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EM83807 ALL-IN-ONE PLUG & PLAY 3-BUTTON SERIAL MOUSE CONTROLLER
ary n i m i l e Pr
GENERAL DESCRIPTION
The EM83807 Mouse Controller is specially designed to control serial mouse device. This single chip can interface three key-switches and 4 X-Y photo-couples directly to RS-232C.
FEATURES
• • • • • • • • • • • • • • Include PnP software scrolling function Using 50kΩ ±1% resistor for RC oscillation. Compatible with Microsoft serial mouse. 100 bytes PnP ID code could be filled by code layer. Built-in noise immunity circuit. The sampiling rate of motion detector is up to 65KHz. Built-in three zener diodes : one in VDD to VSS, two in RTS to VDD. CMOS push-pull RXD output. Built-in current comparator for photo-couples input. Built-in three step dynamic input impedance.