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:
Dec. 27, 1994
Filed:
Apr. 13, 1993
Applicant:
Inventors:
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
36518901 ; 365149 ; 36523006 ;
Abstract
A DRAM having a data preset function is disclosed. A memory cell includes connectors which are formed of contact holes or through holes and which can be selectively formed in order to program preset data. For example, when preset data '0' is programmed, connectors are formed, and connector 17 is not formed. When a data precharge signal of a high level is applied, a transistor is turned on and as a result, a data storage capacitor is discharged. In other words, predetermined data is written into capacitor. Thus, the DRAM having the data preset function is provided.