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EM84520

ELAN Microelectronics Corp
Part Number EM84520
Manufacturer ELAN Microelectronics Corp
Description 2-IN-ONE SCROLLING MOUSE CONTROLLER
Published Apr 2, 2005
Detailed Description EM84520 2-IN-ONE SCROLLING MOUSE CONTROLLER ary n i m i l e Pr GENERAL DESCRIPTION The EM84520 Scrolling Mouse Controll...
Datasheet PDF File EM84520 PDF File

EM84520
EM84520

Overview
EM84520 2-IN-ONE SCROLLING MOUSE CONTROLLER ary n i m i l e Pr GENERAL DESCRIPTION The EM84520 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 50kΩ ±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.
Built-in three zener diodes : one in VDD to VSS, two in RTS to VDD.
CMOS push-pull RXD output.
Built-in current comparator for photo-couples input.
Built-in three step dynamic input impedance.
Three key-switches and four photo-couples inputs.
RTS debouncing circuit included.
Photo couple test mode included.
Low power dissipation.
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) • Package type: EM84520AP : 16DIP, Photo couples input.
(Z/1) EM84520DP: 16DIP, Mechanical input.
(Z/1) EM84520BP : 16DIP, Key-switches input.
EM84520EP : 16DIP, Photo couples input.
(Z/4) EM84520CP : 16DIP, Voltage-sensing input.
EM84520FP : 16DIP, Mechanical input.
(Z/2) • • • • • • • • • • • • • • • • • APPLICATION • Serial PnP scrolling mouse.
• PS/2 scrolling mouse.
• Combo PnP scrolling mouse.
PIN ASSIGNMENT EM84520A/B/C/D/E/F VDD OSC.
OUT Z1 Z2 CLK/RTS DATA/RXD OPT VSS 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 OSCR Y2 Y1 X2 X1 L M R * This specification are subject to be changed without notice.
6.
28.
1999 1 EM84520 2-IN-ONE SCROLLING MOUSE CONTROLLER FUNCTIONAL BLOCK DIAGRAM Z1 Z2 OPT X1 X2 Y1 Y2 ...


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