Kinetis MicrocontrollersのトピックUART in VLPR\VLPS[MKW24D512]

UART in VLPR\VLPS[MKW24D512]

yuhuixuan — Fri, 30 Dec 2016 06:05:56 GMT

I want to use the uart communicate in a low power. In VLPR the UART moudle is active and the current is 2mA. In VLPS the UART is not work.

So Is there any other way that the UART can work and the power cost is low?

And in the VLPS mode the UART can work. Is the current is 2mA in the VLPS mode? If there is less than 2mA. Please send it to me the demo.

And in the VLPS mode. Use the fast IRC 4m no divide. I confige the baud. But the UART doesn't receive the right byte. Why this happen?

Re: UART in VLPR\VLPS[MKW24D512]

jorge_a_vazquez — Wed, 04 Jan 2017 18:25:10 GMT

Hi Yu Huixuan

As you can see in module operation in low power modes, UART module is just enable in VLPR and VLPW modes, so in VLPS mode, uart module register states and associated memories are retained but it is not working:

So in VLPS mode it doesn't matter that you configure your baudrate it will not work until you set your device in VLPR or RUN mode.

Hope this information helps you
Have a great day,
Jorge Alcala