/home/web/doc/html/holtek/189449

HT82M23A/HT82M23B/HT82M23C

3/5-Key USB+PS/2 Optical Mouse Controller

Selection Table

Part No.

Interface

Mode

USB Product ID

Package

HT82M23A

USB and PS/2

Windows 2000

048EH

20DIP/SOP

HT82M23B

USB and PS/2

0499H

18DIP/SOP

HT82M23C

USB only

0499H

18DIP/SOP

Rev. 1.00

January 25, 2006

Features

Operating voltage: 4.4V~5.25V

Compatible with Microsoft Windows 2000 and
5-button Wheel Mouse

Microsoft 3D Intelli mouse and IBM PS/2 mouse
compatible

Supports 3/5 buttons and Z-axis input

Z-axis can support two kinds of scroller input
(optomechanical and mechanical)

3 key or 5 key mode can be selected by package

Complete Universal Serial Bus specs V1.1
compatibility

Serial Bus Interface Engine (SIE)

USB transceiver

Single chip solution especially for USB mouse
function

HALT function and wake-up feature reduce power
consumption

Plug and Play functions

Minimal external components

6MHz crystal oscillator for system clock

Interface compliant with ADNS-2051, ADNS-2610
and ADNS-2620

Pass WHQL, USB-IF and EMC testing

HT82M23A is pin compatible with HT82M22A

HT82M23B/HT82M23C is pin compatible with
HT82M21A

HT82M23A: 20-pin DIP/SOP package
HT82M23B/HT82M23C: 18-pin DIP/SOP package

General Description

HT82M23A/HT82M23B/HT82M23C is a Plug and Play
Windows 2000 and 5-button 3D USB+PS/2 Mouse con-
troller. The HT82M23A/HT82M23B/HT82M23C can
support the USB Standard Request as well as HID Class
Request version 1.1. It is compatible with Microsoft Intelli
3D or Windows 2000 5 key PS/2 mouse. The Z-axis can
support two kinds of scroller input, namely; mechanical
and optomechanical. It requires minimal external com-

ponents to implement 3D or Windows 2000 5 key USB

plus PS/2 mouse. All its features combined and make
up this versatile Holtek 8-bit MCU with an on-chip USB
interface logic. The USB is specified by the

Universal

Serial Bus Specification V1.1.

The USB vendor ID for HT82M23A/HT82M23B/
HT82M23C is defined as 04D9H, the USB product ID is
different by different package

Block Diagram

Pin Assignment

HT82M23A/HT82M23B/HT82M23C

Rev. 1.00

January 25, 2006

V S S

V 3 3 O

U S B D + / C L K

U S B D - / D A T A

R E S E T

S E L 1
S D I O

S C L K

S E L 0

R B 0

O S C 1
O S C 2
V D D
L E D
M
R
L
Z 2
Z 1
R B 1

H T 8 2 M 2 3 A

2 0 D I P - A / S O P - A

2 0
1 9
1 8
1 7
1 6
1 5
1 4
1 3
1 2
1 1

1
2
3
4
5
6
7
8
9
1 0

1 8
1 7
1 6
1 5
1 4
1 3
1 2
1 1
1 0

1
2
3
4
5
6
7
8
9

H T 8 2 M 2 3 B / H T 8 2 M 2 3 C

1 8 D I P - A / S O P - A

V S S

V 3 3 O

U S B D + / C L K

U S B D - / D A T A

R E S E T

S E L 1
S D I O

S C L K

S E L 0

O S C 1
O S C 2
V D D
L E D
M
R
L
Z 2
Z 1

U S B

T r a n s c e i v e r

U S B

R e c e i v e r

U S B

T r a n s m i t t e r

V o l t a g e

R e g u l a t o r

C l o c k

G e n e r a t o r

R C

R E S E T

R e g i s t e r

S e t

M a i n

S t a t e m a c h i n e

S u s p e n s i o n

C o n t r o l

U S B S e r i a l

I n t e r f a c e E n g i n e

( S I E )

a n d

C o n t r o l

L o g i c

H o l t e k

8 - b i t

M i c r o c o n t r o l l e r

F I F O s ´ 2

U S B D +

U S B D -

V 3 3 O

O S C 1
O S C 2

V D D

V S S

Pin Description

Pin Name

I/O

Description

VSS

Negative power supply, ground

V33O

3.3V voltage output

USBD+/CLK

I/O

USB data plus or PS2 Clock, F/W auto-detect USBD+ for USB, CLK for PS2

USBD

-/DATA

I/O

USB data minus or PS2 Data, F/W auto-detect USB

- for USB, DATA for PS2

RESET

Chip reset input, low active

SEL1
SEL0

Configuration selections

SEL1=0: Z-axis is divided by 2 (default)
SEL1=1: Z-axis is divided by 4

For ADNS 2051:

SEL0=0: 800DPI (default)
SEL0=1: 400DPI

For ADNS 2610/2620:

SEL0=0, 400DPI (default)
SEL0=1, 800DPI-by firmware

SDIO

I/O

Serial data for Agilent sensor IC SDIO

SCLK

Serial data for Agilent sensor IC SCLK

RB0, RB1
L, R, M

Click button detection. Input ports with 30k

W pull-high resistor.

