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:
Mar. 25, 2014
Filed:
Sep. 19, 2011
Satoshi Ota, Yokohama, JP;
Satoshi Ota, Yokohama, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A semiconductor device controls read-out operation of a semiconductor memory that outputs a parallel data signal and a strobe signal at a timing in synchronism with each other. The semiconductor device has a first phase control circuit configured to output a delay strobe signal which delays the strobe signal for a variable delay time, a second phase control circuit configured to output a re-delay strobe signal which delays the delay strobe signal for a variable delay time, a first hold circuit configured to hold the parallel data signal at an edge of the delay strobe signal, a second hold circuit configured to hold the parallel data signal at an edge of the re-delay strobe signal, and a control circuit configured to adjust a delay time of the first phase control circuit so that the second hold circuit performs a hold operation at a signal transition timing of the parallel data signal.