Patent ID: 11947400
Assignee: KIOXIA CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A controller for a memory system, the memory system including a nonvolatile memory, a buffer, and a battery configured to store power on the basis of power supplied from an external supply, the controller comprising:
an interface circuit configured to be connected with a host; and
a first circuit configured to:
in a case where power becomes unsupplied from the external supply, by using the power stored in the battery,
stop accepting new write commands from the host,
cancel a first write command received from the host if a completion response for the first write command has not been returned to the host, and
write second data stored in the buffer into the nonvolatile memory if a completion response for a second write command received from the host has been returned to the host, the second data being data related to the second write command.