Smart Module Series
SC200L_Series(Dual-band Wi-Fi)_Hardware_Design 50 / 111
3.13. I2C Interfaces
The module provides four I2C interfaces. All I2C interfaces are open-drain output with pull-up resistors
inside the module, and the reference power domain is 1.85 V.
Table 18: Pin Definition of I2C Interfaces
3.14. SPI Interface
The module provides one SPI interface multiplexed from GPIO interfaces. The SPI interface is only
supported in master mode and can be used for fingerprint recognition.
Table 19: Pin Definition of SPI Interface
Pin Name
Pin No.
I/O
Description
Comment
TP_I2C_SCL
47
OD
TP I2C clock
Used for touch panel
TP_I2C_SDA
48
OD
TP I2C data
CAM_I2C_SCL
83
OD
I2C clock of camera
Used for camera
CAM_I2C_SDA
84
OD
I2C data of camera
I2C4_SCL
105
OD
I2C4 clock
Used for external
devices
I2C4_SDA
106
OD
I2C4 data
SENSOR_I2C_SCL
91
OD
I2C clock for external sensor
Used for external
sensor
SENSOR_I2C_SDA
92
OD
I2C data for external sensor
Pin Name
Pin No.
I/O Description
Comment
GPIO_93
116
DO
SPI0 clock
Multiplexed into SPI0_CLK
GPIO_90
117
DO
SPI0 chip select
Multiplexed into SPI0_CSN
GPIO_92
118
DI
SPI0 data input
Multiplexed into SPI0_DI
GPIO_91
119
DO
SPI0 data output
Multiplexed into SPI0_DO