Touchscreen controllers offers best noise immunity
The TrueTouch Gen4 touchscreen controllers offer an immunity to charger noise of up to 15 V peak-to-peak (Vpp) from 1 to 500 kHz, with a 0.5-mm cover lens and a 22-mm-wide finger. The parts support both in-cell and SLIM single-layer structures to meet system-level price points needed to drive high volumes in emerging markets.
Features include a 32-bit ARM Cortex core, a refresh rate of 150 Hz, and a deep-sleep mode that only draws 4.5 µW with wake-up initiated via address match on the COM port. In addition, they 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 also delivers multitouch functionality with customizable advanced features, including waterproofing capability. The family will be available in a 44-pin 5 x 5 mm QFN with 28 sense I/Os, a 44-pin 5 x 5 mm QFN with 33 sense I/Os, and a 48-pin 6 x 6 mm QFN package with 36 sense I/Os. (Contact company for pricing — prod qty, 1st qtr 2013)
By Christina Nickolas
Cypress Semiconductor , San Jose , CA
Sales 408-943-2600
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