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:
Feb. 08, 2005
Filed:
Nov. 15, 2001
Applicants:
Mitsuya Kinoshita, Hyogo, JP;
Katsumi Dosaka, Hyogo, JP;
Inventors:
Mitsuya Kinoshita, Hyogo, JP;
Katsumi Dosaka, Hyogo, JP;
Assignee:
Renesas Technology Corp., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C029/00 ;
U.S. Cl.
CPC ...
Abstract
Internal read out data bits are divided into a plurality of data groups, and data bits in corresponding positions in different data groups are paired off. A determination gate is provided to each pair of data bits, and determining operation is performed in each pair to compress the result of determination to finally generate a 1-bit flag indicating a match/mismatch in logic level among the internal read out data. Consequently, a multi-bit test circuit that has a reduced layout area and can perform high-speed multi-bit determination is provided.