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:
Mar. 16, 2004

Filed:

May. 12, 2000
Applicant:
Inventors:

Mari Shibayama, Tokyo, JP;

Ryuji Ohmura, Tokyo, JP;

Yukiyoshi Koda, Tokyo, JP;

Kazushi Sugiura, Hyogo, JP;

Assignee:

Other;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 3/128 ;
U.S. Cl.
CPC ...
G01R 3/128 ;
Abstract

A semiconductor module that comprises a plurality of semiconductor chips mounted on a single substrate and which readily diagnoses all the semiconductor chips. A plurality of semiconductor chips are mounted on a single substrate. The semiconductor module is provided with a mode signal pin for receiving a mode signal for requesting performance of a diagnostic operation, as well as with a result output pin for outputting diagnostic results. Further, each of the semiconductor chips is provided with a diagnostic circuit for diagnosing the status of the corresponding semiconductor chip. The semiconductor module is also provided with a diagnosis controller for controlling the diagnostic circuits such that all the semiconductor chips are diagnosed in parallel or serially after a mode signal for requesting a diagnostic operation has been supplied to the mode signal pin.


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