System and method of copying data

摘要

A method of copying data includes receiving a command instructing copying of data from a source location in the memory die to a destination location in the memory die. The method includes determining if a criterion is met, including comparing a predefined parameter to a dynamic threshold. In response to determining that the criterion is met, the method includes executing the copying by moving the data from the source location in the memory die to the controller die and, after moving the data to the controller die, moving an error-corrected version of the data from the controller die to the destination location in the memory die. In response to determining that the criterion is not met, the method includes executing the copying by moving the data inside the memory die source location to the destination location without moving the data to the controller die.

主权项

1. A method of copying data, the method comprising:
in a memory device with a controller die and a memory die, performing:
receiving a command from a host that is external to the memory device, the command instructing copying of data from a source location in the memory die to a destination location in the memory die, wherein a first group of storage elements corresponds to the source location and a second group of storage elements corresponds to the destination location;determining by the memory device if a criterion is met, wherein determining whether the criterion is met includes comparing a parameter to a dynamic threshold, wherein a value of the dynamic threshold is determined by performing a table look-up operation that includes a write/erase count and an elapsed time;in response to determining that the criterion is met:
moving the data from the first group of storage elements in the memory die to the controller die, andafter moving the data to the controller die, performing an error correction coding (ECC) operation on the data to generate error-corrected data and moving the error-corrected data from the controller die to the second group of storage elements in the memory die; andin response to determining that the criterion is not met, executing the copying by moving the data inside the memory die from the first group of storage elements to the second group of storage elements without moving the data to the controller die.