Circuit Device And Real-Time Clock Device

A circuit device comprising:

• a first power supply line to which a first power supply voltage is supplied;
• a second power supply line to which a second power supply voltage is supplied;
• a third power supply line;
• a power supply circuit that is coupled to the first power supply line and the second power supply line, performs selection of the first power supply voltage or the second power supply voltage, and outputs a third power supply voltage based on the selected power supply voltage to the third power supply line;
• a predetermined circuit that is operated by the third power supply voltage;
• a first power-on reset circuit that is coupled to the first power supply line and outputs a first power-on reset signal based on the first power supply voltage;
• a second power-on reset circuit that is coupled to the third power supply line and outputs a second power-on reset signal based on the third power supply voltage;
• and
• a reset control circuit that sets a third power-on reset signal output to at least a part of the predetermined circuit to a reset release level when the first power-on reset signal and the second power-on reset signal become a reset release level.