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Topic: How would you go about building a stand alone atmega 2560? (Read 1 time) previous topic - next topic

Samuel10

Could someone explain how to do so? Which pins would connect to a ceramic resonator ect?

johnwasser

Just look at the datasheet for the TQFP-pinout ATmega640/1280/2560:

10: VCC
11: GND

30: Reset
31: VCC
32: GND
33: XTAL2
34: XTAL1

61: VCC
62: GND

80: VCC
81: GND

98: AREF
99: GND
100: AVCC
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CrossRoads

I'd do it like this.

You can get a breakout board from schmartboards.com, solder the chip in place, then add the few components needed.
Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
Arduino for Teens available at Amazon.com.

JoeN

If you don't like the soldering aspect this guy will do it for you:

http://jkdevices.com/ATMEGA2560

If you do like the soldering aspect, you can get these boards on eBay and do it yourself.  You can probably get the chip from Atmel for free if you can do a little song and dance on the samples request page.

http://www.ebay.com/itm/TQFP-100-TQFP100-0-5mm-pitch-Adapter-PCB-PIC24-PIC32-
I have only come here seeking knowledge. Things they would not teach me of in college.

codlink

I am in the process of of designing a custom PCB for the 2560 using Eagle.  I may have an issue though, I have ran the DRC and the Itead DRC check advised that the pins on the 2560 have a clearance issue.  I am probably just going to finish the board and send it too Itead and see if they will still fab it.
//LiNK

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