nRF9160 DK v1.0.0

Switches for buttons and LEDs

On the nRF9160 DK, there are a few analog switches that are used to connect and disconnect signals to control buttons, switches, and LEDs.

The analog switches select if the LEDs, buttons, and switches should be connected directly to the nRF9160 GPIO or to an I/O expander. See I/O expander for more information. The switches are controlled by the nRF52840, which contains firmware from Nordic Semiconductor.

Figure 1. LED switch control
Schematic: LED switch control