Why NUCLEO-H753 ADC channel 12 is missing in CubeMX

PeterWangPTD · ‎2025-07-09

Hi,

Why NUCLEO-H753ZI ADC channel 12 is missing in CubeMX ?

ADC channel 12 is in NUCLEO-H753ZI board CN9-9 connector.

A few other ADC channels are also missing in CubeMX.

Thanks,

Rong

Karl Yamashita · ‎2025-07-09

How did you determine that CN9-9 is channel 12?

I was told that if a devices starts to smoke, put the smoke back in. I guess I never got all the smoke because the device never worked afterwards.
Don't worry, I won't byte.
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PeterWangPTD · ‎2025-07-09

In NUCLEO-H753ZI schematics - PC3 is connected to CN9-9, which is Channel 12 for ADC1, ADC2 - in the H753 users manual

Karl Yamashita · ‎2025-07-09

Well CN9-9 is PC2 not PC3.

The document clearly shows that only the TFBGA240 +25 package supports channel 12.

The Nucleo board has LQFP144 package.

I was told that if a devices starts to smoke, put the smoke back in. I guess I never got all the smoke because the device never worked afterwards.
Don't worry, I won't byte.
TimerCallback tutorial! | UART and DMA Idle tutorial!

If you find my solution useful, please click the Accept as Solution so others see the solution.

TDK · ‎2025-07-09

CN9-9 is called "PC3" in the schematic, which is misleading, but it's actually the PC3_C pin, not the PC3 pin. That is the reason ADC1_CH12 is not available--because the chip doesn't have a PC3 pin.

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