US 12,093,170 B2
Memory system
Akifumi Fukuda, Yokohama Kanagawa (JP)
Assigned to KIOXIA CORPORATION, Tokyo (JP)
Filed by Kioxia Corporation, Tokyo (JP)
Filed on Aug. 25, 2022, as Appl. No. 17/895,776.
Claims priority of application No. 2021-202016 (JP), filed on Dec. 13, 2021.
Prior Publication US 2023/0185709 A1, Jun. 15, 2023
Int. Cl. G06F 12/02 (2006.01); G06F 3/06 (2006.01)
CPC G06F 12/0246 (2013.01) [G06F 3/0616 (2013.01); G06F 3/0653 (2013.01); G06F 3/0679 (2013.01); G06F 2212/7211 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A memory system comprising:
a non-volatile memory; and
a memory controller including a counter, the memory controller being configured to control a write operation to the non-volatile memory and a read operation from the non-volatile memory and configured to obtain wear information of the non-volatile memory,
wherein the memory controller is configured to
update the counter based on the wear information,
upon determining that a first value exists within a group of second values,
execute a persistence process configured to store information of the counter in a non-volatile manner.