The pin assignments for the nRF5340 System on Chip (SoC) are listed in the pin map table.
The following table describes the pin numbers, their label names, and their functions.
| I/O | Label | Description |
|---|---|---|
| P0.00 | XL1 | Low frequency crystal |
| P0.01 | XL2 | Low frequency crystal |
| P0.02 | BUTTON1/NFC1 | Button 1 / Near Field Communication (NFC) antenna (Not used) |
| P0.03 | BUTTON2/NFC2 | Button 2 / NFC antenna (Not used) |
| P0.04 | BUTTON3 | Button 3 |
| P0.05 | BUTTON5 | Button 5 |
| P0.06 | BUTTON4 | Button 4 |
| P0.07 | RGB1_LED_RED | Red color of the RGB LED 1 |
| P0.08 | SPI_SCK | Serial Peripheral Interface (SPI) clock to hardware codec and microSD card |
| P0.09 | SPI_MOSI | SPI data output to hardware codec and microSD card |
| P0.10 | SPI_MISO | SPI data input from hardware codec and microSD card |
| P0.11 | MICRO_SD_CS | SPI chip select signal for microSD card |
| P0.12 | HW_CODEC_MCLK | Master clock of hardware codec |
| P0.13 | HW_CODEC_DIN | Audio serial port data input of hardware codec |
| P0.14 | HW_CODEC_BCLK | Audio serial port bit clock of hardware codec |
| P0.15 | HW_CODEC_DOUT | Audio serial port data output of hardware codec |
| P0.16 | HW_CODEC_FSYNC | Audio serial port frame sync of hardware codec |
| P0.17 | HW_CODEC_CS | SPI chip select signal for hardware codec |
| P0.18 | HW_CODEC_RESET | Digital reset input of hardware codec |
| P0.19 | HW_CODEC_IQR | Interrupt request (IRQ) output of hardware codec |
| P0.20 | HW_CODEC_GPIO | Interrupt request (IRQ) output of hardware codec |
| P0.21 | HW_CODEC_SELECT | Interrupt request (IRQ) output of hardware codec |
| P0.22 | SPI_SELECT | Input from FTDI chip when FTDI has taken control of the hardware codec SPI lines |
| P0.23 | PMIC_ISET | Current limit set pin for the nPM1100 PMIC |
| P0.24 | BOARD_ID_EN | Enable signal for the resistor voltage divider for version identification |
| P0.25 | RGB_LED1_GREEN | Green color of the RGB LED 1 |
| P0.26 | RGB_LED1_BLUE | Blue color of the RGB LED 1 |
| P0.27 | BOARD_ID | Enable signal for the resistor voltage divider for version identification |
| P0.28 | RGB_LED2_RED | Red color of the RGB LED 2 |
| P0.29 | RGB_LED2_GREEN | Green color of the RGB LED 2 |
| P0.30 | RGB_LED2_BLUE | Blue color of the RGB LED 2 |
| P0.31 | LED1 | LED 1 (Blue) |
| P1.00 | LED2 | LED 2 (Green) |
| P1.01 | LED3 | LED 3 (Green) |
| P1.02 | SDA | Data signal for current-shunt monitor devices |
| P1.03 | SCL | Clock signal for current-shunt monitor devices |
| P1.04 | UART1_RXD | Data input signal of serial port 1 |
| P1.05 | UART1_TXD | Data output signal of serial port 1 |
| P1.06 | UART1_CTS/MIC_DOUT | Clear to send signal of serial port 1 / Optional connection to DOUT signal of digital microphone |
| P1.07 | UART1_RTS | Request to Send signal of serial port 1 |
| P1.08 | UART2_RXD | Data input signal of serial port 2 |
| P1.09 | UART2_TXD | Data output signal of serial port 2 |
| P1.10 | UART2_CTS | Clear to send signal of serial port 2 |
| P1.11 | UART2_RTS | Request to send signal of serial port 2 |
| P1.12 | D10 | Routed to connector P4 |
| P1.13 | D9 | Routed to connector P4 |
| P1.14 | D5 | Routed to connector P3 |
| P1.15 | CURR_MON_ALERT | Alert signal from current-shunt monitor devices |