Quectel BC95

NB-IoT Module Series
BC95 Hardware Design
BC95_Hardware_Design Confidential / Released 3 / 51
Contents
About the Document ................................................................................................................................... 2
Contents ....................................................................................................................................................... 3
Table Index ................................................................................................................................................... 5
Figure Index ................................................................................................................................................. 6
1 Introduction .......................................................................................................................................... 7
1.1. Safety Information ................................................................................................................... 8
2 Product Concept .................................................................................................................................. 9
2.1. General Description ................................................................................................................. 9
2.2. Key Features ......................................................................................................................... 10
2.3. Functional Diagram ............................................................................................................... 11
2.4. Evaluation Board ................................................................................................................... 12
3 Application Functions ....................................................................................................................... 13
3.1. General Description ............................................................................................................... 13
3.2. Pin Assignment ...................................................................................................................... 14
3.3. Pin Description ...................................................................................................................... 15
3.4. Operating Modes ................................................................................................................... 18
3.5. Power Supply ........................................................................................................................ 18
3.5.1. Power Supply Pins ......................................................................................................... 18
3.5.2. Reference Design for Power Supply .............................................................................. 19
3.6. Power on and down Scenarios ............................................................................................. 19
3.6.1. Power on ........................................................................................................................ 19
3.6.2. Power down.................................................................................................................... 20
3.6.3. Reset the Module ........................................................................................................... 20
3.7. Power Saving ........................................................................................................................ 21
3.8. UART Interfaces .................................................................................................................... 22
3.8.1. Main Port ........................................................................................................................ 23
3.8.2. Debug Port ..................................................................................................................... 24
3.8.3. UART Application ........................................................................................................... 25
3.9. USIM Card Interface .............................................................................................................. 26
3.9.1. USIM Card Application ................................................................................................... 26
3.10. ADC Interface* ....................................................................................................................... 28
3.11. Behaviors of RI* ..................................................................................................................... 28
3.12. Network Status Indication* .................................................................................................... 29
4 Antenna Interface ............................................................................................................................... 31
4.1. RF Antenna Reference Design ............................................................................................. 31
4.2. Reference Design of RF Layout ............................................................................................ 32
4.3. RF Output Power ................................................................................................................... 34
4.4. RF Receiving Sensitivity ........................................................................................................ 34
4.5. Operating Frequencies .......................................................................................................... 35
Quectel
Confidential