| 摘要 |
PURPOSE: An approaching method of flash memory is provided to complete a slow access time by updating only small data and to increase an operating speed and a life of flash memory by minimizing a necessity of erase time. CONSTITUTION: Data areas not used at present are erased among plural data area until a writing operation of flash memory is not performed and it is stand-by until the erase operation is finished. When the present used data area are filled all in finished the erase operation during watching a state if the present used data area are filled all, a data of final block is copied to a first block of an area finished the erase operation. An invalid block flag is set to inform that a data of an area used newly is valid. Moreover, other variables related with the operation are updated together.
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