1.1 Cap Touch Click Board
The Cap Touch Click Board processes a touch into an electrical signal by using the Microchip AT42QT1010 Single-Key capacitive touch controller operating in Low Power mode. When the chip detects a button press, the Fast Detect Integrator is enabled until an output signal is sent. The output signal is sent after four successive detections using the detect integrator. The output signal is sent to the Click board’s INT pin, and is also used to power an on-board LED though a MOSFET.
For more information about the AT42QT1010 touch controller, please visit the AT42QT1010 capacitive touch controller product page.