Migration from STM32F429ZI to SMT32H7 complexity?

[JacobV]

Posted on June 16, 2017 at 02:07

Hi there,

Has anyone been considering migrating from the STM32F4 chip to the upcoming H7 chip, and how involved\possible that process might be? My specific chip is the STM32F4ZIT6, but I'm curious about others' experiences with migration within the ST family.

I'm aware of the

http://www.st.com/content/ccc/resource/technical/document/application_note/73/76/21/47/ef/d0/4c/16/DM00164538.pdf/files/DM00164538.pdf/jcr:content/translations/en.DM00164538.pdf

(Migration STM32F4-->STM32F7) and the

http://www.st.com/content/ccc/resource/technical/document/application_note/group0/61/f7/a2/df/11/18/48/f2/DM00337702/files/DM00337702.pdf/jcr:content/translations/en.DM00337702.pdf

(Migration STM32F7 --> STM32H7x3) documents and I'm currenly working through those (they insinuate that F4 -> H7 is possible), but I figured I'd ask to see if anyone had experience or opinions on this.

Thanks!

#stm32f4 #stm32h7 #migration

[Uwe Bonnes]

Posted on June 19, 2017 at 13:46

The reference manuals and demo boards are not yet general available. So 'normal' people could not look at the migration problems carefully. And other people with access to doco and board are probably still under NDA.

[Uwe Bonnes]

Posted on June 19, 2017 at 14:37

Oops, rm0433 is available!

http://www.st.com/resource/en/reference_manual/dm00314099.pdf

 

[Asantos]

Posted on June 19, 2017 at 21:19

Hi,

  I'm trying to figure out if the H7 ADC will have the same 5 MSPS sampling rate for 12 bits as L4. The STM32CubeMx show that the maximum ADC clock frequency is 80 MHZ and the H7 reference manual shows that ADC hardware is very similar to the L4 ADC hardware.

So, can I assume that the H7 ADC sampling rate for 12 bits is 5 MSPS?

 Ari.

[lucas239955_stm1]

Posted on June 20, 2017 at 05:04

Hi Ari,

It looks like the ADC hardware is different. 

From the STM32H7753xI data sheet (

http://www.st.com/resource/en/data_brief/stm32h753xi.pdf

)

'3× ADCs with 16-bit max. resolution (14 bits 2.7 MSPS, 16 bits 168 kSPS)'

From this I understand that in 14-bit interleaved mode, you could expect 8.1MSPS.

For 16-Bit interleaved mode you could expect 0.504MSPS (504KSPS)

[Amel NASRI]

Posted on June 20, 2017 at 10:11

Hi

Mendes.Ari

‌,

With 12-bit resolution, the sampling rate is 4.5 MSPS.

The product datasheet will be available soon on the web to provide such information.

-Amel

PS: I suggest to create a new thread for new H7 related topics.

[Asantos]

Posted on June 20, 2017 at 18:47

Thanks Amel.

  4.5 MSPS is very good compare to the 1.8 MSPS of the F7 when the cpu clock is at 216MHZ.

Do you also know when the NUCLEO-H743ZI boards will be available? Ari.