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DS1973: iButton 4Kb EEPROM Data Sheet (Rev. 4)9/16/2009PDF69K
概览
优势和特点
- 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
产品详情
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.
产品生命周期
量产
该产品系列中至少有一个型号已量产并可供采购。该产品适合用于新设计，但也可能有更新的替代产品。
参考资料
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DS1973 Reliability Data1/12/2023PDF21K
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1-Wire搜索算法12/5/2003
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Reading and Writing 1-Wire® Devices Through Serial Interfaces3/29/2001
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iButton Data Loggers5/17/2019
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为1-Wire®器件的扩展功能供电11/20/2008
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White Paper 2: Using the 1-Wire® Public Domain Kit7/16/2008
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什么是iButton器件?10/5/2006
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用软件实现1-Wire®通信9/16/2004
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长线1-Wire网络可靠设计指南8/25/2004
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理解和运用Maxim iButton产品中的循环冗余校验(CRC)8/25/2004
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DS2480B串行接口1-Wire®线驱动器的使用8/6/2004
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1-Wire软件资源指南和器件说明6/28/2004
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在iButton®应用中通过软件方法实现可靠的1-Wire®通信12/5/2003
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White Paper 5: Using 1-Wire APIs for Data Sheet Commands6/7/2002
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Programming 1-Wire EPROM and EEPROM Memory Devices Using a PC1/2/2002
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1-Wire File Structure7/11/2001
设计资源
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