Static information storage and retrieval – Read/write circuit – Having fuse element
Patent
1999-11-29
2000-10-10
Tran, Andrew Q.
Static information storage and retrieval
Read/write circuit
Having fuse element
365200, 365201, 36523002, 36523008, 36518902, 36518909, G11C 700
Patent
active
06130851&
ABSTRACT:
An object of the present invention is to provide a semiconductor memory device capable of shortening the time required to complete all the tests without shifting a sample between processes for first and second probing tests. The semiconductor memory device according to the present invention comprises a redundant fuse provided between a source potential and a ground potential and composed of a material cut by the flow of a high current therethrough, a detector circuit which is electrically connected to a node provided on one electrode side of the redundant fuse and outputs a signal in response to a potential applied to the node, a selector circuit for selectively transferring input data to either of a normally-used memory cell and a redundant memory cell, a control circuit for controlling an electrical connection between the source potential and the redundant fuse, and voltage applying pads electrically connected to both ends of the redundant fuse.
REFERENCES:
patent: 5661323 (1997-08-01), Choi et al.
patent: 5844296 (1998-12-01), Murray et al.
patent: 5929691 (1999-07-01), Kim et al.
OKI Electric Industry Co., Ltd.
Tran Andrew Q.
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