The SAM4L features a user-friendly capactive touch module. This integrated capacitive touch module handles the signal acquisition and data processing. It is interfaced like any other microcontroller peripheral. Sensors can be configured in any way the user sees fit: as buttons, sliders and wheels (or any combination thereof). All touch activity is event driven; so when touch is detected it is an event and when it is released it is an event. The result is autonomous interrupts and autonomous processing. This in turn gives higher efficiency and lower power consumption. The hardware capacitive touch module is fully integrated into the peripheral event system as well as the SleepWalking system. This is allows the system to be woken up by a touch or proximity.