New Cypress touchscreen controllers double the industry's best noise immunity

December 10, 2012

Toni_McConnel-December 10, 2012

The new TrueTouch Gen4X touchscreen controllers from Cypress Semiconductor Corp. offer the industry’s highest noise immunity, according to the company, and were designed for cost-sensitive platforms, including models for the rapidly growing China smartphone market. The new controllers support both in-cell and SLIM single-layer structures to meet system-level price points needed to drive high volumes in emerging markets. Cypress states that Gen4X provides the world’s most robust immunity to charger noise: up to 15V peak-to-peak (Vpp) from 1 – 500 kHz, with a 0.5-mm cover lens and a 22-mm-wide finger.

Gen4X employs a 32-bit ARM Cortex core to deliver the best combination of speed and low-power consumption. The family delivers a refresh rate of 150 Hz, and a deep-sleep mode that draws only 4.5 uW with wake-up initiated via address match on the COM port.

Gen4X devices offer up to 36 capacitive sensing I/Os for ideal sensor pitch with screens up to 5 inches, support standalone CapSense touch-sensing buttons, and drive both in-cell structures and SLIM single-layer sensors. Gen4X is the first toucschreen controller family to bring Superphone performance to emerging markets.

The Gen4X family will be available in a 44-pin 5 mm x 5 mm QFN with 28 sense I/Os, a 44-pin 5 mm x 5 mm QFN with 33 sense I/Os, and a 48-pin 6 mm x 6 mm QFN package with 36 sense I/Os..

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