HT82M39A
3D PS/2 Mouse Controller
Feature
·
·
Microsoft Intelli 3D PS/2 and IBM PS/2 mouse com-
Z axis can support two kinds of scroller input
patible
(optomechanical and mechanical)
·
·
·
Supports rolling buttons in PS/2 mouse mode
2MHz RC oscillator for system frequency with an ex-
ternal pull-high resistor
X/Y axis photo input with built-in Holtek¢s special dy-
·
16-pin DIP package
namic photo-input resistor
·
Supports three buttons and three axis (X, Y, Z) in-
puts
General Description
The HT82M39A is a Plug and Play PS/2 3D mouse con-
troller. It is compatible with Microsoft Intelli 3D PS/2
mouse. The Z axis can support two kinds of scroller input,
namely; optomechanical and mechanical.
Pin Assignment
Y
2
1
2
1
Z
Z
1
2
1
2
3
4
5
6
7
8
1
1
1
1
1
1
1
6
5
4
3
2
1
0
9
Y
X
V
D
D
C
X
N
T
E
S
T
V
S
S
L
R
R
B
O
S
C
I
0
B
C
A
L
K
A
D
T
H
T
8
2
M
3
9
A
1
6
D
I
P
-
A
Pin Description
Pin No.
Pin Name
I/O
I
Description
1, 2
3
Z1, Z2
VDD
NC
²Z² axis input supports two kinds of scroller input; optomechanical and mechanical.
Positive power supply
No connection
¾
¾
¾
4
5
VSS
Negative power supply, ground
2MHz RC oscillator for system frequency with external pull-high resistor and
built-in C
6
7
8
OSCI
CLK
I
²CLK I/O²: PS/2 mouse CLK line. NMOS open drain output with 5kW pull-high resis-
I/O
I/O
tor.
²DATA I/O²: PS/2 mouse DATA line. NMOS open drain output with 5kW pull-high
DATA
resistor.
Right Button: Normal pull-low (50kW),
Pressing the button connects to high.
Rolling Button: Normal pull-low (50kW),
Pressing the button connects to high.
Left Button: Normal pull-low (50kW),
Pressing the button connects to high.
9~11
RB, RO, LB
I
12
TEST
I
I
For IC manufacture testing, user should leave it floating.
13~16
X1, X2, Y1, Y2
X/Y axis photo input with built-in Holtek¢s special dynamic photo input resistor
Rev. 1.20
1
August 20, 2002