AT42QT2640_14 Datasheet, PDF (1/73 Pages) ATMEL Corporation – 64-key 8-slider/wheel QMatrix FMEA

Atmel AT42QT2640
64-key 8-slider/wheel QMatrix FMEA
IEC/EN/UL60730 Touch Sensor IC
PRELIMINARY DATASHEET
Features
 Number of channels:
 Up to 64 keys
 Up to eight sliders/wheels, each with 8-bit resolution
 Technology:
 Patented charge-transfer (transverse mode), with frequency hopping
 Key outline sizes:
 5 mm × 5 mm or larger (panel thickness dependent); widely different sizes and
shapes possible
 Key spacings:
 6 mm or wider, center to center (panel thickness dependent)
 Electrode design:
 Two-part electrode shapes (drive-receive); wide variety of possible layouts
 Layers required:
 One layer (with jumpers), two layers (no jumpers)
 Electrode materials:
 PCB, FPCB, silver or carbon on film, ITO on film
 Panel materials:
 Plastic, glass, composites, painted surfaces (low particle density metallic
paints possible)
 Adjacent Metal:
 Compatible with grounded metal immediately next to keys
 Panel thickness:
 Up to 50 mm glass, 20 mm plastic (key size dependent)
 Key sensitivity:
 Individually settable over serial interface
 Interfaces:
 SPI slave (4 MHz max. clock)
 CHANGE status indication pin
 Debug output
 Signal processing:
 Self-calibration, auto drift compensation, noise filtering, Adjacent Key
Suppression^® (AKS^®)
 FMEA compliant design features
9684DX–AT42–12/13