Can the "unknown" turn-on state of registers in digital circuit be used as seed for random number sequence?
Though the imbalance of transistor conductivity, and the imbalance of metal_metal capacitance and metal_active capacitance, and imbalance of load capacitance, are what determine the powerup &quot;state&quot;, these imbalances are very consistent. You will not get much randomness.
That is bad.
If you want to explore randomness, then design a clocked Comparator that initially resides in Metastability, and disrupt the Metastability with random noise from a broadband amplifier, and then CLOCK the Comparator from Track mode into Hold mode.