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Smart Module Series
SC20_Series_Hardware_Design 53 / 133
master mode.
Table 18: Pin Definition of SPI Interface
3.15. I2C Interfaces
SC20 series provides three I2C interfaces which only support the master mode. As an open drain output,
each I2C interface needs to be pulled up externally, and the recommended logic level is 1.8 V.
Table 19: Pin Definition of I2C Interfaces
8
As for SC20-CE R1.1/-CEL R1.1, SC20-E/-EL, SC20-A/-AL, SC20-AU/-AUL, SC20-J/-JL, SC20-EU, pins 105, 116, 117,
118 and 119 are GPIO_0, GPIO_11, GPIO_10, GPIO_9 and GPIO_8 respectively; as for SC20-AX, SC20-EX, pins 105,
116, 117, 118 and 119 are GPIO_15, GPIO_3, GPIO_2, GPIO_1 and GPIO_0 respectively.
Pin Name Pin No. I/O Description Comment
GPIO_8
119
8
IO SPI master-out slave-in
Can be multiplexed into
SPI_MOSI.
GPIO_0
GPIO_9
118
8
IO SPI master-in slave-out
Can be multiplexed into
SPI_MISO.
GPIO_1
GPIO_10
117
8
DO SPI chip select
Can be multiplexed into
SPI_CS_N.
GPIO_2
GPIO_11
116
8
DO SPI clock
Can be multiplexed into
SPI_CLK.
GPIO_3
Pin Name Pin No. I/O Description Comment
TP_I2C_SCL 47 OD I2C clock signal of touch panel
Used for touch panel
TP_I2C_SDA 48 OD I2C data signal of touch panel
CAM_I2C_SCL 83 OD I2C clock signal of camera
Used for camera
CAM_I2C_SDA 84 OD I2C data signal of camera