hardware design v1 00 2

Smart Machine Smart Decision
SIM900R_Hardware Design_V1.00 5 2012-07-20
Table Index
Table 1: SIM900R 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 ................................................................. 21
Table 6: Microphone Input Characteristics .......................................................................................................... 27
Table 7: Audio Output Characteristics ................................................................................................................. 27
Table 8: Pin description (Amphenol SIM card holder) ........................................................................................ 29
Table 9: Pin description (Molex SIM card holder)............................................................................................... 30
Table 10: Pin definition of the keypad interface .................................................................................................. 31
Table 11: ADC specification ................................................................................................................................ 32
Table 12: RI behaviours ....................................................................................................................................... 32
Table 13: Status of the NETLIGHT pin ............................................................................................................... 33
Table 14: Pin definition of the GPIO interface..................................................................................................... 34
Table 15: Absolute maximum ratings................................................................................................................... 37
Table 16: Recommended operating conditions .................................................................................................... 37
Table 17: Digital interface characteristics ............................................................................................................ 37
Table 18: SIM card interface characteristics ........................................................................................................ 38
Table 19: VDD_EXT characteristics.................................................................................................................... 38
Table 20: SIM_VDD characteristics .................................................................................................................... 38
Table 21: VRTC characteristics............................................................................................................................ 39
Table 22: Current consumption* .......................................................................................................................... 39
Table 23: The ESD characteristics (Temperature: 25℃, Humidity: 45 %) .......................................................... 40
Table 24: SIM900R EGSM 900 conducted RF output power.............................................................................. 40
Table 25: SIM900R DCS 1800 conducted RF output power ............................................................................... 41
Table 26: SIM900R conducted RF receive sensitivity......................................................................................... 42
Table 27: SIM900R operating frequencies........................................................................................................... 42
Table 28: Illustration of module information ....................................................................................................... 43
Table 29: Related documents ............................................................................................................................... 45
Table 30: Terms and abbreviations....................................................................................................................... 46
Table 31: Safety caution....................................................................................................................................... 47