US 12,170,533 B2
Semiconductor memory device and method of operating semiconductor memory device
Sungrae Kim, Suwon-si (KR); Gilyoung Kang, Suwon-si (KR); Yujung Song, Suwon-si (KR); Hyeran Kim, Suwon-si (KR); and Chisung Oh, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Jun. 16, 2023, as Appl. No. 18/336,285.
Claims priority of application No. 10-2022-0144414 (KR), filed on Nov. 2, 2022.
Prior Publication US 2024/0146335 A1, May 2, 2024
Int. Cl. H03M 13/29 (2006.01); G06F 3/06 (2006.01); G06F 11/10 (2006.01); G11C 11/4096 (2006.01); G11C 29/42 (2006.01); G11C 29/52 (2006.01); H03M 13/15 (2006.01)
CPC H03M 13/2909 (2013.01) [G06F 3/0611 (2013.01); G06F 3/0619 (2013.01); G06F 3/0659 (2013.01); G06F 3/0661 (2013.01); G06F 3/0673 (2013.01); G06F 3/0679 (2013.01); G06F 11/10 (2013.01); G06F 11/1032 (2013.01); G06F 11/1048 (2013.01); G11C 11/4096 (2013.01); G11C 29/42 (2013.01); G11C 29/52 (2013.01); H03M 13/1575 (2013.01)] 20 Claims
OG exemplary drawing
 
16. A semiconductor memory device, comprising:
a memory cell array including a plurality of memory cells coupled to a plurality of word-lines and a plurality of bit-lines;
an on-die error correction code (ECC) engine including a first latch and a second latch; and
a control logic circuit configured to control the on-die ECC engine,
wherein the on-die ECC engine, during a write operation, is configured to:
generate a scrambled main data by encoding a main data received from an external device with a random binary code received from the control logic circuit;
perform an ECC encoding on the scrambled main data to generate a parity data; and
store the scrambled main data and the parity data in a target page in the memory cell array, and
wherein the on-die ECC engine, during a read operation, is configured to:
read the scrambled main data and the parity data from the target page;
perform an ECC decoding on the scrambled main data based at least in part on the parity data to generate a syndrome in parallel with generating the main data by encoding the scrambled main data with the random binary code; and
correct at least one error bit, when present, in the main data based on the syndrome.