公开(公告)号：US20240385760A1

公开(公告)日：2024-11-21

申请号：US18788695

申请日：2024-07-30

Applicant: KIOXIA CORPORATION

Inventor： Shunichi IGAHARA ,  Toshikatsu HIDA ,  Riki SUZUKI ,  Takehiro AMAKI ,  Suguru NISHIKAWA ,  Yoshihisa KOJIMA

IPC: G06F3/06 ,  G06F12/02 ,  G06F12/10

Abstract: According to one embodiment, a memory system includes a nonvolatile memory and a controller electrically connected to the nonvolatile memory. The controller selects a write mode from a first mode in which data having N bits is written per one memory cell and a second mode in which data having M bits is written per one memory cell. N is equal to or larger than one. M is larger than N. The controller writes data into the nonvolatile memory in the selected write mode. The controller selects either the first mode or the second mode at least based on a total number of logical addresses mapped in a physical address space of the nonvolatile memory.