Capacitive Switch Controller IC - BU21079F
BU21079F is a capacitive switch controller used for operating switches. Low power consumption is achieved using the intermittent operation mode. In addition to a regular simple switch, it supports matrix switches which are arranged in the matrix sensors. If external noise and temperature drift are detected, the automatic self-calibration is activated.
Sensor input channels
4 x 4
Operating Temperature (Min.)[°C]
Operating Temperature (Max.)[°C]
Features:·8 capacitive sensor ports
·Supports matrix switches. Maximum of 16 switches.
·Continued touch detection
·Sends an interrupt when there is a detected result of switch operation
·2-wire serial bus interface
·3.3V or 5.0V single power supply
·Built-in Power-On-Reset and Oscillator