SEMICONDUCTOR MEMORY DEVICES AND WEAR LEVELING METHODS THEREOF

摘要

A semiconductor memory device and a method for managing abrasion of the same are provided to improve performance and product life of the semiconductor memory device by applying an abrasion managing method according to abrasion condition. A semiconductor memory device(100) includes a non-volatile memory and a memory controller(120). The non-volatile memory has a plurality of memory blocks. Erasure frequency of each memory block is stored in at least one of the plurality of memory blocks. The memory controller manages abrasion of the non-volatile memory. The memory controller manages the cycle of abrasion management with reference to the erasure frequency.