Semiconductor device
AssigneeDenso Corporation
InventorTomoya KATSUKI
Life of this patent
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Abstract
A semiconductor device operates with electric power supplied from a direct-current power supply to an internal circuit in a state where a bypass capacitor is connected to a power supply terminal. The semiconductor device includes a load current control unit and a detection unit. The load current control unit changes an electric current supplied from the power supply terminal only in a predetermined operation period. The detection unit detects a voltage of the power supply terminal. The detection unit outputs a detection signal when the voltage is higher than a threshold upper limit in a case of being provided with the threshold upper limit. Alternatively, the detection unit outputs a detection signal when the voltage is lower than a threshold lower limit in a case of being provided with the threshold lower limit.
Claims10
A semiconductor device which operates with electric power supplied from a direct-current power supply to an internal circuit in a state where a bypass capacitor is connected to a power supply terminal, the semiconductor device comprising:
- a load current control unit changing an electric current supplied from the power supply terminal only in a predetermined operation period;
- and
- a detection unit detecting a voltage of the power supply terminal and outputting a detection signal when the voltage is lower than a threshold lower limit.
A semiconductor device which operates with electric power supplied from a direct-current power supply to an internal circuit in a state where a bypass capacitor is connected to a power supply terminal, the semiconductor device comprising:
- a load current control unit changing an electric current supplied from the power supply terminal only in a predetermined operation period;
- and
- a detection unit detecting a voltage of the power supply terminal and outputting a detection signal when the voltage is higher than a threshold upper limit.
Dependencies are inferred from the claim text.