Microchip AT42QT1481 Bruksanvisning


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Sida 1/73
9621EX–AT42–07/2014
Features
Number of keys:
Up to 48
Technology:
Patented charge-transfer (transverse mode), with frequency hopping
Key outline sizes:
6 mm × 6 mm 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, 20 mm 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 (4 MHz 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
2AT42QT1481 [DATASHEET]
9621EX–AT42–07/2014
Detects and Reports Key Failure
Power:
+4.75 to 5.25 V
Package:
44-pin 10 × 10 mm TQFP RoHS compliant
3
AT42QT1481 [DATASHEET]
9621EX–AT42–07/2014
1. Pinout and Schematic
1.1 Pinout Conguration


Produktspecifikationer

Varumärke: Microchip
Kategori: Inte kategoriserad
Modell: AT42QT1481

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