There is one self capacitance button available on the SAM L22 Xplained Pro board that can be used as I/O. This QTouch button is intended to be driven by the built-in Peripheral Touch Controller (PTC) of the device.
| SAM L22 pin | Silkscreen text | Shared functionality |
|---|---|---|
| PB06 | QT BTN1 | SLCD |