Access to the nRF5340 General-Purpose Input/Output (GPIO)s is available from connectors P2, P3, P4, P5, P6, and P24.
The P1 connector provides access to ground and power on the nRF5340 DK.
Some of the signals are also available on connectors P7, P8, P9, P10, P11, and P12, located on the back side of the Development Kit (DK). By mounting pin lists on the connector footprints, the nRF5340 DK can be used as a shield for 3.3 V Arduino motherboards or other boards that follow the Arduino standard.
For easy access to GPIO, power, and ground, the signals can also be found on the through-hole connectors P13–P17.
The following are default pin settings:
- P0.00 and P0.01 are used for the 32.768 kHz crystal and are not available on the connectors. See 32.768 kHz crystal for more information.
- P0.19, P0.20, P0.21, and P0.22 are used by the Universal Asynchronous Receiver/Transmitter (UART) connected to the interface MCU. See Virtual serial ports for more information.
- P0.02 and P0.03 are by default used by signals NFC1 and NFC2. See NFC antenna interface for more information.
- P0.08–P0.09 and P0.23–P0.24 are by default connected to the buttons and P0.28–P0.31 are connected to the LEDs. See Buttons and LEDs for more information.
- P0.13–P0.18 are by default connected to the external memory. For more information, see External memory.
When the nRF5340 DK is used as a shield together with an Arduino standard motherboard, the Arduino signals are routed as shown in the following figure.
