MTouch Technology For Mobile Handheld Units

Microchip Technology has launched mTouch Projected Capacitive Touch-Screen Sensing Technology for applications including mobile handheld units, global positioning systems and thermostats. The release supports projected capacitive touch-screen solutions across the company's portfolio of 8-, 16- and 32-bit PIC MCUs. The launch is supported by the mTouch Projected Capacitive Development Kit, featuring the 8-bit PIC16F707.

Projected capacitive touch-sensing extends resistive and existing capacitive touch-sensing technology to include multi-touch and gesture sensing, enabling users to implement robust glass-front user interfaces that simplify user interaction. The technology is available via a royalty-free source code license from Microchip's online Touch Sensing Design Centre. The mTouch Projected Capacitive Development Kit includes a 3.5in sensor mounted on a sensor board, a projected capacitive board with the PIC16F707 MCU and fully functional firmware.

The open source code supports sensors with up to 32 channels and the kit includes a graphical user interface tool that enables easy parameter adjustment. The PIC16F707 features two 16-channel capacitive sensing modules that can run in parallel for increased sampling speed, and operates from a wide input voltage range of 1.8-5.5V, with a typical projected capacitive sensor application operating current of 1.5mA at 5V.

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