User's Manual

Smart Machine Smart Decision
SIM7500A_User Manual_V1.022016-09-29
3
Contents
Contents............................................................................................................................................... 3
Table Index.......................................................................................................................................... 5
Figure Index........................................................................................................................................ 6
Revision History..................................................................................................................................7
1 Introduction..................................................................................................................................8
1.1 Product Outline....................................................................................................................... 8
1.2 Hardware Interface Overview.................................................................................................8
1.3 Hardware Block Diagram....................................................................................................... 8
1.4 Functional Overview...............................................................................................................9
2 Package Information................................................................................................................. 11
2.1 Pin Assignment Overview.....................................................................................................11
2.2 Pin Description......................................................................................................................13
2.3 Mechanical Information........................................................................................................15
2.4 Footprint Recommendation.................................................................................................. 16
3 Interface Application.................................................................................................................17
3.1 Power Supply........................................................................................................................17
3.1.1 Power supply Design Guide.......................................................................................... 17
3.1.2 Recommended Power Supply Circuit............................................................................18
3.1.3 Voltage Monitor............................................................................................................. 19
3.2 Power on/Power off/Reset Function.....................................................................................19
3.2.1 Power on........................................................................................................................ 19
3.2.2 Power off........................................................................................................................20
3.2.3 Reset Function................................................................................................................21
3.3 UART Interface.....................................................................................................................22
3.3.1 UART Design Guide......................................................................................................22
3.3.2 RI and DTR Behavior.................................................................................................... 24
3.4 USB Interface........................................................................................................................24
3.4.1 USB Application Guide................................................................................................. 25
3.5 USIM Interface..................................................................................................................... 25
3.5.1 USIM Application Guide...............................................................................................26
3.5.2 SIM Card Design Guide................................................................................................ 26
3.5.3 Recommended USIM Card Holder............................................................................... 27
3.6 PCM Interface.......................................................................................................................28
3.6.1 PCM Timing...................................................................................................................28
3.6.2 PCM Application Guide.................................................................................................29
3.7 I2C Interface......................................................................................................................... 30
3.7.1 I2C Design Guide.......................................................................................................... 30
3.8 Network Status......................................................................................................................31
3.9 Operating Status Indication.................................................................................................. 31
3.10 Pin Multiplex Function......................................................................................................31
3.11 Other interface................................................................................................................... 32