Pin Assignment

Pin Description

Pin Name

I/O

Description

VSS

¾

Negative power supply, ground

V33O

O

3.3V voltage output

USBD+

I/O

USB data plus, F/W auto-detect USBD+ for USB.

USBD

-

I/O

USB data minus, F/W auto-detect USB

- for USB.

RESET

I

Chip reset input, low active

SDIO

I/O

Serial data for optical sensor IC SDIO

SCLK

O

Serial data for optical sensor IC SCLK

I

DPI selection, N/C or GND(connect to a 5.1k

W pull-down resistor)

For A2610, A2620: N/C-800dpi; GND-400dpi

For A5020: N/C-1000dpi; GND-500dpi

For P3101: N/C-800dpi; GND-1600dpi

RB0, RB1, L,

R, M, L_TILT,

R_TILT

I

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, RB0, RB1,

L_TILT and R_TILT button input lines.

Z1, Z2

I

Z-axis input supports only Z/2 encoder scroller input.

LED

I/O

Drives LED output

VDD

¾

5V positive power supply

OSC2

O

6MHz OSC output

OSC1

I

6MHz OSC input

Absolute Maximum Ratings

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

-50°Cto125°C

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

-25°Cto70°C

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.

HT82M28A

Rev. 1.00

2

July 20, 2007

V S S

V 3 3 O

U S B D +

U S B D -

R E S E T

L _ T I L T

R _ T I L T

S C L K

S D I O

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 8 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