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9543E–AT42–05/2013
Features
Number of Keys:
One, toggle mode (touch-on / touch-off), plus programmable auto-off delay
and external cancel
Configurable as either a single key or a proximity sensor
Technology:
Patented spread-s
6 mm x 6 mm or larger (panel thickness dependent); widely different sizes and
shapes possible
Electrode design:
Solid or ring electrode shapes
PCB Layers required:
One
Electrode materials:
Etched copper, silver, carbon, Indium Tin Oxide (ITO)
Electrode substrates:
PCB, FPCB, plastic films, glass
Panel materials:
Plastic, glass, composites, painted surfaces (low particle density metallic
paints possible)
Panel thickness:
Up to 12 mm glass, 6 mm plastic (electrode size and Cs dependent)
Key sensitivity:
Settable via external capacitor (Cs)
Interface:
Digital output, active high or active low (hardware configurable)
Moisture tolerance:
Increased moisture tolerance based on hardware design and firmware tuning
Power:
1.8 V – 5.5 V; 32 µA at 1.8 V
Package:
6-pin SOT23-6 (3 x 3 mm) RoHS compliant
8-pin UDFN/USON (2 x 2 mm) RoHS compliant
Signal processing:
Self-calibration, auto drift compensation, noise filtering
Atmel AT42QT1012
One-channel Toggle-mode QTouch
®
Touch Sensor IC
with Power Management Functions
DATASHEET
页面指南
