Toshiba Memory Corporation

Yuusuke Nosaka

Masanobu Shirakawa

Yoshihisa Kojima

Hiroshi Sukegawa

Kiyotaka Iwasaki

A memory system includes a memory controller comprising n (where n&#x3e;2) first data input/output terminals, a first semiconductor chip comprising n second data input/output terminals, each of the second data input/output terminals being connected to a respective one of the first data input/output terminals, and a second semiconductor chip comprising n third data input/output terminals, each of the third data input/output terminals being connected to a respective one of the first data input/output terminals. When a first request signal is output from the memory controller, status data of the first semiconductor chip is output from a first of the second data input/output terminals that is connected to a first of the first data input/output terminals, and status data of the second semiconductor chip is output from a second of the third data input/output terminals that is connected to a second of the first data input/output terminals.

Memory system

A memory device includes a nonvolatile memory unit and a memory controller. The memory controller is configured to generate a plurality of commands in accordance with requests received from a host and store the commands in a buffer, set a priority level to each of the commands based on contents thereof, and transfer the commands having a first priority level from the buffer to the nonvolatile memory unit during a first time period, and the commands having a second priority level lower than the first priority level from the buffer to the nonvolatile memory unit during a second time period. The first time period and the second time period are fixed recurring time periods, and the second time period begins after expiration of the first time period.

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Inagi Tokyo, Japan

Yuusuke Nosaka