Pin Description

Pin Name

I/O

Description

VSS

¾

Negative power supply, ground

V33O

O

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

I

Chip reset input, low active

SEL1

SEL0

I

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

I

Serial data for Agilent sensor IC SCLK

RB0, RB1

L, R, M

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, B4 and B5

button input lines.

Z1, Z2

I

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

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.

HT82M23A/HT82M23B/HT82M23C

Rev. 1.10

3

January 22, 2007