METHOD TO DISTRIBUTE USER DATA AND ERROR CORRECTION DATA OVER DIFFERENT PAGE TYPES BY LEVERAGING ERROR RATE VARIATIONS

摘要

An apparatus includes a memory and a controller. The memory includes a plurality of memory devices. Each memory device has a plurality of page types. The plurality of page types are classified based on error rate variations. The controller may be configured to write user data and error-correction data to the memory. The user data and the error-correction data are organized as a super-page. The super-page includes a plurality of sub-pages. The plurality of sub-pages are written across the plurality of memory devices such that the plurality of sub-pages are stored using more than one of the plurality of page types.

主权项

1. An apparatus comprising:
a memory comprising a plurality of memory devices, each memory device having a plurality of page types, wherein said plurality of page types are classified based on error rate variations; and a controller configured to write user data and error-correction data to said memory, wherein said user data and said error-correction data is organized as a super-page, said super-page comprises a plurality of sub-pages, and said plurality of sub-pages are written across said plurality of memory devices such that said plurality of sub-pages are stored using more than one of said plurality of page types.