MEMORY SYSTEM

摘要

According to one embodiment, a memory system comprises a nonvolatile memory, a first volatile memory which stores management information to manage the nonvolatile memory, a controller which controls operations of the nonvolatile memory and the first volatile memory, and a power supply circuit which makes power supplied to part of the first volatile memory zero in accordance with a data capacity of the management information in response to a request from the controller.

主权项

1. A memory system comprising:
a NAND flash memory; a first volatile memory which stores address management information for making a logical address assigned to a host and a physical address of the NAND flash memory correspondent with each other; a controller which includes a second volatile memory and sends an operation request to the NAND flash memory and the first volatile memory to control the NAND flash memory and the first volatile memory; and a power supply circuit electrically connected to the host through a power supply connector to receive power from the host through the power supply connector, the power supply circuit making power, which is supplied to part of the first volatile memory in accordance with a data capacity of the address management information stored in firmware in the controller in response to the operation request from the controller, to zero, and the power supply circuit making power, which is supplied to the second volatile memory, to zero.