The NMI interrupt is used to monitor the erroneous CLOCKFAIL condition in the system. If the software
does not respond to the enabled latched FAIL condition, the NMI watchdog triggers a reset after a
preprogrammed time interval. The CLOCKFAIL signal could also be used to activate the TZ5 signal to
drive the PWM pins into a high impedance state. Figure 3-12 shows the interrupt mechanisms involved.
The NMI watchdog is different from the watchdog described in Section 3.4.