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Atmel XSense Touch Sensor AT42QT2120 descriptions:
The Atmel® AT42QT2120 is a capacitive touch controller with 12 configurable Atmel QTouchADC buttons, sliders and wheels. The QTouchADC sensing algorithm (self capacitance) enables the user to achieve longer-range proximity sensing. This capability makes the device ideal for any type of proximity-sensing application, including wake-up, thermostat, TV controls, wireless mouse, etc. This reduces the total power consumption of your device and results in a more intuitive and differentiated user interface.
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