Semiconductor memory device with optimum refresh cycle according to temperature variation
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 27, 2013
Grant Date -
Nov 24, 2011
app pub date -
Aug 2, 2011
filing date -
Dec 29, 2003
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Methods for generating a refresh signal in a semiconductor device and methods for performing a refresh operation in a semiconductor memory device are disclosed. A method for generating a refresh signal includes measuring a temperature of the semiconductor memory device, generating a temperature controlled voltage based on the measured temperature, generating an N-bit digital signal based on the temperature controlled voltage, and generating a refresh signal whose frequency is determined by the N-bit digital signal. The generation of the temperature controlled voltage includes generating a first current that is increased when the measured temperature is decreased and is decreased with the measured temperature is increased, and generating the temperature controlled voltage.
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