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AT42QT1085 Datasheet, PDF (1/30 Pages) ATMEL Corporation – QTouch 8-key Touch Sensor IC | |||
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Features
⢠QTouch® Sensor Channels
â Up to 8 keys
⢠Integrated Haptic Engine
â Haptic events may be triggered by touch detection or controlled by a host
microcontroller over SPI
⢠Data Acquisition
â QTouchADC key measurement/touch detection method
â Configurable measurement timing and averaging
â Spread spectrum charge transfer
â Raw data from channel measurement can be read over the SPI interface
⢠GPIO Pins
â 12 dedicated bi-directional GPIO pins, plus up to 4 additional pins (replacing keys)
â Configurable as software PWM Drive, digital inputs or outputs
⢠Device setup
â Device configuration may be stored in NVRAM
⢠Operation
â Power-On reset and brown-out detection
â Internal calibrated oscillator
⢠Key Outline Sizes
â 6 mm x 6 mm or larger (panel thickness dependent); widely different sizes and
shapes possible, including solid or ring shapes
⢠Key Spacing
â 7 mm centre to centre or more (panel thickness dependent)
⢠Layers required
â One
⢠Electrode Materials:
â Etched copper, silver, carbon, ITO
⢠Electrode Substrates:
â PCB materials; polyamide FPCB; PET films, glass
⢠Panel materials:
â Plastic, glass, composites, painted surfaces (low particle density metallic paints
possible)
⢠Panel Thickness:
â Up to 10 mm glass, 5 mm plastic (electrode size dependent)
⢠Key Sensitivity:
â Individually configured over SPI interface
⢠Signal Processing:
â Self-calibration, auto drift compensation, noise filtering
â Patented Adjacent Key Suppression® (AKS®) technology to ensure accurate key
detection
⢠Interface:
â Master/Slave SPI interface, up to 750 kHz
â Object-based communications protocol
⢠Power:
â 2.0V to 5.5V
⢠Packages:
â 32-pin 5 x 5 mm MLF RoHS compliant
â 32-pin 7 x 7mm TQFP RoHS compliant
QTouch 8-key
Touch Sensor IC
AT42QT1085
9625CâAT42â12/11
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