S32K uses PLL, can use external crystal 4M?

[xiabin]

I am using the S32K configuration tool, PLL use osc 4m, clock diveder = 1; Information：

warning：the result frequency must between 8m to 32m.

[jorge_a_vazquez · Accepted solution]

Hi Xia bin

Not, unfortunately, SPLL reference frequency range is Min 8MHz and max 16MHz, so, you can't use it with an osc of 4M. Sorry for the inconveniences:

https://www.nxp.com/docs/en/data-sheet/S32K1XX.pdf#page=33 

Best regards

Jorge Alcala