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:
May. 25, 2010
Filed:
Feb. 05, 2007
Applicant:
Atsunori Hirobe, Tokyo, JP;
Inventor:
Atsunori Hirobe, Tokyo, JP;
Assignee:
Elpida Memory, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A write amplifier power generating circuit includes a control unit for changing an output voltage. In a first write cycle in which a pair of bit lines are being amplified, a write operation is performed by an overdrive write method in which a high level from a write amplifier is set to a first voltage (for example, a power supply voltage). In a second write cycle after amplification in the pair of the bit lines has been completed, a write operation is performed by a write method in which the high level from the write amplifier is set to a second voltage (for example, an internal voltage).