Abstract: According to one embodiment, a memory device includes a nonvolatile memory which stores data in units of a write unit includes cells, and a controller which controls the memory and partitions memory space of the memory. In response to a request to write write-data to the memory from a host, the controller requests the host to transmit a segment of the write-data with a specified size. The write-data segment has a size of an integral multiple of a size determined to allow for a set of the write-data segment and corresponding additional data to be the largest while smaller than the write unit. Before completion of processing a first command which requests access to a first partition, the controller accepts a second command which requests access to a second partition.

Abstract: According to one embodiment, a memory device includes a nonvolatile memory in which data write or data read is executed in units of a plurality of cells, and a controller configured to control the memory and to manage a memory space of the memory by dividing the memory space into a plurality of partitions.

Abstract: According to one embodiment, a memory device includes a nonvolatile memory including a plurality of memory cells, and a controller configured to control the nonvolatile memory. At a time of a boot operation, when a request for initialization of the memory device is issued, the controller does not return a response to the request until completion of the initialization, and the controller returns a response to the request when the initialization is completed.

Abstract: According to one embodiment, a memory device includes a nonvolatile memory which stores data in units of a write unit includes cells, and a controller which controls the memory and partitions memory space of the memory. In response to a request to write write-data to the memory from a host, the controller requests the host to transmit a segment of the write-data with a specified size. The write-data segment has a size of an integral multiple of a size determined to allow for a set of the write-data segment and corresponding additional data to be the largest while smaller than the write unit. Before completion of processing a first command which requests access to a first partition, the controller accepts a second command which requests access to a second partition.

Abstract: According to one embodiment, a memory device includes a nonvolatile memory in which data write or data read is executed in units of a plurality of cells, and a controller configured to control the memory and to manage a memory space of the memory by dividing the memory space into a plurality of partitions.

Abstract: According to one embodiment, a memory device includes a nonvolatile memory including a plurality of memory cells, and a controller configured to control the nonvolatile memory. At a time of a boot operation, when a request for initialization of the memory device is issued, the controller does not return a response to the request until completion of the initialization, and the controller returns a response to the request when the initialization is completed.

Abstract: According to one embodiment, a memory device includes a nonvolatile memory, a command storage module in which a command is stored, and a controller which receives the command from a host device, stores the command in the command storage module, executes the command stored in the command storage module, and after having completed the execution of the command, transmits, to the host device, a first signal reporting the completion of the execution of the command.