Patent ID: 11954357
Assignee: KIOXIA CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A memory system comprising:
a nonvolatile memory that includes a plurality of blocks each including a plurality of memory cells; and
a memory controller configured to control access to the nonvolatile memory and include an address/block management module which manages access information to the nonvolatile memory,
the memory controller configured to:
set a first block, among the plurality of blocks, to be written in a first mode, the first mode being a mode in which data of a first number of bits is written into the memory cell, and set a plurality of second blocks, among the plurality of blocks, to be written in a second mode, the second mode being a mode in which data of a second number of bits is written into the memory cell, the second number being larger than the first number;
acquire the access information related to the plurality of second blocks from the address/block management module without acquiring information related to the first block; and
change a writing mode of the first block which has been set in the first mode to the second mode when a first condition of the second blocks based on the access information is satisfied.