S32KのトピックRe: S32K312MINI-EVB

S32K312MINI-EVB

NagarajBahaddur — Tue, 25 Aug 2026 06:44:09 GMT

Hello,

I am using an NXP S32K312MINI-EVB board.

Initially, the board was powered ON and the LEDs were working, but the USB connection was not detected by Windows Device Manager.

I verified that the PEmicro driver is installed. Device Manager shows:

Jungo Connectivity → pemicrovincdrv

I also tested the board with another PC and another USB connection, but the board was not detected.

During troubleshooting, while the board was connected through USB, I removed the J19 and J20 jumpers. The board LEDs turned OFF.

I then put the jumpers back, but now the board does not power on when i tried to give power supply though USB . when I supply 12 V through J1 only RGB led is ON.

According to the S32K312MINI-EVB Hardware User Manual:

USB-C J9 → J19 = 1–2, J20 = 1–2
12 V J1 → J19 = 2–3, J20 = 2–3

I have set J19/J20 accordingly, but the power LED remains OFF.

Could someone please help me determine whether the board's power circuit may have been affected and which test points I should measure?

I can provide photos of the board and voltage measurements at J23 (VBAT), J24 (VBST), J16 (P5V0), J17 (P3V3), and J27 (GND).

Thank you.

Re: S32K312MINI-EVB

Robin_Shen — Wed, 26 Aug 2026 09:14:02 GMT

Please do not use a USB hub; connect the USB cable directly to the computer. I recommend connecting via USB 3.0 or Type-C port.

S32K312MINI on board debugger.png

Does the red OSDA_LED D9 light up?

Otherwise, OpenSDA may not work properly, which would prevent the onboard debugger from being used.

Please check the voltage one by one according to the schematic diagram.

Best Regards,
Robin

Re: S32K312MINI-EVB

Robin_Shen — Mon, 31 Aug 2026 02:47:43 GMT

When powered by USB (J19 1-2, J20 1-2), pin 2 of J19 measures 12V, and pin 2 of J20 measures 5V. The red OSDA_LED on D9 is lit.

UM12505 Table 3. Supply board method (low current).png

When powered externally by J1 (J19 2-3, J20 2-3), pin 2 of both J19 and J20 measures 12V. No LED is lit. In this case, an external debugger needs to be connected to J7 to download programs to the S32K312.

UM12505 Table 4. Supply board method (high current).png

Also, please refer to Figure 3. Main THP for power measurements in UM12505, FRDM-A-S32K312 development board for MCUs hardware user manual to check if it conforms to Table 5. Through hole pads for measure voltages.

UM12505 Table 5. Through hole pads for measure voltages Figure 3. Main THP for power measurements.png