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Atmel Targets Portable Devices with Low-power, Flexible Single-key Capacitive Touch Controllers

9th February 2010
ES Admin
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Atmel announced a new family of single-key touch controllers for the portable device market. This new family offers designers power consumption of below 17 µA for next-generation portable touch devices, including power buttons, hearing devices, consumer toys and proximity sensors. The embedded low-power features in Atmel's new family of single-key touch controllers also enable longer battery life for these portable devices.
Based on Atmel's patented QTouch® capacitive touch technology for buttons, wheels and sliders, the new family of single-key capacitive touch controllers offers a better response time. This feature allows mobile touch devices to 'wake-up' faster than products currently on the market today. When a key touch is detected, these devices will temporarily switch to a 12.6 ms fast response mode, allowing additional touches to be detected quickly.

As next-generation mobile touch devices demand faster, smaller and lower system cost designs, these new touch controllers address every aspect of a designer's needs. By offering a faster wake time, these new products will also address devices in the cost-sensitive, high-volume markets, said Jon Kiachian, sr. director of touch products at Atmel Corporation. This introduction further demonstrates how Atmel leverages its microcontroller expertise for the touch technology markets.
Similar to all Atmel touch technology devices, the AT42QT101X family uses spread spectrum modulation to ensure excellent electromagnetic compatibility (EMC). The integrated circuits (ICs) automatically calibrate when powered up. The device will also stay calibrated, even with moisture build-up or other contaminants on the touch surface. With Atmel's touch controllers, the touch surface remains reliable throughout its lifetime.

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