DATA WRITING METHOD, AND MEMORY CONTROLLER AND MEMORY STORAGE APPARATUS USING THE SAME

摘要

A data writing method for a rewritable non-volatile memory module is provided. The rewritable non-volatile memory module has a plurality of lower physical pages and a plurality of upper physical pages respectively corresponding to the lower physical pages. The method includes determining whether a physical page is one of the upper physical pages before writing first data into the physical page; determining whether a backup area stores second data written into one of the lower physical pages corresponding to the physical page if the physical page is the upper physical page; reading the second data from the lower physical page corresponding to the physical page and backing up the second data into the backup area before writing the first data into the physical page when the backup area does not store the second data. Accordingly, the method may effectively prevent data loss due to a program failure.