DS1971:iButton 256位EEPROM

The iButton® 256-bit EEPROM (DS1971) 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 DS1971 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 (14H) plus 256 bits of EEPROM. The power to program and read the DS1971 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 48-bit serial number that is factory-lasered into each DS1971 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 DS1971 to be used easily by human operators or automatic equipment. Accessories permit the DS1971 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 and storage of calibration constants.

关键特性
  • 256-bit Electrically Erasable Programmable Read Only Memory (EEPROM) communicates with the economy of one signal plus ground
  • EEPROM organized as one 256-bit page
  • 64-bit one-time programmable application register is automatically write-protected after programming
  • Reduces control, address, data, power, and programming signals to a single data pin
  • 8-bit family code specifies DS1971 communications requirements to reader
  • Reads and writes over a wide voltage range of 2.8V to 6.0V from -40°C to +85°C
数据手册DataSheet
语言下载文件备注
英文DS1971.pdfRev 4; 07/2009
关键参数
Part NumberTechnologyApplicationsMemory TypeMemory SizeUnique WareReal Time ClockBudgetary
Price
See Notes
DS1971iButtonAsset ManagementEEPROM256 bitsNoNo$2.64 @1k
技术资料
质量和环境数据
订购型号
型号状况推荐替代产品封装温度RoHS/无铅
DS1971-F3+生产中CAN-F3,;2引脚;301mm²-40°C至+85°CRoHS/无铅:无铅
DS1971-F5+生产中CAN-F5,;2引脚;301mm²-40°C至+85°CRoHS/无铅:无铅
DS1971.pdf DS1971
DS1971.pdf DS1971
DS1971.pdf DS1971
Understanding the DS1WM Synthesizable 1-Wire Bus Master DS1923
White Paper 5: Using 1-Wire APIs for Data Sheet Commands DS1921K
White Paper 2: Using the 1-Wire® Public Domain Kit DS9097U-S09
Reading and Writing 1-Wire® Devices Through Serial Interfaces DS1923
DS1971.pdf DS1971
DS1992-DS1993.pdf DS1992