Nonvolatile semiconductor memory device with redundancy circuit
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 12, 1994
Grant Date -
N/A
app pub date -
Dec 3, 1992
filing date -
Dec 27, 1991
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A nonvolatile semiconductor memory device for use as a flash EEPROM includes a plurality of sectors each comprising a plurality of main memory cell regions each composed of a matrix of nonvolatile memory cells and at least one redundant memory cell region composed of a matrix of nonvolatile memory cells. When one of said nonvolatile memory cells in any one of the sectors is found defective and is selected by addressing, it is replaced with one of the nonvolatile memory cells in the redundant memory cell region.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully