topic Re: Recommended decoupling RT1064? in i.MX RT Crossover MCUs

Recommended decoupling RT1064?

carstengroen — Sun, 16 Dec 2018 10:49:13 GMT

In the RT1050/RT1060 Hardware Development Guide: https://www.nxp.com/docs/en/user-guide/MIMXRT105060HDUG.pdf

on page 3 is a list of the various power connections and the recommended decoupling capacitors. For Pin VDD_SNVS_CAP is listed 1 x 0.22uF and 1 x 4.7uF:

On the other hand, when looking at the EVK schematics for the 1064EVK, only a single 0.22uF capactor is shown:

Which one is "the most recommended" way ?

Also, the NVCC_PLL signal is not mentioned in the Hardware Development Guide, according to the EVK, there is a single 0.22uF and a single 4.7uF as decoupling, I assume this is the recommended way ?

Re: Recommended decoupling RT1064?

fangfang — Mon, 17 Dec 2018 03:28:06 GMT

Hello,

There is single 0.22uF + a single 4.7uF or single 0.22uF is ok for the VDD_SNVS_CAP/NVCC_PLL . Hope it help you.

regards

Tina

Re: Recommended decoupling RT1064?

carstengroen — Mon, 17 Dec 2018 05:52:07 GMT

Thanks,

I was just confused that there was differences between the EVK and the Hardware Development Guide.