EM84510 - ELAN Microelectronics Corp

EM84510 PS/2 SCROLLING MOUSE CONTROLLER

The EM84510 Scrolling Mouse Controller is specially designed to control PS/2 mouse device. This single chip can interface three key-switches four photo-couples plus z-axis direct to 8042 controller. EM84510 can receive command and echo status or data format which are compatible with IBM PS/2 mode mouse. Key debouncing circuit is provided to prevent false ent.

Features

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• Using 51k ±5% resistor for RC oscillation. Compatible with legacy PS/2 mouse. Compatible with Microsoft scrolling mouse. Built-in noise immunity circuit. Built-in current comparator for photo-couples input. Built-in three step dynamic input impedance. Three key-switches and four photo-couples inputs. Six types Z direction input: 1. Photo couples input. (Z/1) 4. Mechanical input. (Z/1) 2. Key-switches input. 5. Photo couples input. (Z/4) 3. Voltage-sensing input. 6. Mechanical input. (Z/2) Both key-press and key-release debounce interval 12 ms. The sampilng rate of motion detect.