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. 27, 2009
Filed:
Jul. 13, 2007
Applicants:
Chieh Fang Chen, Panchiao, TW;
Yi-chou Chen, Cupertino, CA (US);
Inventors:
Chieh Fang Chen, Panchiao, TW;
Yi-Chou Chen, Cupertino, CA (US);
Assignee:
Macronix International Co., Ltd., Hsinchu, TW;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G11C 7/00 (2006.01); G11C 11/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Nonvolatile memory cells with programmable resistive memory elements, such as chalcogenide material elements, undergo a refresh operation. A refresh operation includes a hot signal and a cold signal, where the hot signal has higher power than a reset signal, and a cold signal has a longer duration than a set signal.