4 ms·
What’s the alternative? Is the Ne555 or is there better?
by fipple 8y ago
What’s the alternative? Is the Ne555 or is there better?
- xxs 8y agoArduino boards have pwm signal built in and tons of "other" functionality, on top of being programmable. You can get them below one dollar now.
- HeyLaughingBoy 8y agoThey are also much, much, much larger than a 3mm x 3mm VSSOP part.
- xxs 8y agoNot denying it. It has more I/O pins (pwm incl.) and it's easy to prototype, design/tune, though.
- mrob 8y agoDave Jones' EEVBlog recently posted a video on cheap microcontrollers (<0.03USD): https://www.youtube.com/watch?v=VYhAGnsnO7w https://www.youtube.com/watch?v=VYhAGnsnO7w Replacing a 555 timer is a very common job for this type of part. It will typically have an internal oscillator, so it won't need the additional components the 555 needs, reducing cost further. Even if you use something more expensive like an ATtiny (cut down version of the microcontroller found in Arduinos, so very easy to develop for) it might still be competitive because of the reduced parts count and board space.
- dbuder 8y agoAtmel stuff is way too expensive to replace jellybeans, same with any ARM stuff.
- yitchelle 8y agoHmm. The argument for using a microcontroller to replace a 555 is the increase complexity, and risk. There is code to be written, programming process install at manufacture etc. So it is not necessary cheaper if you at a level higher than the BOM cost.
- esmi 8y agoThere are a huge number of cheap timing parts. You can even get an entire waveform generator in a 10pin MSOP. http://www.analog.com/media/en/technical-documentation/data-sheets/ad9833.pdf http://www.analog.com/media/en/technical-documentation/data-... There are many better alternatives now. https://www.electronicdesign.com/boards/555-best-ic-ever-or-obsolete-anachronism https://www.electronicdesign.com/boards/555-best-ic-ever-or-...