Method and apparatus for performing data access control of memory device

A memory controller of a memory device, the memory device comprising the memory controller and a non-volatile (NV) memory, the NV memory comprising at least one NV memory element, the memory controller comprising:

• a processing circuit, arranged to control the memory controller according to a plurality of host commands from a host device, to allow the host device to access the NV memory through the memory controller;
• and
• a transmission interface circuit, arranged to perform communications with the host device;
• wherein:
• the memory controller receives the plurality of host commands from the host device through the transmission interface circuit of the memory controller, for performing data access on the NV memory according to the plurality of host commands, wherein the data access comprises data reading;
• and
• the memory controller performs a reading parameter optimization procedure to determine at least one optimized reading parameter, for maintaining correctness of the data reading, wherein the reading parameter optimization procedure comprises:
• initializing a raw data indication reference, a temporary minimum reading parameter and a temporary maximum reading parameter, wherein the raw data indication reference is determined according to a default setting, and the temporary minimum reading parameter and the temporary maximum reading parameter are determined to be a maximum and a minimum of an adjustable reading parameter range of a reading parameter, respectively;
• in any iteration among at least one iteration of the reading parameter optimization procedure, calculating the reading parameter to be equal to an average of the temporary minimum reading parameter and the temporary maximum reading parameter;
• in said any iteration, controlling the NV memory to read according to the reading parameter, in order to obtain respective raw data of multiple memory cells in a memory cell group, for determining a raw data indication, wherein the raw data indication represents a number of memory cells whose raw data are equal to a predetermined logic value in a situation where the memory controller is reading the multiple memory cells of the memory cell group according to the reading parameter;
• and
• in said any iteration, comparing the raw data indication with the raw data indication reference to determine whether the raw data indication is greater than or less than the raw data indication reference, for selectively adjusting the temporary maximum reading parameter or the temporary minimum reading parameter to be equal to the reading parameter;
• wherein in a last iteration among at least one iteration, in response to the raw data indication being equal to the raw data indication reference, the memory controller is arranged to determine a first optimized reading parameter among the at least one optimized reading parameter to be equal to the reading parameter.