HI,
i use the s32k146MCU,the IDE is S32DS for ARM 2018 R1
i find something :
jpg1
when my clock set follow the jpg1 ,then the MCU is ok ,it can run not any bug;
but , when i set follow jpg2
jpg2
set jpg2 ,sometime it can run ,sometime it can't run .
the different from the two set , the SLOW_CLK not same. But ,i fine when the SLOW_CLK=12.5MHZ,
the I/O from 0 to 1,or from 1 to 0,it need 400ns ,it's to slow ,i want more fast than 400ns.
And ,my other set follow the jpg3 and jpg4
jpg3
jpg4
Hi,
I would like to ask you for what purpose do you need this?
At first, you can try to set the clock at maximum frequency:
Related to the settings of SPLL, please, follow the RM.
I hope it helps.
Best regards,
Diana
hi,
thanks reply ,i am so sorry ,i have no saw this about the CORE_CLK and SYS_CLK maxvalue is 80MHZ before today.
but ,now ,how can i set CORE_CLK and SYS_CLK to 80MHZ.
jpg5
i set the follow jpg5 , is ture or will into MCU stop?
Best regards
Hi,
Yes, that is why the best way is to start with RM, current version 12.1:
https://www.nxp.com/webapp/Download?colCode=S32K1XXRM
The CORE and SYS clock is the same, it is set correctly.
Also, you can set SLOW_CLK to "SPLL_CLK/6" to reach a higher frequency.
Or you can consider switching to HSRUN mode to reach higher frequencies, but I do not know your application requirements (this mode has some limitations).
I hope it helps.
Best regards,
Diana
