ATAVRQTOUCHX Atmel, ATAVRQTOUCHX Datasheet - Page 14

• Manufacturer Part Number: ATAVRQTOUCHX
• Description: BOARD EVAL CAPACITIVE TOUCH
• Manufacturer: Atmel
• Series: QTouch™r

Specifications of ATAVRQTOUCHX

• Sensor Type: Touch, Capacitive
• Sensing Range: 1 Slider, 1 Wheel, 2 Buttons
• Interface: USB
• Voltage - Supply: 5V, USB
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: AT90USB1287, ATxmega128A1
• Silicon Manufacturer: Atmel
• Silicon Family Name: ATxmega
• Kit Contents: Board
• Svhc: No SVHC (15-Dec-2010)
• Core Architecture: AVR
• Core Sub-architecture: AVR19
• Kit Features: One Slider, One Wheel And 2
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Sensitivity: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

5.2.1.1
Sensor schematics for a QTouch acquisition method design
Figure 5-3 : Schematics for a QTouch acquisition method design
5.2.2
QMatrix acquisition method
QMatrix devices detect touch using a scanned passive matrix of electrode sets. A single QMatrix
device can drive a large number of keys, enabling a very low cost-per-key to be achieved.
Figure 5-4 : QMatrix Acquisition method
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