I am using stm32l443 mcu. When the processor is locked, the processor does not work even though I trigger it with an external wdg. Everything is correct in the circuit design. If the NRSTe is triggered while the system is running, it resets.

[Tesla DeLorean]

What causes the external disturbance to make it latch-up. Do you have adequate isolation?

[MM..1]

BOOT0 pin ? External clock ?

[OŞeno.1]

It is used in a high voltage generating circuit that ignites. It is expected to be unlocked, but we expect it to come out of the lock with NRST. NRST is triggered by wdg.

[OŞeno.1]

BOOT0 pin connected gnd. HSE oscillator

[OŞeno.1]