DESCRIPTION

The SC84502 Mouse Controller is specially designed to control PS/2 mouse device. This single chip can interface three key switches and four photo-couples direct to 8042. SC84502 can receive command and echo status or data format which are compatible with IBM PS/2 mode mouse. Key debouncing circuit is provided to prevent false entry and improve the accuracy.

FEATURES

* Being compatible with PS/2 mouse mode

* Built-in noise immunity circuit

* Low power dissipation

* RC oscillation

* Three key-switches and four photo-couples inputs

* Both key-press and key-release debounce interval 12ms

* Through three key-switches input, SC84502 can exert seven different output

* The motion detector of the SC84502 could sense 8m/sec maximum with 200 DPI wheels

APPLICATIONS

* Optical mouse or pen-mouse

* Mechanical mouse or pen-mouse

* Optomechanical mouse or pen-mouse

* Mechanical track ball

* Optomechanical track ball