HT82M39A
3-Key 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
·
Supports rolling buttons in PS/2 mouse mode
·
X/Y axis photo input with built-in Holtek¢s special dy-
(optomechanical and mechanical)
·
2MHz RC oscillator for system frequency with an ex-
ternal pull-high resistor
·
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
Z 1
1
2
3
4
5
6
7
8
H T 8 2 M 3 9 A
1 6 D IP -A
Z 2
V D D
N C
V S S
O S C I
C L K
D A T A
1 6
1 5
1 4
1 3
1 2
1 1
1 0
9
Y 2
Y 1
X 2
X 1
T E S T
L B
R 0
R B
Pin Description
Pin No.
1, 2
3
4
5
6
7
8
Pin Name
Z1, Z2
VDD
NC
VSS
OSCI
CLK
DATA
I/O
I
Description
²Z²
axis input supports two kinds of scroller input; optomechanical and mechanical.
¾
Positive power supply
¾
No connection
¾
Negative power supply, ground
I
I/O
I/O
2MHz RC oscillator for system frequency with external pull-high resistor and
built-in C
²CLK
I/O²: PS/2 mouse CLK line. NMOS open drain output with 5kW pull-high resis-
tor.
²DATA
I/O²: PS/2 mouse DATA line. NMOS open drain output with 5kW pull-high
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.
For IC manufacture testing, user should leave it floating.
X/Y axis photo input with built-in Holtek¢s special dynamic photo input resistor
9~11
RB, RO, LB
I
12
13~16
TEST
X1, X2, Y1, Y2
I
I
Rev. 1.40
1
September 23, 2005
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
