Wear-Leveling Method for Non-Volatile Memory in Hybrid Memory System and Hybrid Memory System

摘要

PURPOSE: In a hybrid memory system, the number of writing to a nonvolatile memory can be reduced. This can lead to increasing the lifetime of a nonvolatile memory. CONSTITUTION: Data requested to be written in a memory are stored in a memory buffer (20S). Data which are written fewest times among a certain number of data in the oldest area that has been written in the memory buffer (40S). Victim data is stored in a nonvolatile memory (50S). [Reference numerals] (10S) Request for a memory writing process; (20S) Store data in a memory buffer; (40S) Select the least written element as a victim among N elements with LRW location; (50S) Store the victim data in a PRAM Main Memory; (70S) Swap multiple data based on a page basis; (71S) Swap multiple data based on a line basis