SimCom SIM802 HD, Manual

Page: 4 / 73

SIM802 Hardware Design
3.11 SIM interface................................................................................................................... 50
3.11.1 SIM card application ............................................................................................. 50
3.11.2 Design considerations for SIM card holder ........................................................... 51
3.11.3 Design considerations for SIM card holder ........................................................... 52
3.12 LCD display interface ..................................................................................................... 54
3.13 General purpose input & output (GPIO) ......................................................................... 55
3.14 ADC ................................................................................................................................ 55
3.15 Behaviors of the Ring line (The main serial interface only) ........................................... 56
3.16 Network status indication LED lamp .............................................................................. 57
3.17 SRD interface .................................................................................................................. 57
3.18 Buzzer ............................................................................................................................. 59
4 Antenna interface ........................................................................................................................ 60
4.1 Antenna installation........................................................................................................... 60
4.1.1 Antenna pad............................................................................................................. 60
4.2 Module RF output power .................................................................................................. 61
4.3 Module RF receive sensitivity........................................................................................... 61
4.4 Module operating frequencies........................................................................................... 61
5 Electrical, reliability and radio characteristics ............................................................................ 62
5.1 Absolute maximum ratings................................................................................................ 62
5.2 Operating temperatures ..................................................................................................... 62
5.3 Power supply rating........................................................................................................... 62
5.4 Current consumption......................................................................................................... 63
5.5 Electro-Static discharge..................................................................................................... 64
6 Mechanics ................................................................................................................................... 65
6.1 Mechanical dimensions of SIM802................................................................................... 65
6.2 PIN assignment of SIM802 ............................................................................................... 69
6.3 The ramp-soak-spike reflow profile of SIM802................................................................ 72
SIM802_HD_V2.01 12.01.2010
4