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. 04, 1990
Filed:
Jul. 01, 1988
Applicant:
Inventors:
Masaya Yamaguchi, Tokyo, JP;
Takamasa Suzuki, Tokyo, JP;
Assignee:
NEC Corporation, , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365226 ; 365229 ; 365227 ; 36523003 ; 307 64 ;
Abstract
A semiconductor integrated circuit has a logic circuit block, a RAM memory block having an input stage of logical gates and energized independently from the logic circuit block, and a detection circuit for detecting a deenergization of the logic circuit block. The logical gates in the input stage are controlled to produce fixed output signals having a logical high or low level.