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 [[Zero | Radxa Zero]] > [[zero/hardware | Hardware]] > [[zero/hardware/gpio | GPIO]]


{| class="wikitable" style="vertical-align:middle; background-color:#F9F9F9;"
|- style="font-weight:bold; text-align:center; background-color:#F2F2F2;"
! GPIO number
! Function4
! Function3
! Function2
! Function1
! Pin#
! 
! Pin#
! Function1
! Function2
! Function3
! Function4
! GPIO number
|-
| 
| 
| 
| 
| +3.3V
| style="background-color:#FF0;" | 1
| 
| style="background-color:#F00;" | 2
| +5.0V
| 
| 
| 
| 
|-
| 490
| 
| 
| I2C_EE_M3_SDA
| GPIOA_14
| style="background-color:#008000; color:#FFF;" | 3
| 
| style="background-color:#F00;" | 4
| +5.0V
| 
| 
| 
| 
|-
| 491
| 
| 
| I2C_EE_M3_SCL
| GPIOA_15
| style="background-color:#008000; color:#FFF;" | 5
| 
| style="background-color:#000; color:#FFF" | 6
| GND
| 
| 
| 
| 
|-
| 415
| I2C_AO_S0_SDA
| UART_AO_B_RX
| I2C_AO_M0_SDA
| GPIOAO_3
| style="background-color:#008000; color:#FFF;" | 7
| 
| style="background-color:#008000; color:#FFF;" | 8
| GPIOAO_0
| style="background-color:#FFA500;" | UART_AO_A_TXD
| 
| 
| 412
|-
| 
| 
| 
| 
| GND
| style="background-color:#000; color:#FFF" | 9
| 
| style="background-color:#008000; color:#FFF;" | 10
| GPIOAO_1
| style="background-color:#FFA500;" | UART_AO_A_RXD
| 
| 
| 413
|-
| 414
| I2C_AO_S0_SCL
| UART_AO_B_TX
| I2C_AO_M0_SCL
| GPIOAO_2
| style="background-color:#008000; color:#FFF;" | 11
| 
| style="background-color:#008000; color:#FFF;" | 12
| GPIOX_9
| SPI_A_MISO
| 
| 
| 509
|-
| 503
| 
| I2C_EE_M1_SCL
| SPI_A_SCLK
| GPIOX_11
| style="background-color:#008000; color:#FFF;" | 13
| 
| style="background-color:#000; color:#FFF" | 14
| GND
| 
| 
| 
| 
|-
| 
| 
| 
| 
| SARADC_CH1
| style="background-color:#008000; color:#FFF;" | 15
| 
| style="background-color:#008000; color:#FFF;" | 16
| GPIOX_10
| SPI_A_SS0
| I2C_EE_M1_SDA
| 
| 502
|-
| 
| 
| 
| 
| +3.3V
| style="background-color:#FF0;" | 17
| 
| style="background-color:#008000; color:#FFF;" | 18
| GPIOX_8
| SPI_A_MOSI
| PWM_C
| 
| 500
|-
| 447
| 
| SPI_B_MOSI
| UART_EE_C_RTS
| GPIOH_4
| style="background-color:#008000; color:#FFF;" | 19
| 
| style="background-color:#000; color:#FFF" | 20
| GND
| 
| 
| 
| 
|-
| 448
| PWM_F
| SPI_B_MISO
| UART_EE_C_CTS
| GPIOH_5
| style="background-color:#008000; color:#FFF;" | 21
| 
| style="background-color:#008000; color:#FFF;" | 22
| GPIOC_7
| -
| 
| 
| 475
|-
| 450
| I2C_EE_M1_SCL
| SPI_B_SCLK
| UART_EE_C_TX
| GPIOH_7
| style="background-color:#008000; color:#FFF;" | 23
| 
| style="background-color:#008000; color:#FFF;" | 24
| GPIOH_6
| UART_EE_C_RX
| SPI_B_SS0
| I2C_EE_M1_SDA
| 449
|-
| 
| 
| 
| 
| GND
| style="background-color:#000; color:#FFF" | 25
| 
| style="background-color:#008000; color:#FFF;" | 26
| SARADC_CH2
| 
| 
| 
| 
|-
| 415
| I2C_AO_S0_SDA
| UART_AO_B_RX
| I2C_AO_M0_SDA
| GPIOAO_3
| style="background-color:#00F; color:#FFF;" | 27
| 
| style="background-color:#00F; color:#FFF;" | 28
| GPIOAO_2
| I2C_AO_M0_SCL
| UART_AO_B_TX
| I2C_AO_S0_SCL
| 414
|-
| 
| 
| 
| 
| NC
| style="background-color:#008000; color:#FFF;" | 29
| 
| style="background-color:#000; color:#FFF" | 30
| GND
| 
| 
| 
| 
|-
| 
| 
| 
| 
| NC
| style="background-color:#008000; color:#FFF;" | 31
| 
| style="background-color:#008000; color:#FFF;" | 32
| GPIOAO_4
| PWMAO_C
| 
| 
| 416
|-
| 
| 
| 
| 
| NC
| style="background-color:#008000; color:#FFF;" | 33
| 
| style="background-color:#000; color:#FFF" | 34
| GND
| 
| 
| 
| 
|-
| 420
| 
| 
| UART_AO_B_TX
| GPIOAO_8
| style="background-color:#008000; color:#FFF;" | 35
| 
| style="background-color:#008000; color:#FFF;" | 36
| GPIOH_8
| -
| 
| 
| 451
|-
| 421
| 
| 
| UART_AO_B_RX
| GPIOAO_9
| style="background-color:#008000; color:#FFF;" | 37
| 
| style="background-color:#008000; color:#FFF;" | 38
| GPIOAO_10
| PWMAO_D
| 
| 
| 422
|-
| 
| 
| 
| 
| GND
| style="background-color:#000; color:#FFF" | 39
| 
| style="background-color:#008000; color:#FFF;" | 40
| GPIOAO_11
| PWMAO_A
| 
| 
| 423
|}

== GPIO number ==
* GPIO are in two banks, GPIO AO domain and GPIO EE domain
** AO domain: GPIOAO_0 - GPIOAO_11
** EE domain: GPIOA_14 - GPIOA_15 | GPIOH_0 - GPIOH_8 | GPIOX_0 - GPIOX_19 
* UARTs
** AO domain: UARTAO_A | UARTAO_B
** EE domain: UART_A | UART_B | UART_C