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1. Microprocessors and microcontrollers
In this section, we first explain the basic operation of a microprocessor system, then present the architecture of the Motorola 68331 microcontroller as an example.
1.1 Minimum computer system
From a hardware point of view, a minimal computer system consists of a processor, memory and I/O (figure 1 ).
The task of the processor (Figure 3) is to fetch instructions from memory, decode them and execute them. To this end, it contains an ordinal counter pointing to the memory address where the next instruction to be fetched and executed is located. It also contains an instruction register for storing the instruction code (opcode) being fetched...
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Microprocessors and microcontrollers
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