Duty detection circuit, DLL circuit using the same, semiconductor memory circuit, and data processing system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 18, 2010
Grant Date -
Jan 15, 2009
app pub date -
Jul 10, 2008
filing date -
Jul 10, 2007
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A duty detection circuit includes discharge transistors, charge transistors, detection lines, and a comparator circuit that detects a potential difference of these detection lines, and also includes a gate circuit that controls the discharge transistors and the charge transistors in response to the internal clock signal of an even cycle. As a result, the detection lines are charged and discharged in response to the internal clock signal of the even cycle. Consequently, the duty detection circuit can be applied to a multi-phase DLL circuit, and a potential difference appearing in the detection line can be sufficiently secured.
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