ATSAMC20-QTRDEMO Microchip

SMART ARM-based Microcontrollers SAM C20 QTouch Robustness Demo USER GUIDE Description The Atmel SMART SAM C20 QTouch Robustness Demo demonstrates the high performance capacitive touch support of the Peripheral Touch Controller (PTC) while achieving best-in-class conducted immunity and moisture tolerance. The demo implements a robust solution that allows customers to easily incorporate the Atmel QTouch technology into designs that require a high level of noise immunity and moisture tolerance. Features Four self-capacitance buttons with Philipp Spring One self-capacitance slider using six Philipp Spring One seven segment LED to display slider position Buzzer for audio feedback On-board Embedded Debugger module for programming/debugging and QDebug data streaming Connectivity with the Atmel QTouch Analyzer Atmel-42525A-SAM-C20-QTouch-Robustness-Demo User Guide-09/2015Table of Contents Description.......................................................................................................................1 Features.......................................................................................................................... 1 1. Overview....................................................................................................................4 2. Hardware Description................................................................................................ 5 2.1. Block Diagram ............................................................................................................................. 5 3. Pin Configuration....................................................................................................... 6 3.1. Self Capacitance.......................................................................................................................... 6 3.2. Indication...................................................................................................................................... 6 3.3. Communication Interface..............................................................................................................7 4. Unit Assembly............................................................................................................8 5. Powering Up the Kit...................................................................................................9 6. Embedded Debugger (EDBG).................................................................................10 7. Connecting to QTouch Analyzer.............................................................................. 12 8. Switch Operation..................................................................................................... 14 8.1. Noise Handling........................................................................................................................... 14 8.2. Moisture Tolerance..................................................................................................................... 14 9. Board Operation...................................................................................................... 15 9.1. Product Layout........................................................................................................................... 15 9.2. Lock Button.................................................................................................................................15 9.3. Button Description...................................................................................................................... 15 9.3.1. Minus Button................................................................................................................15 9.3.2. Plus Button.................................................................................................................. 15 9.3.3. Power Button............................................................................................................... 16 9.3.4. Slider Sensors............................................................................................................. 16 10. Operating Modes of the Kit......................................................................................17 10.1. Application Flow......................................................................................................................... 17 10.2. Normal Mode..............................................................................................................................17 10.3. Mode Change.............................................................................................................................18 10.4. Settings Mode.............................................................................................................................18 10.4.1. Buzzer Volume Adjustment..........................................................................................18 11. Schematic................................................................................................................20 12. PCB Design............................................................................................................. 22 13. Bill of Materials........................................................................................................ 23 Atmel SAM C20 QTouch Robustness Demo USER GUIDE 2 Atmel-42525A-SAM-C20-QTouch-Robustness-Demo User Guide-09/2015