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.

Date of Patent:
Apr. 19, 2016

Filed:

Mar. 14, 2011
Applicants:

Yasuo Sato, Iizuka, JP;

Seiji Kajihara, Iizuka, JP;

Michiko Inoue, Ikoma, JP;

Tomokazu Yoneda, Ikoma, JP;

Hyunbean Yi, Ikoma, JP;

Yukiya Miura, Hino, JP;

Inventors:

Yasuo Sato, Iizuka, JP;

Seiji Kajihara, Iizuka, JP;

Michiko Inoue, Ikoma, JP;

Tomokazu Yoneda, Ikoma, JP;

Hyunbean Yi, Ikoma, JP;

Yukiya Miura, Hino, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 31/28 (2006.01); G01R 31/30 (2006.01);
U.S. Cl.
CPC ...
G01R 31/2884 (2013.01); G01R 31/3016 (2013.01);
Abstract

A semiconductor device and the like that can determine the performance of a semiconductor integrated circuit with higher accuracy even when test environment fluctuates. The semiconductor device detects degradation of the semiconductor integrated circuit, including measurement unit that measures temperature and voltage, decision unit that judges whether the test is executed within an allowable test timing in the detection target circuit portion at each test operation frequency and decides a maximum test operation frequency and calculation unit that converts a maximum test operation frequency into that at a standard temperature and voltage and calculates a degradation amount. The semiconductor integrated circuit has a monitor block circuit that monitors the values for the measurement unit to measure temperature and voltage. The measurement unit has estimation unit that estimates temperature and voltage of a detection target circuit portion based on the monitored values. The calculation unit uses the estimated temperature and voltage.


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