Memory system, power supply control circuit, and control method
AssigneeToshiba Memory Corporation
InventorHajime Matsumoto
Life of this patent
Estimating the term…
Abstract
According to one embodiment, a memory system includes first, second, and third ICs. The first IC includes a non-volatile semiconductor memory. The second IC includes a controller configured to control the non-volatile semiconductor memory. The third IC is configured to receive an external first power supply voltage and generate a second power supply voltage. The third IC is connected to the second IC via an interface according to a serial communication standard. A temperature sensor element is connected to the third IC.
Claims15
A memory system comprising:
- a substrate;
- a first integrated circuit provided on the substrate and comprising a non-volatile semiconductor memory;
- a second integrated circuit provided on the substrate and comprising a controller configured to control the non-volatile semiconductor memory;
- a third integrated circuit provided on the substrate and configured to receive a first power supply voltage supplied from an outside of the third integrated circuit and generate a second power supply voltage having a value different from a value of the first power supply voltage, wherein the third integrated circuit is connected to the second integrated circuit via an interface according to a serial communication standard;
- and
- a temperature sensor element provided on the substrate and connected to the third integrated circuit.
A power supply control circuit integrated and comprising a terminal to which a temperature sensor element is externally connected, the power supply control circuit comprising:
- a power supply circuit configured to convert an external power supply voltage having a first value into an internal power supply voltage having a second value;
- an analog to digital converter configured to convert an analog temperature signal supplied from the temperature sensor element into digital temperature data;
- and
- a communication circuit configured to receive, via an interface according to a serial communication standard, a control signal to the power supply circuit supplied from an outside of the power supply control circuit and transmit, via the interface according to the serial communication standard, the temperature data to the outside of the power supply control circuit.
A control method of a memory system comprising a substrate;
- a first integrated circuit provided on the substrate and comprising a non-volatile semiconductor memory;
- a second integrated circuit provided on the substrate and comprising a controller configured to control the non-volatile semiconductor memory;
- a third integrated circuit provided on the substrate and configured to receive a first power supply voltage supplied from an outside of the third integrated circuit and generate a second power supply voltage having a value different from a value of the first power supply voltage, wherein the third integrated circuit is connected to the second integrated circuit via an interface according to a serial communication standard;
- and a temperature sensor element provided on the substrate and connected to the third integrated circuit, the control method comprising:
- requesting, by the second integrated circuit, the third integrated circuit to transmit temperature data sensed by means of the temperature sensor element via the interface according to the serial communication standard;
- transmitting, by the third integrated circuit, the temperature data;
- and
- transmitting, by the second integrated circuit, a voltage adjusting signal in order to adjust a value of the second power supply voltage generated by the third integrated circuit based at least in part on the temperature data transmitted from the third integrated circuit via the interface according to the serial communication standard.
Dependencies are inferred from the claim text.