Timeline for Maximum absolute voltage (and currents) on STM32G microcontroller
Current License: CC BY-SA 4.0
5 events
| when toggle format | what | by | license | comment | |
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| Mar 29, 2023 at 1:43 | comment | added | sai | @divB, I could not find in the datasheet any info on the ESD diodes. Hence I asked. Can you point the section where it is? All ICs do not have diode clamps, particularly the 5V tolerant IOs. This IC has 5V tolerant ones and hence I have a stronger feeling that it does not have ESD diodes to supply. | |
| Mar 29, 2023 at 1:34 | comment | added | sai | @divB, I do understand the question. You are assuming that supply is steady even if you inject current into it but, what if supply starts increasing? Then, still the GPIO voltage will be clamped to supply but supply and hence GPIO voltage can rise beyond absolute max. | |
| Mar 28, 2023 at 23:29 | comment | added | divB | Regarding diode clamps: Because they are in the data sheet (st.com/resource/en/datasheet/stm32g030j6.pdf). Also, IC's pretty much always have diode clamps for ESD protection. | |
| Mar 28, 2023 at 23:28 | comment | added | divB | I am not sure if you understand the question, this is not about supply but a normal GPIO pin. And then, what the reason (=exact damage mechanism) is. | |
| Mar 28, 2023 at 2:48 | history | answered | sai | CC BY-SA 4.0 |