Final answer:
The maximum baud rate for a UART on an MSP432 with the SMCLK at 3 MHz using a typical oversampling ratio of 16 is 187,500 baud, which is derived from dividing 3 MHz by 16.
Step-by-step explanation:
When determining the maximum baud rate for a UART (Universal Asynchronous Receiver/Transmitter) using oversampling on an MSP432 microcontroller with the SMCLK (Sub-Main Clock) set at 3 MHz, we need to consider the oversampling ratio required for UART communication.
The typical oversampling ratio used is 16, which means the baud rate generator divides the input clock by a factor of 16 to produce the baud clock.
Therefore, with a 3 MHz SMCLK, the maximum baud rate with oversampling would be 3 MHz divided by 16, giving us a rate of 187,500 baud.
However, other factors such as error tolerance and the specific requirements of the UART module may further limit the maximum usable baud rate.