DS1973-F5# ,iButton 4Kb EEPROMFEATURES 4096 bits Electrically Erasable Programmable Unique, factory-lasered and tested 64-bit ..
DS1973-F5+ ,iButton 4Kb EEPROMblock diagram in Figure 1 shows the relationships between the major control and memory sections of ..
DS1977-F5 ,32KB EEPROM iButtonFeaturesThe DS1977 is a 32Kbyte EEPROM in a rugged,• 32KB EEPROM memoryiButton enclosure. Access to ..
DS1977-F5# ,iButton 32KB EEPROMAPPLICATIONS and Absolute Traceability Because No Two Parts Maintenance/Inspection Data Storage are ..
DS1982-F3# ,iButton 1Kb Add-OnlyFEATURES 1024 bits Electrically Programmable Read- Unique, factory-lasered and tested 64-bit Onl ..
DS1982-F3+ ,iButton 1Kb Add-Only19-4891; Rev 8/09 DS1982 1Kb Add-Only iButton SPECIAL
DS1973-F5#-DS1973-F5+
iButton 4Kb EEPROM
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 iButton Probe
19-4889; Rev 8/09
DS1973
4Kb EEPROM iButton
DS1973
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
3 of 3
REVISION HISTORY
REVISION
DATE DESCRIPTION PAGES
CHANGED 071508 Updated the F3 MicroCan and F5 MicroCan face brands with the latest
per PCN H020201. 1
8/09
Added the + sign to the PART numbers in the Ordering Information
table, indicating lead(Pb)-free/RoHS-compliant packages. 1
Removed the UL#913 bullet from the Common iButton Features
section. 1
This datasheet has been :
www.ic-phoenix.com
Datasheets for electronic components.
