Memory system for writing fractional data into nonvolatile memory

摘要

According to one embodiment, a memory system includes a volatile memory, a nonvolatile memory and a controller circuit. The controller circuit configured to control the volatile memory and the nonvolatile memory and to perform a write process and a non-volatilization process. The controller circuit is further configured to, during the write process, store write data in the volatile memory, and during the non-volatilization process, upon determining that data size stored in the write buffer being less than unit of writing of the nonvolatile memory, suspend completion of the non-volatilization process and not return a notification of completion of the non-volatilization process.