Methods of operating non-volatile memory devices during write operation interruption, non-volatile memory devices, memories and electronic systems operating the same

A method of operating a non-volatile memory device comprising:

• writing a portion of a new codeword to a memory region in the device that stores an old codeword including a plurality of old error correction bits, as part of a write operation;
• detecting interruption of the write operation before completion in the device, indicating that the memory region stores the portion of the new codeword that was written before the interruption and a portion of the old codeword that was not overwritten before the interruption, and further indicating that the memory region stores a corrupted codeword due to the interruption of the write operation wherein error correction bits correspond only to the old codeword;
• combining the portion of the old codeword with the portion of the new codeword to provide an updated codeword;
• generating a plurality of updated error correction bits using the updated codeword;
• and
• writing the updated error correction bits to the memory region.