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. 14, 2023
Filed:
Sep. 16, 2020
Applicant:
Taiwan Semiconductor Manufacturing Co., Ltd., Hsinchu, TW;
Inventors:
Assignee:
TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD., Hsinchu, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 31/28 (2006.01);
U.S. Cl.
CPC ...
G01R 31/2896 (2013.01); G01R 31/2834 (2013.01);
Abstract
A method is provided in the present disclosure. The method includes several operations: generating, by a processing unit, a mapping table associated with multiple scan chains and multiple shift cycles corresponding to multiple values stored in the scan chains in an integrated circuit; determining, based on the mapping table, at least one fail flip flop in the scan chains in response to the values outputted from the scan chains; and identifying at least one fault site corresponding to the at least one fail flip flop.