Data writing method, memory controller and memory storage apparatus

A memory controller for controlling a rewritable non-volatile memory module, the memory controller comprising:

• a host interface configured to coupled to a host system;
• a memory interface configured to couple to the rewritable non-volatile memory module, wherein the rewritable non-volatile memory module includes at least one memory die, the memory die includes a plurality of physical erasing unit and each of the physical erasing unit includes a plurality of physical programming units;
• a buffer memory;
• a parity information encoding and decoding circuit;
• and
• a memory management circuit coupled to the host interface, the memory interface, the buffer memory, and the parity information encoding and decoding circuit,
• wherein the memory management circuit is configured to receive a first write command and first data corresponding to the first write command and temporarily store the first data into the buffer memory, wherein the first data includes a plurality of sub data streams,
• wherein the memory management circuit is further configured to transmit the sub data streams from the buffer memory to the rewritable non-volatile memory module to write the sub data streams into at least one first physical erasing unit,
• wherein the parity information encoding and decoding circuit is configured to generate parity information based on at least portion of the sub data streams,
• wherein the memory management circuit is further configured to store the parity information into the buffer memory and delete the first data from the buffer memory.

A memory storage apparatus, comprising:

• a connector coupled to a host system;
• a rewritable non-volatile memory module having at least one memory die, wherein the memory die has a plurality of physical erasing unit and each of the physical erasing unit includes a plurality of physical programming units;
• and
• a memory controller having a buffer memory, wherein the memory controller is coupled to the connector and the rewritable non-volatile memory module,
• wherein the memory controller is configured to receive a first write command and first data corresponding to the first write command and temporarily store the first data into the buffer memory, wherein the first data includes a plurality of sub data streams,
• wherein the memory controller is further configured to transmit the sub data streams from the buffer memory to the rewritable non-volatile memory module to write the sub data streams into at least one first physical erasing unit,
• wherein the memory controller is configured to generate parity information based on at least portion of the sub data streams,
• wherein the memory controller is further configured to store the parity information into the buffer memory and delete the first data from the buffer memory.