Information processing device and semiconductor device

A semiconductor device that is connected to one or more peripheral devices, the device comprising:

• a processor configured to be able to change between a first state, in which a command is executed, and a second state, in which an interrupt is awaited;
• and
• a state controller configured to:
• switch the semiconductor device to a third state when the processor enters the second state and if an operation for data transfer is being performed between at least one of the peripheral devices and the memory device, the third state being a state in which power consumption is lower as compared to the first state;
• and
• switch the semiconductor device to a fourth state if the operation for data transfer is not being performed between any of the peripheral devices and the memory device, the fourth state being a state in which power consumption is lower as compared to the third state.

An information processing device comprising:

• a memory device;
• one or more peripheral devices;
• a processor configured to be able to change between a first state, in which a command is executed, and a second state, in which an interrupt is awaited;
• and
• a state controller configured to, when the processor enters the second state, perform control to lower power consumption of the information processing device if an operation for data transfer is not being performed between any of the peripheral devices and the memory device.