Features
- Low-power,
high-sensitivity, environmentally robust capacitive touch buttons, sliders, wheels and
proximity sensing
- Supports wake-up on touch from standby 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 and free-running charge measurement
- Hardware noise filtering and noise signal de-synchronization for high conducted immunity
- 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
- Supported by the Atmel®
QTouch® Composer development tools. See also Atmel|Start and Atmel Studio documentation.