Datasheet Summary
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．
- patible with legacy PS/2 mouse．
- patible 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．
-...