Static wear leveling design of flash memory in multi-channel parallel access mode

Static wear leveling algorithms are used to determine the lifetime of solid-state flash memory storage systems.The lifetime of flash memory in the multi-channel parallel access mode can be prolonged by a static wear leveling design that proactively moves static data.The design actively picks out blocks with static data using a polling method based on the erase flag and adds them to the block queue to be erased to level the wear on different physical blocks.Tests show that the design increases the average number of erase cycles by at least 8.33%,which effectively levels the wear even in the multi-channel parallel access mode by at least 5.39%.The effect of the trigger threshold on the wear leveling is analyzed to show that the wear leveling and system speed must be balanced in designes.