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Mreppold
Associate
September 24, 2026
Solved

STM32N6 - GP configuration

  • September 24, 2026
  • 6 replies
  • 22 views

Hi there, 

can someone explain what the GP configuration of the STM32N6 is? 
I can only find information that the dedicated pinout is different (Datasheet Chap.7) but no more information whether this has any influence on the functionality. 

Is there any reason why the STM32N657H3QG is not available in “Tape and ring”  packaging?

Thanks 
Mitja

Best answer by mƎALLEm

Hello @Mreppold ,

GP stands for General Purpose.
Here are the explanations regarding the naming of the VFBGA169 and VFBGA169GP packages.

These two packages contain exactly the same die. There is no difference in peripherals, the NPU , the internal memories, or the SMPS (please refer to DS14791 Rev 10 Table 3). Knowing that all STM32N6 series embed an internal SMPS.

Compared to the VFBGA169 (STM32N64xA0H3Q) package, the only differences of VFBGA169GP (STM32N64xA0H3QG) are the following:

  • It exposes a 16-bit XSPIM-P1 interface.
  • It has a dedicated VDDIO2 power rail.
  • Its GPIO pinout has been reorganized.

What was decided regarding the ordering code (CPN) was to distinguish this package using the last character (Q in the figure below), since it was the only position that allowed the addition of an extra character (Q+G).

 

Hope that answers your question about the STM32N6 GP configuration.

6 replies

mƎALLEm
mƎALLEm
ST Technical Moderator
September 24, 2026

Hello ​@Mreppold and welcome to the ST community,

What do you mean by “GP configuration”? do you mean the GPIOs?

And this statement is not clear:

I can only find information that the dedicated pinout is different (Datasheet Chap.7) but no more information whether this has any influence on the functionality. 

Chapter 7 provides the ordering information not the pinouts information. The pinout is provided in the Table 18. Pin description

For the second question regarding the packaging need to ask your local sales.

To give better visibility on the answered topics, please click "Best answer" on the reply which solved your issue or answered your question.
MreppoldAuthor
Associate
September 24, 2026

Hi ​@mƎALLEm , 

well that’s exactly my problem: 
There are two different versions of the STM32N657A0H3 mentioned through the datasheet: 
For example Table 5 lists STM32N657A0H3Q and STM32N657A0H3QG. When I tried to find out what the G stands for, the only information I found was in Chapter 7 where the datasheet states “QG = Internal SMPS step-down converter + GP configuration”. 
Unfortunately I could not find and information telling what GP configuration is. That’s why I am asking. 

Regarding the packaging, it seems like this is not a sales issue, since there is no information at all that the ...QG variant is available as TR. It is not even listed in the STM32CubeMX while all the other versions of the STM32N6 are listet in both variants with TR and without.

So my underlying question is: Can the STM32N657A0H3QG be used in a product or is it just a sample variant which is not available for production?

Thanks

 

mƎALLEm
mƎALLEm
ST Technical Moderator
September 24, 2026

Ok,

I’ll check internally for the first question but for the second one, both devices are available in CubeMx:

Please double check or use the latest version of CubeMx.

To give better visibility on the answered topics, please click "Best answer" on the reply which solved your issue or answered your question.
MreppoldAuthor
Associate
September 24, 2026

Thanks for checking. 

On the second question, your screenshot shows my question as well: 
For the variant without G at the end, there are two variants (STM32N657A0H3Q and STM32N657A0H3QTR), but for the STM32N657A0H3QG there is no variant with the TR ending. That’s why I’m curious whether the QG variant is supposed to be used in a product which goes into series production when it is not available on tape. 

 

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