For large packages with lots of VDD and VSS pins, I make 2 units, where "all units are not interchangable". "A" part has the important pins, and "B" part is for the power. See schematic attached for an LQFP176 package STM32F429 MCU.
For large packages with lots of VDD and VSS pins, I make 2 units, where "all units are not interchangable". "A" part has the important pins, and "B" part is for the power. See schematic attached for an LQFP176 package STM32F429 MCU.