Aporc02 is a Power-on-Reset circuit with hysteresis. Reset signals are generated on both the
rising and falling edge of the supply voltage. During power-on, POR output follows the supply
voltage as long as it is below the high threshold. When the high threshold voltage is reached, the
POR signal turns low. A delay of a few microseconds is provided to allow the supply voltage to
stabilize. During power-off, the POR output turns high at reaching the low threshold voltage
without any delay. An inverted PORB signal is also provided
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