Apparatuses and methods for refreshing memory cells of a semiconductor device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 29, 2018
Issued Date -
N/A
app pub date -
Apr 27, 2017
filing date -
Jul 31, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Apparatuses and methods for refreshing memory cells of semiconductor device are described. An example apparatus includes: a memory cell array including a plurality of memory groups each having a plurality of memory cells, the memory groups being selected by mutually different addresses; a first control circuit periodically executing a refresh operation on the memory groups in response to a first refresh command; and a second control circuit setting a cycle of executing the refresh operation by the first control circuit. The second control circuit sets the cycle to a first cycle until executing the refresh operation to all the memory groups after receiving the first refresh command, and the second control circuit sets the cycle to a second cycle that is longer than the first cycle after executing the refresh operation to all the memory groups.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
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