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:
Apr. 14, 2009
Filed:
Mar. 23, 2007
Ferdinando Bedeschi, Biassono, IT;
Richard E. Fackenthal, Carmichael, CA (US);
Ruili Zhang, Rancho Cordova, CA (US);
Ferdinando Bedeschi, Biassono, IT;
Richard E. Fackenthal, Carmichael, CA (US);
Ruili Zhang, Rancho Cordova, CA (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
A phase change memory includes a plurality of cells for storing data in the form of respective resistance levels, addressing circuits for addressing cells to be programmed, and the resistance levels are determined from comparison of cell currents of addressed cells with a reference current. A reference generator provides the sense amplifier with the reference current. The reference generator is provided with a reference select circuit to select the reference current from a plurality of verify currents based on program data to be stored in the cell.