I2C Interfaces - Quectel SC20-WL Hardware Design

SC20-WL provides one SPI interface multiplexed from GPIO interfaces. The interface only supports the
master mode.
Table 12: Pin Definition of SPI Interface
Pin Name Pin No
GPIO_8 119
GPIO_9 118
GPIO_10 117
GPIO_11 116

3.14. I2C Interfaces

SC20-WL provides 3 groups of I2C interfaces which only support the master mode. As an open drain
output, the I2C interfaces need a pull-up resistor on its external circuit, and the recommended logic level
is 1.8V.
Table 13: Pin Definition of I2C Interface
Pin Name
TP_I2C_SCL
TP_I2C_SDA
CAM_I2C_SCL
CAM_I2C_SDA
SENSOR_I2C_SCL
SENSOR_I2C_SDA
SC20-WL_Hardware_Design
I/O Comment
GPIO by default.
IO
Can be multiplexed into SPI_MOSI.
GPIO by default.
IO
Can be multiplexed into SPI_MISO.
GPIO by default.
DO
Can be multiplexed into SPI_CS_N.
GPIO by default.
DO
Can be multiplexed into SPI_CLK.
Pin No I/O Description
47 OD I2C clock signal of touch panel
48 OD I2C data signal of touch panel
83 OD I2C clock signal of camera
84 OD I2C data signal of camera
91 OD I2C clock signal for external sensor
92 OD I2C data signal for external sensor
Smart Wi-Fi Module Series
SC20-WL Hardware Design
Description
Master out slave in of SPI
Master in slave out of SPI
SPI chip select
SPI clock
Comment
Used for touch panel
Used for camera
Used for external
sensor
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