Features
- Low-power, high-sensitivity,
environmentally robust capacitive touch buttons, sliders, wheels
- Supports wake-up on touch from power-save sleep mode
- Supports mutual capacitance and self-capacitance sensing
- Mix-and-match mutual-and
self-capacitance sensors
- One pin per electrode – no external components
- Load compensating charge sensing
- Parasitic capacitance compensation and adjustable gain for superior sensitivity
- Zero drift over the temperature and VDD range
- Auto calibration and re-calibration of sensors
- Single-shot charge measurement
- Hardware noise filtering and noise signal de-synchronization for high conducted immunity
- Driven shield for better noise immunity
and moisture tolerance
- Any PTC X/Y line can be used for the driven shield
- All enabled sensors will be driven at the same potential as the sensor
scanned
- Selectable channel change delay allows
choosing the settling time on a new channel, as required
- Acquisition-start triggered by command
or through auto-triggering feature
- Low CPU utilization through interrupt
on acquisition-complete
- Using ADC peripheral for signal conversion
and acquisition
- Supported by Atmel|START and Atmel Studio
documentation.