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 1. QTouch Connection
Pin on WLR089U0 Module Silkscreen Text Shared Functionality
PA06 QT BTN1 EXT1
Parent topic: Hardware User Guide