nRF21540 DK v1.0.0

Connector interface

Access to the nRF52840 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 nRF21540 DK.

Figure 1. nRF21540 DK connectors
nRF21540 DK (PCA10112) connectors

Some of the signals are also available on connectors P7, P8, P9, P10, P11, and P12, which are on the bottom side of the Development Kit (DK). By mounting pin lists on the connector footprints, the nRF21540 DK can be used as a shield for Arduino motherboards (only 3.3 V Arduino boards) 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 P13P17.


Some pins have default settings:

When the nRF21540 DK is used as a shield together with an Arduino standard motherboard, the Arduino signals are routed as shown in the following figure.

Figure 2. Arduino signals routing on the nRF21540 DK
Arduino signals routing on the nRF21540 DK (PCA10112)