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:
Feb. 22, 1994
Filed:
Aug. 25, 1992
Nobuhiko Ito, Tenri, JP;
Makoto Ihara, Sakurai, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
In a pseudo-static random access memory of the invention, refresh operations are conducted in a normal mode and a self-refresh mode. The memory includes a plurality of bit-line pairs each having two bit lines, a precharge voltage generating circuit for precharging the plurality of bit-line pairs to a first potential level during a precharge period in the normal mode, the circuit being electrically connected to the plurality of bit-line pairs during the precharge period in the normal mode; and bit line discharge circuit for discharging the bit-line pairs during a precharge period in the self-refresh mode, thereby decreasing the potential level of the bit-line pairs to a second potential level which is below the first potential level.