For my product's blurb, it would be really great if I could find out how many transistors average MCU's have, as a comparison to something bigger, like a computer, or even a low-end x86 processor. The blurb is about the virtual challenges part of it which offloads rendering of 3D games to the Real World™ (augmented reality), so I'm comparing GPUs to Super OSD. It sounds a bit obtuse but it's fun and I think it's a cool metaphor.
I'm thinking of asking the manufacturers, but I suspect I'll just get "that's proprietary information" back. Some chips, especially those from Analog Devices and ONsemi, have "chip complexity" or "number of transistors" in the datasheet, but others don't. I'm wondering why they don't include this information, because you could hardly build another chip just by knowing the number of fets, and if you were really dedicated (and paid a lot), you could probably count them yourself with a microscope or an image of the die, or at the very least estimate them by knowing the die area and average feature size.
I'm interested in the AT32UC3B0512, dsPIC33FJ128GP802, dsPIC33FJ256GP506A, PIC24F64GA002 and PIC16F689, as well as some non-MCU's, like LMH1980, LM1881 and 24AA1025 (EEPROM.) But even if someone can hint towards a general number of transistors in their respective classes (AT32, dsPIC33F, PIC24F, PIC16F) it would be great!