nRF54L15 I2C INT pin assignment for nPM1300 I2C connection

[Poki Huang]

Hi

Two questions as below

1. About nPM1300 & nRF54L15 I2C connection, at nRF54L15 side, I put SCL/SDA at P1.x group, so INT also need at P1.x group? Or I can put at P0.x group?

2. About below interrupt pin description, this mean port P0 can have max 4 interrupt pins & port P1 have max 8 interrupt pins? 

Thank you

Poki

[Simonr]

Hi Poki

1. You should try to have all pins for one peripheral on the same Port, although the interrupt pins should be unrelated to the I2C peripheral AFAIK. If you can, add it to P1, but should be fine to set to P0 as well.

2. There are only two interrupts on the GPIOTE20 instance and two interrupts on the GPIOTE30 instance.

Best regards,

Simon

[Poki Huang]

Hi Simon:

So how many pins can be interrupt pin at port P0/P1/P2?

Thank you

Poki

[Simonr]

Hi

Any GPIO can be used as an interrupt with the regular GPIO API, so no real limitations there. The GPIOTE interrupts only have a few interrupts though, and only these can be used for hardware tasks/events.

But for "normal" GPIO interrupts (buttons or generic events) you can configure any GPIO as an interrupt without needing GPIOTE channels.

Best regards,

Simon