Semiconductor integrated circuit
AssigneePanasonic Corporation
InventorsYoshifumi FUKUSHIMA, Shoji Sakamoto, Hiroyuki Sadakata, Kiyoto Ohta
Life of this patent
Estimating the term…
Abstract
A temperature sensing circuit activates a sensing signal when sensing that a temperature inside a semiconductor integrated circuit is lower than a predetermined temperature. A heat generation control circuit activates a heat generation control signal when the sensing signal is activated. When the heat generation control signal is activated, a current is generated inside a memory circuit to raise the temperature inside the semiconductor integrated circuit.
Claims15
A semiconductor integrated circuit to which a predetermined reset signal is supplied after start of power supply, the semiconductor integrated circuit comprising:
- a memory circuit;
- a logic circuit configured to output a memory control signal controlling operation of the memory circuit;
- a temperature sensing circuit configured to activate a sensing signal when sensing that a temperature inside the semiconductor integrated circuit is lower than a predetermined temperature;
- and
- a heat generation control circuit configured to activate a heat generation control signal when the sensing signal is activated while the reset signal is supplied, wherein
- a current is generated inside the memory circuit to raise the temperature inside the semiconductor integrated circuit when the heat generation control signal is activated.
A semiconductor integrated circuit comprising:
- a memory circuit being changeable between a standby state and an operating state;
- a logic circuit configured to control a state of the memory circuit;
- a temperature sensing circuit configured to activate a sensing signal when sensing that a temperature inside the semiconductor integrated circuit is lower than a predetermined temperature;
- and
- a heat generation control circuit configured to activate a heat generation control signal when the sensing signal is activated while the logic circuit controls the memory circuit to the standby state;
- wherein
- a current is generated inside the memory circuit to raise the temperature inside the semiconductor integrated circuit when the heat generation control signal is activated.
A semiconductor integrated circuit to which a predetermined reset signal is supplied after start of power supply, the semiconductor integrated circuit comprising:
- a memory circuit being changeable between a standby state and an operating state;
- a logic circuit configured to control a state of the memory circuit;
- a temperature sensing circuit configured to activate a sensing signal when sensing that a temperature inside the semiconductor integrated circuit is lower than a predetermined temperature;
- and
- a heat generation control circuit configured to activate a heat generation control signal when the sensing signal is activated while the reset signal is supplied, or while the logic circuit controls the memory circuit to the standby state, wherein
- a current is generated inside the memory circuit to raise the temperature inside the semiconductor integrated circuit when the heat generation control signal is activated.
A semiconductor integrated circuit to which a predetermined reset signal is supplied after start of power supply, the circuit comprising:
- a memory circuit being changeable between a standby state and an operating state;
- a logic circuit configured to control a state of the memory circuit;
- and
- a temperature sensing circuit configured to activate a sensing signal when sensing that a temperature inside the semiconductor integrated circuit is lower than a predetermined temperature, wherein
- an operating current increases when the sensing signal is activated while the reset signal is supplied, or while the logic circuit controls the memory circuit to the standby state.
Dependencies are inferred from the claim text.