DESCRIPTION
The SC83702 Mouse Controller is specially designed to control mouse device. This single chip can interface three key-switches and four photo-couple direct to RS-232C. The SC83702 does not need any external power supply, so the mouse can go without a power line. It is versatile with both microsoft and mouse system. Debouncing circuit were provided to prevent false entry and to improve the accuracy. In 1200 baud rate non-auto speed with 200 DPI wheels and photo-couples, the scanning is 650mm/sec without missing a dot in microsoft mode, and the scanning speed can up to 770mm/sec in mouse system mode.

FEATURES
* Built-in two zener diode between VDD and VSS, RTS and VDD
* Built-in noise immunity circuit
* CMOS DIP 16 pins package&SOP 16 pins package
* Low power dissipation
* Use 32.768KHz crystal or 3.58MHz resonator
* Oscillator circuits on-chip
* Serial output in 1200 baud rate
* Can be powered directly from RS-232C
* Can drive directly to RS-232C
* Three key-switches and four photo-couples inputs
* Both key-in and key-release debounce interval 13ms
* Through three key-switches input, SC83702 can exert seven different output
* The sampling rate of motion detector is 65KHz

APPLICATIONS
* Optical mouse or pen-mouse
* Mechanical mouse or pen-mouse
* Optomechanical mouse or pen-mouse
* Mechanical track ball
* Optomechanical track ball