Memory management method, memory storage device and memory control circuit unit

A memory storage device, comprising:

• a connection interface unit, configured to couple to a host system;
• a rewritable non-volatile memory module;
• and
• a memory control circuit unit, coupled to the connection interface unit and the rewritable non-volatile memory module,
• wherein the memory control circuit unit is configured to receive a first type command from the host system and temporarily store the first type command to a first command queue,
• after receiving the first type command, the memory control circuit unit is further configured to receive a second type command from the host system and temporarily store the second type command to a second command queue,
• if the first command queue meets a preset condition, the memory control circuit unit is further configured to transmit a write command sequence which instructs a programming operation for programming the rewriteable non-volatile memory module according to the first type command in the first command queue,
• if the first command queue does not meet the preset condition, the memory control circuit unit is further configured to maintain the second type command in the second command queue and not to execute the second type command until the first command queue meets the preset condition, and
• after performing the programming operation, the memory control circuit unit is further configured to transmit a response message corresponding to the second type command in the second command queue to the host system,
• wherein the second type command indicates a storing of data in a buffer memory comprising the first command queue to the rewriteable non-volatile memory module.

A memory control circuit unit for controlling a rewritable non-volatile memory module, the memory control circuit unit comprising:

• a host interface configured to couple to a host system;
• a memory interface, configured to couple to the rewritable non-volatile memory module;
• a buffer memory;
• and
• a memory management circuit, coupled to the host interface, the memory interface and the buffer memory,
• wherein the memory management circuit is configured to receive a first type command from the host system and temporarily store the first type command to a first command queue of the buffer memory,
• after receiving the first type command, the memory management circuit is further configured to receive a second type command from the host system and temporarily store the second type command to a second command queue of the buffer memory,
• if the first command queue meets a preset condition, the memory management circuit is further configured to transmit a write command sequence which instructs a programming operation for programming the rewriteable non-volatile memory module according to the first type command in the first command queue,
• if the first command queue does not meet the preset condition, the memory management circuit is further configured to maintain the second type command in the second command queue and not to execute the second type command until the first command queue meets the preset condition, and
• after performing the programming operation, the memory management circuit is further configured to transmit a response message corresponding to the second type command in the second command queue to the host system,
• wherein the second type command indicates a storing of data in the buffer memory comprising the first command queue to the rewriteable non-volatile memory module.