Static information storage and retrieval – Read/write circuit – Bad bit
Reexamination Certificate
2005-07-19
2005-07-19
Tran, Michael (Department: 2827)
Static information storage and retrieval
Read/write circuit
Bad bit
C365S129000
Reexamination Certificate
active
06920073
ABSTRACT:
A row redundancy circuit comprises a fuse box group array, a redundant row predecoder and a redundant sub-row decoder. The fuse box group array which comprises a plurality of fuse box groups detects whether repaired row addresses are applied. Each fuse box group consists of at least two or more fuse boxes to detect row addresses. The redundant row predecoder performs a logic operation on an output signal from each fuse box group to selectively activate redundant main wordlines each of which correspondings to a plurality of redundant sub-wordlines. The redundant sub-row decoder performs a logic operation on output signals from the fuse box groups, which are classified into group signals corresponding to the number of fuse boxes in each fuse box group, to output a boosting signal for selectively activating the plurality of sub-wordlines corresponding to the each redundant main wordline. In the row redundancy circuit, the space for redundant main wordlines can be effectively utilized because 8 redundant sub-wordlines are controlled by one redundant main wordline.
REFERENCES:
patent: 5737511 (1998-04-01), Chang
patent: 5798973 (1998-08-01), Isa
patent: 5862086 (1999-01-01), Makimura et al.
patent: 6011735 (2000-01-01), Ooishi et al.
patent: 2001-65069 (2001-07-01), None
patent: 2003-22611 (2003-03-01), None
Heller Ehrman LLP
Hynix / Semiconductor Inc.
Tran Michael
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