- 专利标题: Apparatus and method for repairing a semiconductor memory
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申请号: US11714979申请日: 2007-03-07
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公开(公告)号: US20070153595A1公开(公告)日: 2007-07-05
- 发明人: Chris Martin , Troy Manning , Brent Keeth
- 申请人: Chris Martin , Troy Manning , Brent Keeth
- 主分类号: G11C29/00
- IPC分类号: G11C29/00
摘要:
An apparatus and method for repairing a semiconductor memory device includes a first memory cell array, a first redundant cell array and a repair circuit configured to nonvolatilely store a first address designating at least one defective memory cell in the first memory cell array. A first volatile cache stores a first cached address corresponding to the first address designating the at least one defective memory cell. The repair circuit distributes the first address designating the at least one defective memory cell of the first memory cell array to the first volatile cache. Match circuitry substitutes at least one redundant memory cell from the first redundant cell array for the at least one defective memory cell in the first memory cell array when a first memory access corresponds to the first cached address.
公开/授权文献
- US07408825B2 Apparatus and method for repairing a semiconductor memory 公开/授权日:2008-08-05
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