BU9206 Datasheet, PDF (1/6 Pages) Rohm – PS / 2 Mouse Controller

Multimedia ICs
PS / 2 Mouse Controller
BU9206
The BU9206 is a PS / 2 mouse communication controller for PCs. This processor shapes waveforms and counts sig-
nals from the mouse rotary encoder as the mouse is moved, to provide two-way communication between mouse and
PC system.
•^Applications
PC mouse
•^Features
1) For PS / 2 mouse.
2) Compatible with a wide range of input signals, be-
cause it automatically sets the input threshold levels
for the X and Y direction, corresponding to the out-
put level of the rotary encoder inside the mouse.
3) CMOS process enables low current consumption.
•^{Absolute maximum ratings (Ta = 25°C)}
Parameter
Symbol
Limits
Unit
Power supply voltage
Power dissipation
VDD
– 0.3 ~ + 7.0
V
Pd
1000^∗
mW
Operating temperature
Topr
– 25 ~ + 75
°C
Storage temperature
Tstg
– 55 ~ + 125
°C
Input voltage
VIN
– 0.3 ~ VDD + 0.3
V
Output voltage
VOUT
– 0.3 ~ VDD + 0.3
V
∗ Reduced by 10 mW for each increase in Ta of 1°C over 25°C.
•^{Recommended operating conditions (Ta = 25°C)}
Parameter
Symbol
Min.
Power supply voltage
VDD
4.5
H input voltage 1
VIH1
0.8∗VDD
H input voltage 2
VIH2
0.4∗VDD
L input voltage 1
VIL1
0
L input voltage 2
XY input H voltage
XY input L voltage
VIL2
VAUP
VALP
0
0.3∗VDD
0
Typ.
5.0
—
—
—
—
—
—
Max.
Unit
5.5
V
VDD
V
VDD
V
0.2∗VDD
V
0.16∗VDD
V
0.8∗VDD
V
0.48∗VAUP
V
Application pin
VDD
SWR, SWL, TEST2B, TEST1B,
TEST0, RESETB
SCLK, SDATA
SWR, SWL, TEST2B, TEST1B,
TEST0, RESETB
SCLK, SDATA
XA, XB, YA, YB
XA, XB, YA, YB
1