PDF EM84520BP Download

Description

The EM84520, EM84520BP Scrolling Mouse Controller is specially designed to control serial mouse or PS/2 mouse device.

This single chip can interface three key-switches and 4 X-Y photo-couples 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 50kW ±1% resistor for RC oscillation.

• Compatible with legacy PS/2 mouse.

• Compatible with Microsoft serial scrolling mouse.

• Compatible with Microsoft PS/2 scrolling mouse.

• Serial or PS/2 port auto-detect.

• 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