Power-generation detection circuit, semiconductor device, electronic device, timepiece, power-generation detection method, and power consumption control method

摘要

There is provided a power-generation detection circuit which can detect a power-generation state by an AC voltage supplied from a power-generation device, and an electronic device having the power-generation detection circuit. A power-generation detection circuit constituted by a capacitor 3, and a MOS transistor 2, a resistor 4, and an inverter circuit 5 which controls charging of the capacitor by a generation voltage from a power-generation device 6. The MOS transistor is switched by an AC voltage from the power-generation device 6. The voltage of the capacitor is detected by the inverter circuit to perform power-generation detection.