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:
Jul. 01, 2014
Filed:
Oct. 10, 2012
Elpida Memory, Inc., Tokyo, JP;
Other;
Abstract
The semiconductor device comprises an output circuit that includes a plurality of unit buffer circuits each of which has an adjustable impedance, a control circuit that selectively activates one or ones of the unit buffer circuits, and an impedance adjustment unit that adjusts the impedances of the unit buffer circuits and includes a power line, a replica circuit, which has a replica impedance that is substantially equal to the adjustable impedance of each of the unit buffer circuits, and a load current generation circuit, which changes current flowing therethrough in accordance with the number of activated the one or ones of the unit buffer circuits. The replica circuit and the load current generation circuit are connected in common to the power line.