The Blue Pill: 5V tolerant vs 3.3V standard pins
Posted: Wed Nov 29, 2023 5:36 pm
Hi,
Formally, the difference is clear enough. Well, off the record: are those 3.3V pins equally intolerant of any use with 5V in the circuit? I suspect, for instance, that the usual LED + resistor arrangement won't kill the 3.3V pin even if the pull-up is connected th 5V. Is it really so?
Formally, the difference is clear enough. Well, off the record: are those 3.3V pins equally intolerant of any use with 5V in the circuit? I suspect, for instance, that the usual LED + resistor arrangement won't kill the 3.3V pin even if the pull-up is connected th 5V. Is it really so?