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Safety platform aimed at capacitive touch home appliances

Posted: 12 Nov 2014 ?? ?Print Version ?Bookmark and Share

Keywords:Atmel? home appliance? safety platform? capacitive touch?

Atmel Corp. has introduced the QTouch safety platform aimed at capacitive touch-enabled user interfaces for home appliances. The platform features mandatory safety and supports the Atmel | SMART ARM Cortex-M0+ based MCUs for safety critical home appliance applications, stated the company.

The most recent QTouch capacitive touch platform is based on the Atmel | SMART SAM D20 integrating an on-chip peripheral touch controller (PTC) to deliver excellent EMC robustness, short response times and combines self- and mutual capacitance sensors for up to 256 channels.

Atmel's QTouch safety platform is pre-qualified for the VDE/UL 60730 Class B and UL 1998 certifications, reducing a designer's overall development time by as much as twelve months. Household appliance designers can now focus on more innovative, easy-to-use interfaces that support capacitive touch buttons, sliders and wheels on an Atmel | SMART ARM Cortex M0+-based MCU rather than focusing on safety certification features, noted the company. The SAM D20 ARM-based Cortex M0+-based MCU claims to be the first device to support the QTouch safety library. Support for future home appliance devices will be added as they become available.

Designers can download the QTouch Safety Library Firmware, FMEA library and QTouch Composer Development Software on an Atmel ARM Cortex M0+-based MCU. The QTouch Safety Library ensures excellent noise tolerance through dynamic hardware and firmware noise filtering through the IEC 61000-4-6 10V conducted immunity with minimal design effort. Additionally, QTouch safety platform provides FMEA support and moisture tolerance.

To help accelerate a designer's development, the QTouch safety platform offers easy-to-use software and hardware tools, said Atmel. The QTouch Safety Library and QTouch Composer is available free of charge in the Atmel Gallery.

The SAM D20 QTouch robustness demo is available in the Atmel Store for $149. The SAM D20 QTouch robustness demo provides an evaluation and demo. The kit comes pre-loaded with a pre-qualified 60730 Class B software that can be easily re-programmed and debugged using the embedded debugger. The kit passes all standard home appliance EMC tests.

In addition to the SAM D20 QTouch robustness demo, the QTouch safety platform can be explored using the Xplained Pro evaluation platform. The SAM D20 Xplained Pro evaluation board is available for $39, while the QT1 Xplained Pro adding QTouch support is available for $25.

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