Abstract: An iButton is a chip housed in a stainless steel enclosure. To keep the cost of access low, the electrical interface is reduced to an absolute minimum, i.e., one data line plus ground (also called 1-Wire®). The energy needed for communication is "stolen" from the data line ("parasitic power"). In some ways the family of iButton devices vary greatly. There are iButtons that contain only a unique registration (ROM) number and there are iButtons that have read/write memory, real-time clocks, and temperature loggers. However, with respect to mechanical and network level commands all compliant readers can read them. This document explains all of the relevant specifications for mechanical, electrical, and protocol for the iButton family of products. Most of the information is also applicable to the 1-Wire products not in the iButton package. 你所查询的应用笔记提供Acrobat PDF格式： APPLICATION NOTE 937:Book of iButton Standards (PDF, 1.0MB) 免费Acrobat PDF阅读软件可从以下网站获得： http://chinese-s.adobe.com/products/acrobat/readstep2.html 我们期待您的反馈！ 喜欢？不喜欢？有待改善？或为我们提供建议？请与我们联系 — 我们将根据您的意见或建议改善我们的工作。 网页评价或提供建议 自动更新 需要自动接收最新发布的应用笔记吗？请订阅EE-Mail™ (English only)。 更多信息   APP 937: Jan 16, 2002 DS1920 温度检测iButton® 完整的数据资料 (PDF, 560kB) DS1982 1K位只添加iButton® 完整的数据资料 (PDF, 564kB) 免费样品 DS1985 16K位只添加iButton® 完整的数据资料 (PDF, 708kB) 免费样品 DS1986 64K位只添加iButton® 完整的数据资料 (PDF, 688kB) DS1990A 序列号iButton 完整的数据资料 (PDF, 456kB) 免费样品 DS1991 多密钥iButton 完整的数据资料 (PDF, 576kB) DS1992 1K位/4K位存储器iButton® 完整的数据资料 (PDF, 348kB) 免费样品 DS1993 1K位/4K位存储器iButton® 完整的数据资料 (PDF, 348kB) 免费样品 DS1994 4K位、带有时钟的存储器iButton® 完整的数据资料 (PDF, 732kB) DS1995 16K位存储器iButton® 完整的数据资料 (PDF, 68kB) DS1996 64k位存储器iButton® 完整的数据资料 (PDF, 352kB)   下载，PDF格式 (1.0MB)  AN937, AN 937, APP937, Appnote937, Appnote 937