I'm designing a very fast tracking system based on the propeller. For the moment I use 5MHz external crystal and x16 PLL. There are a lot of FP calculations and I would like to speed up the system.
What is the actual tested internal clock of the propeller? By the specification it looks like I can connect an 80MHz external crystal, set the clock mode to XTAL3 + x16PLL and theoretically get an internal clock of 1.28GHz. Is that correct and allowed for the propeller?
If the answer is yes, what is the impact on current consumption and heat dissipation of the chip, does it need cooling?