Baudrate

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The UART baudrate defines the speed at which data is transmitted over the UART interface, measured in bits per second (bps).

The BAUDRATE register lists a set of precalculated values for the most common baudrates and 16 MHz PCLK. For the high speed instances (PCLK > 16 MHz), the baudrate is calculated as follows:

Figure 2. UARTE baudrate
UARTE baudrate calculation equation
  • BAUDRATE is the value to be used in the UARTE BAUDRATE register.
  • f_PCLK is the peripheral clock frequency for the UARTE instance, as defined in Instances.
  • desired_baudrate is the desired baudrate in bits per second, such as 9600 or 115200.