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.

Date of Patent:
Aug. 29, 1989

Filed:

Apr. 04, 1988
Applicant:
Inventors:

Masashi Hashimoto, Miho, JP;

Tadashi Tachibana, Miho, JP;

Assignee:
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365104 ; 365226 ; 36518909 ;
Abstract

A memory device including a voltage stepdown circuit is proposed in which a reduced reference voltage is produced from a supplied reference voltage and is passed to the selected one of the row lines of the memory array after all the row lines are discharged to ground potential, while the supplied reference voltage is fed directly, viz., without reduction, to all the control circuits of the device. The voltage stepdown circuit provided in the memory device is thus relieved from the burden to supply current to the control circuits and has only to feed the selected one of the row lines so that the field-effect transistors forming the voltage stepdown circuit can be fabricated to have channel regions with significantly reduced widths.


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