INTERFACE ............................. 15
TABLE5: PIN DESCRIPTION ........................................................................................................................................ 18
TABLE6: OVERVIEW OF OPERATING MODES......................................................................................................... 21
TABLE7: SPECIFICATION OF RECOMMENDED BATTERY PACK......................................................................... 30
TABLE8: CHARGE OPERATING MODES ................................................................................................................... 31
TABLE9: AT COMMAND USUALLY USED IN CHARGE-ONLY MODE ................................................................. 32
TABLE10: THE CURRENT CONSUMPTION OF DIFFERENT CONFIGURATION OF AT+CFUN......................... 33
TABLE11: PIN DEFINITION OF THE SERIAL INTERFACES ................................................................................... 36
TABLE12: LOGIC LEVELS OF THE SERIAL PORT AND DEBUG PORT ................................................................ 37
TABLE13: PIN DEFINITION OF THE AUDIO INTERFACES .................................................................................... 40
TABLE14: MIC INPUT CHARACTERISTICS .............................................................................................................. 43
TABLE15: AUDIO OUTPUT CHARACTERISTICS ..................................................................................................... 43
TABLE16: PIN DEFINITION OF THE SIM INTERFACE ............................................................................................ 44
TABLE17: PIN DESCRIPTION (AMPHENOL SIM CARD HOLDER) ....................................................................... 46
TABLE18: PIN DESCRIPTION (MOLEX SIM CARD HOLDER) ............................................................................... 47
TABLE19: PIN DEFINITION OF THE LCD INTERFACE ........................................................................................... 48
TABLE20: ADC SPECIFICATION ................................................................................................................................. 48
TABLE21: BEHAVIOURS OF THE RI........................................................................................................................... 49
TABLE22: WORKING STATE OF THE NETLIGHT .................................................................................................... 50
TABLE23: PIN DEFINITION OF THE GPIO INTERFACE .......................................................................................... 51
TABLE24: PIN DEFINITION OF THE PWM ................................................................................................................ 52
TABLE25: SIM900D CONDUCTED RF OUTPUT POWER......................................................................................... 53
TABLE26: SIM900D CONDUCTED RF RECEIVE SENSITIVITY ............................................................................. 53
TABLE27: SIM900D OPERATING FREQUENCIES..................................................................................................... 53
TABLE28: ABSOLUTE MAXIMUM RATINGS............................................................................................................ 54
TABLE29: SIM900D OPERATING TEMPERATURE ................................................................................................... 54
TABLE30: SIM900D POWER SUPPLY RATINGS........................................................................................................ 55
TABLE31: SIM900D CURRENT CONSUMPTION (VBAT=3.8V) .............................................................................. 56
TABLE32: THE ESD ENDURE STATUE MEASURED TABLE (TEMPERATURE: 25℃, HUMIDITY:45% ) ......... 57
TABLE33: PIN ASSIGNMENT....................................................................................................................................... 61
5
SIM900D_Hardware Design_V1.04 2010.10.09