iButton 4K位EEPROM



The iButton® 4Kb EEPROM (DS1973) 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 micro-controller. The DS1973 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 (23H) plus 4096 bits of EEPROM. The power to program and read the DS1973 is derived entirely from the 1-Wire® communication line. The memory is organized as sixteen pages of 256 bits each. The 64-bit registration number provides a guaranteed unique identity which allows for absolute traceability. Data is transferred serially via the 1-Wire protocol which requires only a single data lead and a ground return. 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 DS1973 to be used easily by human operators or automatic equipment. Accessories permit the DS1973 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.


  • 4096 bits Electrically Erasable Programmable Read Only Memory (EEPROM)
  • Overdrive mode boosts communication speed to 142kbps
  • 256-bit scratchpad ensures integrity of data transfer
  • Memory partitioned into 256-bit pages for packetizing data
  • Reduces control, address, data and power to a single data pin
  • 8-bit family code specifies DS1973 communication requirements to reader
  • Reads and writes over a wide voltage range of 2.8V to 6.0V from -40°C to +85°C

请查看具体的参数规格 iButton Products (17)

Part NumberTechnologyApplicationsMemory TypeMemory SizeUnique WareReal Time ClockBudgetary
See Notes
DS1973 iButtonAsset ManagementEEPROM4K bitsNoNo$3.60 @1k

Pricing Notes:
产品可靠性报告: DS1973.pdf 
型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C   Material Composition  

备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

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