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Cypress debuts automotive capacitive touchscreen controllers

Posted: 07 Oct 2015     Print Version  Bookmark and Share

Keywords:Cypress Semiconductor  touchscreen controller  automotive  capacitive  ARM Cortex 

Cypress Semiconductor Corp. has rolled out a line-up of automotive capacitive touchscreen controllers that enables screen sizes up to 15in to support harsh environments. The Automotive TrueTouch CYAT8168X controller uses Cypress' proprietary AutoArmor technology for robust immunity to the strong electromagnetic interference (EMI) emissions found in cars, busses and trucks, stated the company.

The controller claims to deliver a flawless user experience even with water droplets, condensation or sweat on the touchscreen. Additionally, the controllers provide industry-leading tracking of fingers in gloves, allowing drivers to operate the touchscreen without having to take off their gloves.

Cypress AutoArmor meets car manufacturers' most challenging electromagnetic compatibility (EMC) requirements for chip-level emissions (IEC 61967), conducted (IEC 62132) and radiated (ISO 11452) immunity, as well as for system-level (CISPR 25) specifications. AutoArmor uses automatic frequency hopping to prevent false touches caused by EMI from other electronic systems, and it uses TX frequency spreading to reduce electromagnetic emissions by up to 30 per cent, noted Cypress. In addition to AutoArmor, the controller includes up to 88 I/Os with a host processor interface through I2C or SPI that help improve touchscreen responsiveness.

Automotive TrueTouch CYAT8168X controller

The Automotive TrueTouch CYAT8168X controller family promises best-in-class accuracy and linearity for fingers of different sizes and gloves of various materials and thicknesses including ski gloves, and automatically switches between glove and finger tracking without requiring the drivers to switch settings. With Cypress' unique and patented DualSense technology to execute both self-capacitance and mutual-capacitance measurements in the same device, the family claims to offer the industry's best water rejection and wet finger tracking for seamless performance in real-world conditions including the presence of water droplets, condensation or sweat. The controllers are based on a 32bit ARM Cortex M-Core processor that is known for high-efficiency MIPS/mW. The TrueTouch portfolio's unique features are backed by a portfolio of more than 100 capacitive touch sensing patents.

The Automotive TrueTouch CYAT8168X controllers are sampling, with AEC-Q100 fully automotive-qualified products expected in 1Q16. The controllers are available in automotive-friendly 128-pin and 100-pin TQFP packages.

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