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hanqingze
Associate II
September 18, 2024
Solved

STM32H743VIT6 ADC different channel sampling rates

  • September 18, 2024
  • 5 replies
  • 3434 views

hanqingze_0-1726674353966.png

I have two questions. One is how are Y and V distinguished? The other is where can I know what channels these Direct channels and FAST channels include?

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Best answer by STTwo-32

On your MCU STM32H743VIT6, you have only 3 ADC Fast channels (as indicated on the last page of table 2 of the DS12110)

STTwo32_0-1726682241280.png

Those channels are ADC12_INP3 (mapped to the PA6), ADC12_INP4 (mapped to the PC4) and ADC12_INP5 (mapped to the PB1).

PS: ADC1 and ADC2 are tightly coupled and share some external channels (such as those that we have mentioned before). For the PF3, PF5, PF7, PF9, PF11 and PF13, they are also fast channels, but they don't exist on your MCU (as you can see on the Table9 of the DS12110) Your MCU Pin/ball name is LQFP100 or TFBGA100 (you can find the Pin/ball of your MCU on the Bottom of the Table 2 of the DS12110:(

Here is an example of the PF5 that output the fast channel ADC3_INP4, but it is not available on the LQFP100 or TFBGA100:

STTwo32_1-1726682860208.png

Best Regards.

STTwo-32

5 replies

STTwo-32
STTwo-32
ST Technical Moderator
September 18, 2024

 

 Hello @hanqingze 

For the Revision of the MCU, you can find it on the external cover of the MCU for example for the STM32H743ZIT6U, it is near ST Logo. It is a big letter (V or Y).

For the Fast Channels they are available on the RM0433 Rev8 on the Figure 138 ,139 and 140:

STTwo32_0-1726676038394.pngSTTwo32_1-1726676055168.pngSTTwo32_2-1726676068855.png

Next Time, please use the official forum language (English). Here is what our customer said:

I have two questions. One is how to distinguish Y and V? Another question is, where can I know these Direct channels, which channels include FAST channels?

Best Regards.

STTwo-32

To give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.
hanqingzeAuthor
Associate II
September 18, 2024

Thanks, but I realized I didn't find Figure 138 ,139 and 140, can you take a screenshot or post a link?

STTwo-32
STTwo-32
ST Technical Moderator
September 18, 2024

They are available on the Post as screenshots and on the pages 920, 921 and 922 of the RM0433.

Best Regards.

STTwo-32

To give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.
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