It’s been a constant in the silicon business for some time now: reducing the die-size of a chip will bring about improved power efficiency. Consequently, mobile and desktop/server processor manufacturers have been racing towards ever smaller nanometer measurements, but the IoT won’t exactly mirror this path. Not all IoT devices are about tiny geometries. Stuart Forbes, Freescale’s digital networking manager, said in an interview that the firm has no current plans for 10nm, and that it will be several years before it can make microcontrollers in 16nm because it is extremely difficult to implement flash and analog elements in this technology. 16nm in mobile and desktop chips required the FinFET process, which allows transistors and memory to be stacked –…