Data writing method for non-volatile memory, and controller and storage system using the same

A rewritable non-volatile memory controller, for writing data from a host system into a plurality of memory dies, the rewritable non-volatile memory controller comprising:

• a host interface, configured to couple to a data transmission interface of the host system;
• a rewritable non-volatile memory interface, configured to couple to the memory dies;
• and
• a memory management circuit, coupled to the host interface and the rewritable non-volatile memory interface, wherein memory management circuit is configured to:
• determine whether the data transmission interface of the host system complies with a first interface standard or a second interface standard according to information;
• use a general mode to write the data into the memory dies when the data transmission interface of the host system complies with the first interface standard, wherein the number of memory dies that are at a busy status or a transmission status at the same time among the memory dies is not larger than a first amount in the general mode;
• and
• use a power saving mode to write the data into the memory dies when the data transmission interface of the host system complies with the second interface standard, wherein the number of memory dies that are at the busy status or the transmission status at the same time among the memory dies is not larger than a second amount in the power saving mode.

A rewritable non-volatile memory storage system, comprising:

• a connector, configured to couple to a data transmission interface of a host system;
• a memory module, having a plurality of memory dies;
• and
• a rewritable non-volatile memory controller, coupled to the memory module and the connector and configured to:
• determine whether the data transmission interface of the host system complies with a first interface standard or a second interface standard according to information;
• use a general mode to write the data into the memory dies when the data transmission interface of the host system complies with the first interface standard, wherein the number of memory dies that are at a busy status or a transmission status at the same time among the memory dies is not larger than a first amount in the general mode;
• and
• use a power saving mode to write the data into the memory dies when the data transmission interface of the host system complies with the second interface standard, wherein the number of memory dies that are at the busy status or the transmission status at the same time among the memory dies is not larger than a second amount in the power saving mode.