US 11,656,940 B2
Techniques for managing temporarily retired blocks of a memory system
Deping He, Boise, ID (US); Chun Sum Yeung, San Jose, CA (US); and Jonathan S. Parry, Boise, ID (US)
Assigned to Micron Technology, Inc., Boise, ID (US)
Filed by Micron Technology, Inc., Boise, ID (US)
Filed on Jan. 12, 2022, as Appl. No. 17/574,059.
Claims priority of provisional application 63/232,980, filed on Aug. 13, 2021.
Prior Publication US 2023/0045990 A1, Feb. 16, 2023
Int. Cl. G06F 11/00 (2006.01); G06F 11/10 (2006.01); G06F 11/07 (2006.01); G06F 3/06 (2006.01)
CPC G06F 11/1068 (2013.01) [G06F 3/064 (2013.01); G06F 3/0619 (2013.01); G06F 3/0659 (2013.01); G06F 3/0679 (2013.01); G06F 11/076 (2013.01); G06F 11/0772 (2013.01)] 25 Claims
OG exemplary drawing
 
25. A method performed by a memory system, the method comprising:
determining an occurrence of at least one error for a block of memory cells of the memory system;
storing an index associated with the block of memory cells to a first mapping that indicates one or more temporarily retired blocks of memory cells of the memory system;
performing a media management operation on the block of memory cells based at least in part on storing the index to the first mapping;
determining whether to retire the block or enable the block based at least in part on performing the media management operation on the block of memory cells associated with the index that is stored to the first mapping that indicates the one or more temporarily retired blocks of memory cells of the memory system; and
transferring the index to a different mapping based at least in part on determining whether to retire or enable the block.