IC will have an equivalent circuit, however microprocessor and microcontroller working through data logics and instructions? How it works internally with VLSI design circuit?
Human body could be the best example, where CPU the small and Memories the large brain, and Heart the clock, Hands & Legs are output ports, Eyes, Ears, Mouth, Nose and Skin are input ports and lungs with digestive system the power supply, Spinal cord the bidirectional control, data and address bus. For microprocessor block diagram with chip numbers and pin connections, could refer the figures of my papers, when all blocks are inbuilt in one chip, with inbuilt monitor programs, then it is called microcontroller …….