I tested on MPC5643L EVB and found that the MCU can boot without applying VDD_HV_ADR.
But it get stuck at the following code:
//ME_GS Wait for external osc to stabilize.
Even I applied 5V to VDD_HV_ADR at this moment, the software was still stuck here.
Then I reset the MCU and it can run normally and complete all clock initialization.
Can you help explain the above boot process? Why would I be stuck at the crystal initialization?
And customer's question is what's the max allowed delay between VDD_HV_ADR and other supplies for MCU to boot successfully at the very first time.