Regarding STM32F4 Micro Controller

[AGond.2]

Hello Folk,

Am working on STM32f4 Micro-Controller,Earlier I Checked Micro Controller with St Utility there i Observed Flash Size and Revision Id of Micro Controller Not Showing (Unknown) so I Doubted on Fake Micro Controller, and i Went through the Micro Controller Replacement.

So After Coming from Replacement of Micro Controller i Again Check With St Utility and Observed that Now Flash Size Is Showing 2MB but Revision Id Still Showing unknown. So What Would be Possible Reason for that ??

[KDJEM.1]

Hello @AGond.2 ,

I made some tests with STM32F429I-Disco board using a ST-LINK Utility and I didn't find any issues as shown in the below figure.

Could you please try the firmware update.

Note that, the ST-Link Utility (STSW-LINK004) is already NRND (Not Recommended for New Designs), please use the newer STM32CubeProgrammer instead.

I hope this help you!

Kaouthar

[TDK]

Does it work in STM32CubeProgrammer? Could be the ST-link drivers don't support st-link utility anymore, or at least that part of it.

What debugger are you using? Is it genuine or counterfeit?

[Tesla DeLorean]

ST-LINK Utilities have been deprecated for many years, might not be aware of newer mask-sets used at different fabs. Use STM32 Cube Programmer, or check DEVID 

STM32F42x Errata shows possible variants, and you could read this from the device with your own code. https://www.st.com/resource/en/errata_sheet/es0206-stm32f427437-and-stm32f429439-device-errata-stmicroelectronics.pdf

What also might be helpful is to know the top-side markings of the part you're talking about, so that could be cross-checked against expectations