Microchip AT42QT2120 Bedienungsanleitung
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Features
•Number of Keys:
–Comms Mode: 1 to 12 keys (1 to 9 if wheel or slider option enabled)
–Standalone Mode: 1 to 5 keys
•Technology:
–Patented spread-spectrum QTouchADC charge-transfer
•Number of Output Lines:
–Comms Mode: Up to 10 channels can be configured as outputs (but they will
replace the keys)
–Standalone Mode: 1 to 5 channels can be configured as outputs
•Key Outline Sizes:
–5mmx 5mm or larger (panel thickness dependent)
•Key Spacings:
–6mm or wider, center to center (panel thickness, human factors dependent)
•Key Design:
–Single solid or ring shaped electrodes; widely different sizes and shapes possible
•Proximity Electrode Design:
–Single solid electrodes; Key Design, Loop, PCB Trace - different sizes and shapes
possible
•Wheel Size:
–Typically 30mm–50mm diameter
•Wheel Electrode Design:
–Spatially interpolated wheel up to 80mm diameter
–Typical width of segments 12mm
•Slider Electrode Design:
–Spatially interpolated, resistorless design
–Typical length 50mm–100mm, typical width 12mm
–Can be an arc or other irregular shape
•Substrates:
–FR-4, low cost CEM-1 or FR-2 PCB materials; polyamide FPCB; PET films, glass
•Adjacent Metal:
–Compatible with grounded metal immediately next to keys
•Layers Required:
–One; electrodes and components can be on same side
•Electrode Materials:
–Etched copper, silver, carbon, indium tin oxide (ITO), PEDOT
•Panel Materials:
–Plastic, glass, composites, painted surfaces (nonconductive paints)
•Key Panel Thickness:
–Up to 15mm glass (key size dependent)
–Up to 10mm plastic (key size dependent)
•Wheel/slider Panel Thickness:
–Up to 4mm glass
–Up to 3mm plastic
•Key Sensitivity:
–Comms Mode – individually settable via simple commands over I
2
C interface
–Standalone mode – settings are fixed
•Interface:
–
I
2
C slave mode (400kHz)
–CHANGE status indication pin
•Signal Processing:
–Self-calibration, Auto drift compensation, Noise filtering, Adjacent Key
Suppression
®
(AKS
®
)
•Power:
–1.8V to 5.5V
•Packages:
–20-pin SOIC/TSSOP RoHS compliant IC
–20-pad VQFN RoHS compliant IC
QTouch
12-channel
Touch Sensor
IC
AT42QT2120
9634E–AT42–06/12
Produktspezifikationen
| Marke: | Microchip |
| Kategorie: | Nicht kategorisiert |
| Modell: | AT42QT2120 |
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