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.
EM
2355
DIP16
SIGMADES
2685
QFP
EM
3000
BGA
SIGMADESIGNS
40
BGA
EMC
20000
DIP16
SIGMAD
80000
SIGMADES
10000
QFP
NS
17500
DIP
SIGMADE
8560
QFP
SIGMADE
8560
QFP
SIGMA
2317
BGA
SIGMADESIGNS
100500
BGA328
SIGMADESIGNS
40
BGA
SIGMADES
17489
14+
SIGMADES
5000
QFP208