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DS1961S

Dallas Semiconducotr
Part Number DS1961S
Manufacturer Dallas Semiconducotr
Description 1kb Protected EEPROM iButton With SHA-1 Engine
Published Oct 26, 2005
Detailed Description DS1961S www.maxim-ic.com 1kb Protected EEPROM iButton With SHA-1 Engine SPECIAL FEATURES § 1128 Bits of 5V EEPROM Memo...
Datasheet PDF File DS1961S PDF File

DS1961S
DS1961S

Overview
DS1961S www.
maxim-ic.
com 1kb Protected EEPROM iButton With SHA-1 Engine SPECIAL FEATURES § 1128 Bits of 5V EEPROM Memory Partitioned into Four Pages of 256 Bits, a 64Bit Write-Only Secret, and up to Five General-Purpose Read/Write Registers Write Access Requires Knowledge of the Secret and the Capability of Computing and Transmitting a 160-Bit MAC (Message Authentication Code) as Authorization Secret and Data Memory can be WriteProtected (All or Page 0 Only) or put in EPROM-Emulation Mode (“Write to 0”, Page 1) On-Chip, 512-Bit SHA-1 Engine to Compute 160-Bit MACs and Generate Secrets Reads and Writes Over a Wide 2.
8V to 5.
25V Voltage Range from -40°C to +85°C Communicates to Host with a Single Digital Signal at 14.
1kbps using 1-Wire® Protocol On-Chip, 16-Bit Cyclic Redundancy Check (CRC) Generator for Safeguarding Data Transfers Overdrive Mode Boosts Communication Speed to 125kbps Operating Temperature Range from -40°C to +85°C Minimum 10 Years of Data Retention at +85°C § § § § § § § § § § § § § § 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 (4th Edit.
).
Intrinsically Safe Apparatus: Approved Under Entity Concept for use in Class I, Division 1, Groups A, B, C, and D Locations (Application Pending) F5 MicroCan 5.
89 0.
36 0.
51 © 1993 16.
25 RR YYWW REGISTERED xx 33 17.
35 000000FBD8B3 IO GND F3 MicroCan 3.
10 0.
36 0.
51 © 1993 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 1-Wire Net Digital Identification and Information by Momentary Contact Chip-Based Data Carrier Compactly Store...


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