I think I recognize this formula from PIC MCUs. And for a PIC the correct number will actually be 25 to be loaded into the SPBRG. All this is explained in the datasheet UART sectionIn many cases, the clock frequency of the UART circuitry is 16 times the baud rate.
For example, 9600 baud requires a clock frequency of 153,600 Hz.
If your MCU system clock is 4MHz, the closest you can get to the required clock is to divide 4MHz by 26.
Clock rate is like heart bit! Its nothing but a reference for baud rate generator in the circuit. Simply for any digital circuit you need the CLOCK! That is the root of digitization.what is the significant of clock frequency in baud rate calculation?? thx
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