First single chip touchscreen controller for 15in screens and above
The first device in the family, the mXT2952T, is the world’s first ultra-low power single-chip device that supports Windows 8-certified touchscreens up to 15.6 inches and optimized to support touchscreen cover glass as thin as 0.4mm. It also supports Atmel’s copper-based Xsense technology that supports curved and ‘bezel free’ touchscreens.
The new T Series supports a new adaptive-sensing architecture featuring both mutual and self capacitance to optimize performance, including support for gloved hands in industrial applications. The controller automatically selects the best sensing architecture, seamlessly switching to enable higher performance and lower power consumption. It uses a 32bit AVR controller core rather than a general purpose ARM core.
Mutual capacitance enables true multitouch tracking while self capacitance offers benefits including idle power consumption, moisture immunity, glove tracking, and hover capability which detects a finger or an object not in contact with the screen. The T Series also enhances noise immunity with an industry-first capacitive touch dual analog and digital filtering architecture to deliver the best signal-to-noise (SNR) ratio and power consumption.
The new features in the T Series deliver improved responsiveness and a more intuitive user interface with additions such as hover that allow users to pre-select icons, letters, links and other images without physically touching the screen. The controller also integrates Atmel’s proprietary maXFusion sensor hub management technology that enables designers to manage both the touch interface and all the sensor intelligence in a single chip. This technology enables lower bill of materials and higher performance.
“Flawless touch performance, longer battery life and thinner screens for mobile devices are key features for today’s touchscreen designs,” said Jon Kiachian, Vice President of Touch Marketing at Atmel. “As a leader in touch technologies, the maXTouch T Series is Windows 8 compatible, Intel Ultrabook-ready, and supports both active stylus and sensor hub. We are a leader in this space, and excited to deliver the mXT2952T, the world’s first single-chip controller for Windows 8-certified touchscreens up to 15.6 inches.” Larger screens can be supported for other operating systems by loosening the pixel requirements.
With the increasing popularity of active stylus on touchscreens, the maXTouch T Series natively supports Atmel’s maXStylus, a solution that requires no additional sensor layer to enable thinner stack-ups and lower overall bill of materials (BOM).
Atmel’s maXTouch mXT2952T device is sampling now with other members of the family sampling throughout the year.
www.atmel.com
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