4.4 HLVD Start-up Time

If the HLVD module is disabled to lower the device current consumption, the reference voltage used by the HLVD circuit will require time to become stable before a low or high-voltage condition can be reliably detected. This FVR start-up time (TFVRST), is typically 25 µs for the PIC18-Q10 devices. The HLVD interrupt flag is not enabled until TFVRST has expired and a stable reference voltage has been reached.