Features
- Low-Power, High-Sensitivity,
Environmentally Robust Capacitive Touch Buttons, Sliders, Wheels and 2D Surface
- Supports Wake-up on Touch from Standby Sleep Mode
- Supports
Mix-and-Match Mutual and Self-Capacitance Sensing
- 18/22/32 buttons in Self-Capacitance
mode, for 28-/32-/48-pins, respectively
- 81/121/256
buttons in Mutual Capacitance mode, for 28-/32-/48-pins, respectively
- One Pin per Electrode – No External
Components
- Load Compensating Charge Sensing:
- Parasitic capacitance
compensation
- Adjustable gain for superior sensitivity
- Zero Drift Over the Temperature and
VDD Range:
- Auto-calibration and
recalibration of sensors
- Single-Shot and Free-Running Charge
Measurement
- Hardware Noise Filtering and Noise
Signal Desynchronization for High Conducted Immunity
- Supports Analog Accumulation and
Digital Accumulation
- Driven Shield+ for Superior Noise
Immunity and Moisture Tolerance
- Any PTC X/Y line can be used
for the driven shield
- All enabled sensors will be
driven at the same potential as the sensor scanned
- Boost Mode for Doubled
Signal-to-Noise Ratio or 4x Faster Response Time in Mutual Capacitance Systems
- Selectable Channel Change Delay
Allows Choosing the Settling Time on a New Channel, as Required
- Acquisition-Start Triggered by
Command or through Auto-Triggering Feature
- Low CPU Utilization through
Interrupt on Acquisition-Complete
- Supported by the START QTouch® Configurator
Development Tools
- Window Monitor to Compare Value to Predefined Threshold Values