Features
 Configurations:
● Can be configured as a combination of keys and input/output lines
 Number of QTouch® Keys:
● Two to six
 Number of I/O Lines:
● Seven, configurable for input or output, with PWM control for LED driving
 Technology:
● Patented spread-spectrum charge-transfer (direct mode)
 Key Outline Sizes:
● 6 mm x 6 mm or larger (panel thickness dependent); widely different sizes and
shapes possible
 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 (electrode size dependent)
● Up to 5 mm plastic (electrode size dependent)
 Key Sensitivity:
● Individually settable via simple commands over serial interface
 Interface:
● I2C-compatible slave mode (100 kHz). Discrete detection outputs
 Moisture Tolerance:
● Increased moisture tolerance based on hardware design and firmware tuning
 Signal Processing:
● Self-calibration
● auto drift compensation
● noise filtering
● Adjacent Key Suppression® (AKS®)
 Applications:
● Mobile appliances
 Power:
● 1.8 V to 5.5 V
 Package:
● 28-pin 4 x 4 mm QFN RoHS compliant IC