Sunsea AIoT SIMCom SIM7075G User Manual page 4

Contents
1. Introduction ......................................................................................................................8
1.1 Product Outline ..................................................................................................................................... 8
1.2 Hardware Interface Overview ...............................................................................................................9
1.3 Hardware Block Diagram ................................................................................................................... 10
1.4Functional Overview ............................................................................................................................ 10
2. Package Information ..................................................................................................... 12
2.1 Pin Assignment Overview .................................................................................................................. 12
2.2 Pin Description ....................................................................................................................................14
2.3 Mechanical Information ...................................................................................................................... 19
2.4 Footprint Recommendation ................................................................................................................ 20
3. Interface Application ..................................................................................................... 21
3.1 Power Supply ......................................................................................................................................21
3.1.1 Power Supply Design Guide ..................................................................................................... 22
3.1.2 Recommended Power Supply Circuit .......................................................................................23
3.1.3Voltage Monitor .......................................................................................................................... 23
3.2 Power on/Power off Function ............................................................................................................. 23
3.2.1 Power on ................................................................................................................................... 24
3.2.2 Power off ................................................................................................................................... 25
3.3 UART Interface ................................................................................................................................... 26
3.3.1 UART Design Guide ..................................................................................................................27
3.3.2 RI and DTR Behavior ................................................................................................................ 29
3.4 USB Interface ..................................................................................................................................... 30
3.5 Force USB Download Interface ..........................................................................................................31
3.6 SIM Interface ...................................................................................................................................... 31
3.6.1 SIM Application Guide ...............................................................................................................32
3.7 PCM Interface .....................................................................................................................................33
3.7.1 PCM timing ................................................................................................................................ 33
3.7.2 PCM Application Guide ............................................................................................................. 34
3.8 I2C Interface ....................................................................................................................................... 35
3.9 Network status .................................................................................................................................... 36
3.10 ADC interface ................................................................................................................................... 37
3.11 LDO output ....................................................................................................................................... 37
4. RF Specifications ...........................................................................................................39
4.1 LTE RF Specifications ........................................................................................................................ 39
4.2 LTE Antenna Design Guide ................................................................................................................42
4.3 GNSS .................................................................................................................................................. 43
4.3.1 GNSS Technical specification .................................................................................................. 43
4.3.2 GNSS Application Guide ...........................................................................................................44
4.4 RF traces note .................................................................................................................................... 45
4.4.1 RF traces layout ........................................................................................................................ 45
4.4.2 LTE ANT and other system ANT decoupling ........................................................................... 47
5. Electrical Specifications ............................................................................................... 48
5.1 Absolute maximum ratings ................................................................................................................. 48
5.2 Operating conditions ...........................................................................................................................48
5.3 Operating Mode .................................................................................................................................. 50
5.3.1 Operating Mode Definition ........................................................................................................ 50
5.3.2 Sleep mode ............................................................................................................................... 51
5.3.3 Minimum functionality mode and Flight mode ..........................................................................51
5.3.4 Power Saving Mode (PSM) .......................................................................................................52
5.3.5 Extended Mode DRX (e-DRX) ..................................................................................................52
5.4 Current Consumption ......................................................................................................................... 53
5.5 ESD Notes .......................................................................................................................................... 56
6. SMT Production Guide .................................................................................................. 58
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