radxa_rock_3c.md

Radxa ROCK 3 Model C {#_Radxa}

Radxa ROCK 3 Model C is a Rockchip RK3566 based SBC(Single Board Computer) by Radxa. It can run Android or Linux. Radxa ROCK 3 Model C features a four core ARM processor, 64bit dual channel 3200Mb/s LPDDR4, HDMI up to 4K60p, MIPI DSI, MIPI CSI, 3.5mm combo audio jack, Wi-Fi 6, Bluetooth 5.0, USB, GbE LAN, and 40-pin color expansion header. Radxa ROCK 3 Model C is powered by the USB Type-C port, and supports 5V input only. The recommended power adapter is 5V/3A without SSD, or 5V/5A with SSD.

Interface notes

• UART2 is enabled as the default console.
• Pin 37 is occupied by the audio I2S device, as such it is currently unavailable as GPIO.
• All UART ports support baud up to 1500000.
• Pin 3 & 5 are connected to the 3.3V supply through a 2.2K pull-up resistor to support I2C function. As such they cannot be used as GPIO.

Pin Mapping

Radxa ROCK 3 Model C has a 40-pin expansion header. Each pin is distinguished by the color.

Function3	Function3	Function2	Function1	PIN	PIN	Function1	Function2	Function3	Function4
			3V3	1	2	+5.0V
	I2C3_SDA_M0	UART3_RX_M0	GPIO0_D1	3	4	+5.0V
	I2C3_SCL_M0	UART3_TX_M0	GPIO1_A1	5	6	GND
		PWM14_M0	GPIO3_C4	7	8	GPIO0_D1	UART2_TX_M0
			GND	9	10	GPIO0_D0	UART2_RX_M0
			GPIO3_A1	11	12	GPIO3_A3
			GPIO3_A2	13	14	GND
			GPIO3_B0	15	16	GPIO3_B1	UART4_RX_M1	PWM8_M0
			+3.3V	17	18	GPIO3_B2	UART4_TX_M1	PWM9_M0
	PWM15_IR_M1	SPI3_MOSI_M1	GPIO4_C3	19	20	GND
UART9_TX_M1	PWM12_M1	SPI3_MISO_M1	GPIO4_C5	21	22	GPIO3_C1
		SPI3_CLK_M1	GPIO4_C2	23	24	GPIO4_C6	SPI3_CS0_M1	PWM13_M1	UART9_RX_M1
			GND	25	26	NC
		I2C4_SDA_M0	GPIO4_B2	27	28	GPIO4_B3
			GPIO3_B3	29	30	GND
			GPIO3_B4	31	32	GPIO3_C2	UART5_TX_M1
		UART5_RX_M1	GPIO3_C3	33	34	GND
			GPIO3_A4	35	36	GPIO3_A7
			GPIO1_A4	37	38	GPIO3_A6
			GND	39	40	GPIO3_A5

Supports

You can find additional product support in the following channels:

• Product Info
• Forums
• Github