SIM900D Hardware Design
3.11.1 SIM Card Application......................................................................................................................44
3.11.2 Design Considerations for SIM Card Holder ..................................................................................45
3.12 LCD Display Interface ..............................................................................................................................46
3.13 ADC ..........................................................................................................................................................46
3.14 Behaviors of the RI ...................................................................................................................................47
3.15 Network Status Indication.........................................................................................................................48
3.16 General Purpose Input Output (GPIO)......................................................................................................48
3.17 PWM .........................................................................................................................................................49
4.1 Module RF Output Power ...........................................................................................................................50
4.2 Module RF Receive Sensitivity...................................................................................................................50
4.3 Module Operating Frequencies ...................................................................................................................51
5.1 Absolute Maximum Ratings........................................................................................................................51
5.2 Operating Temperatures..............................................................................................................................51
5.3 Power Supply Ratings .................................................................................................................................52
5.4 Current Consumption ..................................................................................................................................53
5.5 Electro-Static Discharge..............................................................................................................................54
6.1 Mechanical Dimensions of SIM900D.........................................................................................................55
6.2 Top and Bottom View of the SIM900D.......................................................................................................58
6.3 PIN Assignment of SIM900D .....................................................................................................................58
6.4 The Ramp-Soak-Spike Reflow Profile of SIM900D...................................................................................60
SIM900D_HD_V1.02
09.04.2010
4
