Post by thread:PIC vs AVR ?

I know, this sort of questions sometime creates religious-war like endless discussions. But I would like to learn from your experience on PIC and AVR micros. Why/when/where PIC and Why/when/where AVR? Their pluses and minuses? Thanks. spam_OUTalbertgoodwillTakeThisOuTyahoo.com __________________________________________________ Do You Yahoo!? Talk to your friends online with Yahoo! Messenger. http://im.yahoo.com

Well, most of it has to do with industry dynamics and speed. The AVR runs 1 instruction per clock, whereas the PIC runs 1 instruction per 4 clocks, this being offset by the AVR's speed limitation of 10MHz (10MIPS) (the PIC can be 5MIPS at 20MHz, some do 30MHz) and the newer line of pics (18cxxx) which do 1 instruction per clock and have a limit of 10 mips at 10MHz. The AVR is not as easy (it is easy, but not as easy) to get ahold of for the hobbyist, and does not have the wide device selection PIC has. Lastly, the OTP PIC parts are much less expensive than a comparable AVR part, which makes the PIC very attractive to those who need to buy in quantity. If the PIC can do the job, and you need a million of them you can go cheaper witht the PIC than the AVR. This is one reason why PICs are gaining market share more quickly than AVR as well, Microchip can make more of them, and thus can lower the prices due to bulk manufacturing. Shuttling a few off into the hobbyist market for a little more is easy. So, use AVR if you need raw speed ( > 5MIPS, since the 18c line is still expensive, and not yet flash), and use PIC for just about everything else... ;-) There are other reasons, but that is pretty much how I do things. -Adam (And no, I didn't forget scenix (wrt speed), but the question wasn't about scenix) Albert Goodwill wrote: {Quote hidden}> > I know, this sort of questions sometime creates religious-war like endless > discussions. > But I would like to learn from your experience on PIC and AVR micros. > > Why/when/where PIC and Why/when/where AVR? > Their pluses and minuses? > > Thanks. > > .....albertgoodwillKILLspam@spam@yahoo.com > > __________________________________________________ > Do You Yahoo!? > Talk to your friends online with Yahoo! Messenger. > http://im.yahoo.com

On 15 Jun 2000, at 14:27, Albert Goodwill wrote: > I know, this sort of questions sometime creates religious-war like > endless discussions. But I would like to learn from your experience on > PIC and AVR micros. > > Why/when/where PIC and Why/when/where AVR? > Their pluses and minuses? > > Thanks. > ___________________________________________ > Do You Yahoo!? Actually no. I only whoop and holler when I have struck a vein of pure gold. I've only Ya hooed a few times lately as I like to keep rubbish down. > Talk to your friends online with Yahoo! Messenger. No thanks, I dont need yahoo messenger for communication. My friends have found it unneccesary as well. > http://im.yahoo.com No thanks After jumping through all your hoops, I would say that atmel is a great chip. There are some disadvantages in terms of support and so forth. Also, you need to hook into atmel in a big way to try it. There are no onesy twosy suppliers although Dontronics is apparently trying to change that in Australia, and will apparently send you a chip without ripping you off for postage or min orders. Many have found the atmel development tools flakey. I don't know about silicon bugs, but they are probably somewhere between microchip and scenix in that regard. If you need the advantages that atmel offers or scenix thats the way to go. I am slowly developing that capability without spending what they wish us to. But if you want stability and well defined operation, and a microchip product will work for the application, you are much better off with microchip. If you wish to try an atmel chip, currently the only source I know of without being ripped off is Dontronics in Australia. There are no sources of Scenix chips without being ripped off.