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:
Mar. 25, 2014
Filed:
Apr. 24, 2012
Applicants:
Daisuke Miura, Yokohama, JP;
Shinji Oyamada, Yokohama, JP;
Inventors:
Daisuke Miura, Yokohama, JP;
Shinji Oyamada, Yokohama, JP;
Assignee:
Fujitsu Semiconductor Limited, Yokohama, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 31/3177 (2006.01); G01R 31/40 (2006.01);
U.S. Cl.
CPC ...
Abstract
A semiconductor device, comprising: a user circuit having a plurality of flip-flops; and a connection path which, while in test mode, connects the plurality of flip-flops and forms a scan chain, wherein the connection path has a logic operation circuit which performs a logic operation on a non-inverted output value of any flip-flop among the plurality of flip-flops and outputs the result, or, an inverted value connection path which outputs to a following-stage flip-flop an inverted output value of any flip-flop among the plurality of flip-flops.