In future tutorials we’ll expand the design to include all of the functionality shown in this block diagram.Ī block diagram should include a block for each core function, the interconnections between the various blocks, specified communication protocols, and any known voltage levels (input supply voltage, battery voltage, etc.). As I mentioned, for this first tutorial we’ll focus just on the microcontroller itself. With a system-level design the focus is on the higher level interconnectivity and functionality.īelow is the block diagram that we’ll be working from in this tutorial series. In engineering, a black box is an object which can be viewed in terms of its inputs and outputs but without any knowledge of its internal workings. A system design treats each function as a black box Before getting into the details of the full schematic circuit design it’s always best to first focus on the big picture of the full system.ĭesigning the system consists mainly of two steps: creating a block diagram and selecting all of the critical components (microchips, sensors, displays, etc.). When developing a new circuit design the first step is the high-level system design (which I also call a preliminary design). STEP 3 – PCB Layout Design Step 1 – System / Preliminary Design I’ll break down the entire design process into three fundamental steps:
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