METHOD AND APPARATUS FOR READING NAND FLASH MEMORY

摘要

PROBLEM TO BE SOLVED: To provide a method and an apparatus for reading a NAND flash memory which eliminate gaps and discontinuities in data output.SOLUTION: A page buffer for a NAND memory array has a data register and a cache register that are suitably organized and operated to eliminate gaps and discontinuities in output data during a continuous page read. The cache register may be organized in two portions, and page data in the cache register may be output continuously from the cache memory portions in alternation. Delay in Error Correction Code (ECC) computation may be eliminated from the output by performing the ECC computation on one cache memory portion while the other is being output. The data register may also be organized in two portions corresponding to the cache memory portions, so that one page portion may be transferred while the other is being output.