Microchip AT42QT1481 Bedienungsanleitung

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9621EX–AT42–07/2014

Features

Number of keys:

Up to 48

Technology:

Patented charge-transfer (transverse mode), with frequency hopping

Key outline sizes:

6mm × 6mm or larger (panel thickness dependent); widely different sizes and

shapes possible

Key spacings:

8 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, 20mm plastic (key size dependent)

Key sensitivity:

Individually settable via simple commands over serial interface

Signal processing:

Self-calibration, auto drift compensation, noise filtering, Adjacent Key

Suppression

®

Interfaces:

UART

SPI slave (4MHz maximum clock rate)

STATUS indication pin

Debug output

FMEA compliant design features

IEC/EN/UL60730 compliant design features

UL approval

VDE compliance

For use in both class B and class C safety-critical products

Atmel AT42QT1481

48-Key QMatrix FMEA IEC/EN60730 Touch Sensor IC

DATASHEET

Produktspezifikationen