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:
Jun. 16, 2009
Filed:
Aug. 24, 2006
Kuninori Kawabata, Kawasaki, JP;
Shuzo Otsuka, Kawasaki, JP;
Kuninori Kawabata, Kawasaki, JP;
Shuzo Otsuka, Kawasaki, JP;
Fujitsu Microelectronics Limited, Tokyo, JP;
Abstract
A bit line resetting signal is supplied to the gate of an nMOS transistor (or a precharge circuit) which connects a bit line with a precharge voltage line. The high-level voltage of the bit line resetting signal is retained at a first voltage during the precharge operation after a refresh operation, and is retained at a second voltage higher than the first voltage during the precharge operation after an access operation. In the precharge operation after the refresh operation, therefore, the second voltage is not used so that the current consumption of the generating circuit of the second voltage is reduced. Thus, it is possible to reduce the current consumption (or the standby current) during the standby period for which the internal refresh requests continuously occur.