Xmega sampling?

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Hi,

I'd like to order some samples of an xmega chip.

Which ones are available?

(I tried the devices tab of this forum, but that's outdated i.e. the commercial available atmega328p is not included).

Cheers,

Nick

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It's currently mainly the 128A1 isn't it? But Atmel's argument is that they are all compatible so get working on your code for whichever model is available now and you can later down-size/up-size and up/down-feature when the other models become available.

One of the limiting factors for a lot of people right now actually seems not to be the chips themselves but the availability of the STK600 routing card that you also need. However now that the AVRISPmkII has been updated to do PDI you should be able to program them cheaper/easier but you'll have to mount them into your own design as dev cards are scarce (though see recent thread about a new Atmel dev board for them)

Cliff

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Quote:

One of the limiting factors for a lot of people right now actually seems not to be the chips themselves but the availability of the STK600 routing card that you also need.

Yes, I got caught in the trap. I did not get the routing card when they were in-stock, pending actual samples. Then when I got a few chip samples in mid-year, the routing card has been on backorder since. While there is a pending order receipt planned at both DigiKey and Mouser, the lead time is listed at 30 weeks.

Xmega revisited:
[ a good chronology: https://www.avrfreaks.net/index.p... ]

Well over a year ago the 'Freaks started to get Xmega fever. Pre-release info was dribbling out here and there, giving us feature lists and the family structure. First info in late 2006, indicating an early-2007 release date. Then the big one: end of February, 2008. Official announcement with all the associated fanfare. Samples "available now".

Six months later silicon rev. G samples started arriving into the sweaty palms of common folk. Ugly errata list, including basically non-functional EEPROM for regular work.

Finally, a November 2008 datasheet release indicates the rev. H silicon. EEPROM problem apparently gone, but [nearly?] all others remain.

===================

Y'all have heard my "available now" tweaks before. I'm really surprised at this one given the history of new AVR models over the years. Even Engineering Samples (E.S.) were usually fairly solid, and started appearing fairly soon after "release". The errata lists on production chips is typically quite short.

And that surprised me about the Xmega. There must have been some real problems somewhere--a year lag between first info and official announcement, then about another year (maybe) till we can get usable chips.

Surprising because the "tricky" parts:
-- running off flash at 32MHz
-- DMA
-- 12-bit A/D
-- DAC

and others are all part of the Atmel SAM7S series which has been solid for several years. I thought those subsystems would be able to be incorporated without major obstacles. (full disclosure: I'm certainly not a chip designer)

I'm sure Atmel would like to be selling the beasties. If they have to wait too long, will our fever subside? Will I have to look elsewhere or take a different approach for my 8-channel fast encoder project?

Disappointingly yours,

Lee

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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Cliff wrote:
One of the limiting factors for a lot of people right now actually seems not to be the chips themselves but the availability of the STK600 routing card that you also need.

:evil:

Speak for yourself fanboy! I've been trying to get samples of the 128A1 for the last month, with no joy. Atmel has been singularly unresponsive. Another supplier has said she may get some samples in on Christmas and at least promises me production volumes by March.

I have a *real live* project with a *real live* engineer doing beginning code on an ATmega2560 (it's what I had) because we don't have samples. I want to ship this product in March - it'll be hard to do without a few processors for my prototypes.

I can only guess that the take-over attempt has so rattled Atmel that they don't know which end is up (more colorful metaphors deleted).

Granted, our usage is low (maybe 50 processors a year) so no one is going to buy a boat with commissions from sales to us. Still, it would be nice to get responses to our requests.

So, WTF Atmel?!? Is this part in production or not?

:evil:

Sorry about that. Thanks, I feel better now. Really, you can take this strait jacket off now. :wink:

Stu

Edit 1: I have re-read Lee's post and I now feel a little better. We're making plans to use the ATmega2560 as a backup, along with the proper ADCs and DACs. I understand that Atmel is having problems (I've also worked on a Rev H part :oops:), but a simple message saying, "We're having problems producing this part" would have been nice.

Engineering seems to boil down to: Cheap. Fast. Good. Choose two. Sometimes choose only one.

Newbie? Be sure to read the thread Newbie? Start here!

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Quote:
a simple message saying, "We're having problems producing this part" would have been nice.
..may even scare off M/chip from buying them out...:?

John Samperi

Ampertronics Pty. Ltd.

www.ampertronics.com.au

* Electronic Design * Custom Products * Contract Assembly

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@Stu, let me know if you haven't received your samples, say, by January 10. Yes, the xmega128A1 (and x64A1) is in production.

The STK600 routing card situation should ease up very soon.

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Quote:

Yes, the xmega128A1 (and x64A1) is in production.

Wow--the rev. H? Looking at the errata list, I guess none could be considered killers, now that the EEPROM item has been removed.

https://www.avrfreaks.net/index.p...
had a mention of the bootloader non-functionality; that line is also gone.

So now maybe it will soon be real, real soon now. ;)

Quote:
The STK600 routing card situation should ease up very soon.

Hopefully. If you place a dummy "order" for a quantity at both Mouser and DigiKey, you get " Factory Lead-Time: 30 Weeks" or equivalent.

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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theusch wrote:
If you place a dummy "order" for a quantity at both Mouser and DigiKey, you get " Factory Lead-Time: 30 Weeks" or equivalent.

I highly doubt that it will take 30 weeks to fulfill. :wink:

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EW wrote:
@Stu, let me know if you haven't received your samples, say, by January 10. Yes, the xmega128A1 (and x64A1) is in production.
Thanks, Eric. Will do.

It appears that the analog sections in the 128A1 are still problematic in Rev H (not surprising, I guess). If that moves us to external analog parts, we may push the whole development back to the ATmega2560 (mostly for onboard SRAM). Too bad, really. The XMega series is such a *sweet* part. :D

Stu

Engineering seems to boil down to: Cheap. Fast. Good. Choose two. Sometimes choose only one.

Newbie? Be sure to read the thread Newbie? Start here!