APPARATUS AND METHOD FOR MANAGING PAGE BUFFER LINKED WITH FLASH MEMORY AND APPARATUS AND METHOD FOR CHANGING PAGE OF FLASH MEMORY

摘要

PURPOSE: An apparatus and a method for managing a page buffer linked with a flash memory and an apparatus and a method for changing a page of a flash memory are provided to improve performance of the flash memory, increase a buffer hit rate and extend lifetime of the flash memory. CONSTITUTION: A buffer unit(210) stores data of a page unit read from a flash memory. If the amount of data saved in the buffer unit becomes a reference amount, a buffer managing unit(220) selects replaced data among the data saved in the buffer unit to remove it. A page list managing unit(230) generates a clean page list and a dirty page list and deletes a page index corresponding to target data to be replaced.