Data writing method and storage controller

A storage controller, configured for controlling a storage device equipped with a rewritable non-volatile memory module, the storage controller comprising:

• a connection interface circuit, coupled to a host system;
• a memory interface control circuit, coupled to the rewritable non-volatile memory module, wherein the rewritable non-volatile memory module has a plurality of physical pages;
• a write resuming operation circuit unit;
• and
• a processor, coupled to the connection interface circuit, the memory interface control circuit and the write resuming operation circuit unit,
• wherein the processor is configured to receive a first write command and a first data corresponding to the first write command from a host system, stores the first write command into a command queue in a buffer memory, and stores the first data into the buffer memory, wherein the first write command instructs to store the first data into a first logical address,
• wherein the processor further starts to execute the first write command, copies the first data into a register, and records a first physical address into a logical-to-physical address mapping table to map the first physical address into the first logical address, wherein the processor further responds to the host system that the first write command is completed, and instructs the memory interface control circuit to start performing a first program operation to program the first data from the register into the first physical page,
• wherein the processor further instructs the write resuming operation circuit unit to perform a first re-program operation corresponding to the first data in response to determining that the first program operation is failed, the first re-program operation comprising:
• the write resuming operation circuit unit determines whether to read the first data from the register according to the logical-to-physical address mapping table;
• the write resuming operation circuit unit reads the first data from the register in response to determining to read the first data from the register;
• and
• the write resuming operation circuit unit mandatorily programs the first data into a second physical page, and after the first data is programmed into the second physical page, a second physical address of the second physical page is recorded into the logical-to-physical address mapping table to map the second physical address into the first logical address, thereby completing the first re-program operation.