Schematic Pin Numbers Along With Nets Reasoning?
The point is the name of pin function, not the pin number. For all packages, the physical pin number might be different. called P0.27 which (most likely) means bit 27 of GPIO port 0. Another debate is whether that is a good name to name things anyway, but they are. For other MCUs, the name could be PA13 for example, for GPIO port A, bit 13.