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AT42QT1111-MU Datasheet, PDF (1/50 Pages) ATMEL Corporation – QTouch 11-key Sensor IC | |||
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Features
⢠Sensor Keys:
â Up to 11 QTouch⢠channels
⢠Data Acquistion:
â Measurement of keys triggered either by a signal applied to the SYNC pin or at
regular intervals timed by the AT42QT1110's internal clock
â Keys measured sequentially for better performance, or in parallel groups for faster
operation
â Raw data for key touches can be read as a report over the SPI interface
⢠Discrete Outputs:
â Configurable âDetectâ outputs indicating individual key touch (7-key mode)
⢠Device Setup:
â Device configuration can be stored in EEPROM
⢠Technology:
â Patented spread-spectrum charge-transfer (direct mode)
⢠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 Spacings:
â 7 mm center to center or more (panel thickness dependent)
⢠Layers Required:
â One
⢠Electrode Materials:
â Etched copper, silver, carbon, Indium Tin Oxide (ITO)
⢠Electrode Substrates:
â PCB, FPCB, plastic 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 settable via simple commands over serial interface
⢠Adjacent Key Suppression® (AKSâ¢)
â Patented AKS technology to enable accurate key detection
⢠Interface:
â Full-duplex SPI slave mode (750 KHz), âchangeâ pin, discrete detection outputs
⢠Moisture Tolerance Good
⢠Power:
â 1.8V ~ 5.5V
⢠Package:
â 32-pin 5 x 5 mm MLF RoHS compliant
â 32-pin 7 x 7 mm TQFP RoHS compliant
⢠Signal Processing:
â Self-calibration, auto drift compensation, noise filtering, AKS technology
⢠Applications:
â Consumer and industrial applications, such as TV, media player, etc
QTouch⢠11-key
Sensor IC
AT42QT1111-MU
AT42QT1111-AU
9571AâAT42â02/10
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