OPERATING METHOD OF NONVOLATILE MEMORY DEVICE AND NONVOLATILE MEMORY SYSTEM

摘要

According to an embodiment of the present invention, an operation method of a non-volatile memory device includes the steps of: receiving multiple sub-page data and a write command from an external device; firstly main-programming at least one of the received sub-page data on memory cells included in a main region; buffer-programming the rest of the sub-page data in memory cells included in a buffer region; and secondly main-programming the data, buffer-programmed in the buffer region, in the firstly main-programmed memory cells.