Memory device, and information-processing device

A memory device connected to a host device having a host-side storage device, the memory device comprising:

• a first non-volatile memory;
• a volatile memory that stores data written to or read from the first non-volatile memory and stores management information which manages a storage location of the data stored in the first non-volatile memory;
• a controller that transfers data between the first non-volatile memory and the volatile memory based on an instruction from the host device;
• and
• a second non-volatile memory that stores sleep state support information indicating whether the memory device supports a sleep state, the sleep state being a state in which the power supplies for the first non-volatile memory, the volatile memory, the controller, and the second non-volatile memory are shut off and information stored in the volatile memory is saved to the host-side storage device,
• wherein the controller:
• carries out the transition to the sleep state depending on a sleep instruction from the host device;
• and
• upon receiving a return instruction from the host device, refers to the sleep state support information in the second non-volatile memory and when the sleep state not supported, carries out startup processing of the first non-volatile memory without waiting for link layer establishment processing relative to the host device.

An information-processing device comprising:

• a host device having a host-side storage device;
• and
• a memory device connected to the host device, wherein
• the memory device includes:
• a non-volatile memory;
• a volatile memory that stores data written to or read from the non-volatile memory and stores management information which manages a storage location of the data stored in the non-volatile memory;
• and
• a controller that transfers data between the non-volatile memory and the volatile memory based on an instruction from the host device, and
• the controller:
• carries out the transition to two different sleep states depending on a sleep instruction from the host device;
• saves sleep state information indicating the sleep state after the transition to the host -side storage device;
• and
• carries out, upon receiving a return instruction from the host device, return processing in accordance with the sleep state information stored in the host-side storage device.