The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 30, 2002
Filed:
Jul. 19, 2001
Applicant:
Inventors:
Yukiko Maruyama, Hyogo, JP;
Seiji Sawada, Hyogo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 7/00 ;
U.S. Cl.
CPC ...
G11C 7/00 ;
Abstract
A DLL circuit generates a control clock specifying an operating timing of a data output buffer according to an external clock. The DLL circuit includes a replica delay time adjusting section and a phase control section. The phase control section controls such that a feedback clock and the external clock becomes in phase. The replica delay time adjusting section adjusts a delay time of the feedback clock behind the control clock according to an operating condition serving as a factor for changing a processing time of the data output buffer.