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.

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)

APPLICATION
    PS/2 Ball Mouse or Optical Mouse.