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. 26, 1999
Filed:
Apr. 15, 1998
Applicant:
Inventor:
Mikio Sakurai, Hyogo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365233 ; 365194 ; 36523003 ; 36523006 ;
Abstract
An act signal generation circuit in a synchronous semiconductor memory device includes an act command latch circuit, an act command output circuit, and an act command control circuit. The act command latch circuit latches externally applied active command information. The act command output circuit responds to an enable signal to output an act initiation signal that renders a bank active. The act command control circuit responds to level transition of an external control signal in a test mode to alter the level of the enable signal. As a result, the active command information can be delayed and then transmitted to a bank.