SIM Tech SIMCom SIM900-DS, Hardware Design

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Smart Machine Smart Decision
SIM900-DS_Hardware Design_V1.00
5
2013-01-20
Table Index
Table 1: SIM900-DS key features ...................................................................................................................... 8
Table 2: Coding schemes and maximum net data rates over air interface........................................................ 10
Table 3: Overview of operating modes............................................................................................................. 10
Table 4: Pin description .................................................................................................................................... 13
Table 5: The Current consumption of Minimum Functionality Mode ............................................................. 22
Table 6: Microphone Input Characteristics....................................................................................................... 28
Table 7: Audio Output Characteristics ............................................................................................................. 28
Table 8: Pin description (Amphenol SIM card holder)..................................................................................... 30
Table 9: Pin description (Molex SIM card holder) ........................................................................................... 31
Table 10: ADC specification ............................................................................................................................ 32
Table 11: RI Behaviors ..................................................................................................................................... 32
Table 12: Status of the NETLIGHT pin ........................................................................................................... 34
Table 13: Pin definition of the GPIO interface ................................................................................................. 34
Table 14: Absolute maximum ratings............................................................................................................... 37
Table 15: Recommended operating conditions................................................................................................. 37
Table 16: Digital interface characteristics ........................................................................................................ 37
Table 17: SIM card interface characteristics..................................................................................................... 38
Table 18: VDD_EXT characteristics ................................................................................................................ 38
Table 19: SIM1_VDD and SIM2_VDD characteristics ................................................................................... 38
Table 20: VRTC characteristics........................................................................................................................ 38
Table 21: Current consumption* ...................................................................................................................... 39
Table 22: The ESD characteristics (Temperature: 25
℃
, Humidity: 45 %) ...................................................... 40
Table 23: SIM900-DS GSM850 and EGSM900 conducted RF output power ................................................. 40
Table 24: SIM900-DS DCS1800 and PCS1900 conducted RF output power.................................................. 41
Table 25: SIM900-DS conducted RF receive sensitivity.................................................................................. 42
Table 26: SIM900-DS operating frequencies ................................................................................................... 42
Table 27: Illustration of module information.................................................................................................... 44
Table 28: Related documents............................................................................................................................ 45
Table 29: Terms and Abbreviations.................................................................................................................. 46
Table 30: Safety caution ................................................................................................................................... 47