Semiconductor integrated circuit and system guaranteeing proper operation under low-temperature condition
First Claim
Patent Images
1. A semiconductor integrated circuit, comprising:
- a measurement circuit configured to detect a measuring quantity dependent on temperature; and
a heating circuit configured to generate heat in response to a detection, by the measurement circuit, of the measuring quantity indicating that the temperature is lower than a predetermined level.
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Abstract
A semiconductor integrated circuit includes a measurement circuit configured to detect a measuring quantity dependent on temperature, and a heating circuit configured to generate heat in response to a detection, by the measurement circuit, of the measuring quantity indicating that the temperature is lower than a predetermined level.
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Citations
10 Claims
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1. A semiconductor integrated circuit, comprising:
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a measurement circuit configured to detect a measuring quantity dependent on temperature; and a heating circuit configured to generate heat in response to a detection, by the measurement circuit, of the measuring quantity indicating that the temperature is lower than a predetermined level. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A circuit system, comprising:
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a first semiconductor integrated circuit including a first measurement circuit configured to detect a measuring quantity dependent on first temperature and a first heating circuit configured to generate heat in response to a detection, by the first measurement circuit, of the measuring quantity indicating that the first temperature is lower than a predetermined level; and a second semiconductor integrated circuit including a second measurement circuit configured to detect a measuring quantity dependent on second temperature and a second heating circuit configured to generate heat in response to a detection, by the second measurement circuit, of the measuring quantity indicating that the second temperature is lower than the predetermined level, wherein a core circuit of the first semiconductor integrated circuit and a core circuit of the second semiconductor integrated circuit are configured to start operating in response to simultaneous detections, by the first measurement circuit and the second measurement circuit, of measuring quantities indicating that the first temperature is higher than the predetermined level and that the second temperature is higher than the predetermined level.
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8. A circuit system, comprising:
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a first semiconductor integrated circuit; a second semiconductor integrated circuit; a first measurement circuit configured to measure a temperature of the first semiconductor integrated circuit; a second measurement circuit configured to measure a temperature of the second semiconductor integrated circuit; a heating device configured to heat the first semiconductor integrated circuit in response to a detection by the first measurement circuit that the temperature of the first semiconductor integrated circuit is lower than a predetermined level; and a heating device configured to heat the second semiconductor integrated circuit in response to a detection by the second measurement circuit that the temperature of the second semiconductor integrated circuit is lower than the predetermined level, wherein the first semiconductor integrated circuit and the second semiconductor integrated circuit are configured to start operating in response to simultaneous detections by the first measurement circuit and the second measurement circuit that the temperature of the first semiconductor integrated circuit is higher than the predetermined level and that the temperature of the second semiconductor integrated circuit is higher than the predetermined level. - View Dependent Claims (9)
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10. A method of driving a semiconductor integrated circuit, comprising:
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detecting a measuring quantity dependent on a temperature of a semiconductor integrated circuit; heating the semiconductor integrated circuit in response to a detection of the measuring quantity indicating that the temperature is lower than a predetermined level; stopping heating the semiconductor integrated circuit in response to a detection of the measuring quantity indicating that the temperature is higher than the predetermined level; and causing the semiconductor integrated circuit to start operating in response to a detection of the measuring quantity indicating that the temperature is higher than the predetermined level.
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Specification