[notsapiensatall]

Traditionally, the main difference was a full-featured MMU which allows virtual address spaces.

But these days, you have advanced 600MHz microcontrollers with simple GPUs, and full-featured CPUs which get used as an embedded platform. You can even build a Linux kernel for no-MMU platforms.

It's a fuzzy line.

[Trex_Egg]

Could you please name some of the microcontrollers that you are referring to?

[sifar]

check out NXP i.MX RT1060