Enhanced codeword for media persistence and diagnostics

A method, comprising:

• identifying a change to a codeword stored in a first memory die of a memory device on a module that comprises a plurality of multi-die packaged memory devices;
• generating, in response to the identified change to the codeword, an exclusive-or (XOR) result using an XOR logic operation on the codeword;
• writing the XOR result as parity data to a second memory die of the memory device;
• determining that the first memory die of the memory device experienced a data error;
• and
• restoring the codeword using an inverse of the XOR logic operation on the parity data from the second memory die of the memory device.

A memory module, comprising:

• a plurality of memory devices comprising a first subset of memory die and a second subset of memory die, wherein each memory die of the first subset of memory die is configured to store a respective codeword of a plurality of enhanced codewords;
• a plurality of channels communicatively coupled to each memory device of the plurality of memory devices, wherein each channel of the plurality of channels is associated with a respective memory die of the first and second subset of memory die;
• and
• a memory controller communicatively coupled to each the plurality of channels, wherein the memory controller is configured to:
• update memory operation information of the respective codeword to be stored on a respective memory die of the first subset of memory die;
• determine parity data based at least in part on the updated memory operation information of the respective codeword;
• store the parity data in the second subset of memory die;
• determine that a data loss event occurred;
• and
• recreate lost memory operation information from the data loss event using the parity data and data stored in the first subset of memory die based at least in part on determining that the data loss event occurred.