FLASH BASED STORAGE DEVICE USING PAGE BUFFER AS WRITE CACHE AND METHOD OF USING THE SAME

摘要

A method of using a page buffer of a flash memory based storage device as a write cache is disclosed. The flash memory device may include a page buffer to temporarily store data when a read and a write are requested. A programming operation corresponding to a first write command programs data stored in a page buffer to a memory cell array. When the programming operation fails, the flash memory device receives a second write command, and a programming operation corresponding to the second write command programs the data stored in the page buffer to the memory cell array. The second write command and the first write command are write commands with respect to the same data. Accordingly, when the flash memory device uses the data stored in the page buffer, there is no need to receive additional data.