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IEICE TRANSACTIONS on Electronics

Multilevel Storage in Phase-Change Memory

Yang HONG, Yinyin LIN, Ting-Ao TANG, Bomy CHEN

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Summary :

A novel ratio-oriented definition based on 2T2R (Two transistors & two phase change resistors) phase change memory (PCM) cell structure is proposed to gain a high density by multilevel storage. In this novel solution, no reference is needed and good robustness remains still as conventional 2T2R, which is crucial when feature size scales to nanometer technology node. A behavioral SPICE model together with a preliminary simulation proves the idea to be feasible, and further optimization has been carried out. In addition, based on the ratio-oriented definition, a simpler and faster Error Control Coding (ECC) can be realized with n-Error-detection feasible.

Publication
IEICE TRANSACTIONS on Electronics Vol.E90-C No.3 pp.634-640
Publication Date
2007/03/01
Publicized
Online ISSN
1745-1353
DOI
10.1093/ietele/e90-c.3.634
Type of Manuscript
PAPER
Category
Storage Technology

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