SPECIAL FEATURES

■ 4096 bits of Read/Write Nonvolatile

    Memory (DS1993)

■ 1024 bits of Read/Write Nonvolatile

    Memory (DS1992)

■ 256-bit Scratchpad Ensures Integrity of Data

    Transfer

■ Memory Partitioned into 256-bit Pages for

    Packetizing Data

■ Data Integrity Assured with Strict

    Read/Write Protocols

■ Operating Temperature Range from -40°C to

    +70°C

■ Over 10 years of data retention

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 Traceability 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 CupShaped 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

■ Meets UL 913, 5th Ed., Rev. 1997-02-24;

    Intrinsically Safe Apparatus, Approved under

    Entity Concept for use in Class I, Division 1,

    Group A, B, C, and D Locations