STORAGE DEVICE COMPRISING NON-VOLATILE MEMORY CHIPS AND CONTROL METHOD THEREOF

摘要

A storage device according to an embodiment of the present invention comprises: a plurality of memory chips which include nonvolatile memory cells which are divided into a first memory area and a second memory area; and a memory controller which buffers data from the outside and controls the memory chips to perform a buffer program operation to store the buffered data in the first memory area, and perform a main program operation to write the data stored in the first memory area onto the second memory area. The memory controller buffers data to be written on the second memory chip during the main program operation of the first memory chip, among the plurality of memory chips.