HT82M39A_05 Datasheet, PDF (1/8 Pages) Holtek Semiconductor Inc – 3-Key 3D PS/2 Mouse Controller

HT82M39A
3-Key 3D PS/2 Mouse Controller
Feature
· Microsoft Intelli 3D PS/2 and IBM PS/2 mouse com-
patible
· Supports rolling buttons in PS/2 mouse mode
· X/Y axis photo input with built-in Holtek¢s special dy-
namic photo-input resistor
· Supports three buttons and three axis (X, Y, Z) in-
puts
· Z axis can support two kinds of scroller input
(optomechanical and mechanical)
· 2MHz RC oscillator for system frequency with an ex-
ternal pull-high resistor
· 16-pin DIP package
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
Z1 1
Z2 2
VDD 3
NC 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 TE S T
11 LB
10 R 0
9 RB
H T82M 39A
1 6 D IP -A
Pin Description
Pin No. Pin Name I/O
Description
1, 2
Z1, Z2
I ²Z² axis input supports two kinds of scroller input; optomechanical and mechanical.
3
VDD
¾ Positive power supply
4
NC
¾ No connection
5
VSS
¾ Negative power supply, ground
6
OSCI
I
2MHz RC oscillator for system frequency with external pull-high resistor and
built-in C
7
CLK
I/O ^{²CLK I/O²: PS/2 mouse CLK line. NMOS open drain output with 5kW pull-high resis-}
tor.
8
DATA
I/O ^{²DATA I/O²: PS/2 mouse DATA line. NMOS open drain output with 5kW pull-high}
resistor.
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
TEST
I For IC manufacture testing, user should leave it floating.
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
September 23, 2005