Peripherals ICs
Peripherals ICs
- 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:
- Comma 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:
- 5 mm x5 mm or larger (panel thickness dependent)
- Key Spacings:
- 6 mm 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 30 mm - 50 nrIrn diameter
- Wheei Electrode Design:
- Spatialty interpolated wheel up to 80 mm diameter
- Typical width of segments 12 mm
- Slider Electrode Design:
- Spatially interpolated, resistorless design
- Typical length 50 mm - 100 mm, typical width 12 mm
- 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 15 mm glass (key size dependent}
- Up to 10 mm plastic (key size dependent)
- Wheel/slider Panel Thickness:
- Up to 4 mm glass
- Up to 3 mm plastic
- Key Sensitivity:
- Comms Mode- individually settable via simple commands over 12C interface
- Standalone mode - settings are fixed
- Interface:
- I2C slave mode (400 kHz)
- CHANGE status indication pin
- Signal Processing:
- Self-calibration, Auto drift compensation, Noise filtering, Adjacent Key Suppression° (AKS).
Spezifikationen
| Brand | Microchip |
|---|---|
| Schedule B | 8542310000 |
| HTSN | 8542310001 |
| Interface Type | I2C |
| Type Prod | Capacitive |
| Operating | 1.8000, 5.5000 V |
| Number Of Keys | 12 |
| Country of origin | China |
| Operating temperature | -40 to 85 °C |
| Load Capa | 30 pF |
| Msl Level | 1 |
| Packaging | Tape and Reel |
| Family | AT42QT2120 |
SKU: AT42QT2120-XUR