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. 21, 1993
Filed:
Oct. 09, 1992
Ryuji Yamamura, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A dynamic random access memory device includes a plurality of memory cell plates each having memory cells and a sense amplifier circuit array selectively coupled with the memory cells, and the sense amplifier circuit array selectively enters a standby mode and amplifying mode depending upon first and second driving signals supplied thereto, wherein the first and second driving signals are regulated to an intermediate voltage level between a step-down power voltage level and a ground voltage level in the standby mode with a main step-down power voltage signal supplied from a main step-down circuit; however, the first and second driving signals are changed to the step-down voltage level and the ground voltage level with an auxiliary step-down power voltage signal produced from an external power voltage signal at an auxiliary step-down circuit exclusively associated therewith so that undesirable voltage fluctuation hardly takes place on a main step-down power voltage line.