Assigning pins for I2C on nRF52810

[timl]

Starting new design using nRF52810 QFN-48. Can someone point me to the document that explains which pins on which package are advisable for I2C operation? I need to know all my options. Don't tell me, show me in a document. Document #, page # would be great. Thanks in advance.

[Jared]

Hi,

See the pin assignment section in the product specification here. In short, you can use every pin marked as GPIO except for the pins that are located near the radio.

regards

Jared 

[timl]

Thanks, now I know that I2C can be configured to any GPIO pin, great. Now which GPIO pins on QFN-48 are considered too close to antennae, assuming the pins are the closet portion of that net to the antenna.

[timl]

Hi, I realize that it depends on where I place my antenna, as to whether it disqualifies a pin as being too close. That said, what is the physical distance I need to keep high frequency GPIO pins away from the antenna?

[Jared]

Hi, 

Did you see the link I shared in my previous reply?

timl said:

I realize that it depends on where I place my antenna, as to whether it disqualifies a pin as being too close. That said, what is the physical distance I need to keep high frequency GPIO pins away from the antenna?

It's mostly dependent on the radio in the IC not the antenna. Which means that moving the antenna will not help, the pins should still not be used. 

regards

Jared