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:
Mar. 15, 2016
Filed:
Feb. 07, 2014
Applicants:
Stmicroelectronics International NV, Amsterdam, NL;
Stmicroelectronics S.r.l., Agrate Brianza, IT;
Inventors:
BharathManoj Manda, Vijayawada, IN;
Abhishek Lal, Faridabad, IN;
Marco Pasotti, Travaco' Siccomario, IT;
Marcella Carissimi, Treviolo, IT;
Assignee:
STMicroelectronics S.R.L., Agrate Brianza, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 11/00 (2006.01); G06F 11/10 (2006.01); G11C 13/00 (2006.01);
U.S. Cl.
CPC ...
G06F 11/1076 (2013.01); G11C 13/0004 (2013.01); G11C 13/0069 (2013.01); G11C 13/0097 (2013.01); G11C 2211/5646 (2013.01);
Abstract
According to embodiments, a phase change memory (PCM) array includes a plurality of memory cells grouped into memory blocks. In the PCM array, each memory cell is a PCM cell. The PCM array also includes a plurality of erase flag cells. Each erase flag cell of the plurality of erase flag cells is associated with a memory block and indicates whether the memory block stores valid data or erased data.