VOLATILE MEMORY, MEMORY MODULE INCLUDING THE SAME, AND METHOD FOR OPERATING THE MEMORY MODULE

摘要

A memory module includes an emergency power supplier, a plurality of ranks each including one or more volatile memories a non-volatile memory, and a controller suitable for backing up data of the ranks into the non-volatile memory by using the emergency power supplier during a power failure, wherein the ranks are sequentially backed up, and while one rank is backed up among the ranks, the other ranks are controlled in a self-refresh mode.