3.3.4 QTouch Button

The WLR089 Xplained Pro Evaluation board contains a self-capacitance button, which can be used as an I/O. This QTouch button is intended to be driven by the built-in Peripheral Touch Controller (PTC) of the device. A 10 kΩ series resistor on the I/O line to the QTouch button can be used to disconnect the QTouch button from the extension header 1 because the QTouch button and extension header 1 (EXT1) share the I/O line.

Note: To get started with QTouch, refer to the QTouch® Library and QTouch® Composer.
Table 3-8. QTouch Connection
Pin on WLR089U0 ModuleSilkscreen TextShared Functionality
PA06QT BTN1EXT1