Calibration of threshold voltage shift values

Threshold voltage shift values, or TVS values, are calibrated for a non-volatile memory unit including strings of memory cells organized into memory pages, the memory pages being organized into blocks. The calibration involves a read operation to read a given page of the memory pages, based on given...

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Bibliographic Details
Main Authors Papandreou, Nikolaos, Pletka, Roman Alexander, Fisher, Timothy J, Fry, Aaron Daniel, Pozidis, Charalampos, Stoica, Radu Ioan, Ioannou, Nikolas
Format Patent
LanguageEnglish
Published 10.09.2024
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
INFORMATION STORAGE
PHYSICS
STATIC STORES
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Summary:Threshold voltage shift values, or TVS values, are calibrated for a non-volatile memory unit including strings of memory cells organized into memory pages, the memory pages being organized into blocks. The calibration involves a read operation to read a given page of the memory pages, based on given one or more TVS values for the given page. In response to a read failure of the read operation, the calibration determines one or more corrected TVS values based on one or more reference TVS values of one or more reference pages of the memory pages. The calibration subsequently performs a read operation to read the given page based on the one or more corrected TVS values. This calibration exploits TVS values of reference pages to determine corrected TVS values of the failing page, instead of finding appropriate TVS values by repeatedly re-reading the failing page.
Bibliography:Application Number: US202217821608