发明授权
- 专利标题: Memory with minimized redundancy access delay
- 专利标题(中): 具有最小冗余访问延迟的内存
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申请号: US111164申请日: 1993-08-24
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公开(公告)号: US5381370A公开(公告)日: 1995-01-10
- 发明人: Timothy M. Lacey , Christopher S. Norris
- 申请人: Timothy M. Lacey , Christopher S. Norris
- 申请人地址: CA San Jose
- 专利权人: Cypress Semiconductor Corporation
- 当前专利权人: Cypress Semiconductor Corporation
- 当前专利权人地址: CA San Jose
- 主分类号: G11C29/00
- IPC分类号: G11C29/00 ; G11C7/00 ; G11C8/00
摘要:
A memory is described that includes a main memory array having a plurality of main memory locations and a redundant memory array having a plurality of redundant memory locations. A main decoding circuit is coupled to the main memory array for decoding an address received from an external circuit to access a selected one of the plurality of main memory locations. A storage circuit is provided for pre-storing the address of the selected one of the plurality of main memory locations when the selected one of the plurality of main memory locations is defective. A redundant comparison circuit is coupled to the redundant memory array and the storage circuit for comparing the external address with the address stored in the storage circuit in order to access a selected one of the plurality of redundant memory locations. A static decoding circuit is coupled to the storage circuit and the main select circuit for decoding the address received from the storage circuit and for disabling the main select circuit from accessing the selected one of the plurality of main memory locations such that when the redundant comparison circuit accesses the selected one of the plurality of redundant memory locations, the main select circuit has already been disabled from accessing the selected one of the plurality of main memory locations.
公开/授权文献
- USD311763S Iron golf club head 公开/授权日:1990-10-30
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