Patent ID: 11921600
Assignee: KIOXIA CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 8:
9. A memory system comprising:
a nonvolatile semiconductor memory;
a controller configured to control the nonvolatile semiconductor memory; and
a temperature sensor for acquiring an operating temperature of at least one of the nonvolatile semiconductor memory or the controller,
wherein the controller is configured to:
calculate a temperature parameter based on operating temperatures acquired by the temperature sensor over a period of time that starts after a power-on of the memory system, and
switch between a plurality of operation settings in which electric power consumptions of the memory system vary, based on the temperature parameter,

wherein the temperature parameter is an average operating temperature of the operating temperatures acquired by the temperature sensor over the period of time regardless of whether or not the operating temperatures satisfy a specific temperature, and the controller is further configured to:
control the nonvolatile semiconductor memory to operate according to a first operation setting during a first period in which the average operating temperature does not exceed a threshold temperature, and
control the nonvolatile semiconductor memory to operate according to a second operation setting during a second period in which the average operating temperature is equal to or higher than the threshold temperature, and

wherein an electric power consumption of the memory system in the second operation setting is smaller than the electric power consumption of the memory system in the first operation setting.