Redundancy circuit for use in a semiconductor memory device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 27, 1988
Grant Date -
N/A
app pub date -
May 1, 1987
filing date -
May 7, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A normal decoder and a redundant decoder having address program devices are used for the replacement of bad cells. The number of address program devices is one more than the number of input address bits for selecting a normal row or column. The input signals of the additional program device are complementary to the input signals of one of the other program devices. The program of the program devices have two steps to repair the faulty cells. To increase the reliability of redundancy, a nonvolatile memory element used in the program devices is a bridge connected four cell FLOTOX type nonvolatile memory device.
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