LPWA Module Series
BG95 Hardware Design
BG95_Hardware_Design 3 / 80
Contents
About the Document ................................................................................................................................ 2
Contents .................................................................................................................................................... 3
Table Index ............................................................................................................................................... 5
Figure Index .............................................................................................................................................. 7
1 Introduction ....................................................................................................................................... 8
1.1. Safety Information .................................................................................................................... 9
2 Product Concept ............................................................................................................................. 13
2.1. General Description ................................................................................................................ 13
2.2. Key Features .......................................................................................................................... 15
2.3. Functional Diagram ................................................................................................................ 18
2.4. Evaluation Board .................................................................................................................... 19
3 Application Interfaces ..................................................................................................................... 20
3.1. Pin Assignment ...................................................................................................................... 21
3.2. Pin Description ....................................................................................................................... 22
3.3. Operating Modes .................................................................................................................... 29
3.4. Power Saving ......................................................................................................................... 30
3.4.1. Airplane Mode .............................................................................................................. 30
3.4.2. Power Saving Mode (PSM).......................................................................................... 31
3.4.3. Extended Idle Mode DRX (e-I-DRX) ............................................................................ 32
3.4.4. Sleep Mode* ................................................................................................................ 32
3.4.4.1. UART Application .............................................................................................. 32
3.5. Power Supply ......................................................................................................................... 33
3.5.1. Power Supply Pins ....................................................................................................... 33
3.5.2. Decrease Voltage Drop ............................................................................................... 34
3.5.3. Monitor the Power Supply ............................................................................................ 35
3.6. Turn on and off Scenarios ...................................................................................................... 35
3.6.1. Turn on Module Using the PWRKEY Pin ..................................................................... 35
3.6.2. Turn off Module ............................................................................................................ 37
3.6.2.1. Turn off Module Using the PWRKEY Pin ........................................................... 37
3.6.2.2. Turn off Module Using AT Command ................................................................ 38
3.7. Reset the Module ................................................................................................................... 38
3.8. (U)SIM Interface ..................................................................................................................... 40
3.9. USB Interface ......................................................................................................................... 42
3.10. UART Interfaces ..................................................................................................................... 44
3.11. PCM* and I2C* Interfaces ......................................................................................................
47
3.12. Network Status Indication ....................................................................................................... 48
3.13. STATUS ................................................................................................................................. 49
3.14. Behaviors of RI* ..................................................................................................................... 49
3.15. USB_BOOT Interface ............................................................................................................. 50
3.16. ADC Interfaces ....................................................................................................................... 51
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