Table Of Contents; Contents - Quectel Smart LTE Module Series Hardware Design

Contents

About the Document ................................................................................................................................ 2
Contents .................................................................................................................................................... 3
Table Index ............................................................................................................................................... 6
Figure Index .............................................................................................................................................. 8
1
Introduction ..................................................................................................................................... 13
1.1. Safety Information .................................................................................................................. 14
2
Product Concept ............................................................................................................................. 15
2.1. General Description ................................................................................................................ 15
2.2. Key Features .......................................................................................................................... 16
2.3. Evaluation Board .................................................................................................................... 19
3
Application Interfaces ..................................................................................................................... 20
3.1. General Description ................................................................................................................ 20
3.2. Pin Assignment ....................................................................................................................... 21
3.3. Pin Description ....................................................................................................................... 22
3.4. Power Supply ......................................................................................................................... 39
3.4.1. Power Supply Pins ....................................................................................................... 39
3.4.2. Decrease Voltage Drop ................................................................................................ 39
3.4.3. Reference Design for Power Supply ............................................................................ 40
3.5. Turn on and off Scenarios ...................................................................................................... 41
3.5.1. Turn on Module Using the PWRKEY ........................................................................... 41
3.5.2. Turn off Module ............................................................................................................ 43
3.6. VRTC Interface ....................................................................................................................... 43
3.7. Power Output ......................................................................................................................... 44
3.8. Battery Charge and Management .......................................................................................... 45
3.9. USB Interface ......................................................................................................................... 47
3.10. UART Interfaces ..................................................................................................................... 49
3.11. (U)SIM Interfaces ................................................................................................................... 51
3.12. SD Card Interface ................................................................................................................... 53
3.13. GPIO Interfaces ...................................................................................................................... 55
3.14. I2C Interfaces ......................................................................................................................... 59
3.15. I2S Interface ........................................................................................................................... 59
3.16. SPI Interfaces ......................................................................................................................... 60
3.17. ADC Interfaces ....................................................................................................................... 61
3.18. Vibrator Drive Interface ........................................................................................................... 61
3.19. LCM Interfaces ....................................................................................................................... 62
3.20. Touch Panel Interfaces ........................................................................................................... 66
3.21. Camera Interfaces .................................................................................................................. 67
3.21.1. Design Considerations ................................................................................................. 71
SC650T_Hardware_Design
Smart LTE Module Series
SC650T Hardware Design
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