Rob Butts wrote: > I'm trying to create a footprint for a Microchip signal controller. > I'm having trouble locating the horizontal pins with respect to the > vertical pins. The datasheet gives dimensions for chip width and > height, pinwidth and pin pitch. It doesn't give the distance from > chip edge to were the first pin from the edge. > Am I right in thinking I should multiply the pin width by the number > of pins on that side, then add to that the sum of space between each > pin (which I see as the pitch minus the pin width), subtract that > total from the chip length on that side and divide that value by 2 to > get the space from the chip edge to the first from the edge. > I was going to attach the datasheet but it is too large. > Thanks so much, > Rob >
are the TQFP footprints that come with PCB not suitable? -Dan _______________________________________________ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user