9-bit uart MDB protocol

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9-bit uart MDB protocol

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BvLeeuwen
Contributor I

We currently have a system which is controlling an MDB bus and we are investigating if we can move to NXP chips. Everything is looking great, the only thing I can't seem to find is whether 9bit uart works "out of the box". I've read [link], [link] and [link] but these concern the imx6 series and I am still not 100% sure whether it will work on i.MXRT102x without having to bit bang anything.

Does the NXP chip support 9bit uart on hardware level?

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victorjimenez
NXP TechSupport
NXP TechSupport

Hello, 

The LPUART of the RT1020 family has the following feature: programmable 7-bit, 8-bit, 9-bit, or 10-bit character length. For more information regarding this, refer to section 44.3.6.1 of the RT1020 reference manual. 

Regards,
Victor 

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