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TIOL1113: about baud rate

Part Number: TIOL1113
Other Parts Discussed in Thread: MSP430F6726A


In order to comply with COM3, how many baud rates of the communication UART with the MCU are required?

The MCU is MSP430F6726A, and BRCLK = 8MHz is assumed.

Best Regards,

  • Hello,

    There are 3 defined communication rates for IO-Link associated with COM1, COM2, and COM3.  COM1 is the slowest rate and all applications should support this rate at a minimum.  An application could support COM1 and COM2, but not support COM3.  If the application will support the highest speed of COM3, then it should also support both COM1 and COM2 rates as well.  The data rates associated with the three COM rates are as follows:

    COM1 = 4.8 kbps

    COM2 = 38.4 kbps

    COM3 = 230.4 kbps