Parametric tracking to manage read disturbed data

摘要

Method and apparatus for managing data in a memory, such as a flash memory array. In accordance with various embodiments, data are stored in a first location in a memory, and read from the first location a selected number of times. At least one parameter associated with the first location is measured after the data are read the selected number of times. The data are thereafter migrated to a second location in the memory responsive to the measured parameter indicating a presence of read disturbance in the data in the first location.

主权项

1. A method comprising storing data in a first location in a memory, successfully reading the data from the first location a selected number of times responsive to a corresponding number of host read commands to retrieve the data from the first location to a host device, using a counter to accumulate the selected number, measuring at least one parameter associated with the first location responsive to the counter reaching the selected number, and migrating the data to a second location in the memory responsive to the measured at least one parameter indicating a presence of read disturbance of said data.