Pin 1 3V3 Wio_terminal

[Gianfry60]

How many milliamps can be taken from pin 1 of the WIO_Terminal?

[lakshan]

Hi @Gianfry60,

I have made a response to a similar question on this post. Please check for a better explanation.

Trouble Using Port D0 as a digital output on Wio Terminal

Hi James, Even though the VCC_3V3 (Red), D0 (Yellow), D1 (White) pins output the same 3.3V, the maximum power draw allowed for the pins are not the same. Here is a schematic of the Digital/Analog Grove Port to start with. [1603856798(1)] All the I/O pins from the ATMSAMD51, except the 3.3V and the 5V pins, output 3.3V with a maximum current draw of 15mA. You can see it from the ATSAMD51 datasheet in the below section: [1] Therefore each D0 and D1 pins can only draw 15mA of current. Howeve…

So, based on the above, to answer the question below:

@Gianfry60

How many milliamps can be taken from pin 1 of the WIO_Terminal?

Pin 1 is the VCC_3V3 pin and it can draw a maximum current of 2A.

Hope it helps!

Best Regards,
Lakshantha

[Gianfry60]

thanks @lakshan, Very helpful