US 12,405,736 B2
Operating methods, memory controllers, and memory systems
Jin Cai, Hubei (CN); and Xianwu Luo, Hubei (CN)
Assigned to Yangtze Memory Technologies Co., Ltd., Hubei (CN)
Filed by Yangtze Memory Technologies Co., Ltd., Hubei (CN)
Filed on Dec. 30, 2022, as Appl. No. 18/148,784.
Claims priority of application No. 202211485510.3 (CN), filed on Nov. 24, 2022.
Prior Publication US 2024/0176519 A1, May 30, 2024
Int. Cl. G06F 3/06 (2006.01)
CPC G06F 3/0634 (2013.01) [G06F 3/0619 (2013.01); G06F 3/0659 (2013.01); G06F 3/0688 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An operating method for a memory controller contained in a memory system, the memory system further includes a memory, and the memory includes a memory array and is controlled by the memory controller; the operating method comprising:
in response to a working mode switching command, determining a state of redundancy check data in a redundancy check cache of the memory controller, the redundancy check data being used for data recovery of a corresponding storage area in the memory array;
sending, via a second communication interface coupled with the memory, a write command to the memory, the write command including the redundancy check data in the state of an updated state; and
backing up the redundancy check data in the state of the updated state into a backup area of the memory array.