Patent attributes
A memory management method is provided. The method includes: using a preset read voltage, a left preset read voltage set and a right preset read voltage set corresponding to the preset read voltage to perform a read operation on a target codeword to obtain a hard bit codeword, a left bit codeword and a right bit codeword, respectively; performing iterative decoding operations on each of the hard bit codeword, the left bit codeword and the right bit codeword to identify a trust codeword having a smallest syndrome among the hard bit codeword, the left bit codeword and the right bit codeword; using the hard bit codeword, the left bit codeword, the right bit codeword and the trust codeword to perform a calibration on a log-likelihood ratio table of the iterative operations, so as to update the log-likelihood ratio table to a calibrated log-likelihood ratio table.