Best ATMega chip using a 28-Pin DIP form-factor?

Forum 2005-2010 (read only) Hardware Development
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So,

I am doing a bit of research. Now that I finally have a working bench with all the tools and goodies, I thought I'd start a project. You guessed it, a regular home-built Arduino board...The intention with this board is to really make the highest quality Arduino board out there, using the best components available. With the ATMega MegaAVR chips at the center of the operation, I thought I'd start there.

First off, I am no automated soldering machine, so those 64/100 pin SMD ATMegas aren't going to work. I can generally solder SMDs but those pins are way to close. So, I am looking for a solid 28-Pin DIP form-factor MegaAVR or equivalent. (The same chip used in Duemilanove.)

The one I am pretty much fixed on is the 328P-20PU which is a 328 with ATMel's PicoPower technology which is all around more efficient, and better with power.

But besides from that, it does not appear that I can get much better. The 1280 of course uses 64/100 pin layouts and that is to be expected if you want more performance.

But I was questioning whether or not there was something sort of inbetween the 328 and the 1280 that can be flashed with the Arduino bootloader and is entirely compatible or can be made compatible through a bit of tweaking. (A guide is usually nice ;)) And it has to be in the DIP formfactor or something that is atleast easy to solder.

Thanks

-Tim

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if you want a stick of chewing gum the 644 is a big beefy chip, and there is a arduino core available

check out this thread

http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1281994270

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Ah that's quite interesting. I wonder if it has the juice to run a touchshield slide with a fair amount of applications.

Thank you.