NON-VOLATILE MEMORY DEVICE, DATA UPDATING METHOD, DATA UPDATING PROGRAM AND COMPUTER READABLE RECORDING MEDIUM WITH RECORDED PROGRAM

摘要

PROBLEM TO BE SOLVED: To solve a problem of incapable of selecting the restart of data updating when a power supply is cut off in an interval from erasing a region where data of a non-volatile memory are updated to writing the updated data after being updated therein.

SOLUTION: In this non-volatile memory device, the data before being updated and updating data necessary for the updating are written into the non-volatile memory before erasing the data before being updated. A state flag expressing whether or not the data are under writing after the updating is written in the non-volatile memory. In starting, when the set of the state flag is under the writing of the data after the updating, it is determined whether restarting the updating using the data before the updating stored in the non-volatile memory and the data for the updating, or resetting the original data.

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