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:
Jun. 14, 2016
Filed:
Jun. 16, 2014
Applicant:
Lapis Semiconductor Co., Ltd., Yokohama, JP;
Inventor:
Masayuki Otsuka, Yokohama, JP;
Assignee:
LAPIS SEMICONDUCTOR CO., LTD., Yokohama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/02 (2006.01); G11C 17/18 (2006.01); G11C 29/02 (2006.01); G01R 31/28 (2006.01);
U.S. Cl.
CPC ...
G11C 17/18 (2013.01); G01R 31/2856 (2013.01); G11C 29/027 (2013.01); G01R 31/2853 (2013.01);
Abstract
A test voltage having a first voltage or a second voltage is applied to an output terminal of a complementary fuse that includes a first fuse to one end of which the first voltage is applied and the other end of which serves as the output terminal and a second fuse to one end of which the second voltage is applied and the other end of which is connected to the output terminal. The test voltage then stops being applied. In such a state, whether output data from the output terminal of the complementary fuse coincides with an expected value is determined. The result of determination is output as a test result.