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:
May. 09, 2006
Filed:
May. 26, 2004
Yoshiharu Kato, Kasugai, JP;
Gen Tsukishiro, Kasugai, JP;
Yoshihiro Takemae, Kasugai, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
It is intended to provide a memory control device and memory control method capable of reducing charge/discharge current consumed while various commands are inputted to a semiconductor memory device and reducing occurrence of power noises. During periods TT, TT, and TTwhich are parts of a period tCKE in which a clock enable signal CKE is in active state, supply of a control clock SD_CLK from a memory control deviceto a synchronous-type semiconductor memory devicecan be stopped. Furthermore, in case an input of a data input/output period of an external command and that of refresh operation period of a refresh command RCMD overlap and an access region of the external command and that of the refresh command RCMD do not coincide, those commands are converted to control command signal SD_CMD in parallel, whereby parallel conversion processing operation can be conducted.