Lee & Morse, P.C.
Memory device, memory system having the same, and programming method of a memory cell
A method of writing multi-bit data to a semiconductor memory device with memory cells storing data defined by a threshold value, the method comprising, for each memory cell, writing a least significant bit, verifying completion of writing the least significant bit, verifying including comparing a written value to one of a low least significant bit verification value and a high least significant bit verification value, and writing a next significant bit upon completion of writing the least significant bit.
Samsung Electronics Co., Ltd.
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Ho Jung Hyun Ho Seung Eon Sang Beom Chul Woo
Kim Choi Ahn Kang Park