METHOD OF CONTROLLING FLASH MEMORY AND FLASH MEMORY SYSTEM USING THE SAME

摘要

A method for managing a flash memory and a flash memory system using the same are provided to prevent timeout and improve system performance by executing a merge operation for one log block and one data block incrementally without executing in a block unit, and performing a write operation in a temporary block. A flash memory system includes a host(100), a flash memory(300), and an interface(200) transferring a command of the host to the flash memory. The interface performs a merge operation depending on whether a log block for performing a write command is allocated in a logical block of the flash memory when the write command is received from the host. The interface performs a part of the merge operation by receiving a free block to be a new data block if the allocated log block is not found in the logical block when the write command is the write command for one page of the log block. The interface allocates the free block completing the merge operation as the new log block.