Memory controller for controlling power loss recovery and method of operating the same

An apparatus comprising:

• a memory device;
• and
• a memory controller configured to control the memory device to:
• store dump data and a dump age in a recovery area of the memory device based on detection of a sudden power-off, the dump data corresponding to host data temporarily stored in a memory buffer of the memory controller;
• and
• perform a recovery operation based on a result of comparing the dump age and a meta age,
• wherein the dump age indicates a number of times that different items of host data corresponding to the dump data have been dumped, and
• wherein the meta age indicates a dump age corresponding to dump data used for a most recently completed recovery operation.

A method of operating a memory controller, the method comprising:

• storing host data, from a host, in a memory buffer;
• when a sudden power-off is detected, storing dump data and a dump age corresponding to the dump data, the dump data corresponding to the host data stored in the memory buffer;
• determining whether the host data is to be dumped to a memory device;
• outputting the dump data and the dump age to the memory device;
• when a power is turned on after the sudden power-off, receiving the dump data and the dump age from the memory device;
• and
• performing a recovery operation based on the dump age and a meta age,
• wherein the dump age indicates a number of times that different items of host data have been dumped as the dump data, and
• wherein the meta age indicates a dump age corresponding to dump data used for a most recently completed recovery operation.