BU21181FS Description
BU21181FS is a capacitive switch controller that detects capacitance change and judges the operation of Switch ON / OFF or Long Press. The function to prevent false detection of water enables it to be used at places using water.
BU21181FS Key Features
- 18 Capacitive Sensor Pins
- Switch ON / OFF / Long Press Detection
- Inform Detection Results by Interrupt Pin
- Prevention False Detection by Water
- Noise Calibration Function
- Drift Calibration Function
- Adjust Sampling Period Function
- 2-wire Serial Bus Interface
- Single Power Supply
- Power Supply Voltage Range