PROTECTION SCHEME WITH DUAL PROGRAMMING OF A MEMORY SYSTEM

摘要

A memory system or flash memory device may include a linking or grouping of blocks that are used for dual writing. In particular, meta-blocks in the memory may be linked in such a way that enables a data transfer to simultaneously occur in two meta-blocks. The dual versions of the programming may be used for error correction. If there is a failure or write error in one of the meta-blocks, then the data from the other meta-block may be used. If there is no failure then the secondary meta-block may be erased.

主权项

1. A flash memory device comprising:
a non-volatile storage having memory blocks storing data; and a controller in communication with the non-volatile storage, the controller is configured for:
establishing a primary update meta-block comprising memory blocks from a first die;establishing a secondary update meta-block comprising memory blocks from a second die; andprogramming, simultaneously, the primary update meta-block and the secondary update meta-block based on a host write command.