Capacitive touch and 5-channel 10-bit ADC — peripheral set for human-interface designs
The integrated Cap Sense peripheral handles capacitive-touch buttons, sliders, and proximity sensing without external charge-converter ICs — a BOM saving of a few dollars in volume. The 5-channel 10-bit ADC reads analog sensors or battery voltage directly. The internal oscillator frees up a pin and a crystal slot, though you'll still want a clean supply for the ADC reference.
The brown-out detect and POR ensure clean reset on power-up or battery sag; the watchdog timer guards against firmware hangs.