Memory card having an eeprom.

摘要

A method of recording data in a memory card using an EEPROM (Electrically Erasable Programmable Read Only Memory). A main memory section (10) has clusters including some idle clusters storing no data therein as distinguished from active clusters storing data therein. When data stored in designated one of the active clusters should be rewritten, a cluster selection control (26) determines whether or not the active cluster of interest has undergone rewriting a predetermined number of times. If the answer of the decision is positive, the cluster control section (26) substitutes the logical address of a particular idle cluster for the logical address of the active cluster to thereby include the idle cluster in the active clusters. Data is written to the idle cluster having turned out an active cluster. Data stored in the cluster replaced by the idle cluster is deleted by a delete signal fed from a system control (32) to thereby serve as an idle cluster. The logical addresses of the clusters and the number of times that the individual clusters have undergone rewriting are stored in a supervisory memory 28 which supervises the main memory section (10). <IMAGE>