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Overview
- Product Type:Proximity/Keys/Slider
- Input Channels:7
- Number of Keys Max:7
- Slider:No
- Proximity detection:No
- Output Channels:0
- Measurement Principle:E-Field
- Report Rate (pps):0
- Number of Touches:0
- Power Modes:0
- Interface:I2C and Discrete
- I/O, LED Drivers:0
- Other Features:Signal Guard/Driven Shield
- Temp Range:0°C to 70°C
- Voltage Min. (V):1.80
- Voltage Max. (V):5.50
- Comms mode
- Standalone mode
- Comms mode: 1 – 7 keys (or 1 – 6 keys plus a Guard Channel)
- Standalone mode: 1 – 4 keys plus a fixed Guard Channel on key 0
- Number of I/O Lines in Standalone mode: 5 outputs
- Technology: Patented spread-spectrum charge-transfer
- Key Outline Sizes: 6 mm x 6 mm or larger (panel thickness dependent); widely different sizes and shapes possible
- PCB Layers Required: One
- Electrode Materials: Etched copper; Silver; Carbon; Indium Tin Oxide (ITO)
- Panel Materials: Plastic; Glass; Composites; Painted surfaces (low particle density metallic paints possible
- Panel Thickness: Up to 10 mm glass; Up to 5 mm plastic (electrode size dependent)
- Comms mode: individually settable via simple commands over I2C-compatible interface
- Standalone mode: settings are fixed
- I2C -compatible slave mode (400 kHz)
- Discrete detection outputs
- Signal Processing:
- Self-calibration
- Auto drift compensation
- Noise filtering
- Adjacent Key Suppression® (AKS®) – up to three groups possible
- Power Supply: 1.8 V – 5.5 V
- 14-pin SOIC RoHS compliant IC
- 20-pin VQFN RoHS compliant IC
The AT42QT1070 (QT1070) is a digital burst mode charge-transfer capacitive sensor driver. The device can sense from one to seven keys, dependent on mode.
The QT1070 has the optimized architecture where no external components are required and only 1-pin per channel. It includes all signal processing functions necessary to provide stable sensing under a wide variety of changing conditions, and the outputs are fully debounced.
The QT1070 modulates its bursts in a spread-spectrum fashion in order to heavily suppress the effects of external noise, and to suppress RF emissions. The QT1070 use a dual-pulse method of acquisition. This provides greater noise immunity and eliminates the need for external sampling capacitors, allowing touch sensing using a single pin.
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Tools And Software
Demo & Evaluation Boards
| Tools |
|---|
 QT1 Xplained Pro kit is an extension board that enables evaluation of self- and mutual capacitance mode using the Peripheral Touch Controller(PTC).
|
| The QT6 Xplained Pro is a QTouch Surface extension board for Xplained Pro boards that demonstrates the Peripheral Touch Controller (PTC) as a high performance touch-surface controller.
|
| QT2 Xplained Pro is a QTouch Surface extension board for Xplained Pro evaluation kits that demonstrates the Peripheral Touch Controller (PTC) as a high performance touch-surface controller. |
| QT3 Xplained Pro is a QTouch keypad extension board demonstrating an ultra-low power keypad design using the Peripheral Touch Controller (PTC). |
| SLCD1 Xplained Pro is an extension kit with a 96-segment LCD display compatible with Xplained Pro evaluation kits with the segment LCD extension header. |
["developmentenvironment","Development Environment"] ,
["emulators","Emulator and Debuggers"] ,
["demoevaluationboards","Demo & Evaluation Boards"] ,
["programmerrelations","Programmers"] ,
["thirdpartytools","3rd Party Tools"] ,
["legacy","Legacy"] ,
["softwarelibraries","Library and Firmware"]
referencedesigns,Reference Designs:
codeexamples,Code Examples:
ibisboarddesignfiles,Board Design Files: