Redundant random access memory device equipped with encoder coup

Details Redundant random access memory device equipped with encoder coup Redundant random access memory device equipped with encoder coup

1992-01-21

1993-06-29

Fears, Terrell W.

Static information storage and retrieval

Read/write circuit

Bad bit

365 49, G11C 1300

Patent

active

052240738

ABSTRACT:
A redundant technology is applied to a semiconductor memory device for rescuing from defect, and comprises a plurality of programming circuits for storing row addresses assigned to defective word lines replaced with redundant word lines, wherein the programming circuits monitor decoded row address signals to see whether or not one of the defective word lines is designated with an external row address signal for supplying enable signals and prohibiting signals to word line driving circuits and redundant word line driving circuits upon matching therebetween, and the enable signals and prohibiting signals are encoded so that the number of signal lines is decreased, thereby making design work easy.

REFERENCES:
patent: 5146429 (1992-09-01), Kawai et al.

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