The word on the street is that the semiconductor companies are childish and hate to give each other credit for anything, while at the same time they are deadly afraid of patent infrigments.
So Freescale won't call UART for UART, since it is (was) closely asociated with National Semi. Instead they call it SCI, Serial Communications Interface... a name that means nothing and won't be understood or recognized by anybody.
Similarly, Microchip, Renesas etc won't call SPI for SPI since it was invented by Motorola/Freescale, they call it serial synchronous bus or something vague and fuzzy like that, so nobody understands what they mean.
