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BU21181FS - Capacitive Switch Controller

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.

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 Key Specifications.
  • Power Supply Voltage Range:.
  • Operating Temperature Range:.
  • Operating Current: 3.0 V to 5.5 V -25 °C to +85 °C 2.5 mA (Typ) Package.

📥 Download Datasheet

Datasheet Details

Part number BU21181FS
Manufacturer ROHM
File Size 2.09 MB
Description Capacitive Switch Controller
Datasheet download datasheet BU21181FS Datasheet

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Full PDF Text Transcription

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Datasheet Capacitive Switch Controller ICs Capacitive Switch Controller IC BU21181FS General 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. 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 Key Specifications  Power Supply Voltage Range:  Operating Temperature Range:  Operating Current: 3.0 V to 5.5 V -25 °C to +85 °C 2.
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