44.2 Features

The following are key features of the AC module:

  • Two individual comparators
  • Selectable propagation delay versus current consumption
  • Selectable hysteresis
    • 4-levels , Always ON
  • Analog comparator outputs available on pins
    • Asynchronous or synchronous
  • Flexible input selection:
    • Four pins selectable for positive or negative inputs
    • Ground (for zero crossing)
    • One dedicated 7-bit DAC for each comparator, enabling up to 128-level programmable VDD scaler
    • Extensions available to connect additional internal or external pins on each device
  • Interrupt generation on:
    • Rising or falling edge
    • Toggle
    • End of comparison
  • Window function interrupt generation on:
    • Signal above window
    • Signal inside window
    • Signal below window
    • Signal outside window
  • Event generation on:
    • Comparator output
    • Window function inside/outside window
  • Optional digital filter on comparator output
  • Low-power option
    • Single-shot support