S32KのトピックRe: [S32K3] about LVD Interrupt

[S32K3] about LVD Interrupt

ssean — Tue, 13 Oct 2026 06:51:45 GMT

Hello,

I am trying to use the LVD interrupt feature on the S32K3 MCU.

I set LVDIEEnable = true in the MCU configuration.
Although 5V is currently supplied to the MCU, Power_Ip_PMC_VoltageErrorIsr() keeps being triggered continuously.
I would like to ask if this is normal behavior, or if I have misconfigured something.

Re: [S32K3] about LVD Interrupt

danielmartynek — Tue, 13 Oct 2026 10:44:25 GMT

Hi @ssean,

If LVD5AF stays set after you clear it.

The voltage must be lower than the specified threshold:

Can you measure the voltage?

Thanks,

Daniel

Re: [S32K3] about LVD Interrupt

ssean — Tue, 13 Oct 2026 23:55:49 GMT

Hello, @danielmartynek

A voltage of 5V is being applied to the following pins:

Using a 100-pin MCU (FS32K312NHT0VPAST)

VREFH: PIN 8
VDD_HV_A: PIN 10
VDD_HV_A-2: PIN 37
VDD_HV_A-3: PIN 62
VDD_HV_A-4: PIN 87

Although 5V is supplied, the LVD5AF flag register keeps being set.
Are there any additional points or registers I should check?

BRs,

Sean

Re: [S32K3] about LVD Interrupt

danielmartynek — Wed, 14 Oct 2026 11:13:34 GMT

Can you please specif the part number?

Which RTD revision do you use?

Thank you,

Daniel