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UT84520 - PS/2 SCROLLING MOUSE CONTROLLER

General Description

The UT84520 Scrolling Mouse Controller is specially designed to control PS/2 mouse device.This single chip can interface with three key-switches and 4X-Y photo-couples plus Z-axis directly to 8042 controller.

There are four types of Z-axis inputs used to implement scrolling mouse functionality.

Key Features

  • Using 50KΩ+5% resistor for RC oscillation．.
  • Compatible with legacy PS/2 mouse．.
  • Compatible with Microsoft PS/2 scrolling mouse．.
  • Built-in noise immunity circuit．.
  • The sampling rate of motion detector is up to 65KHz．.
  • Built-in three step dynamic input impedance． DIP-16.
  • Three key-switches and four photo-couples inputs．.
  • Photo couple test mode included﹒.
  • Low power dissipation．.
  • Two types Z direction input: 1.Photo couples input 2.Mechanical input UTC UN.

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UTC UT84520 PS/2 SCROLLING MOUSE CONTROLLER DESCRIPTION The UT84520 Scrolling Mouse Controller is specially designed to control PS/2 mouse device．This single chip can interface with three key-switches and 4X-Y photo-couples plus Z-axis directly to 8042 controller． There are four types of Z-axis inputs used to implement scrolling mouse functionality． CMOS IC FEATURES *Using 50KΩ+5% resistor for RC oscillation． *Compatible with legacy PS/2 mouse． *Compatible with Microsoft PS/2 scrolling mouse． *Built-in noise immunity circuit． *The sampling rate of motion detector is up to 65KHz． *Built-in three step dynamic input impedance． DIP-16 *Three key-switches and four photo-couples inputs． *Photo couple test mode included﹒ *Low power dissipation． *Two types Z direction input: 1.