Input ports with pull-high resistor. These pads can function as Left, Right, Middle, B4 and B5
button input lines.

Z1, Z2

Z-axis input supports two kinds of scroller input; optomechanical and mechanical.

LED

I/O

Drives LED output

VDD

5V positive power supply

OSC2

6MHz OSC output

OSC1

6MHz OSC input

Absolute Maximum Ratings

Supply Voltage ..............................V

-0.3V to V

+6V

Storage Temperature ............................

-50°C to 125°C

MCU Input Voltage.....................V

-0.3V to V

+0.3V

Operating Temperature...........................

-25°C to 70°C

USB Input Voltage ....................V

-0.3V to V

33O

+0.3V

Note: These are stress ratings only. Stresses exceeding the range specified under

²Absolute Maximum Ratings² may

cause substantial damage to the device. Functional operation of this device at other conditions beyond those
listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliabil-
ity.

HT82M23A/HT82M23B/HT82M23C

Rev. 1.00

January 25, 2006

D.C. Characteristics

Ta=25

°C

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

Conditions

Operating Voltage

4.4

5.25

Operating Current
(Crystal OSC)

No load,
f

SYS

=6MHz

USB mode

PS/2 mode

SUS

USB Suspend Mode

No load, system HALT

250

IL1

Input Low Voltage
(Z1, Z2, L, M, R)

1.0

IH1

Input High Voltage
(Z1, Z2, L, M, R)

3.5

IL2

Input Low Voltage (RESET)

1.5

IH2

Input High Voltage (RESET)

3.5

POR

Built-in Power on Reset V

Detection Voltage

3.7

Sink Current (LED)

=0.8V

A.C. Characteristics

Ta=25

°C

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

Conditions

SYS

System Clock (Crystal OSC)

6000

kHz

Note: t

SYS

=1/f

SYS

Timing Diagram

Z-axis Photo-Coupler Crossed Width

Z-axis Counting

HT82M23A/HT82M23B/HT82M23C

Rev. 1.00

January 25, 2006

Z 1

Z 2

N o t e : F o r Z - a x i s t

, t

> 1 m s

Z 1

Z 2

+ 1

- 1

HT82M23A/HT82M23B/HT82M23C

Rev. 1.00

January 25, 2006

Functional Description

PS/2 Mouse

PS/2 status byte

Byte 1

Bit 7: Reserved

Bit 6: 0=Stream Mode, 1=Remote Mode

Bit 5: 0=Disabled, 1=Enabled

Bit 4: 0=Scaling 1:1, 1=Scaling 2:1

Bit 3: 1=Wrap Mode, 0=Stream or Remote

(different from IBM specs.)

Bit 2: 1=Left Button Pressed

Bit 1: 1=Middle Button Pressed

Bit 0: 1=Right Button Pressed

Byte 2

Bit 0~7 current resolution setting
(Bit 0=LSB)

Byte 3

Bit 0~7 current sampling rate (Bit 0=LSB)

Standard PS/2 data format (HT82M23A/HT82M23B)

Bit No.

1st word

2nd word

3rd word

Data format for 3D PS/2 (HT82M23A/HT82M23B)

Bit No.

1st word

2nd word

3rd word

4th word

Note:

The X/Y data report is 9-bit 2

¢s complement

The Z data report is 8-bit 2

¢s complement

Data format for 5-button Wheel Mouse (HT82M23A)

Bit No.

1st word

2nd word

3rd word

4th word

RB1 RB0 Z3

Note:

X- movement towards the right is positive, mov-
ing towards the left is negative

Y- upward movement is positive, moving down
is negative

Z- rolling towards the user is positive, else negative

Button status: 1=pressed, 0=released

For HT82M23B/HT82M23C, mouse mode changes
between Standard and 3D PS/2 mode.
Sending the commands in the following sequence will
set the mouse to 3D PS/2 mode.

Command

Response From Mouse

F3h

FAh

C8h

FAh

F3h

FAh

64h

FAh

F3h

FAh

50h

FAh

F2h

FAh, 03h

For HT82M23A, mouse mode changes between
Standard and Windows 2000 PS/2 mode.
Sending the commands in the following sequence will
set the mouse to Windows 2000 PS/2 mode.

Command

Response From Mouse

F3h

FAh

C8h

FAh

F3h

FAh

C8h

FAh

F3h

FAh

50h

FAh

F2h

FAh, 04h

Any time the PC sends a reset

²FFh² command to

the mouse, it will reset the mouse to Standard PS/2
mode.

After power-on reset is initiated, the mouse is set to
Standard PS/2 mode.

USB mouse data format for 3D mod
(HT82M23A/HT82M23B/HT82M23C)

Bit No.

1st word

2nd word

3rd word

4th word

Data format for Windows 2000 mode (HT82M23A)

Bit No.

1st word

RB1 RB1

2nd word

3rd word

4th word

Note:

X- movement towards the right is positive, mov-
ing towards the left is negative

Y- upward movement is negative, moving down
is positive

Z- rolling towards the user is negative, else positive

Button status: 1=pressed, 0=released

Part Number HT82M23B