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:
Apr. 07, 1998
Filed:
Nov. 16, 1995
Applicant:
Inventor:
Makoto Suwa, Hyogo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05F / ;
U.S. Cl.
CPC ...
327538 ; 327530 ; 327540 ;
Abstract
In a level generating circuit 1 included in an internal power supply circuit of a DRAM, MOS transistors 14 and 16 for inactivating a V.sub.1 generating circuit 3, and MOS transistors 23 and 25 for inactivating a V.sub.2 generating circuit 5 are provided. When V.sub.1 is to be adjusted, V.sub.2 generating circuit 5 is inactivated, and when V.sub.2 is to be adjusted, V.sub.1 generating circuit 3 is inactivated. Therefore, failure of adjustment of internal power supply potential intVcc caused by confusion of V.sub.1 and V.sub.2 can be prevented.