DESCRIPTION

· BU21079F is a capacitive switch controller designed for operating switches with low power consumption through intermittent operation mode.
· It supports both regular simple switches and matrix switches arranged in matrix sensors.
· The IC features automatic self-calibration in response to external noise and temperature drift.

FEATURES

· 8 capacitive sensor ports for versatile switch configurations.
· Supports matrix switches with a maximum of 16 switches.
· Automatic self-calibration for enhanced reliability.
· Continued touch detection for uninterrupted operation.
· Interrupt signal upon detecting switch operation results.
· 2-wire serial bus interface for simplified connectivity.
· Single power supply compatible with 3.3V or 5.0V.
· Built-in Power-On-Reset and Oscillator for streamlined design.

APPLICATIONS

· Electronic devices equipped with multiple switches.
· Information appliances including printers.
· AV appliances such as digital TVs and HDD recorders.
· Notebook PCs.
· Home appliances like air-conditioners, refrigerators, and electrical rice cookers.