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:
Nov. 25, 2003
Filed:
Aug. 13, 2002
Applicant:
Inventor:
Yutaka Ikeda, Hyogo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 7/00 ;
U.S. Cl.
CPC ...
G11C 7/00 ;
Abstract
A semiconductor memory device includes an internal voltage generation circuit controlling an internal voltage supplied to an internal circuit in accordance with a reference voltage, a reference voltage generation circuit generating the reference voltage, a plurality of signal terminals for transmitting and receiving a signal to and from an outside of the semiconductor memory device, and a reference voltage change indication circuit for indicating a change of the reference voltage on the basis of a binary input signal to each of the signal terminals with respect to the reference voltage generation circuit during a test.