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Topic: ATmega328P  -  New from Atmel (Read 2 times) previous topic - next topic

KG2

Twice the FLASH memory and only $3.70 at Mouser.  People have already tested boot-loaders for this new device.  I would imagine that all Arduino boards will be shipping with this chip soon since it looks like it will add no more than $0.34 to the board cost of those buying them in Qty. 100.

The 28 pin PDIP that all us Arduino hackers will want to plug into our old boards will be marked ATMEGA328P-PU.  Digi-Key lists them as "no stock" and Mouser lists them as "on order" at the moment,  its a rather new chip but they should be easy to come by very soon.  Boot-loader testing that I mentioned was done by a few lucky folk who received factory samples.

Atmel decided that only a 20MHz version of this chip will be made, no 10MHz version is planned, that's why they dropped the speed rating from the part number "-PU" and not "-20PU"

-=KG2

westfw

It's been talked about before, and I believe Lady Ada already has samples and has worked on a bootloader.
However, the latest rumor is that they won't be available to the general public until the end of the year (previous rumor was "end of august"; it didn't happen.  Atmel has a bad habit of taking their time to actually get new products shipping...)

Quijonsith

I'm liking my sanguino with the ATMEGA644P.  4x the flash, 4x the ram, 2x the EEPROM.  don't know how the cost compares, but my kit was $25 not including the FTDI cable.

Oracle

Quote
 Atmel has a bad habit of taking their time to actually get new products shipping...


I wouldn't call it a bad habbit.  I'd rather have them wait until a product is ready rather than push a buggy chip into production just to make a marketing deadline.

westfw

Allow me to rephrase, then.  Atmel has a bad habit of announcing new products long before they are far enough along their production curve to have a good idea when the product will actually be ready.  "Marketing deadlines" are part of Atmel too...

Oracle

Quote
Atmel has a bad habit of announcing new products long before they are far enough along their production curve to have a good idea when the product will actually be ready.  "Marketing deadlines" are part of Atmel too...


I agree with you there, but it affects a lot more of the industry than just Atmel.  Companies announce a product as early as possible, and the customers have a tendancy to keep waiting rather than going with something almost as good that's already on the market from another company.

While's it's not a good thing, why should Atmel give up potential sales by holding on an announcment when their competitors would announce as early as possible.

I think you have to blame the customers and all the companies for creating the situation.

ladyada

You want it? You got it!  :D



I ordered these $(*!q@)ing chips 4 months ago, and they've arrived!
I spent the weekend porting & testing the bootloader. So far so good, chips are in the shop and bootloader code on my site.

Unfortunately I havent finished fixing v12 so only v11 windows (thanks spiff!) is available right now
also please note that the fuses have CHANGED for this chip (see the bootloader page for minor corrections to spiff's port)

woo

b94cast


spiffed

I too finally have these in stock after several months on back order.
They're available bare for $5.25 Or pre-programmed for $6.25.

Currently you'll need to use my hacked Arduino 11, but I'm making very strong progress with Arduino 12 and expect to have a version out shortly.
iDuino - MaxSerial - [url=http://spi

mellis

Are you still making changes to the avr-libc files (iom328p.h) to get things working with the 328?  It would be great if you could get it working without doing that, so I could incorporate the changes into the Arduino distribution.  Otherwise, it will probably be a while before I have time to do it myself.  

ladyada

it seems like that is the one thing left to do, only problem is im not sure what changes were made to iom328p. everything else is fine except for a strange bug in the TWI interrupt handler..

spiffed: please note that i made some corrections to the bootloader instructions...make sure the fuses and text is fixed because otherwise it will 'appear' to work at first but cause some serious problems later when a large program overwrites the bootloader :(

Frank Katzenberger

Is it possible to replace the 16 MHz crystal oscillator to a 20MHz for the Diecimila without any changes to the two caps?  This ATmega328P will be pretty cool.
Frank Katzenberger
Squirrel Performance
[url="http://www.turbo-mopar.com&quo

Johan Krava

avrmicrocontrollers.com - AVR Microcontrollers

gnu_linux

Frank Katzenberger asked a great question! :)

Can we upgrade to a 20MHz oscillator crystal or 20MHz resonator and run the ATmegaXXX-20 chips at the spec'ed 20MHz and modify the bootloader and libraries accordingly to compensate ( so the timing is correct )?

:)

westfw

#14
Oct 27, 2008, 08:13 am Last Edit: Oct 27, 2008, 08:14 am by westfw Reason: 1
You know the mega168 is also spec'ed to run at 20MHz...
It was only the Mega8 that was limited to 16Mhz.

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