The XMEGA-A3BU Xplained kit has one QTouch button and the connection to the XMEGA
is shown in the table below. The QTouch sensor, a copper fill, is located on the
second layer of the board (same as GND layer). The sensor is shielded by the third
layer (VCC layer) and therefore the sensor is not affected by any touches from the
back side of the board.
Table 1. QTouch button connection| Pin on XMEGA |
QTouch library button name |
|---|
| PF6 |
SNS |
| PF7 |
SNSK |