Click to expand full text
Capacitive Controller ICs
Capacitive Switch Controller ICs
BU21079F
General Description 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. Features ■ 8 capacitive sensor ports ■ Supports matrix switches. Maximum of 16 switches. ■ Automatic self-calibration ■ Continued touch detection ■ Sends an interrupt when there is a detected result of switch operation ■ 2-wire serial bus interface ■ 3.3V or 5.
BU21079F Datasheet
