SC200L Hardware Design
SC200L_Hardware_Design
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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
