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:
Dec. 17, 2002
Filed:
Jan. 09, 2001
Applicant:
Inventors:
Assignee:
Fujitsu Limited, Kawasaki, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C 7/00 ;
U.S. Cl.
CPC ...
G11C 7/00 ;
Abstract
A semiconductor device has a normal mode and a test mode for testing the semiconductor device, and is provided with a first circuit which receives an input signal, a test signal and an output enable signal, and outputs the input signal in response to the output enable signal, a second circuit which is coupled to the first circuit and outputs the input signal obtained from the first circuit, and power supply pads which receive a power supply voltage which is supplied in common to the first circuit and the second circuit. The first circuit fixes an output impedance of the second circuit to a high-impedance regardless of the output enable signal when the test signal indicates the test mode.