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:
Jun. 01, 2004
Filed:
Feb. 07, 2001
Kazutami Arimoto, Hyogo, JP;
Hiroki Shimano, Hyogo, JP;
Reneses Technology Corp., Tokyo, JP;
Abstract
A self refresh timer is set constantly to an operation state to render a refresh request signal FAY active periodically. When contention occurs between the refresh request signal FAY and an externally applied read or write command, a row selection related circuit/command generation related circuit controls a row related control signal so that a refresh operation is carried out after, for example, the read or write operation ends. A submemory array SMA is divided more small than that of the conventional case, and the refresh cycle ends in a shorter period of time. Therefore, a read operation and a refresh operation can be completed within a read cycle time. A DRAM core that can be employed with control as simple as that of an SRAM can be realized.