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2

Generally, microcontroller vendors put a range of memory in their devices that is suitable for typical applications. So, if you only need a few I/O pins and one SPI in a small footprint device, you will be unlikely to find anything that ships with 500 kBytes of Flash and 64 kBytes of RAM. With larger devices, which are closer to SoC packages, even the ...


3

If only it were possible to code your embedded system first and then build the hardware. That would make everyone's life easier. Unfortunately, that also means your deadlines are out the window. Typically the hardware has to be designed long before the software is done because hardware parts frequently have long lead times. Thus, embedded sw developers will ...


0

No you can't, not without significant alterations to the circuit diagram. For instance, JFETs are like triode valves and require a negative control voltage on the gate with respect to source. This is not the case with a BC547 - it requires a positive base control voltage with respect to its emitter. Why don't you just design a colpitts oscillator from ...


11

Of course, for a single homemade prototype it may be a good recommendation to start with the most powerful of all compatible micros and scale down afterwards. However if you want to win a quote, you have to tell your customer a price before you have the money to implement anything. Therefore, good practice is to write down some kind of specification ...


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Personally for hobby projects I tend to use the most powerful microcontroller in the family with the right footprint. I then develop the PCB, write some code and produce a prototype. This has the advantage that I know the small number of microcontrollers fairly well, so I can rapidly prototype without having to read a whole datasheet. I also have breakout ...


0

You should be able to modulate the 400kHz up and down a little bit. This will spread the spectrum of the noise your 6ph converter produces. This would be a standard approach. If you want this verifying for your precise set-up then circuits are needed.


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There are few companies which make pogo pins for such small pitch. you can use a 1.5mm crimp housing connector as a quick hack, slide the pins through it and you have a ready made 1.5mm pitch test jig. However, a better approach would be to arrange the pins in a zigzag pattern (might not be possible in your case). Here is a 1.27mm pitch pogo: ...


1

There use to be all these electronics "cookbooks" you can order them cheap on line. Opamp cookbook Cmos Cookbook TTL cookbook IC timer cookbook (I'm trying to think of others..)


3

I would get a copy of The Art of Electronics. It's considered by many as the "bible" of electronics design. It's an old book but to this day it's a really good reference.


1

Books and lectures will tell you that there are two ways: bottom-up and top-down. In my option, beginners should start top-down, because you know what you want (the system) and you can divide it into modules like Dave described. If you gathered some experience you will probabily have some kind of a module collection or your design goal is not to build a ...


0

Output F needs to be active for all odd numbers except 7. So... LSB to mux 20 input, mux outputs '0' for even numbers and '1' for odd numbers. AND gate detects 7, output to mux 21 input forces it to output '3' instead of '1'.


4

I generally take a top-down design approach, and I start by drawing a block diagram that shows the interfaces among the top-level blocks. I then draw additional diagrams that represent the implementations of the top-level blocks in terms of lower-level blocks. This hierarchy of block diagrams translates pretty much directly to the hierarchy of the HDL ...



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