cancel
Showing results for 
Search instead for 
Did you mean: 

does STM32H743 maximum gpios total current limit related to pin quantity? Datasheet says 140mA for 100,144,164.. pins.But i think max current must change base on pin quantity.

MZORE
Associate II

Are there anyone to know that gpio pin quantity to maximum current limit relation?

4 REPLIES 4
TDK
Guru

The datasheet certainly doesn't think so. Why would it change based on the number of pins?

If you feel a post has answered your question, please click "Accept as Solution".

Why, wouldn't it have more to do with the distribution of power, and the trace widths in the metal layers?

​

The parts share a common die, the bond out and lead frames might help localized current distribution/paths.​

Tips, Buy me a coffee, or three.. PayPal Venmo
Up vote any posts that you find helpful, it shows what's working..
MZORE
Associate II

Because, more pin ,more vdd quantity i thought that more vdd more total gpio pin current out

MZORE
Associate II

for example at 100 pin 5 vdd, 144 pin 10 vdd existed , i thought that more vdd more bound out and more total gpio current