Possible to program Atmega32u4 on a breadboard??

HI,

I need to program Atmega32u4 on a breadboard. Since Atmega32u4 chip pins are so small and looks lke they can't be programmed on a breadboard, I would like to know if the
"http://www.cafr.ebay.ca/itm/New-Pro-Micro-ATmega32U4-5V-16MHz-Replace-ATmega328-Pro-Mini-for-Arduino-/140972980117?hash=item20d2a4f795:g:MTwAAOSw241YfeGn" from ebay
could replace all the pins that Atmega32u4 has for breadboard programming?

On the picture, we can see that the "New Pro Micro ATmega32U4 5V 16MHz Replace ATmega328 Pro Mini for Arduino" has 24 pins, but the Atmega32u4 has 32 from the datasheet. If it can remplace the chip entirely, why they don't have the same number of pins?
and what is the meaning of the the RAW pin from "New Pro Micro ATmega32U4 5V 16MHz Replace ATmega328 Pro Mini for Arduino"?


Thank you

You are comparing the pinout of a Dev board with the pinout of the microcontroller inside, which are not necessarily the same, since on the board there are added components. Did you even look for the schematic of that?

andre_teprom said:

You are comparing the pinout of a Dev board with the pinout of the microcontroller inside, which are not necessarily the same, since on the board there are added components. Did you even look for the schematic of that?

Click to expand...

Yes, but I only need to program the ATmega32u4 chip on my own breadboard with my own circuit ( and not like on the small board which is on the picture together with their added components) ? The problem would be that the Atmega32u4 chip is too small for a breadboard ? Do you know any way I could do that?

You could buy SMD/PTH adaptors like that:
https://www.digikey.com/catalog/en/partgroup/qfn-to-dip-smt-adapters/60906

But honestly the cost and the effort expended to mount the external parts does not offset if compared to the value of a Kit, besides that the reliability of the assembly in a breadboard is always questionable, either by the connections, or by the signal integrity.

A chip that will not mount on a breadboard, such as a QFN32 or TQFP32 package, will need to be soldered to a surface mount to DIP adapter, such as a Schmart Board, so that it can be mounted on a breadboard. Then it will need to be programmed with an AVR programmer, through the MOSI, MISO, SCK, and reset pins.