LPUART baudrate Error Calculation

[Alagesan]

Please Provide LPUART baud rate error calculation for the frequency clock above 100 MHz. In Reference manual [LPUART], Only for frequency clock = 100 MHz baud rate error calculations are given. Please Provide frequency other than 100MHz

[TDK]

Baud rate is very simple to calculate. Surely you can handle the calculation yourself.

 

If not, provide the desired baud and clock rates instead of making us guess.

[Tesla DeLorean]

Not using G4, but other parts with constrained BRR settings, the UART has a PRESCALER to cut the bus clock down

[Imen.D · Accepted solution]

Hello @Community member​ ,

Welcome to the STM32 Community :smiling_face_with_smiling_eyes:

 The mistake is in the desired value, it should be 33 000 Kbaud:

From this value is also calculated the error value (0.1%) – because “actual�? value is as highlighted above.

This will be corrected in the coming release of the reference manual RM0440.

When your question is answered, please close this topic by choosing Select as Best.

Imen