Block management method, memory control circuit unit and apparatus using mapping tables and block recognition machine learning with block parameters as training data

Abstract

A block management method, a memory control circuit unit and a memory storage apparatus for managing a plurality of physical blocks are provided. The method includes writing test data to a first physical block among the plurality of physical blocks, reading the test data from the first physical block among the plurality of physical blocks to obtain a plurality of parameters corresponding to the first physical block; grouping the first physical block into a first block group or a second block group according to the plurality of parameters corresponding to the first physical block and a rule between the plurality of parameters and grouping of the plurality of physical blocks; establishing first and second block mapping tables; and mapping logical addresses of the first and second block mapping tables to the plurality of physical blocks belonging to the first and second block groups. The parameters may comprise at least one of a read busy time parameter, a storage retention parameter, and a bit error position parameter. The bit error position parameter may be obtained according to an error bits distribution in upper, center and lower physical programming units. A usage status may be determined according to the parameters, and blocks with a usage status of good may be used first to evenly use all the plurality of physical blocks.