HT82M398A_06 Datasheet, PDF (1/7 Pages) Holtek Semiconductor Inc – 5-Key 3D WIN2000 PS/2 Mouse Controller

HT82M398A
5-Key 3D WIN2000 PS/2 Mouse Controller
Features
· Operating Voltage: 4.75V~5.25V
· Compatible with Microsoft Windows 2000 and
5-button Wheel Mouse
· Compatible with Microsoft Intelli 3D PS/2 and IBM
PS/2 mouse
· Supports rolling buttons in PS/2 mouse mode
· X/Y axis photo input with built-in Holtek¢s special
dynamic photo-input resistor
· Supports three buttons and three axes (X, Y, Z)
inputs
· Z axis can support two kinds of scroller input
(optomechanical and mechanical)
· 2MHz RC oscillator for system frequency with
external pull-high resistor
· 16-pin DIP package
General Description
The HT82M398A is a Plug and Play WIN2000 and
5-button 3D PS/2 mouse controller. It is also compatible
with Microsoft Intelli 3D PS/2 and IBM PS/2 mouse. The
Pin Assignment
Z1 1
Z2 2
VDD 3
B5 4
VSS 5
O SCI 6
C LK 7
D ATA 8
16 Y 2
15 Y 1
14 X 2
13 X 1
12 B 4
11 LB
10 R 0
9 RB
H T82M 398A
1 6 D IP -A
Z axis can support two kinds of scroller input, namely;
mechanical and optomechanical.
Pin Description
Pin No. Pin Name I/O
Description
1, 2 Z1, Z2
I
Z, axis input supports two kinds of scroller input, namely; optomechanical and me-
chanical.
3
VDD
¾ Positive power supply
4
B5
I Button 5, normal pull-low (50kW), Press connect to high.
5
VSS
6
OSCI
¾ Negative power supply
I
2MHz RC oscillator for system frequency with external pull-high resistor and built-in
Capacitor.
7
CLK
I/O CLK I/O, PS/2 mouse CLK line. NMOS open drain output with 5kW pull-high resistor.
8
DATA
I/O
DATA I/O, PS/2 mouse DATA line. NMOS open drain output with 5kW pull-high re-
sistor.
9~11 RB, RO, LB
Right Button: Normal pull-low (50kW),
Pressing the button connects to high.
I ^{Rolling Button: Normal pull-low (50kW),}
Pressing the button connects to high.
Left Button: Normal pull-low (50kW),
Pressing the button connects to high.
12
B4
I Button 4, normal pull-low (50kW), Press connect to high.
13~16 X1, X2, Y1, Y2 I X/Y axis photo input with built-in Holtek¢s special dynamic photo input resistor
Rev. 1.40
1
October 12, 2006