公开(公告)号：US10811078B2

公开(公告)日：2020-10-20

申请号：US16779194

申请日：2020-01-31

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sang-Uhn Cha ,  Hyun-Gi Kim ,  Hoon Sin ,  Ye-Sin Ryu ,  In-Woo Jun

IPC: G01C7/00 ,  G11C11/406 ,  G06F11/10

Abstract: A semiconductor memory device includes a memory cell array, an error correction code (ECC) engine, a refresh control circuit, a scrubbing control circuit and a control logic circuit. The refresh control circuit generates refresh row addresses for refreshing a memory region on memory cell rows in response to a first command received from a memory controller. The scrubbing control circuit counts the refresh row addresses and generates a scrubbing address for performing a scrubbing operation on a first memory cell row of the memory cell rows whenever the scrubbing control circuit counts N refresh row addresses of the refresh row addresses. The ECC engine reads first data corresponding to a first codeword, from at least one sub-page in the first memory cell row, corrects at least one error bit in the first codeword and writes back the corrected first codeword in a corresponding memory location.

公开(公告)号：US11031065B2

公开(公告)日：2021-06-08

申请号：US17024259

申请日：2020-09-17

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sang-Uhn Cha ,  Hyun-Gi Kim ,  Hoon Sin ,  Ye-Sin Ryu ,  In-Woo Jun

IPC: G11C7/00 ,  G11C11/406 ,  G06F11/10

Abstract: A semiconductor memory device includes a memory cell array, an error correction code (ECC) engine, a refresh control circuit, a scrubbing control circuit and a control logic circuit. The refresh control circuit generates refresh row addresses for refreshing a memory region on memory cell rows in response to a first command received from a memory controller. The scrubbing control circuit counts the refresh row addresses and generates a scrubbing address for performing a scrubbing operation on a first memory cell row of the memory cell rows whenever the scrubbing control circuit counts N refresh row addresses of the refresh row addresses. The ECC engine reads first data corresponding to a first codeword, from at least one sub-page in the first memory cell row, corrects at least one error bit in the first codeword and writes back the corrected first codeword in a corresponding memory location.

公开(公告)号：US11557332B2

公开(公告)日：2023-01-17

申请号：US17322227

申请日：2021-05-17

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sang-Uhn Cha ,  Hyun-Gi Kim ,  Hoon Sin ,  Ye-Sin Ryu ,  In-Woo Jun

IPC: G11C7/00 ,  G11C11/406 ,  G06F11/10

Abstract: A semiconductor memory device includes a memory cell array, an error correction code (ECC) engine, a refresh control circuit, a scrubbing control circuit and a control logic circuit. The refresh control circuit generates refresh row addresses for refreshing a memory region on memory cell rows in response to a first command received from a memory controller. The scrubbing control circuit counts the refresh row addresses and generates a scrubbing address for performing a scrubbing operation on a first memory cell row of the memory cell rows whenever the scrubbing control circuit counts N refresh row addresses of the refresh row addresses. The ECC engine reads first data corresponding to a first codeword, from at least one sub-page in the first memory cell row, corrects at least one error bit in the first codeword and writes back the corrected first codeword in a corresponding memory location.

公开(公告)号：US10586584B2

公开(公告)日：2020-03-10

申请号：US16228518

申请日：2018-12-20

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sang-Uhn Cha ,  Hyun-Gi Kim ,  Hoon Sin ,  Ye-Sin Ryu ,  In-Woo Jun

IPC: G11C7/00 ,  G11C11/406 ,  G06F11/10

Abstract: A semiconductor memory device includes a memory cell array, an error correction code (ECC) engine, a refresh control circuit, a scrubbing control circuit and a control logic circuit. The refresh control circuit generates refresh row addresses for refreshing a memory region on memory cell rows in response to a first command received from a memory controller. The scrubbing control circuit counts the refresh row addresses and generates a scrubbing address for performing a scrubbing operation on a first memory cell row of the memory cell rows whenever the scrubbing control circuit counts N refresh row addresses of the refresh row addresses. The ECC engine reads first data corresponding to a first codeword, from at least one sub-page in the first memory cell row, corrects at least one error bit in the first codeword and writes back the corrected first codeword in a corresponding memory location.