S32KのトピックRe: Operating Voltage

Operating Voltage

ajty878 — Tue, 10 Feb 2026 05:09:29 GMT

Hello,

I am working with a vehicle that gives an output of 13.5 V, so can I tap from this source to power S32 k144 mcu or do i need to step down it again?
Also if any datasheet that gives operating voltage range for this mcu then please attach that as well.

Regards,
Ajit

Re: Operating Voltage

PavelL — Tue, 10 Feb 2026 08:39:43 GMT

Hello @ajty878 ,

Yes, you need to step down.

Please refer to S32K1 Data Sheet - https://www.nxp.com/docs/en/data-sheet/S32K1xx.pdf - to chapter 4.2 Voltage and current operating requirements.

Best regards,

Pavel

Re: Operating Voltage

ajty878 — Tue, 10 Feb 2026 08:50:34 GMT

Hello Pavel,

I have this doubt.
But for external power supply we give 12V anyway right, so a tolerance of 1.5V which adds upto 13.5 V won't work?

Thankyou for the previous datasheet.

Regards,
Ajit

Re: Operating Voltage

PavelL — Tue, 10 Feb 2026 08:57:24 GMT

Hello @ajty878 ,

Then this query is related to your board and not to S32K1 itself. S32K1 has max operating supply voltage 5.5V.

So, you need to check voltage operating range of your board.

Best regards,

Pavel

Re: Operating Voltage

ajty878 — Tue, 10 Feb 2026 09:17:08 GMT

Dear Pavel,

This k144board is manufactured by NXP right so that's why I am asking this question here.
Or atleast help me find about the board voltage operating range.
Thankyou.

Regards,
Ajit

Re: Operating Voltage

PavelL — Tue, 10 Feb 2026 10:54:37 GMT

Hello @ajty878 ,

The board S32K144-Q100 Evaluation Board for Automotive General Purpose | NXP Semiconductors is assembled with UJA1169 which has maximum voltage on BAT pin +40V and the static characteristic are guaranteed for VBAT = 2.8 V to 28 V. So, 13.5V is OK for this board.

Best regards,

Pavel