Quite a few microcontrollers can either optionally run with a "narrower" external data bus, or have different versions with different external data bus widths.
More correctly 'micro-processors', it's pretty rare for a micro-controller to have an external data bus.
As you pointed out, the 68000 was a classic example - as I recall the Sinclair computer (who's name escapes me?) used the 8 bit version, and the Commodore Amiga used the 16 bit version.
Ron, that's the ZX81. After that was released the ZX Spectrum also Z80 based and then the QL(Quantum Leap) was released which had a 68000 in it - I think it was actually a 68008. I'm starting to get vague memories of working on a QL!!
Ron, that's the ZX81. After that was released the ZX Spectrum also Z80 based and then the QL(Quantum Leap) was released which had a 68000 in it - I think it was actually a 68008. I'm starting to get vague memories of working on a QL!!