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GSing.21
GSing.21
Associate II
February 11, 2021
Question

What maximum Baud rate STM32G473 can support?

  • February 11, 2021
  • 1 reply
  • 1380 views

Actually, i don't get any max value for UART baud rate in datasheet as well as in reference manual.

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1 reply

KnarfB
KnarfB
Super User
February 11, 2021

There is some info in en.STM32G4-Peripheral-USART_interface_USART.pdf. The issue with high baud rates is the baud rate precision that you can achieve with your given master clock and the BRR register settings. For 170 MHz and 8-fold oversampling the calculated max is 21,25 Mbaud.

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