Mechanism & thresholds: If VDD drops below
VPOR_FALL for a time greater than tPOR, then a
power on reset occurs that hard resets the device.
Action:
nFAULT pin is de-asserted
OUT is Hi-Z
IPROPI pin is Hi-Z.
When VDD recovers above the VPOR_RISE
level, the device goes through a wake-up initialization and nFAULT
pin is asserted low to notify the user on this reset (Refer Wake-up transients).
Fault reaction: Always retry, retry time depends on the external supply condition to initiate a device wake-up
POR fault is cleared only if VM voltage is above the under voltage threshold
level