BGO FLASH MEMORY DEVICE AND CONTROLLING METHOD OF FLASH MEMORY

摘要

PURPOSE: A BGO(Background Operation) flash memory and a controlling method thereof are provided to ensure a storing process having a high rewriting frequency. CONSTITUTION: Upon requiring the data reclaiming of a cluster A, the application of the cluster A searches a blank cluster in a BGO flash memory. When a cluster D is the blank cluster, the address of the blank cluster is obtained with reference to the cluster ID of the cluster D. When the blank cluster does not exist, the invalid clusters are collectively removed for making up a blank cluster for the address of the blank cluster to be obtained. After obtaining the address of the blank cluster, the application of the cluster. The copy flag of the cluster A currently as 01h. An application ID of its own is registered in the blank cluster, then the application of the cluster. After completion of the copying operation, the cluster A is collectively eliminated.