Self-capacitance Sensor Arrangement

The self-capacitance sensor is connected to a single pin on the Peripheral Touch Controller through the Y electrode for receiving the signal. The sense electrode capacitance is measured by the Peripheral Touch Controller.

Figure 1. Self-capacitance Sensor Arrangement

For more information about designing the touch sensor, refer to Buttons, Sliders and Wheels Touch Sensor Design Guide on http://www.atmel.com.