hi,
so i have been developing a PCB for a product and after testing using a DIP package i miniaturized the design to use a QFN package. after downloading the library for the footprint for eagle (avr-4) i dropped the package and had some boards made up.
but after assembling and trying to test i realised that the footprint is different too the package. so i dropped the TINY24/44/84-MU, apparently HP-VFQFP-N20 and its totally mismatched, apparently its a 20pin QFN/MLF20, but no matter how hard i search or look at datasheets i cannot find one with a pin pitch greater than 0.50 and the pad the library dropped is 0.65.
this is the first time iv dealt with QFN packages and i don't really know a great deal about what im doing with them, so any help with finding out what im obviously not getting is much appreciated. i need to move along with this prototype quickly so i would like to avoid having more boards made and waiting for a week or two for them to arrive.
thanks,
mark.