UT84520 Overview
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.
UT84520 Key Features
- Using 50KΩ+5% resistor for RC oscillation． -patible with legacy PS/2 mouse． -patible with Microsoft PS/2 scrolling mouse
- Three key-switches and four photo-couples inputs． -Photo couple test mode included﹒ -Low power dissipation． -Two types Z