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:
Oct. 21, 1997
Filed:
Apr. 15, 1996
Applicant:
Inventors:
Katsumi Dosaka, Hyogo, JP;
Masaki Kumanoya, Hyogo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
36523003 ; 365 49 ; 36523005 ;
Abstract
In an operation of transferring data between a DRAM array and an SRAM array through a bidirectional transfer gate circuit, data blocks on a selected one in the DRAM array are sequentially selected in a high speed mode, word lines are sequentially selected in the SRAM array, so that data is transferred in a time division multiplexing manner between the DRAM array and the SRAM array in units of data block. A cache block size in a semiconductor memory device containing a cache can be externally changed depending on the application with the internal configuration maintained unchangedly.