Patent ID: 9626109
Date: 2017-04-18
CPC Classifications: G06F,G11C

Claim:
1. A memory system comprising: a nonvolatile memory part storing an operating parameter required to perform a data read operation or a data write operation; a volatile memory part holding the operating parameter read out from the nonvolatile memory part after turning power on; and a controller writing back the operating parameter in the volatile memory part to a first position of the nonvolatile memory part storing the operating parameter, based on a number of times of power input to the volatile memory part or a number of times of reading the operating parameter, wherein the nonvolatile memory part stores the number of times of power input or the number of times of reading the operating parameter in a second position thereof, and the controller reads out the number of times of power input or the number of times of reading the operating parameter from the nonvolatile memory part when power is input to the volatile memory part or when the operating parameter is read out, and the controller writes back the number of times of power input or the number of times of reading the operating parameter into the second position of the nonvolatile memory part after incrementing the number of times of power input or the number of times of reading the operating parameter.