64KbアドオンリーiButton®

概要

技術資料

オーダー情報

ステータス

全バージョンが製造を中止しています。推奨置換品についてはオーダー情報をご覧ください。

製品概要

The DS1986 64Kb Add-Only 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 microcontroller. The DS1986 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 (0Fh) plus 64Kb of EPROM which is user-programmable. The power to program and read the DS1986 is derived entirely from the 1-Wire communication line. Data is transferred serially via the 1-Wire protocol which requires only a single data lead and a ground return. The entire device can be programmed and then write-protected if desired. Alternatively, the part may be programmed multiple times with new data being appended to, but not overwriting, existing data with each subsequent programming of the device. Note: Individual bits can be changed only from a logical 1 to a logical 0, never from a logical 0 to a logical 1. A provision is also included for indicating that a certain page or pages of data are no longer valid and have been replaced with new or updated data that is now residing at an alternate page address. This page address redirection allows software to patch data and enhance the flexibility of the device as a standalone database. The 48-bit serial number that is factory-lasered into each DS1986 provides a guaranteed unique identity which allows for absolute traceability. 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 DS1986 to be used easily by human operators or automatic equipment. Accessories permit the DS1986 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, storage of calibration constants, and debit tokens.

データシート

英語	ダウンロードする	Rev 3	(PDF, 780kB)
	Eメール

主な特長

65536 bits Electrically Programmable Read Only Memory (EPROM) communicates with the economy of one signal plus ground
Overdrive mode boosts communication speed to 142 kbits per second
EPROM partitioned into two hundred and 56 256-bit pages for randomly accessing packetized data records
Each memory page can be permanently write-protected to prevent tampering
Device is an "add only" memory where additional data can be programmed into EPROM without disturbing existing data
Architecture allows software to patch data by superseding an old page in favor of a newly programmed page
Reduces control, address, data, power, and programming signals to a single data pin
8-bit family code specifies DS1986 communications requirements to reader
Reads over a wide voltage range of 2.8V to 6.0V from -40°C to +85°C; programs at 11.5V to 12.0V from -40°C to +85°C

図

お探しの製品が見つかりませんか？

アプリケーションエンジニアによる製品選択サポート(翌営業日中に回答)
パラメトリック検索
アプリケーションヘルプ

情報インデックス

概要		技術資料		オーダー情報		関連製品
製品概要主な特長アプリケーション/用途主要スペック図注記およびコメント		データシートアプリケーションノート評価キット製品ガイド信頼性レポートソフトウェア/モデル		価格および入手性サンプルオンライン購入パッケージ情報鉛フリー情報		類似機能製品類似アプリケーション製品評価キット類似型番の製品併用製品

参考文献： 19-4893 Rev 3; 2009-09-16
このページの最終更新日： 2009-10-27