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, 1993
Filed:
Aug. 22, 1991
Applicant:
Inventor:
Hajime Masuda, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C / ; G11C / ;
U.S. Cl.
CPC ...
365201 ; 371 211 ;
Abstract
A semicustom-made integrated circuit with built-in memory unit is equipped with an internal timing generator located in the vicinity of the memory unit and responsive to two external controlling signals for producing an internal write enable signal used in a testing mode of operation, and the waveform of the internal write enable signal is hardly deformed on the way to the memory unit even if the signal propagation paths for the external controlling signals are prolonged due to increase of integration density, thereby enhancing the reliability of the testing operation.