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:
Apr. 24, 2012
Filed:
Aug. 31, 2010
Shingo Mitsubori, Tokyo, JP;
Kazutaka Miyano, Tokyo, JP;
Shingo Mitsubori, Tokyo, JP;
Kazutaka Miyano, Tokyo, JP;
Elpida Memory, Inc., Tokyo, JP;
Abstract
To include a first level shift circuit that converts a first internal clock signal having an amplitude value of a first voltage into a second internal clock signal having an amplitude value of a second voltage, a second level shift circuit that converts a first internal data signal having the amplitude value of the first voltage into a second internal data signal having the amplitude value of the second voltage, a clock dividing circuit that generates third and fourth internal clock signals, which are complementary signals, based on the second internal clock signal, and an output circuit that outputs external data signals continuously from a data output terminal in synchronization with the third and fourth internal clock signals based on the second internal data signal. According to the present invention, because a level shift of a signal is performed before it is input to the output circuit, there occurs no skew in output data.