发明授权
- 专利标题: Method and apparatus of local word-line redundancy in CAM
- 专利标题(中): CAM中局部字线冗余的方法和装置
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申请号: US10199788申请日: 2002-07-19
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公开(公告)号: US06920525B2公开(公告)日: 2005-07-19
- 发明人: Thomas B. Chadwick , Tarl S. Gordon , Rahul K. Nadkarni , Michael R. Ouellette , Jeremy Rowland
- 申请人: Thomas B. Chadwick , Tarl S. Gordon , Rahul K. Nadkarni , Michael R. Ouellette , Jeremy Rowland
- 申请人地址: US NY Armonk
- 专利权人: International Business Machines Corporation
- 当前专利权人: International Business Machines Corporation
- 当前专利权人地址: US NY Armonk
- 代理机构: Whitham, Curtis & Christofferson, P.C.
- 代理商 Robert A. Walsh
- 主分类号: G11C15/00
- IPC分类号: G11C15/00 ; G11C29/00 ; G06F12/00
摘要:
A local word-line redundancy architecture and method that implements both word-line and match-line steering for semiconductor memories and more particularly for content-addressable memories (CAM) are introduced. According to the present invention, the method of performing local word-line redundancy comprising: testing by using BIST, storing results, comparing failing read address data and failing match-line address data to determine if redundancy is possible and, if so, storing the redundancy repair data pattern and loading that patten upon initialization so that redundancy steering is activated.
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