Table Of Contents; Contents - Quectel SC20-WL Hardware Design

Contents

About the Document ................................................................................................................................... 2
Contents ....................................................................................................................................................... 3
Table Index ................................................................................................................................................... 5
Figure Index ................................................................................................................................................. 6
1 Introduction ........................................................................................................................................ 11
1.1. Safety Information.................................................................................................................... 11
2 Product Concept ................................................................................................................................ 13
2.1. General Description ................................................................................................................. 13
2.2. Key Features ........................................................................................................................... 14
2.3. Functional Diagram ................................................................................................................. 16
2.4. Evaluation Board ..................................................................................................................... 17
3 Application Interfaces ....................................................................................................................... 18
3.1. General Description ................................................................................................................. 18
3.2. Pin Assignment ........................................................................................................................ 19
3.3. Pin Description ......................................................................................................................... 20
3.4. Power Supply ........................................................................................................................... 29
3.4.1. Power Supply Pins ......................................................................................................... 29
3.4.2. Decrease Voltage Drop .................................................................................................. 29
3.4.3. Reference Design for Power Supply .............................................................................. 30
3.5. Turn on and off Scenarios ....................................................................................................... 31
3.5.1. Turn on Module Using the PWRKEY ............................................................................. 31
3.5.2. Turn off Module .............................................................................................................. 33
3.6. VRTC Interface ........................................................................................................................ 34
3.7. Power Output ........................................................................................................................... 35
3.8. Battery Charge and Management ........................................................................................... 35
3.9. USB Interface .......................................................................................................................... 37
3.10. UART Interfaces ...................................................................................................................... 39
3.11. SD Card Interface .................................................................................................................... 40
3.12. GPIO Interfaces ....................................................................................................................... 42
3.13. SPI Interface ............................................................................................................................ 44
3.14. I2C Interfaces .......................................................................................................................... 45
3.15. ADC Interfaces ........................................................................................................................ 46
3.16. Motor Drive Interface ............................................................................................................... 46
3.17. LCM Interface .......................................................................................................................... 47
3.18. Touch Panel Interface .............................................................................................................. 50
3.19. Camera Interfaces ................................................................................................................... 51
3.19.1. Rear Camera Interface................................................................................................... 51
3.19.2. Front Camera Interface .................................................................................................. 53
3.19.3. Design Considerations ................................................................................................... 55
3.20. Sensor Interfaces..................................................................................................................... 56
SC20-WL_Hardware_Design
Smart Wi-Fi Module Series
SC20-WL Hardware Design
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