DS2502/5/6-UNW

2 of 3

102099

depending on the length of the customer-supplied data. This leaves up to three (DS2502-UNW), 63

(DS2505-UNW) or 255 (DS2506-UNW) memory pages available for programming in the application.

For more details on UniqueWare and how to set up data files, please refer to the UniqueWare Project

Setup Manual, available as Application Note 99 from Dallas Semiconductor. The UniqueWare Project

Setup Software is available from the Dallas Semiconductor FTP Site at

ORDERING INFORMATION

Memory Size

Family Code

Package

Ordering Part Number

1024 bits

89h

TO-92 package

DS2502-UNW-pppp

(4 pages)

8-pin 150 mil SOIC pkg.

DS2502S-UNW-pppp

6-pin TSOC package

DS2502P-UNW-pppp

16k bits

8Bh

TO-92 package

DS2505-UNW-pppp

(64 pages)

6-pin TSOC package

DS2505P-UNW-pppp

64k bits

8Fh

PR-35 package

DS2506-UNW-pppp

(256 pages)

8-pin 208 mil SOIC pkg.

DS2506S-UNW-pppp

pppp stands for the Project ID assigned to each individual data pattern at the time of the first order.

Sample UniqueWare Data Structures

SAMPLE 1: ETHERNET NODE ADDRESS Figure 1a

(unused)

CRC16

Company ID Value

Extension ID Value

Project ID

Length

MSB

LSB

MSB

LSB

MSB

LSB

MSB LSB

19 bytes

2 bytes

3 bytes constant

3 bytes serialization

4 bytes

1 byte

FFH

assigned by IEEE

constant

0AH

high address

low address

PHYSICAL ADDRESS AND DATA MAPPING Figure 1b

ADDRESS

0C

0B

0A

09

08

07

06

05

04

03

02

01

00

DATA

xx

xx

ch

cm

cl

hh

mm

ll

00

00

pp

pp

0A

xx xx = CRC16, value depends on actual data

ch cm cl = high, medium and low byte of the IEEE assigned “Company ID”

hh mm ll = high, medium and low byte of the “Extension ID” or serialization

pp pp = Project ID assigned by Dallas Semiconductor