Capacitive Sensor Switch Control ICs - BU21072MUV
BU21072MUV/BU21078MUV is a capacitive sensorcontroller for switch operation.
In addition to a regular simple switch, support matrixswitches which are arranged in the matrix sensors. Ifexternal noise and temperature drift are detected, theautomatic self-calibration is operated.
Include LED controller with PWM function.
Sensor input channels
LED control channels
4 x 4
Operating Temperature (Min.)[°C]
Operating Temperature (Max.)[°C]
Features:・ 10 capacitive sensor ports. (BU21072MUV) 12 capacitive sensor ports. (BU21078MUV)
・ Supported Matrix switches. Maximum 16 switches. (BU21072MUV) Maximum 36 switches. (BU21078MUV)
・ Automatic self-calibration.
・ Held touch detection.
・ LED controller with PWM function.
・ Inform the detected result of switch operation by interrupt.
・ 2-wire serial bus interface.
・ 3.3V single power supply.
・ Built-in Power-On-Reset and Oscillator.