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UART Warning - 'UART should not be used along with a Power Setting that has SysClk freq less than 24MHz'
Question: I am getting a warning message in my UART project: "Instance name-UART User Module-UART Configuration-lm6222: Level 1 Warning - UART should not be used along with a Power Setting that has SysClk freq less than 24MHz." Would you explain what this warning message means.
The UART module needs to be clocked by a source that has a deviation of +2.5% max for reliable communication. The IMO of the PSoC has a maximum tolerance of 2.5% and hence can be used for UART. But the 6MHz SLIMO clock has a tolerance of +4.2%, which is not ok for an UART. So, when SLIMO is selected as the SysClk, the DRC generates the above warning.