Semiconductor memory device

Details Semiconductor memory device Semiconductor memory device

1998-05-26

1999-10-19

Le, Vu A.

Static information storage and retrieval

Read/write circuit

Bad bit

36523003, 3652257, G11C 700

Patent

active

059700033

ABSTRACT:
A semiconductor memory device comprising at least one memory mat comprised of a plurality of memory cells respectively provided at points where a plurality of word lines and spare word lines respectively intersect a plurality of bit lines and spare bit lines placed so as to intersect the word lines and spare word lines. In the semiconductor memory device, a plurality of fuse means allowed to open or remain unopen in accordance with stored information encoded with respect to addresses for specifying defective word lines or defective bit lines are used to control gate means based on their corresponding complementary signals. Thus, the gate means transmit signals for selecting their corresponding word lines or bit lines to thereby produce coincidence
on-coincidence signals.

REFERENCES:
patent: 5532966 (1996-07-01), Poteet et al.
patent: 5652725 (1997-07-01), Suma et al.
patent: 5691952 (1997-11-01), Sasaki et al.

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