Thank you, Running Diagonally would make sense to me as EMI can pose an issue but why the edge of the chip? What is affected in that sense?Convenience. Using a single pin would complicate the layout and fabrication of the chip. This way the current flowing in and out is distributed over a number of pins so the temperature rise can on each pin can be limited. This also prevents power and ground runs from running diagonally across the chip, or worse, around the edge.
Inductance of a long trace. This is a function of increasing clock speeds. This could also make it difficult to connect other pins to the interior. It also depends on how many metalization layers there are. Maybe somebody who is expert in chip fabrication could opine. I've only ever done a chip design -- never a layout or fabrication.Thank you, Running Diagonally would make sense to me as EMI can pose an issue but why the edge of the chip? What is affected in that sense?
by Aaron Carman
by Jake Hertz
by Duane Benson
by Jake Hertz