want to design a target for CW308. Target MCU will be STM32L552VET6 as it supports ARMv8-M w TZ.
I know there is already is a Cortex-M33 target (NXP LPC55S69), but I want to stick with this one.
Long story short, the goal is to generate reliable glitches.
But as there is also some built in crypto etc., I wanted to keep the opportunity for doing SCA later on.
When I was going to place the shunt, I found that the Vcore is exclusively supplied via an internal regulator, that cannot be turned off. The regulator gets supplied by VDD, which also powers I/O and some more stuff. This is why I expect a lots of noise here.
What would you do in this case?
Have you encountered something similar before?
Would be kind of sad to manufacture a target only for glitching and afterwards realize that you could have both.