DS1973-F5+ Datasheet DS1973-F5+, DS1973-F3+ | P1-P3

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SPECIAL FEATURES

 4096 bits Electrically Erasable Programmable

Read Only Memory (EEPROM)

 Overdrive mode boosts communication speed

to 142kbps

 256-bit scratchpad ensures integrity of data

transfer

 Memory partitioned into 256-bit pages for

packetizing data

 Reduces control, address, data and power to a

single data pin

 8-bit family code specifies DS1973

communication requirements to reader

 Reads and writes over a wide voltage range of

2.8V to 6.0V from -40°C to +85°C

F3 MicroCan

F5 MicroCan

COMMON iButton FEATURES

 Unique, factory-lasered and tested 64-bit

registration number (8-bit family code +

48-bit serial number + 8-bit CRC tester)

assures absolute identity because no two

parts are alike

 Multidrop controller for MicroLAN

 Digital identification and information by

momentary contact

 Chip-based data carrier compactly stores

information

 Data can be accessed while affixed to object

 Economically communicates to bus master

with a single digital signal at 16.3kbps

 Standard 16mm diameter and 1-Wire

protocol ensure compatibility with iButton

family

 Button shape is self-aligning with cup-

shaped probes

 Durable stainless steel case engraved with

registration number withstands harsh

environments

 Easily affixed with self-stick adhesive

backing, latched by its flange, or locked with

a ring pressed onto its rim

 Presence detector acknowledges when reader

first applies voltage

ORDERING INFORMATION

PART PIN-PACKAGE

DS1973-F3+ F3 MicroCan

DS1973-F5+ F5 MicroCan

+Denotes a lead(Pb)-free/RoHS-compliant package.

EXAMPLES OF ACCESSORIES

DS9096P Self-Stick Adhesive Pad

DS9101 Multi-Purpose Clip

DS9093RA Mounting Lock Ring

DS9093A Snap-In Fob

DS9092 i

Button Probe

iButton and 1-Wire are registered trademarks of Maxim Integrated Products, Inc.

19-4889; Rev 8/09

DS1973

4Kb EEPROM i

Button

DS1973

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iButton DESCRIPTION

The DS1973 4Kb EEPROM iButton is a rugged read/write data carrier that identifies and stores relevant

information about the product or person to which it is attached. This information can be accessed with

minimal hardware, for example a single port pin of a micro-controller. The DS1973 consists of a factory-

lasered registration number that includes a unique 48-bit serial number, an 8-bit CRC, and an 8-bit

Family Code (23H) plus 4096 bits of EEPROM. The power to program and read the DS1973 is derived

entirely from the 1-Wire communication line. The memory is organized as sixteen pages of 256 bits each.

The 64-bit registration number provides a guaranteed unique identity which allows for absolute

traceability. Data is transferred serially via the 1-Wire protocol which requires only a single data lead and

a ground return. The durable MicroCan package is highly resistant to harsh environments such as dirt,

moisture, and shock. Its compact button-shaped profile is self-aligning with cup-shaped receptacles,

allowing the DS1973 to be used easily by human operators or automatic equipment. Accessories permit

the DS1973 to be mounted on printed circuit boards, plastic key fobs, photo-ID badges, ID bracelets, and

many other objects. Applications include work-in-progress tracking, electronic travelers, access control

and storage of calibration constants.

OVERVIEW

The block diagram in Figure 1 shows the relationships between the major control and memory sections of

the DS1973. The DS1973 has three main data components: 1) 64-bit lasered ROM, 2) 256-bit scratchpad,

and 3) 4096-bit EEPROM. The bus master must first provide one of the ROM function commands before

the memory functions become accessible. All data is read and written least significant bit first.

The DS1973 contains the same memory chip as the DS2433. For a full description of the logical

behavior, please refer to the DS2433 data sheet.

DS1973 BLOCK DIAGRAM Figure 1

DS1973

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Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. Maxim cannot assume responsibility for use of

any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and

specifications without notice at any time.

Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600

REVISION HISTORY

REVISION

DATE

DESCRIPTION

PAGES

CHANGED

071508

Updated the F3 MicroCan and F5 MicroCan face brands with the latest

per PCN H020201.

8/09

Added the + sign to the PART numbers in the Ordering Information

table, indicating lead(Pb)-free/RoHS-compliant packages.

Removed the UL#913 bullet from the Common iButton Features

section.

P1-P3

DS1973-F5+

Mfr. #:

Buy DS1973-F5+

Manufacturer:

Maxim Integrated

Description:

iButtons & Accessories 4Kb EEPROM iButton

Lifecycle:

New from this manufacturer.

Delivery:

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DS1973-F5+

DS1973-F5+

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