SimCom SIM7020E - Purpose of this document; Evaluation Board Overview; Installations and Communication

Smart Machine Smart Decision
SIM7020_Hardware_Design_V1.02 2 2018-07-25
Contents
Contents .............................................................................................................................................2
Table Index ........................................................................................................................................4
Figure Index ......................................................................................................................................5
1 Introduction ................................................................................................................................7
1.1 Product Outline .....................................................................................................................7
1.2 Hardware Interface Overview ...............................................................................................7
1.3 Hardware Block Diagram......................................................................................................7
1.4 Functional Overview .............................................................................................................8
2 Package Information................................................................................................................10
2.1 Pin Assignment Overview ...................................................................................................10
2.2 Pin Description .................................................................................................................... 11
2.3 Mechanical Information ......................................................................................................14
2.4 Footprint Recommendation .................................................................................................15
3 Interface Application ...............................................................................................................16
3.1 Power Supply ......................................................................................................................16
3.2 Power Supply Design Guide ...............................................................................................16
3.3 Voltage Monitor...................................................................................................................17
3.4 Power on/Power off/Reset Function ....................................................................................17
3.4.1 Power on .......................................................................................................................17
3.4.2 Power off ......................................................................................................................19
3.4.3 Reset Function ..............................................................................................................20
3.5 UART Interface ...................................................................................................................21
3.5.1 UART Design Guide ....................................................................................................21
3.5.2 RI and DTR Behavior ...................................................................................................23
3.6 USB Interface ......................................................................................................................23
3.7 SIM Interface ......................................................................................................................24
3.7.1 SIM Application Guide ................................................................................................24
3.7.2 Recommended SIM Card Holder .................................................................................25
3.8 Network status .....................................................................................................................26
3.9 ADC ....................................................................................................................................26
3.10 Power Supply Output .......................................................................................................27
4 RF Specifications ......................................................................................................................29
4.1 LTE RF Specifications ........................................................................................................29
4.2 LTE Antenna Design Guide ................................................................................................30
4.3 RF traces note ......................................................................................................................31
4.3.1 RF traces layout ............................................................................................................31
4.3.2 LTE ANT and other system ANT decoupling ..............................................................33
5 Electrical Specifications ...........................................................................................................34
5.1 Absolute maximum ratings .................................................................................................34
5.2 Operating conditions ...........................................................................................................34