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公开(公告)号:US06876594B2
公开(公告)日:2005-04-05
申请号:US10739520
申请日:2003-12-19
申请人: Roger C. Griesmer , Robert L. Pitts , Bryan D. Sheffield , Kun-His Li , Mark J. Jensen , Vinod J. Menezes
发明人: Roger C. Griesmer , Robert L. Pitts , Bryan D. Sheffield , Kun-His Li , Mark J. Jensen , Vinod J. Menezes
IPC分类号: H01L21/82 , G11C8/20 , G11C11/56 , G11C17/16 , G11C17/18 , G11C29/02 , H03K19/177 , G11C7/00
CPC分类号: G11C29/02 , G11C8/20 , G11C11/56 , G11C17/16 , G11C17/18 , G11C29/027 , G11C2216/26
摘要: An integrated circuit (IC). The integrated circuit comprises an array (14) of data cells arranged in a plurality of rows and a plurality of columns. Each of the data cells comprises an electrically programmable fuse (40), and each electrically programmable fuse comprises a current path for providing a first digital state when the current path is left intact and for providing a second digital state when the current path is destroyed. Each row of the plurality of rows comprises at least one cell reserved for providing a protection indicator for the row, wherein the protection indicator is selected from a set consisting of read protection and write protection. The integrated circuit also comprises control circuitry (12) for selectively destroying the programmable fuse in selected ones of the data cells in a programmation mode. The integrated circuit also comprises control circuitry (12) for reading selected ones of the data cells in a read mode.
摘要翻译: 集成电路(IC)。 集成电路包括布置成多行和多列的数据单元的阵列(14)。 每个数据单元包括电可编程熔丝(40),并且每个电可编程熔丝包括电流路径,用于当当前路径保持原状时提供第一数字状态,并且当当前路径被破坏时提供第二数字状态。 多行中的每行包括至少一个保留用于为该行提供保护指示符的单元,其中保护指示符是从由读保护和写保护组成的集合中选择的。 集成电路还包括用于以编程模式选择性地破坏所选数据单元中的可编程熔丝的控制电路(12)。 集成电路还包括用于在读取模式下读取所选数据单元的控制电路(12)。