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. 15, 1992
Filed:
Oct. 16, 1990
Applicant:
Inventor:
Hidenobu Gochi, Itami, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365226 ; 365227 ;
Abstract
A portable semiconductor memory unit comprises a semiconductor memory requiring different voltages for reading and writing. A single supply voltage is supplied to the portable semiconductor memory unit from an external terminal equipment and transformed by a transforming circuit provided in the portable semiconductor memory unit with necessity to be applied to the semiconductor memory. Thus, the terminal equipment does not need to be installed with a dedicated voltage supply circuit for generating different level voltages.