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. 19, 2000
Filed:
Dec. 14, 1999
Applicant:
Inventor:
Azuma Suzuki, Tokyo, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kanagawa-ken, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
36523006 ; 36518905 ;
Abstract
A semiconductor device is equipped with an improved programmable impedance output buffer driver which makes it possible to adjust the impedance of the output buffer of the semiconductor device to the impedance of the bus lines of the system bus in a normal operation mode and to adjust the impedance of the output buffer of the semiconductor device to a predetermined fixed impedance in a test mode. It is therefore possible to effectively and accurately conduct tests of the semiconductor device.