SC84520 Datasheet | Silan Microelectronics

Silan Semiconductors TWO IN ONE SCROLLING MOUSE CONTROLLER DESCRIPTION The SC84520 Scrolling Mouse Controller id specially designed to control serial mouse or PS/2 mouse device. This single chip can interface three key-switched and 4 X-Y photo-couples plus Z-axis directly plus Z-axis directly to RS-232C or 8042 controller. There are four types Z-axis inputs used to implement scrolling mouse functionality. Features - Using 50kΩ ± 1% resistor for RC oscillation - patible with legacy PS/2 mouse - patible with Microsoft serial scrolling mouse - patible with Microsoft PS/2 scrolling mouse - Serial or PS/2 port auto-detect - 100 bytes Pn P ID code could be filled by code layer - Built-in noise immunity circuit - The sampling rate of motion detector is up to 65 k Hz - Built-in three zener diodes : one in VDD to VSS, two in RTS to VDD - CMOS push-pull RXD output - Built-in current parator for photo-couples input - Built-in three step dynamic input impedance - Three key-switches...