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AT42QT1085

ATMEL Corporation
Part Number AT42QT1085
Manufacturer ATMEL Corporation
Description QTouch 8-key Touch Sensor
Published Jul 3, 2014
Detailed Description Features • QTouch® Sensor Channels – Up to 8 keys • Integrated Haptic Engine – Haptic events may be triggered by touch ...
Datasheet PDF File AT42QT1085 PDF File

AT42QT1085
AT42QT1085

Overview
Features • QTouch® Sensor Channels – Up to 8 keys • Integrated Haptic Engine – Haptic events may be triggered by touch detection or controlled by a host microcontroller over SPI Data Acquisition – QTouchADC key measurement/touch detection method – Configurable measurement timing and averaging – Spread spectrum charge transfer – Raw data from channel measurement can be read over the SPI interface GPIO Pins – 12 dedicated bi-directional GPIO pins, plus up to 4 additional pins (replacing keys) – Configurable as software PWM Drive, digital inputs or outputs Device setup – Device configuration may be stored in NVRAM Operation – Power-On reset and brown-out detection – Internal calibrated oscillator Key Outline Sizes – 6 mm x 6 mm or larger (panel thickness dependent); widely different sizes and shapes possible, including solid or ring shapes Key Spacing – 7 mm centre to centre or more (panel thickness dependent) Layers required – One Electrode Materials: – Etched copper, silver, carbon, ITO Electrode Substrates: – PCB materials; polyamide FPCB; PET films, glass Panel materials: – Plastic, glass, composites, painted surfaces (low particle density metallic paints possible) Panel Thickness: – Up to 10 mm glass, 5 mm plastic (electrode size dependent) Key Sensitivity: – Individually configured over SPI interface Signal Processing: – Self-calibration, auto drift compensation, noise filtering – Patented Adjacent Key Suppression® (AKS®) technology to ensure accurate key detection Interface: – Master/Slave SPI interface, up to 750 kHz – Object-based communications protocol Power: – 2.
0V to 5.
5V Packages: – 32-pin 5 x 5 mm MLF RoHS compliant – 32-pin 7 x 7mm TQFP RoHS compliant • • QTouch 8-key Touch Sensor IC AT42QT1085 • • • • • • • • • • • • • • 9625C–AT42–12/11 1.
Pinout and Schematic 1.
1 Pinout Configuration KEY5/GPIO14 RESET KEY4/GPIO15 CHANGE GPIO10 GPIO11 GPIO0 GPIO1 GPIO2 VDD VSS GPIO3 GPIO4 GPIO5 1 2 3 4 5 6 7 8 32 31 30 29 28 27 26 25 24 23 22 21 AT42QT...


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