Use of redundant memory cells to manufacture cost efficient...

Details Use of redundant memory cells to manufacture cost efficient... Use of redundant memory cells to manufacture cost efficient...

2005-01-25

2005-01-25

Hoang, Huan (Department: 2818)

Static information storage and retrieval

Read/write circuit

Data refresh

C365S200000

Reexamination Certificate

active

06847571

ABSTRACT:
A redundant sense amplifier is provided together with a corresponding bit line, which is connected to all word lines in the memory array. This redundant bit line and corresponding redundant memory cells are used to store information which control the refresh of each word line on an individual basis. This way, only a memory cell which is being used needs to be refreshed, thereby saving power.

REFERENCES:
patent: 6366516 (2002-04-01), Lippincott
patent: 6654303 (2003-11-01), Miyamoto et al.

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