ALL IN ONE MOUSE CONTROLLER
Patent Number : 38715, 95661 (R.O.C)
Patent Pending : 84200836 (R.O.C)
ALL IN ONE MOUSE CONTROLLER
EM83702
EM83702
GENERAL DESCRIPTION
The EM83702 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 EM83702 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 650 mm/sec without missing a dot in microsoft
mode,and the scanning speed can up to 770 mm/sec in mouse system mode.
FEATURES
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Built-in two zener diode between V
DD
and V
SS
, RTS and V
DD
.
Buit-in noise immunity circuit.
CMOS DIP 16 pins package & SOP 16 pins package.
Low power dissipation.
Use 32.768 kHz 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 13 ms.
Through three key-switches input, EM83702 can exert seven different output.
The sampling rate of motion detector is 65 KHz.
APPLICATIONS
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Optical mouse or pen-mouse
Mechanical mouse or pen-mouse
Optomechanical mouse or pen-mouse
Mechanical track ball
Optomechanical track ball
* This specification are subject to be changed without notice.
4.15.1996
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EMC [ ELAN MICROELECTRONICS CORP ]
