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:
Jan. 14, 1997
Filed:
Sep. 16, 1994
Yukihiro Nomura, Kawasaki, JP;
Yasuharu Satoh, Kawasaki, JP;
Yoshihiro Takemae, Kawasaki, JP;
Takaaki Furuyama, Kasugai, JP;
Mitsuhiro Nagao, Kasugai, JP;
Masahiro Niimi, Kasugai, JP;
Fujitsu Limited, Kawasaki, JP;
Fujitsu Vlsi Limited, Kasugai, JP;
Abstract
A DRAM (Dynamic Random Access Memory) having a plurality of memory cells includes a data read/write circuit reading or writing data for the memory cells, a self-refresh circuit refreshing data stored in the memory cells, and a power supply unit for supplying electric power to the data read/write circuit and the self-refresh circuit, the electric power having a first voltage level in a normal operation mode and a second voltage level in a self-refresh mode, wherein the second voltage level is lower than the first voltage level.