MULTI-PHASE PROGRAMMING SCHEMES FOR NONVOLATILE MEMORIES

摘要

A method for data storage includes defining an end-to-end mapping between data bits to be stored in a memory device that includes multiple memory cells and predefined programming levels. The data bits are mapped into mapped bits, so that the number of the mapped bits is smaller than the number of the data bits. The data bits are stored in the memory device by programming the mapped bits in the memory cells using a programming scheme that guarantees the end-to-end mapping. After storing the data bits, the data bits are read from the memory device in accordance with the end-to-end mapping.

主权项

1. A method for data storage, comprising:
defining an end-to-end mapping between data bits to be stored in a memory device that comprises multiple memory cells and predefined programming levels; mapping the data bits into mapped bits, so that a number of the mapped bits is smaller than a number of the data bits; storing the data bits in the memory device by programming the mapped bits in the memory cells using a programming scheme that guarantees the end-to-end mapping; and after storing the data bits, reading the data bits from the memory device in accordance with the end-to-end mapping.