Transcription of Atmel QTouch Safety Library USER GUIDE
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Atmel QTouch Safety Library USER GUIDE
Atmel -42230G-SAM- Atmel -SAMD- QTouch -Safet y- Library -UserGuide_07/2016 DescriptionAtmel QTouch Peripheral Touch Controller (PTC) offers built-in hardware forbuttons, sliders, and wheels. PTC supports both mutual and self capacitancemeasurement without the need for any external component. It offers superbsensitivity and noise tolerance, as well as self-calibration and minimizes thesensitivity tuning effort by the PTC is intended for acquiring capacitive touch sensor signals. The externalcapacitive touch sensor is typically formed on a PCB, and the sensor electrodesare connected to the analog charge integrator of the PTC using the device I/Opins. The PTC supports mutual capacitance sensors organized as capacitivetouch matrices in different X-Y configurations, including Indium Tin Oxide (ITO)sensor grids. In mutual capacitance mode, the PTC requires one pin per X line(drive line) and one pin per Y line (sense line). In self capacitance mode, the PTCrequires only one pin with a Y-line driver for each self-capacitance PTC supports two sets of libraries, the QTouch Library and the QTouchSafety Library .
Atmel-42230G-SAM-Atmel-SAMD-QTouch-Safety-Library-UserGuide_07/2016 Description Atmel® QTouch® Peripheral Touch Controller (PTC) offers built-in hardware for buttons, sliders, and wheels. PTC supports both mutual and self capacitance
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