Semiconductor memory device

Details Semiconductor memory device Semiconductor memory device

2007-06-19

2007-06-19

Mai, Son L. (Department: 2827)

Static information storage and retrieval

Read/write circuit

Bad bit

C365S189070, C365S194000

Reexamination Certificate

active

11315698

ABSTRACT:
A redundancy replacement judging circuit includes a redundancy replacement judging circuit chain and a pseudo redundancy replacement judging circuit chain substantially equal in delay time to the redundancy replacement judging circuit chain. In response to an output of the pseudo redundancy replacement judging circuit chain, the redundancy replacement judging circuit outputs a redundancy judgment result of the redundancy replacement judging circuit chain. A semiconductor memory device includes the redundancy replacement judging circuit.

REFERENCES:
patent: 6490210 (2002-12-01), Takase et al.
patent: 7099208 (2006-08-01), Okuyama et al.
patent: 2001035187 (2001-02-01), None
patent: 2002042486 (2002-02-01), None
patent: 2004013985 (2004-01-01), None
patent: 2004178674 (2004-06-01), None

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