Product Info
SC200L Hardware Design
SC200L_Hardware_Design 4 / 103
Contents
About the Document ................................................................................................................................ 3
Contents .................................................................................................................................................... 4
1 Introduction ....................................................................................................................................... 6
1.1. Safety Information .................................................................................................................... 6
2 Product Concept ............................................................................................................................... 8
2.1. General Description .................................................................................................................. 8
2.2. Evaluation Board ...................................................................................................................... 9
3 Application Interfaces ..................................................................................................................... 10
3.1. General Description ................................................................................................................ 10
3.2. Pin Assignment ........................................................................................................................11
3.3. Pin Description ....................................................................................................................... 12
3.4. Power Supply ......................................................................................................................... 23
3.4.1. Decrease Voltage Drop ................................................................................................ 23
3.4.2. Decrease Voltage Drop ................................................................................................ 23
3.4.3. Reference Design for Power Supply ............................................................................ 25
3.5. Turn on and off Scenarios ...................................................................................................... 26
3.5.1.
Turn on Module Using the PWRKEY ........................................................................... 26
3.5.2. Turn off Module ............................................................................................................ 28
3.6. Power Output ......................................................................................................................... 28
3.7. Battery Charge and Management .......................................................................................... 29
3.8. USB Interface ......................................................................................................................... 30
3.9. UART Interfaces ..................................................................................................................... 33
3.10. (U)SIM Interface ..................................................................................................................... 34
3.11. SD Card Interface ................................................................................................................... 36
3.12. GPIO Interfaces ...................................................................................................................... 38
3.13. I2C Interfaces ......................................................................................................................... 40
3.14. SPI Interfaces ......................................................................................................................... 40
3.15. ADC Interface ......................................................................................................................... 41
3.16. LCM Interface ......................................................................................................................... 42
3.17. Touch Panel Interface ............................................................................................................. 44
3.18. Camera Interface .................................................................................................................... 45
3.19. Sensor Interfaces ................................................................................................................... 49
3.20. Audio Interface ....................................................................................................................... 50
3.20.1 Microphone interface reference circuit ............................................................................ 51
3.20.2 Handset interface reference circuit .................................................................................. 52
3.20.3 Headphone interface reference circuit ............................................................................ 52
3.20.4 Speaker interface reference circuit .................................................................................. 53
3.20.5 Audio signal design considerations ................................................................................. 53
3.21. Emergency Download Interface ............................................................................................. 54