STM32F7 and STM32H7 very high performance MCUs

[AndreyB]

Matt reminds about some stm32h7 drama https://www.eevblog.com/forum/microcontrollers/stm32h7-series-revision-beware-of-the-changes!/

[mck1117]

And also AN5337: STM32H7 Series lifetime estimates:

https://www.st.com/resource/en/application_note/dm00622045.pdf

https://community.st.com/s/question/0D50X0000BB3xB6/stm32h7-series-lifetime-estimates

480MHz + 100c die temperature = less than 2.5 year life

For comparison, the F4 doesn't even have a lifetime doc, and the only thing mentioned is the flash retention, which is spec'd at no less than 10 years at 105C, and 30 years at 85C.

[AndreyB]

While H7 176 pin pinout is "compatible" there are a few Easter eggs:

176 package has pin PC2_C not "normal" PC2 available on BGA packages - both are ADC inputs routed to different peripheral.

PA4/PA5 pins while also ADC pins use new to us high indices within ADC

https://www.st.com/resource/en/datasheet/stm32h747ag.pdf

[AndreyB]

Just a recap of STM32H7 rusEFI status:

1) there are rumors of Matt fitting some 144 pin on STM32H7, not sure if just a test drive around the block or daily duty

2) 176 pin Hellen81 has driven a few meters but running custom not yet published firmware

[mck1117]

1) there are rumors of Matt fitting some 144 pin on STM32H7, not sure if just a test drive around the block or daily duty

I am here to substantiate these rumors! Since this youtube video, my v8 wagon has been running on H7. 5 or 6 months or whatever it is now.

[AndreyB]

https://www.st.com/en/microcontrollers-microprocessors/stm32h7-series.html

10 years later - got some H7 boards but that's a BOM mistake

https://github.com/andreika-git/hellen-one/issues/391

WhatsApp Image 2024-07-22 at 20.18.45_29567ccd.jpg