Question about STM32H743 Errata Sheet ES0392 Rev 7

[damon kutten]

In Section 2.2.13 of ES0392, it states that there is "unexpected leakage current" if Vin >Vdd.

What is the bound on the leakage current (assume an FT pin type):

Vin = 5V and Vdd = 1.8V

Vin = 5V and Vdd = 3.3V

Vin = 3.3V and Vdd = 1.8V

Thank you.

[Imen.D]

Hello @damon kutten​ ,

I will check this internally and come back to you soon.

Best Regards

Imen

[Imen.D]

​ Hello @damon kutten​ ,

Sorry for the delayed reply on this.

The leakage will happen in all these scenarios:

• Vin = 5V and Vdd = 1.8V
• Vin = 5V and Vdd = 3.3V
• Vin = 3.3V and Vdd = 1.8V

Hope this answer your question, otherwise please clarify your question.

Best Regards,

Imen 

[damon kutten]

Can you tell me the amount of leakage current, in these three scenarios?

[Imen.D]

Hi @damon kutten​ ,

Unfortunately, at the moment we have no data to share regarding the amount of leakage current.

Best Regards,

Imen

[damon kutten]

But what does "unexpected leakage current" mean?

Someone must have measured this, and the result did not conform to expectation.