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. 01, 2022
Filed:
Mar. 26, 2020
Applicant:
Rohm Co., Ltd., Kyoto, JP;
Inventor:
Hiromitsu Kimura, Kyoto, JP;
Assignee:
ROHM CO., LTD., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/3185 (2006.01); G01R 31/3183 (2006.01);
U.S. Cl.
CPC ...
G01R 31/318552 (2013.01); G01R 31/318371 (2013.01); G01R 31/318536 (2013.01); G01R 31/318541 (2013.01);
Abstract
Disclosed is a semiconductor integrated circuit including a logic circuit, and a plurality of scan flip-flop circuits that hold input data or output data of the logic circuit and are capable of forming a scan chain for executing a scan test of the logic circuit. Each scan flip-flop circuit includes a scan data input part that receives input of scan data for the scan test, a normal data input part that receives input of normal data different from the scan data, and a data holding part capable of separately holding the normal data and the scan data.