Does anyone know if it is a problem (or better yet has anyone tried it) to connect to the NC pins on a tiny13 in the MLF package? Does NC indicate that the pin is not connected internally within the package (therefore I could connect them to ground without causing harm) or that the pin is connected to something inside the package and must not be connected externally?
I'm planning a project that will use a tiny13, and it's so simple that I'd like to use a single sided PC board. If I can connect to the NC pins safely, I'd route ground from the central pad through one or more of pins 16-20 so that it would be easy to place a decoupling capacitor next to VCC at pin 15. Otherwise, I'd need a double sided board to get a ground trace next to VCC without effectively cutting off access to one side (pins 11-14) of the chip or the other (pins 1-5).
If I could I'd try to use the 10 pin version of the MLF package that is mentioned in the datasheet because this would make single sided PC board routing easier, but I don't have a local source for the 10 pin version of the chip.
Anyone with experience or better knowledge?