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Touch solutions meet AEC-Q100 automotive standards

Posted: 20 May 2010 ?? ?Print Version ?Bookmark and Share

Keywords:touchscreen? touch-sensing controller? touch sensor? automotive?


Cypress Semiconductor Corp. announced that its TrueTouch touchscreen and LIN capable CapSense touch-sensing controllers meet AEC-Q100 automotive standards. The TrueTouch controllers are claimed to be the first automotive-qualified capacitive touchscreen solution. The CY8C2x345 CapSense controllers pair analog resources with automotive industry standard LIN communication support, making the devices the suitable system controllers to interface with analog and capacitive touch-sensor inputs, and to control backlight LEDs and haptic actuators while communicating over the LIN bus.

The new automotive-qualified TrueTouch controllerswhich are available in single-touch, multi-touch gesture and multi-touch all-point offeringsprovide the ability to track multiple fingers simultaneously. The TrueTouch solutions are able to control screen sizes up to nine inches. They are designed for use in control panels, GPS and infotainment displays.

Cypress's automotive-qualified CapSense devices enable attractive, highly functional interfaces with improved durability over mechanical buttons and sliders. In addition, their industry-leading reliability, noise-immunity and water-resistance deliver superior performance in the harsh automotive operating environment. CapSense proximity sensing offers a detection range up to 25cm, saving power by activating an interface only when needed. The devices are well-suited for interior automotive applications such as audio, navigation, AC control and lighting control, as well as exterior applications such as trunk release and passive keyless-entry buttons.

"We are excited to bring Cypress's market-leading capacitive touch interface portfolio to the automotive market with AEC-Q100 qualification of our devices," said Hassane El-Khoury, automotive business unit manager at Cypress. "This is a result of our focus and investment in the automotive segment which has created a dedicated business unit and a quality organization with a zero defect mindset. Our CY8C21X34 CapSense devices are already in production with some of the world's top automobile manufacturers. We are building upon this proven success with our newly qualified TrueTouch and LIN-capable CapSense devices that bring sleek human machine interfaces into next-generation vehicles."

Cypress's newly automotive-qualified CapSense devices offer dual-channel scanning, delivering faster scan times for multiple IOs. These devices offer automotive industry standard LIN 2.0 and 2.1 communication support. Cypress offers two types of the automotive devices: A grade (-40C to +85C) and E grade (-40C to +125C). Available on-chip analog resources include a SAR ADC.

Cypress's TrueTouch solution is the industry's most flexible touchscreen architecture, allowing designers to implement differentiated features and make last-minute design iterations without board changes. They have a choice of using touch sensors (glass or film) and LCDs from preferred partners, and can develop innovative mechanical designs ranging from flat to curved surfaces of varying thickness. In addition, TrueTouch devices offer Cypress's legendary noise immunity with patented capacitive sensing technology that enables flawless operation in noisy RF and LCD environments.

The newly qualified CY8CTMG120 multi-touch gesture and CY8CTMA120 multi-touch all-point controllers are available for sampling in 56-pin QFN packages. The newly qualified CapSense products include the LIN-capable CY8C2x345 devices, available for sampling in A grade (-40C to +85C) in 28-pin SSOP packages with the 48-pin SSOP packages planned in Q3 10. All products are expected to be in full production in Q3 10.

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