Semiconductor integrated circuit and electronic device

A semiconductor integrated circuit comprising:

• a plurality of terminals including a first input terminal, a second input terminal, and an output terminal;
• a first detection circuit configured to
• operate by a first input voltage, as a first power supply voltage, at the first input terminal,
• detect a drop in the first input voltage to assert a first signal;
• a second detection circuit configured to
• operate by a second input voltage, as a second power supply voltage, at the second input terminal,
• detect a drop in the second input voltage to assert a second signal;
• and
• an output circuit configured to
• monitor the first signal and the second signal, and
• output a reset signal from the output terminal, upon occurrence of a condition in which the first signal or the second signal is asserted,
• wherein the first detection circuit is configured to
• assert the first signal until the first input voltage decreases from a first detection voltage to a first operating voltage limit, and
• cause the first signal to enter an indeterminate state, upon occurrence of a condition in which the first input voltage decreases to be less than the first operating voltage limit,
• wherein the second detection circuit is configured to
• assert the second signal until the second input voltage decreases from a second detection voltage to a second operating voltage limit, and
• cause the second signal to enter an indeterminate state, upon occurrence of a condition in which the second input voltage decreases to be less than the second operating voltage limit, and
• wherein the first operating voltage limit is less than the second operating voltage limit.