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:
Aug. 22, 2000
Filed:
Jan. 11, 1999
Applicant:
Inventors:
Isamu Hayashi, Hyogo, JP;
Akira Yamazaki, Hyogo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365194 ; 365226 ; 36518905 ;
Abstract
An output buffer receives a voltage from a first power supply pin receiving an external power supply voltage for operation. Delay circuits included in an array control circuit, a read control circuit, a write control circuit and an internal clock generation circuit receive a voltage from a second power supply pin receiving the external power supply voltage for operation. Thus, a timing control is accurately performed for reading/writing a data signal without being affected by the change in power supply voltage due to an operation of the output buffer.