I have a schematic and pcb layout done in altium i need updated. we are changing the current atmel at32uc3a464s micro to a atmel at32uc3a3128s. differences are the current is bga100, new is bga144. but the micros are both from same series so most pins remain the same. I also want to make 2-3 very minor component changes, ie replace diodes with cheaper/better solution, maybe mosfet ?? the current board is 6 layer, and has no nested vias. the new design will have no nested vias.
this is a simple update. the board is not very complex.
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