DS1992 - iButton 1K位/4K位存储器

DS1992是Maxim美信半导体公司的一款iButton器件产品，DS1992是iButton 1K位/4K位存储器，本站介绍了DS1992的封装应用图解、特点和优点、功能等，并给出了与DS1992相关的Maxim元器件型号供参考。

DS1992 - iButton 1K位/4K位存储器 - iButton器件 - Maxim美信半导体高性能芯片品质 - 美信半导体

产品概述

The iButton® 1Kb/4Kb memory (DS1992) is a rugged read/write data carrier that act as a localized database, easily accessible with minimal hardware. The nonvolatile memory and optional timekeeping capability offer a simple solution to storing and retrieving vital information pertaining to the object to which the iButton device is attached. Data is transferred serially through the 1-Wire® protocol that requires only a single data lead and a ground return.

The scratchpad is an additional page that acts as a buffer when writing to memory. Data is first written to the scratchpad where it can be read back. After the data has been verified, a copy scratchpad command transfers the data to memory. This process ensures data integrity when modifying the memory. A 48-bit serial number is factory lasered into each DS199_ to provide a guaranteed unique identity that allows for absolute traceability. The durable MicroCan® package is highly resistant to environmental hazards such as dirt, moisture, and shock. Its compact coin-shaped profile is self-aligning with mating receptacles, allowing the DS199_ to be easily used by human operators. Accessories permit the DS199_ to be mounted on almost any surface including plastic key fobs, photo-ID badges, and PC boards. Applications include access control, work-in-progress tracking, electronic travelers, storage of calibration constants, and debit tokens.

关键特性

以下关键特性由Maxim美信半导体提供：

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

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, 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

热门应用

借计卡

电子旅行助理

校准系数存储

工作流程跟踪

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