In NAND Flash non-volatile memories the erase operation drives the memory cells threshold voltage toward negative values, barely representing a concern for Multi-Level architectures. However, during the analysis of the erase dynamics in Charge Trapping (CT) memory arrays using an Incremental Step Pulse Erase algorithm, it has been found that a small population of memory cells ( 2%) may randomly exhibit anomalous fast erase dynamics which causes threshold voltage fluctuations during cycling operations. The purpose of this letter is to provide a statistical characterization of this phenomenon in CT-NAND Flash arrays, thus helping the comprehension of its underlying physical mechanisms.

Statistical Investigation of Anomalous Fast Erase Dynamics in Charge Trapping NAND Flash

ZAMBELLI, Cristian;OLIVO, Piero
2013

Abstract

In NAND Flash non-volatile memories the erase operation drives the memory cells threshold voltage toward negative values, barely representing a concern for Multi-Level architectures. However, during the analysis of the erase dynamics in Charge Trapping (CT) memory arrays using an Incremental Step Pulse Erase algorithm, it has been found that a small population of memory cells ( 2%) may randomly exhibit anomalous fast erase dynamics which causes threshold voltage fluctuations during cycling operations. The purpose of this letter is to provide a statistical characterization of this phenomenon in CT-NAND Flash arrays, thus helping the comprehension of its underlying physical mechanisms.
2013
Zambelli, Cristian; Olivo, Piero
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/1772500
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 3
  • ???jsp.display-item.citation.isi??? 3
social impact