Bigger library, better support

Atmel introduces version 3.0 of its royalty-free QTouch software library with up to 64 channels of touch support for all Atmel AVR microcontrollers (MCUs) and select 32-bit AVR32 UC3. Several library files are provided for each device enabling more flexible and efficient design, creating more compact code using less RAM.
The QTouch library also supports Atmel’s patented charge transfer signal acquisition technology for robust sensing on the AVR and AVR32 MCUs. This technology allows QTouch to outperform other capacitive touch sensitive acquisition methods in electrostatic discharge (ESD) and electromagnetic compatibility (EMC), overlay thickness and signal-to-noise ratio. The QTouch library, combined with Atmel’s AVR development tools, can now provide a fast, easy path to a reliable, high-quality touch interface for our designers.

‘Our customers continue to require software support for all AVR microcontrollers, especially for touch buttons, sliders and wheels solutions,’ said Arild Rodland, AVR Product Marketing Manager, Atmel Corporation. ‘The release of the new QTouch Library allows us to offer our customers superior touch technology for the full range of AVR and selected AVR32 UC3 devices. Furthermore, our customers can now select our tinyAVR, megaAVR, XMEGA(TM), AVR32 UC3A or UC3B device and add touch functionality easily to their design.’

The QTouch library consists of pre-compiled object code binaries which can be configured individually as touch keys or combined in groups to form sliders or navigation functionality. The QTouch Library also allows full user customization and optimization of the touch function. The precompiled software libraries come with a defined application programming interface (API) that ensures easy integration with the customer code and is well suited for applications requiring a limited number of touch channels. It also offers a quick, easy solution for customers who want to embed touch functionality in their existing AVR microcontroller designs.