Product Info

LPWA Module Series
BC66-NA Hardware Design
BC66-NA_Hardware_Design 3 / 59
Contents
About the Document ................................................................................................................................ 2
Contents .................................................................................................................................................... 3
Table Index ............................................................................................................................................... 5
Figure Index .............................................................................................................................................. 6
1 Introduction ....................................................................................................................................... 7
1.1. Safety Information .................................................................................................................... 8
2 Product Concept ............................................................................................................................. 13
2.1. General Description ................................................................................................................ 13
2.2. Key Features .......................................................................................................................... 14
2.3. Functional Diagram ................................................................................................................ 15
2.4. Development Board ................................................................................................................ 16
3 Application Interfaces ..................................................................................................................... 17
3.1. General Description ................................................................................................................ 17
3.2. Pin Assignment ....................................................................................................................... 18
3.3. Pin Description ....................................................................................................................... 19
3.4. Operating Modes .................................................................................................................... 22
3.5. Power Saving Mode (PSM) .................................................................................................... 23
3.6. Power Supply ......................................................................................................................... 25
3.6.1. Power Supply Pins ....................................................................................................... 25
3.6.2. Reference Design for Power Supply ............................................................................ 26
3.7. Power up/Power down Scenarios ........................................................................................... 26
3.7.1. Turn on ........................................................................................................................ 26
3.7.2. Turn off ........................................................................................................................ 28
3.7.3. Reset the Module ......................................................................................................... 29
3.8. USB Interface ......................................................................................................................... 30
3.9. UART Interfaces ..................................................................................................................... 31
3.9.1. Main UART Port ........................................................................................................... 32
3.9.2. Debug UART Port ........................................................................................................ 33
3.9.3. Auxiliary UART Port ..................................................................................................... 33
3.9.4. UART Application ......................................................................................................... 34
3.10. USIM Interface ....................................................................................................................... 36
3.11. ADC Interface* ....................................................................................................................... 38
3.12. RI Behaviors ........................................................................................................................... 38
3.13. Network Status Indication ....................................................................................................... 39
4 Antenna Interface ............................................................................................................................ 40
4.1. Pin Definition .......................................................................................................................... 40
4.2. Operating Frequencies ........................................................................................................... 40
4.3. RF Antenna Reference Design ............................................................................................... 41
4.4. Reference Design of RF Layout ............................................................................................. 42