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One-Chip Solution Combines 2.4 GHz, Low-Power Wireless and Capacitive Touch

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A single-chip solution integrates a wireless radio with touch-sensing circuitry for wireless mice, trackpads, remote controls, presenter tools and other Human Interface Devices (HIDs). The new Programmable Radio-on-a-Chip–User Interface (PRoC-UI) solution combines 2.4 GHz proprietary WirelessUSB-NL Radio with Cypress’s CapSense and TrueTouch capacitive touch technologies. This combination enables user interface functionality in wireless devices, including gestures supported by the upcoming Windows 8 applications. The one-chip solution also offers standard HID microcontroller functionality, effectively combining three chips into one to save BOM cost, board space and power, while increasing reliability compared with multi-chip implementations.

Cypress’s CapSense offers stylish interfaces and superior reliability compared to mechanical buttons. PRoC-UI is also available with Cypress’s TrueTouch touchscreen technology, enabling multiple new HID use cases with multi-finger gesture recognition, including new Windows 8 gestures. The TrueTouch variant also supports customized gestures. Both CapSense and TrueTouch variants include advanced features such as proximity sensing, which allows a device to “wake up” as a hand approaches, and haptics to give tactile user feedback.

PRoC-UI boasts -87 dBm receive sensitivity at 1 Mbit/s. This enhanced sensitivity enables longer range (up to 30 meters) operation and allows for lower-power transmit signals. The device features low active and standby currents, which enable longer battery life. It also offers superior performance in the presence of 2.4 GHz interference from common sources such as Wi-Fi, Bluetooth, cordless phones and microwaves.

PRoC-UI supports Cypress’s AgileHID protocol that allows existing WirelessUSB-NL customers to get started quickly on their designs without any additional effort. Customers who have existing designs with WirelessUSB-NL can reuse the same dongles for new PRoC-UI-based touch products. PRoC-UI comes with free software to enable end-product customization.

Cypress Semiconductor
San Jose, CA.
(408) 943-2600
www.cypress.com