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:
Oct. 19, 2004
Filed:
Oct. 09, 2002
Applicant:
Inventors:
Yukiko Maruyama, Hyogo, JP;
Takashi Itou, Hyogo, JP;
Assignee:
Renesas Technology Corp., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 1/134 ;
U.S. Cl.
CPC ...
G11C 1/134 ;
Abstract
An input buffer circuit includes a first input buffer and a second input buffer. The first input buffer receives an external data signal and a reference potential to output an internal data signal. The second input buffer receives external data signals complementary to each other to output the internal data signal. The input buffer circuit causes either the first or second input buffer to operate in response to a control signal outputted from a control circuit. Due to this, this semiconductor memory device can correspond to various types of data processing systems.