Lower baud rate required

billnd — Tue, 11 Aug 2015 15:45:42 GMT

I'm using a k10, with a core clock of 92Mhz, and using Uart0, which runs off the core clock. The lowest baud rate I can generate is ( 92,000,000 / 16 ) / SBR. SBR max is 8191, so the lowest baud rate supported is approx 700baud.

Without resorting to changing the core clock frequency, is there any way to make this lower? Some other hidden away divider somewhere perhaps? I don't have the option to change the clock, and want to avoid having to bit bang things.

I need to get it down to 300baud.

Thanks in advance for any help.

Bill

Re: Lower baud rate required

Jorge_Gonzalez — Wed, 12 Aug 2015 16:28:28 GMT

Hello billnd:

Unfortunately there are no extra dividers. You do not mention the K10 full part number, but depending on the part you could use a UART clocked by the bus clock and get the baudrate down to 350, since the bus is typically configured for half the core clock.

Regards!,
Jorge Gonzalez

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Kinetis MicrocontrollersのトピックLower baud rate required

Lower baud rate required

Re: Lower baud rate required