ATMega328

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I'm looking for a vendor for the ATMega328. I've noticed that neither Digikey nor Mouser carry this MCU. Anyone know who carries these? Are these just not selling well?

Thanks.

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They are probably selling too well. IIRC digikey had some tqfp types a while ago but no stock now. I'm trying to get some in PDIP but may have to wait a few months. :(

John Samperi

Ampertronics Pty. Ltd.

www.ampertronics.com.au

* Electronic Design * Custom Products * Contract Assembly

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Well, I hope it's because they are selling well cause they seem like a great little MCU - perfect for my project. I'm looking for the 32 pin TQFP version.

BTW, what's the difference between the P version and the non-P version?

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Well I'll be...just found out that Farnell has some in stock in the UK of the PDIPs.

John Samperi

Ampertronics Pty. Ltd.

www.ampertronics.com.au

* Electronic Design * Custom Products * Contract Assembly

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Out of stock on the TQFPs. Forgot to mention I'm in the USA. No one I've checked has the TQFP.

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Tweedle_Dee wrote:
BTW, what's the difference between the P version and the non-P version?

There exist no ATmega328, only the ATmega328P exist.

Thus you found no vendor for the ATmega328.

Peter

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Quote:

BTW, what's the difference between the P version and the non-P version?

P=Picopower

The Picopower AVRs are on a smaller fab with the dies shrunk and some additional power control stuff added. The 328 is the most recent member of the 48/88/168 family. They moved from 48/88/168 to 48P/88P/168P a while back and now those have moved to 48PA/88PA/168PA where "A" denotes no functional change but further power requirement reductions (a further die shrink presumably?). So maybe the latest "in stock" model of the 328 is actually 328PA. If not PA then certainly P.

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Given the DigiKey and Mouser mentions, I'll assume US. So go to Atmel's site and do a US Distributor Inventory Check.
http://www.atmel.com/contacts/di...

Atmel ATMEGA328 Distributor Inventory Check
Device 	Distributor 	Country 	Stock 	Date 	Buy
  No parts were found.

Not what you wanted to hear. Then go to Octopart and FindChips, and similar news. Only one searched vendor with a small stock of MLF.

You can put lipstick on a pig, but it is still a pig.

I've never met a pig I didn't like, as long as you have some salt and pepper.

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Okay, thanks. I may have to go with the ATMega324 then. The ATMega328 is just so perfect for my project...

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DigiKey has 1600+ of the ATmega168 that is in all ways save memory, a drop in replacement for the ATmega328. If you are at a prototyping stage you could use this to test all the pieces until the big guy gets back in stock.

Smiley

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Actually, that is exactly what I did. I'm using the 168 right now but I think I'll be a little short on memory for the final product.

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Actually, both DK and Mouser carry the ATMega328P, they're just both out of stock.

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js wrote:
I'm trying to get some in PDIP but may have to wait a few months.
I see that Newark has 77 in stock at the moment. They are a bit more expensive in quantity than at Digi-Key and Mouser but if you need them, they're there.

Don Kinzer
ZBasic Microcontrollers
http://www.zbasic.net

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rpmsales wrote:
Actually, both DK and Mouser carry the ATMega328P, they're just both out of stock.

I mispoke. You're correct, but they haven't had any stock for the last 3 months or more.

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Just out of curiosity, have you added the libm file to your project? This will save you memory.

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What is the libm file? I am using WinAVR gcc with no floating point calculations. I haven't even begun to think about memory optimizations yet. So, it's possible the ATMega168 will be enough. But if I err, I want it to be by having too much memory, not the other way around.

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Well I'll be darned, Digikey wrote back that they have 309 of the TQFPs in stock and updated the website accordingly. They now have 307 in stock...