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DS1994L-F5 Datasheet(PDF) 1 Page - Dallas Semiconductor |
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DS1994L-F5 Datasheet(HTML) 1 Page - Dallas Semiconductor |
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1 / 22 page  1 of 22 031403 SPECIAL FEATURES § 4096 bits of Read/Write Nonvolatile Memory § 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 § Contains Real-Time Clock/Calendar in Binary Format § Interval Timer Can Automatically Accumulate Time When Power is Applied § Programmable Cycle Counter can Accumulate the Number of System Power- On/Off Cycles § Programmable Alarms Can Be Set to Generate Interrupts for Interval Timer, Real- Time Clock, and/or Cycle Counter § Write-Protect Feature Provides Tamperproof Time Data § Programmable Expiration Date That Limits Access to SRAM and Timekeeping § Clock Accuracy is Better Than ±2 Minutes/ Month at 25°C § 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 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 § Meets UL#913 (4th Edit.); Intrinsically Safe Apparatus, Approved under Entity Concept for Use in Class I, Division 1, Group A, B, C and D Locations F5 MICROCAN IO GND 0.36 0.51 5.89 © 1993 YYWW REGISTERED RR 61 04 000000FBD804 16.25 17.35 All dimensions shown in millimeters. ORDERING INFORMATION DS1994L-F5 F5 MicroCan DS1994 4kb Plus Time Memory iButton www.iButton.com iButton and 1-Wire are registered trademarks of Dallas Semiconductor. |
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