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:
Feb. 19, 1985
Filed:
Sep. 29, 1982
Applicant:
Inventor:
Akira Nagami, Tokyo, JP;
Assignee:
Nippon Electric Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365222 ; 365210 ;
Abstract
A memory circuit capable of detecting that refresh operation is surely ended is disclosed. The memory circuit comprises a memory cell matrix, a dummy array sharing rows with the memory cell matrix and similar column structure to the memory cell matrix, and means coupled to a pair of digit lines of the dummy array for detecting that a potential at either of the pair of digit lines in the dummy array reaches an amplified low level.