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PROCÉDÉ DE RÉCUPÉRATION DE DONNÉES APRÈS COURT-CIRCUIT DE LIGNE DE MOTS À LIGNE DE MOTS
PROCÉDÉ DE RÉCUPÉRATION DE DONNÉES APRÈS COURT-CIRCUIT DE LIGNE DE MOTS À LIGNE DE MOTS
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摘要
A memory device and associated techniques provide a read recovery of data in case of a short circuit between word lines. When cells of a recovery word line WLrec are successfully programmed but cells of an adjacent work line WLrec+1 are not successfully programmed, the data of the cells of WLrec can be recovered. The cells of WLrec+1 are erased so that a low pass voltage on WLrec+1 is adequate to provide these cells in a conductive state during the recovery read of WLrec. Capacitive coupling between the word lines which shifts the apparent threshold voltage of the cells on WLrec is reduced so that a more accurate recovery read can be performed. Read voltages on WLrec can be upshifted compared to baseline read voltages.
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