EM84520
2-IN-ONE SCROLLING MOUSE CONTROLLER
PS/2 mouse mode : (TA=25°C to 70°C)
Parameters
Sym.
Min.
Typ.
Max.
Unit
Operating voltage
Operating current
VDD
IOp
4.5
-
5
-
5.5
1
V
(no load)
mA
V
CLK, DATA
Vt+
3.2
-
3.8
postive-going threshold voltage
CLK, DATA
negative-going threshold voltage
DATA, CLK
input current
DATA,CLK
Vt -
Idc
1.2
0.56
-
-
-
-
1.9
1.86
0.4
V
mA
V
(Vin=0V )
(Iprl=-2mA)
Vprl
low output voltage
Serial mouse mode : (TA=25°C to 70°C)
Parameters
Sym.
Min.
Typ.
Max.
Unit
Operating voltage
VDD
VRTS
Iop1
Iop2
Irts1
Irts2
Irh
Irl
Vrts+
Vrts-
4
-
-
3
-
4
2
-
5.6
12.2
6.2
13
1
-
1.8
-
-
-2
-
V
V
Operating current
Operating current
(VDD=5.4, RTS=VDD)
-
-
-
-
-
-
-
-
mA
mA
mA
mA
mA
mA
V
(VDD=6.2, RTS=VDD)
(VDD=5.6, RTS=11V)
(VDD=5.4, RTS=12.5V)
(Vrh=Vrts-2.6V)
RTS operating current
RTS operating current
RXD high output voltage
RXD low output voltage
RTS high input voltage
RTS low input voltage
(Vrl=Vss+2.6V)
9.6
-
6.8
V
* All parameters in above table are compared with VSS.
AC ELECTRICAL CHARACTERISTICS (TA=25°C to 70°C)
PS/2 mouse mode :
Parameters
Sym.
Min.
Typ.
Max.
Unit
Oscillating Frequency
Key Debounce
Fosc
37.0-3%
37.0
37.0+3%
KHz
Tkd
Tr
-
12
-
-
-
-
-
-
-
ms
us
us
us
us
us
Rising Edge Crossed Width
Falling Edge Crossed Width
Mouse CLK Active Time
13.5
Tf
13.5
-
Tmca
Tmci
Tmdc
-
-
-
40.5
40.5
13.5
Mouse CLK Inactive Time
Time that Mouse Sample DATA from
CLK rising Edge
System CLK Active Time
Tsca
Tsci
Tsdc
Tscd
Tpi
-
-
40.5
40.5
13.5
27.0
-
-
-
us
us
us
us
us
System CLK Inactive Time
Time from DATA Transition to Falling Edge of CLK
-
-
Time from rising Edge of CLK to DATA Transition
Time to mouse Inhibit after the 11th CLK to
ensure mouse does not start another Transmission
-
0
-
50
6.28.1999
* This specification are subject to be changed without notice.
12
ELAN [ ELAN MICROELECTRONICS CORP ]
