A power-on reset circuit. The power-on reset circuit includes a switch, a current source coupled between a first potential and a switch first contact; a resistive device having a resistive-device first contact coupled to the first potential; a first module coupled between a second potential and a switch second contact; a second module coupled between the second potential and resistive-device second contact; and an inverter having an inverter input coupled to the resistive-device second contact. Current through the second module mirrors current through the first module. If a first mirrored potential of the second potential present on a switch control contact is greater than a preselected value, the switch first contact is coupled to the switch second contact. Otherwise, the switch first contact is decoupled from the switch second contact.

 
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