Refresh scheme for redundant word lines

Details Refresh scheme for redundant word lines Refresh scheme for redundant word lines

1998-12-10

2000-06-20

Nelms, David

Static information storage and retrieval

Addressing

Plural blocks or banks

365222, 36523006, G11C 800

Patent

active

060785438

ABSTRACT:
A memory device and method are provided that permits repair a predetermined normal word line by a redundant word line in an identical bank, for example, in a multi-bank device. Each bank of the memory device includes a single memory block of a plurality of memory blocks having redundant word lines. A refresh operation can be performed in each banks by simultaneously driving normal word lines and the redundant word lines when each the memory blocks are accessed with the exception of the single memory block including the redundant word lines.

REFERENCES:
patent: 5426603 (1995-06-01), Nakamura et al.
patent: 5463557 (1995-10-01), Nakano et al.
patent: 5469559 (1995-11-01), Parks et al.
patent: 5528552 (1996-06-01), Kamisaki

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