Hey, I think Crossroads may be right on this. It's pretty close - the footprint is different but it looks like it is compatible. This is from DipTrace. This is the QFP32 7mm/7mm/0.5mm and QFN32 5mm/5mm/0.5mm footprints side by side. The problem here is that Diptrace doesn't show the exact outline of the package itself so if you imagine a worst case scenario here the QFN's pins might be just inside the radius of the QFP's traces. But it may be OK too.
Very kind of you to put that image up - thank you for that. By CrossRoad's help it's clear to me now that I'll have to try and get a QFP32 and try and solder it.
A caviat is that QFNs are not as easy to solder as QFPs so keep that in mind. I hot air solder them myself and inspect them under a microscope.
I shudder at the notion - I've never worked with them before. But there's a first time for everything. Hot air and paste at the ready, then.
I have use Atmel's QFN32 5mm/5mm/0.5mm packages. Too bad I don't have a PCB with a QFP32 7mm/7mm/0.5mm footprint on it otherwise I would see if it would work out for you.
Again, that's awfully kind of you - thank a lot. I might contact you in the case I need a bit of advice in regards to the soldering - would that be ok with you?
Sure. The way I have done it is actually I pre-tin the pads with regular solder and lots of flux. I reflux the whole footprint and the IC and I melt the solder all at once with the hot air and place the QFN on top of that, it usually settles right in. It will never settle between the pads which is great but it can settle off a whole pad so have tweezers ready to give it a nudge if it does that. The microscope is to check out if everything went OK and how all the heels look which is impossible to see with no or low magnification, at least for me.
Here is one I did with this technique. This was taken through the eyepiece on the microscope so the quality is only OKish.
This is a Mega8U2. Designed in DipTrace. Manufactured at OSHPark. Maybe I should have cleaned it before showing it off.
DipTrace is free to hobbiests up to 500 pins. You might want to give it a spin. It's very easy to use. I know Crossroads and a lot of other people like Eagle but the free version is limited and the pay version gets very expensive very quickly. DipTrace has lowered pricing for hobbiests.