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tolerance and enhanced sensitivity, while the Boost Mode enables increased Signal to Noise Ratio (SNR) for even greater robustness against noise or reduced touch acquisition time to enable more responsive capacitive touch designs.
Key Features for Capacitive Touch
• Low CPU load with 5% CPU load scanning, 10 channels at 50 ms scan rate
• Glove support for interface applications intended for cold or harsh environments
• Driven Shield+ technology for moisture robustness and reliability even with droplets of water
• Boost Mode increases SNR or reduces touch acquisition time
• Gesture support • Touch interface options: - Buttons, sliders and wheels - 2D surface
- Proximity sensing
• Mix-and-match sensor configurations with:
- Up to 46 self-capacitance sensors
- Up to 529 mutual-capacitance sensors
• Auto calibration with zero drift over temperature and voltage The AVR DA family supports up to 46 self-capacitance and 529 mutual-capacitance touch channels, which makes the AVR DA family an excellent choice for human interface applications where multiple capacitive touch keys, sliders, wheels or 2D surface gestures are required.
Functional Safety Ready for Safety-Critical Applications The AVR DA family is recommended for safety critical applications targeting both industrial and automotive products (IEC 61508 and ISO 26262). We also offer the MPLAB® XC8 Functional Safety Compiler License, which is a TÜV SÜD certified compiler package that supports 8-bit PIC® and AVR® microcontrollers. Documents
such as FMEDA reports and safety manuals are available on request. Safety-certified development tools are also available for this product.
Getting Started
The AVR128DA48 Curiosity Nano Evaluation Kit* is the ideal platform for rapid prototyping with AVR DA MCUs. This USB-powered kit features an on-board programmer/ debugger that seamlessly integrates with MPLAB X, Atmel Studioand IAR Embedded Workbench Integrated Development Environments (IDEs). The small form factor makes the board ideal for breadboard soldering, or you can combine it with the Curiosity Nano Base for Click boards™, which features multiple mikroBUS™ sockets so you can easily add sensors, actuators or communications interfaces from Mikroelektronika’s extensive selection of Click boards.
www.microchip.com/8bit
www.electronicsworld.co.uk September/October 2020 07
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