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Touchscreen controller supports single-layer multi-touch sensors

20 Aug 2014

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Cypress Semiconductor Corp. has unveiled a touchscreen controller family that supports single-layer multi-touch sensors, which lower manufacturing costs without compromising performance. According to the company, the Gen4X TMA445 controller enables thin form factors by leveraging Cypress' Single-Layer Independent Multi-touch (SLIM) sensor structures, and also adds support for Cypress' tracking of multiple fingers in gloves.

The TrueTouch Gen4X TMA445 controller claims to deliver best-in-class accuracy and linearity for fingers of different sizes and gloves of various materials and thicknesses including ski gloves. In addition, it automatically switches between glove and finger tracking without requiring the user to switch settings. Gen4X controllers provide industry-leading water tolerance and best-in-class immunity to electronic noise from aftermarket chargers and displays.

Gen4X TMA445 controller

Cypress' TrueTouch Gen4X family delivers immunity to charger noise of up to 35V peak-to-peak (Vpp) from 1-500kHz, with a 0.5mm cover lens and a 9mm-wide finger. With Cypress' patented DualSense technology to execute both self-capacitance and mutual-capacitance measurements in the same device, the family offers the industry's best water rejection and wet finger tracking for seamless performance in real-world conditions including the presence of rain, condensation or sweat, flaunted the company.

The Gen4X family is based on a 32bit ARM Cortex M-Core processor that is known for high-efficiency MIPS/mW. The TMA445 controller averages low power consumption of 12mW in active mode and 15uW in deep-sleep mode, the company indicated.

The Gen4X TMA445 controller with SLIM is available to lead customers. The controller is available in mobile-friendly 44-pin and 48-pin QFN packages.

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