40-Pin GPIO Header

The Radxa NX5 IO Board is equipped with a 40-pin GPIO (General Purpose Input/Output) interface, providing highly flexible interface support for hardware expansion.

Users can connect various sensors, actuators, communication modules, displays, and other embedded peripherals through the 40-pin GPIO interface to quickly implement prototype development and feature validation in IoT, robotics control, industrial automation, and other fields.

Usage Warning

When using the 40-pin GPIO interface, please pay attention to the pin and peripheral wiring. Ensure the pin connections are correct, as improper operation may cause damage to the device hardware.

GPIO Functions

GPIO number	Function7	Function6	Function5	Function4	Function3	Function2	Function1	Pin#	Pin#	Function1	Function2	Function3	Function4	Function5	Function6	Function7	GPIO number
							+3.3V	1	2	+5.0V
28		I2S1_SDO2_M1		SPI3_CS0_M2	PWM3_IR_M0	I2C1_SCL_M2	GPIO0_D4	3	4	+5.0V
29				SPI3_CS1_M2		I2C1_SDA_M2	GPIO0_D5	5	6	GND
141			UART9_RX_M1	SPI3_MISO_M1	PWM12_M1		GPIO1_C0	7	8	GPIO0_B5	I2C1_SCL_M0			UART2_TX_M0	I2S1_MCLK_M1		13
							GND	9	10	GPIO0_B6	I2C1_SDA_M0			UART2_RX_M0	I2S1_SCLK_M1		14
122			UART9_RTSN_M2	SPI0_MOSI_M3		I2C7_SCL_M2	GPIO3_D2	11	12	GPIO1_C3	I2C6_SCL_M1	PWM7_IR_M2	SPI4_CS0_M0	UART3_CTSN	I2S0_SCLK		51
58	I2S0_SDO3	I2S0_SDI2	UART4_TX_M0	SPI1_CLK_M2	PWM0_M1	I2C1_SCL_M4	GPIO1_D2	13	14	GND
8			UART0_RX_M1	SPI2_CS1_M2		I2C1_SCL_M1	GPIO0_B0	15	16	GPIO1_D5			SPI1_CS1_M2		I2S0_SDI1		61
							+3.3V	17	18	GPIO1_D3	I2C1_SDA_M4	PWM1_M1	SPI1_CS0_M2	UART4_RX_M0			59
42			UART4_RX_M2	SPI0_MOSI_M2			GPIO1_B2	19	20	GND
41				SPI0_MISO_M2			GPIO1_B1	21	22	GPIO1_D0	I2C7_SCL_M0		SPI1_MISO_M2	UART6_TX_M2	I2S0_SDO1		56
43			UART4_TX_M2	SPI0_CLK_M2			GPIO1_B3	23	24	GPIO1_B4			SPI0_CS0_M2	UART7_RX_M2			44
							GND	25	26	GPIO1_B5			SPI0_CS1_M2	UART7_TX_M2			45
26		I2S1_SDO1_M1	UART1_RX_M2	SPI3_MOSI_M2		I2C0_SDA_M2	GPIO0_D2	27	28	GPIO0_D1	I2C0_SCL_M2		SPI0_CS0_M0	UART1_TX_M2	I2S1_SDO0_M1	UART0_CTSN	25
142				SPI3_MOSI_M1	PWM13_M1	I2C5_SCL_M1	GPIO4_B6	29	30	GND
0							GPIO0_A0	31	32	GPIO4_B3	I2C7_SDA_M3	PWM15_IR_M1		UART8_CTSN_M0	I2S1_SDO2_M0		139
33			UART6_TX_M1	SPI4_MOSI_M2		I2C2_SCL_M4	GPIO1_A1	33	34	GND
53		I2S0_LRCK	UART4_RTSN			I2C2_SCL_M3	GPIO1_C5	35	36	GPIO3_D3	I2C7_SDA_M2	PWM10_M2	SPI0_CLK_M3				123
57	I2S0_SDI3	I2S0_SDO2	UART6_RX_M2	SPI1_MOSI_M2		I2C7_SDA_M0	GPIO1_D1	37	38	GPIO1_D4					I2S0_SDI0		60
							GND	39	40	GPIO1_C7	I2C4_SCL_M4			UART4_CTSN	I2S0_SDO0		55