Semiconductor device and method of controlling semiconductor device
AssigneeFujitsu Limited
InventorYukihito KAWABE
Life of this patent
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Abstract
A semiconductor device includes an oscillator that oscillates to generate a clock, a circuit that operates based on the clock generated by the oscillator, a temperature detector that detects the temperature of the circuit, a power detector that acquires, as a monitored power value, power consumed by the circuit, and a frequency controller that controls, when the temperature detected by the temperature detector exceeds a temperature threshold, the frequency of the clock of the oscillator so that the monitored power value matches target power that causes the temperature of the circuit to converge to a temperature higher than the temperature threshold.
Claims4
A semiconductor device comprising:
- an oscillator that oscillates to generate a clock;
- a circuit that operates based on the clock generated by the oscillator;
- a temperature detector that detects the temperature of the circuit;
- a power detector that acquires, as a monitored power value, power consumed by the circuit;
- and
- a frequency controller that controls, when the temperature detected by the temperature detector exceeds a temperature threshold, the frequency of the clock of the oscillator so that the monitored power value matches target power that causes the temperature of the circuit to converge to a temperature higher than the temperature threshold.
A method of controlling a semiconductor device including an oscillator that oscillates to generate a clock and a circuit that operates based on the clock generated by the clock, comprising:
- causing a temperature detector included in the semiconductor device to detect the temperature of the circuit;
- causing a power detector included in the semiconductor device to acquire, as a monitored power value, power consumed by the circuit;
- and
- causing, when the temperature detected by the temperature detector exceeds a temperature threshold, a frequency controller included in the semiconductor device to control the frequency of the clock of the oscillator so that the monitored power value matches target power that causes the temperature of the circuit to converge to a temperature higher than the temperature threshold.
Dependencies are inferred from the claim text.