HT82M938T Datasheet, PDF (1/12 Pages) Holtek Semiconductor Inc – 27MHz 3D PS2 Mouse Controller

HT82M938T/HT82M938R
27MHz 3D PS2 Mouse Controller
Features
· Compatible with Microsoft Windows 2000 and
5-Button Wheel Mouse
· Compatible with Microsoft Intelli 3D PS/2 and IBM
PS/2 mouse compatible
· Supports rolling buttons in 3D PS/2 mouse mode
· Supports five buttons (R,M,L,B4,B5) and three axes
( X,Y,Z)input
· Z axis can support optomechanical and mechanical
scroller input
· Crystal oscillator system frequency 6MHz for trans-
mitter and 6MHz for receiver
· 27MHz Single Channel with 8 ID Code
· Transmitter 20-pin SOP and receiver 16-pin SOP
package
General Description
The HT82M938T/HT82M938R is a Plug & Play 27MHz
RF 5 Buttons 3D PS/2 mouse controller transmitter and
receiver. It is compatible with Microsoft Intelli 3D PS/2
Pin Assignment
T r a n s m itte r
Z1 1
20
R2
19
M3
18
L4
17
B4 5
16
B5 6
15
VSS 7
14
NC 8
13
X1 9
12
X 2 10
11
H T82M 938T
2 0 S O P -A
Z2
IR _ O N
R ._O U T
R ._E N
O SC2
O SC1
VDD
RESET
Y2
Y1
Wheel Mouse. The operation of the Z axis can support
optomechanical and mechanical scroller input.
R e c e iv e r
NC 1
16
D ATA 2
15
NC 3
14
NC 4
13
NC 5
12
VSS 6
11
NC 7
10
C LK 8
9
H T82M 938R
1 6 S O P -A
NC
LE D
R E S _C H
O SC2
O SC1
VDD
RESET
R . _ IN
Pin Description
Transmitter
Pin No. Pin Name I/O
Description
1, 20
Z1, Z2
I
Z-axis input supports two kinds of scroller input; optomechanical and mechani-
cal.
2, 3, 4, 5, 6 R, M, L, B4, B5 I ^{Input ports with pull-high 12kW resistor. These pads can function as Left, Right,}
Middle, B4 and B5 button lines.
7
VSS
¾ Negative power supply, ground
9, 10
X, X2
I X-axis photo input
11, 12
Y1, Y2
I Y-axis photo input
13
RESET
I Chip reset input, low active
14
VDD
¾ 5V positive power supply
15
OSC1
I 6MHz OSC input
16
OSC2
O 6MHz OSC output
Rev. 1.30
1
October 29, 2002