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nRF5340 low drive, low frequency pin clarification.

Yadhu KP

Hi,

We are Migrating from nRF52832 to nRF5340 dual-core soc. In nRF52832 9 off available GPIOs were only to use with a low drive, low-frequency application since they may affect the radio performance. The nRF5340 is a dual-core SoC and GPIO pins of the system can be allocated among the cores so I believe we really have a choice not to use Network core pins, how does this affect available GPIO for high-frequency usage, does nRF5340 still has some pins that should not be used for High-frequency application? can you explain

  • +1

    Hi

    No, there aren't any nRF5340 GPIOs specifically noted as recommended to use as low drive, low-freq, but just a select few are able to run at Extra High drive as specified in the Pin assignments chapter. There shouldn't be anyone that specifically can't be used for the "regular" high-frequency application, but to be on the safe side I would start by using the ones that are specifically mentioned as designed for extra high and high drive for the most demanding processes, as these are the furthest away from the radio. Only sticking to the app core pins should be fine.

    Best regards,

    Simon

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