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Hardware interface description

Interface overview

  • Radxa ZERO 3W ZERO 3W Overview

  • Radxa ZERO 3E ZERO 3E Overview

Power

Debug Serial Port

Ethernet Port

40 PIN GPIO

GPIO voltage

GPIOVoltageMaximum
All GPIOs3.3V3.63V
SARADC_IN53.3V3.3V

GPIO interface

Radxa ZERO 3 provides a 40-pin GPIO header, which is compatible with most SBC accessories on the market.

**Tips: Actual compatibility is based on usage **

tip

Pin 3, Pin 5, Pin 27, and Pin 28 add extra pull-up resistors for I2C device power supply, so they work abnormally when used as GPIOs.

GPIO numberFunction5Function4Function3Function2Function1Pin#Pin#Function1Function2Function3Function4Function5GPIO number
+3.3V
1
2
+5.0V
32UART3_RX_M0GPIO1_A0
3
4
+5.0V
33UART3_TX_M0GPIO1_A1
5
6
GND
116PWM14_M0GPIO3_C4
7
8
GPIO0_D1
UART2_TX_M0
25
GND
9
10
GPIO0_D0
UART2_RX_M0
24
97GPIO3_A1
11
12
GPIO3_A3I2S3_SCLK_M099
98I2S3_MCLK_M0GPIO3_A2
13
14
GND
104GPIO3_B0
15
16
GPIO3_B1UART4_RX_M1PWM8_M0105
+3.3V
17
18
GPIO3_B2UART4_TX_M1PWM9_M0106
147PWM15_IR_M1I2S3_SCLK_M1SPI3_MOSI_M1GPIO4_C3
19
20
GND
149UART9_TX_M1PWM12_M1I2S3_SDO_M1SPI3_MISO_M1GPIO4_C5
21
22
GPIO3_C1I2S1_SDO2_M2113
146PWM14_M1I2S3_MCLK_M1SPI3_CLK_M1GPIO4_C2
23
24
GPIO4_C6SPI3_CS0_M1PWM13_M1UART9_RX_M1I2S3_SDI_M1150
GND
25
26
NC
138I2C4_SDA_M0I2S2_SDI_M1GPIO4_B2
27
28
GPIO4_B3I2C4_SCL_M0I2S2_SDO_M1139
107GPIO3_B3
29
30
GND
108GPIO3_B4
31
32
GPIO3_C2UART5_TX_M1I2S1_SDO3_M2114
115UART5_RX_M1I2S1_SCLK_RX_M2GPIO3_C3
33
34
GND
100I2S3_LRCK_M0GPIO3_A4
35
36
GPIO3_A7103
36I2S1_SCLK_RX_M0GPIO1_A4
37
38
GPIO3_A6I2S3_SDI_M0102
GND
39
40
GPIO3_A5I2S3_SDO_M0101

USB C

There are two USB TYPE-C ports, one is USB 2.0 OTG port and the other is USB3.0 HOST port. The power supply is USB 2.0 OTG port.

HDMI

Provides a Micro HDMI port.

MIPI CSI

PINName
1GND
2MIPI_CSI_RX_D0N
3MIPI_CSI_RX_D0P
4GND
5MIPI_CSI_RX_D1N
6MIPI_CSI_RX_D1P
7GND
8MIPI_CSI_RX_CLK0N
9MIPI_CSI_RX_CLK0P
10GND
11MIPI_CSI_RX_D2N
12MIPI_CSI_RX_D2P
13GND
14MIPI_CSI_RX_D3N
15MIPI_CSI_RX_D3P
16GND
17CAMERAB_PDN_L
18CIF_CLKOUT
19GND
20I2C2_SCL_M1
21I2C2_SDA_M1
22VCC_3V3