Patent ID: 11868618
Assignee: KIOXIA CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 7:
8. A memory system configured to communicate with a host device including a first semiconductor memory, the memory system comprising:
a second semiconductor memory configured to store first address conversion information and data in a nonvolatile manner,
a third semiconductor memory configured to store second address conversion information, the second address conversion information being part of the first address conversion information, and
a controller configured to access the second semiconductor memory by referring to the second address conversion information in the third semiconductor memory,
wherein third address conversion information is stored in the first semiconductor memory, the third address conversion information being part of or all of the first address conversion information, and
wherein the controller is further configured to access the second semiconductor memory by referring to the third address conversion information in the first semiconductor memory in a case where address conversion information to be referred is not stored in the second address conversion information.