Memory system

摘要

According to the embodiments, a memory system includes a nonvolatile semiconductor memory and a writing-loop-count monitoring unit that monitors a loop count of an applied voltage to the nonvolatile semiconductor memory required for data writing of the nonvolatile semiconductor memory as a writing loop count. Moreover, the memory system includes a management table for managing the writing loop count in block unit that is a unit of data erasing and a life managing unit that determines a degraded state of the nonvolatile semiconductor memory based on the management table.

主权项

1. A system comprising:
a memory; and a management unit configured to determine a state of the memory, wherein the memory comprises:
a first semiconductor nonvolatile memory configured to store data, the first semiconductor nonvolatile memory including a first area and a second area, the first area storing data from a host and the second area including blocks for at least one of management, replacement, and buffering; anda second semiconductor nonvolatile memory configured to store management information of the first semiconductor nonvolatile memory, the management information of the first semiconductor nonvolatile memory including management information of the second area, whereinthe second semiconductor nonvolatile memory is configured to store a number of blocks related to degradation in the second area of the memory, andthe management unit is configured to cause a display device to display a warning when the number of blocks related to the degradation in the second area reaches a first threshold.