EM84513BFP Ver la hoja de datos (PDF) - ELAN Microelectronics

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EM84513BFP

Mouse Controller

ELAN Microelectronics 

EM84513

Mouse Controller

1 General Description

The EM84513 Scrolling Mouse Controller is specially designed to control 400cpi or

800cpi PS/2 mouse device. This single chip can interface four photo-couples plus

z-axis direct to 8042 controller. EM84513 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 entry and improve the accuracy. In the traditional mouse, a

great number of noises are generated when the grid is partially closed or opened.

These noises are usually mistaken for movement signals by traditional mouse

controller and the cursor of the display screen is thus moved frequently up and down or

back and forth. This will consume a great amount of energy. The EM84513 mouse

controller provides noise immunity circuits to eliminate these noises in order to reduce

energy consumption.

2 Features

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.

Two types Z direction input:

• Photo couples input. (Z/4)

• Mechanical input. (Z/2)

Two types resolution (Selected by package type):

• 400CPI.

• 800CPI.

Both key-press and key-release debounce interval 12 ms.

The sampilng rate of motion detector is about 65KHz.

Low power dissipation.

Package type:

• EM84513AEP : 16DIP(300mil), 400CPI, Photo couples input. (Z/4)

• EM84513AFP : 16DIP(300mil), 400CPI, Mechanical input. (Z/2)

• EM84513BEP : 16DIP(300mil), 800CPI, Photo couples input. (Z/4)

• EM84513BFP : 16DIP(300mil), 800CPI, Mechanical input. (Z/2)

Product Specification ((V0.9) 06.16.2006

•1

(This specification is subject to change without further notice)

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