So is normal (like I thought).
At first before to read the datasheet eletrical information I touched my little 7805 that use for the 5V power(I know is not the best solution of all, I'm working on it) and it was too hot. Immidantly I thought that the chip sould be shorted but that fortunatly I read the datasheet!
Best regards Alberto Vaudagna.
Once again, please read the datasheet carefully!
In the SCN68000 datasheet, a max. current of 1.5A is mentionend in a footnote (p51/59), but that's obviously peak current, not average supply current.
On the next page, an average Ptot of 1.3-1.8W is specified, depending on T (ambient) and clock freq.
As the package thermal resistance is around 40K/W, a P dissipation of 3W or more would destroy the chip over time by overheating. Malfunction will happen from about 2W onwards.
I don't know, where you folks have read about (average) 7.5W dissipation, but all the datasheets definitely tell a different story.
There's also the question, if the processor itself consumes the majority of the current, or the rest of the circuitry.
Therefore, Please measure, how hot the processor case gets.. if its over 60..70°C, something might be wrong probably.
Frank