Hardware description
On the nRF5340 PDK board, P0.00 and P0.01 are used for the 32.768 kHz crystal by default and are not
available as GPIO on the connectors.
Note: When using ANT/ANT+
™
, the 32.768 kHz crystal (X2) is required for correct operation.
If P0.00 and P0.01 are needed as normal I/Os, the 32.768 kHz crystal can be disconnected and the
GPIO routed to the connectors. Cut the shorting track on SB1 and SB2, and solder SB3 and SB4. See the
following figure for reference.
Figure 24: Configuring P0.00 and P0.01
Figure 25: 32.768 kHz crystal and SB1–SB4
5.9 Debug input and trace
The Debug in connector (P18) makes it possible to connect external debuggers for debugging when the
interface MCU USB cable is not connected or the board is in nRF only mode.
Figure 26: Debug input and trace connectors
4406_489 v1.0
26
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