US 12,379,847 B2
Storage device and memory system
Shinichiro Tagami, Kawasaki Kanagawa (JP)
Assigned to KIOXIA CORPORATION, Tokyo (JP)
Filed by Kioxia Corporation, Tokyo (JP)
Filed on Aug. 10, 2023, as Appl. No. 18/447,505.
Claims priority of application No. 2022-150518 (JP), filed on Sep. 21, 2022.
Prior Publication US 2024/0094913 A1, Mar. 21, 2024
Int. Cl. G06F 3/06 (2006.01)
CPC G06F 3/0611 (2013.01) [G06F 3/0659 (2013.01); G06F 3/0679 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A storage device comprising:
a non-volatile memory; and
a memory controller configured to:
store a plurality of parameters for setting different operating conditions in the non-volatile memory;
analyze an access pattern indicating a tendency to access the non-volatile memory by a command from a host device;
select an optimal parameter from among the plurality of parameters based on the access pattern analyzed;
access the non-volatile memory in a state where the optimal parameter is set in the non-volatile memory; and
present the optimal parameter to the host device, wherein when the host device instructs a change to the optimal parameter in response to a presentation by the memory controller, the memory controller accesses the non-volatile memory in a state where the optimal parameter is set in the non-volatile memory, and wherein the memory controller transmits information to the host device, the information including the optimal parameter in a response to a read command, a write command, a synchronized cache command, or an UNMAP command conforming to a universal flash storage (UFS) standard.