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:
Jun. 06, 2000
Filed:
Apr. 06, 1999
Applicant:
Inventor:
Nobuyuki Kokubo, Hyogo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365203 ; 36523003 ;
Abstract
A semiconductor memory device of the present invention includes a data bus and an I/O line which are hierarchically provided data lines. In accordance with a column selection operation, storage data in a memory cell is transmitted from the I/O line through a data bus driver to the data bus. Prior to the column selection operation, the data bus is equalized by an equalization circuit. The equalization circuit includes an equalization capacitor for holding in advance a potential corresponding to an inverted state of the data bus, and a transistor gate for connecting the equalization capacitor and the data bus.