Memory system
AssigneeKabushiki Kaisha Toshiba
InventorNaoki KIMURA
Life of this patent
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Abstract
According to one embodiment, a memory system includes a volatile memory, a power supply circuit, and a controller. The power supply circuit includes a first power supply path in which power supplied from a host device is supplied to the volatile memory, a second, power supply path in which the power is supplied from the internal power supply to the volatile memory, and a switching device that switches between the first power supply path and the second power supply path. In response to an instruction for a transition to a low power consumption mode received from the host device, the controller outputs, to the switching device, an instruction to switch the power supply circuit from the first power supply path to the second power supply path.
Claims20
A memory system comprising:
- a non-volatile memory;
- a volatile memory that temporarily stores data to be written into the non-volatile memory or data read from the non-volatile memory;
- an internal power supply;
- a power supply circuit that includes a first power supply path in which power supplied from a host device is supplied to the volatile memory, a second power supply path in which the power is supplied from the internal power supply to the volatile memory, and a switching device that switches between the first power supply path and the second power supply path;
- and
- a controller that, in response to an instruction for a transition to a low power consumption mode received from the host device, outputs, to the switching device, an instruction to switch the power supply circuit from the first power supply path to the second power supply path.
A memory system comprising:
- a non-volatile memory;
- a volatile memory that temporarily stores data to be written into the non-volatile memory or data read from the non-volatile memory;
- an internal power supply;
- a power supply circuit that includes a first power supply path in which power supplied from a host device is supplied to the volatile memory, a second power supply path in which the power is supplied from the internal power supply to the volatile memory, and a switching device that switches between the first power supply path and the second power supply path;
- and
- a controller that, when power supply is cut off, outputs, to the switching device, an instruction to switch the power supply circuit from the first power supply path to the second power supply path, and does not copy the data stored in the volatile memory to the non-volatile memory.
Dependencies are inferred from the claim text.