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:
Sep. 28, 1999
Filed:
Nov. 03, 1998
Applicant:
Inventor:
Takashi Tatsumi, Tokyo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365222 ; 36518905 ; 36523006 ; 36523008 ; 365236 ;
Abstract
A DRAM and a system LSI incorporating the DRAM. The DRAM has a self refresh address control section (11) inputs a control signal to optionally specify a period of a self refresh operation for the DRAM, a self refresh control circuit (7,71) for specifying the period of an address signal to be used for the self refresh operation and for outputting a self cycle signal, and a row address buffer (8) for providing addresses to the memory cell array (10) based on the self cycle signal as a trigger signal.