User's Manual
Smart Machine Smart Decision
SIM7500A_User Manual_V1.00 2017-06-30
4
Contents
Contents ............................................................................................................................................. 4
Table Index ........................................................................................................................................ 6
Figure Index ...................................................................................................................................... 7
Revision History ................................................................................................................................ 8
1 Introduction ................................................................................................................................ 9
1.1 Product Outline ..................................................................................................................... 9
1.2 Hardware Interface Overview ............................................................................................... 9
1.3 Hardware Block Diagram...................................................................................................... 9
1.4 Functional Overview ........................................................................................................... 10
2 Package Information ............................................................................................................... 12
2.1 Pin Assignment Overview ................................................................................................... 12
2.2 Pin Description .................................................................................................................... 14
2.3 Mechanical Information ...................................................................................................... 16
2.4 Footprint Recommendation ................................................................................................. 17
3 Interface Application ............................................................................................................... 18
3.1 Power Supply ...................................................................................................................... 18
3.1.1 Power supply Design Guide ......................................................................................... 18
3.1.2 Recommended Power Supply Circuit .......................................................................... 19
3.1.3 Voltage Monitor ............................................................................................................ 20
3.2 Power on/Power of
f/Reset Function .................................................................................... 20
3.2.1 Power on ....................................................................................................................... 20
3.2.2 Power off ...................................................................................................................... 21
3.2.3 Reset Function .............................................................................................................. 22
3.3 UART Interface ................................................................................................................... 23
3.3.1 UART Design Guide .................................................................................................... 23
3.3.2 RI and DTR Behavior ................................................................................................... 25
3.4 USB Interface ...................................................................................................................... 25
3.4.1 USB Application Guide ................................................................................................ 26
3.5 USIM Interface.................................................................................................................... 26
3.5.1 USIM Application Guide .............................................................................................. 27
3.5.2 SIM Card Design Guide ............................................................................................... 27
3.5.3 Recommended USIM Card Holder .............................................................................. 28
3.6 PCM Interface ..................................................................................................................... 29
3.6.1 PCM Timing ................................................................................................................. 29
3.6.2 PCM Application Guide ............................................................................................... 30
3.7 I2C Interface ....................................................................................................................... 31
3.7.1 I2C Design Guide ......................................................................................................... 31
3.8 Network Sta
t
us .................................................................................................................... 32
3.9 Operating Status Indication ................................................................................................. 32
3.10 Pin Multiplex Function .................................................................................................... 32
3.11 Other interface ................................................................................................................. 33