NRF54L15 PWM limitations

[McRancor]

Hi!

I'm making a new board using nrf54l15 and I found the following issue:

        /*
         * PWM signal can be exposed on GPIO pin only within same domain.
         * There is only one domain which contains both PWM and GPIO:
         * PWM20/21/22 and GPIO Port P1.
         * Only LEDs connected to P1 can work with PWM, for example LED1.
         */

Do I understand this correctly that I'm able to use PWM only on GPIO Port 1? I found this in some board configuration file, but I'm not able to find any confirmation in the specification.

[Jørgen Holmefjord]

Hi,

Yes, this is correct. See Configuration in PWM peripheral documentation on which GPIOs can be used for which instance. For all PWM instances, only pins on GPIO P1 can be used.

In most cases, peripherals can be assigned to GPIOs in the same power domain, which you can see in the Product Overview Block diagram. For flexibility, a few select peripherals support Cross power-domain connections.

Best regards,
Jørgen