Systems and methods to update reference voltages in response to data retention in non-volatile memory

Systems and methods to update reference voltages in response to data retention in non-volatile memory

A data storage device includes non-volatile memory and a controller. The controller is configured to, at a first time, determine a first count of storage elements having threshold voltages within a voltage range that corresponds to a first reference voltage. The controller is further configured to,...

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Bibliographische Detailangaben
Hauptverfasser: D'ABREU MANUEL ANTONIO, DESIREDDI SATEESH, VENKITACHALAM ANAND, NARADASI JAYAPRAKASH, SKALA STEPHEN
Format: Patent
Sprache:eng
Schlagworte:
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
INFORMATION STORAGE
PHYSICS
STATIC STORES
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Beschreibung
Zusammenfassung:A data storage device includes non-volatile memory and a controller. The controller is configured to, at a first time, determine a first count of storage elements having threshold voltages within a voltage range that corresponds to a first reference voltage. The controller is further configured to, at a second time, determine a second count of storage elements having threshold voltages within the voltage range. The controller is further configured to calculate an updated first reference voltage at least partially based on the first reference voltage, the first count, and the second count.