Agreed. Also, it really just is a micro-controller. From what I understand the internal ram and flash plus all the other special functions (SPI, UART, ADC) are

Agreed. Also, it really just is a micro-controller. From what I understand the internal ram and flash plus all the other special functions (SPI, UART, ADC) are what make a micro-controller a micro-controller while a MPU or CPU have data and addressing buses used to talk to external devices. Micro-controllers incorporate a bunch of common functions into them that a CPU or MPU would need to talk to an external device for (while micro-controllers tend to lack said external buses).