Storage device, flash memory, and operating method

摘要

A storage device is provided including a flash memory and a controller programming first bit data and second bit data into the flash memory and not backing up the first bit data when programming the first bit data and the second bit data in the same transaction and backing up the first bit data when programming the first bit data and the second bit data in different transactions, wherein the first bit data is less significant bit data than the second bit data, and each of the transactions is determined using a sync signal transmitted from a host.