APPARATUS AND METHOD FOR DETECTING AND CORRECTING READ DISTURB ERRORS ON A FLASH MEMORY

摘要

An application executed on a device reads a portion of a memory during one of an initialization operation and a regular read operation. The application may trigger a preventative read operation during at least one regular read operation. During the preventative read operation the application selects at least one block and at least one page for the preventative read operation. The application determines a cadence for the preventative read operation. The application obtains an error correction code (ECC) status for the portion of the memory, determines if a number of errors associated with the portion is greater than a predefined ECC threshold and performs a correction, responsive to determining that a number of errors associated with the portion is greater than a predefined ECC threshold.

主权项

1. A method, comprising:
reading, by a processor on a device, a portion of a memory during one of an initialization operation and a regular read operation; triggering, by the processor, a preventative read operation during at least one regular read operation, wherein during the preventative read operation the device selects at least one block and at least one page for the preventative read operation ; determine, by the processor, a cadence for the preventative read operation; obtaining, by the processor, an error correction code (ECC) status for the portion of the memory; determining, by the processor, if a number of errors associated with the portion is greater than a predefined ECC threshold; and performing a correction, by the processor, responsive to determining that a number of errors associated with the portion is greater than a predefined ECC threshold.