Embodiments relate to an ultra-low-power, high-voltage integrated circuit (IC) that also has high electromagnetic compatibility (EMC). Embodiments address the desire for an ultra-low-power, high-voltage IC that also has high EMC and comprise a high-voltage EMC protection circuit with normal current consumption coupled to an ultra-low-power, low-voltage oscillator that controls a sleep/wake, or duty, cycle of a high-voltage circuit.