gpio power consumption

[El_Chez]

Hello Team,

 

I am using STM32N6,

I am using about 50 GPIOs, all for SPI and I2C communications, 

and the VDD port supplies 200mA, 

Will the usage of all these pins consume less than 200mA, or do I have to widen the range of VDD?

 

Also, what is the total max current consumed by the STM32N6 during its maximum processing,

 

Please let me know.

Thank you.

[AScha.3]

Hi,

see ds - all values there. Depends on many things, ports need almost no current in input mode, in output mode it depends on your circuit, how many mA you pull out of every port pin.

Only you can calculate this, from your circuit .

 + also what core needs ...see ds.

+

respect the limits :

 

[fantasygems]

The GPIOs themselves do not each consume a fixed share of the 200 mA VDD supply. Current depends mainly on switching frequency, load capacitance, pull-ups, and connected peripherals. You should calculate the STM32N6 maximum current from its datasheet and add sufficient margin to the VDD supply for peak processing and external GPIO loads.