APPARATUS AND METHOD FOR MANAGING PROGRAM OPERATION TIME AND WRITE LATENCY IN MEMORY SYSTEM

摘要

A method of operating a controller according to the present invention includes: checking the number of programmable pages included in each of a plurality of open blocks; and generating a first free block by performing a first erase operation on some of the plurality of erase target blocks according to the number of first open blocks in which the number of programmable pages is less than a threshold value.