Patent ID: 9569111
Date: 2017-02-14
CPC Classifications: G06F,G11C

Claim:
1. A system comprising: a semiconductor nonvolatile memory configured to store data; a management unit; and a control unit con figured to input a first voltage to a specific block of the semiconductor nonvolatile memory a plurality of times in response to a single write command and input a second voltage to a specific block of the semiconductor nonvolatile memory a plurality of times in response to a single erase command, wherein the semiconductor nonvolatile memory includes: the management unit is configured to determine, on the basis of first information or second information, degradation of a block in the second area, the first information being information regarding first processing, the first processing being performed in the data writing, the second information being information regarding second processing, the second processing being performed in the data erasing, and when a number of blocks related to the degradation in the second area reaches a first threshold, the management unit causes a display device to display a warning.