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The NXP LPC546xx series devices are flashless Cortex-M4 based IoT devices. They always boot from external memory (usually QSPI flash).


SWO for the NXP LPC546xx series devices is supported out-of-the-box.


In order to make SWO working correctly, min. J-Link software V6.86d is recommended. Previous versions are not guaranteed to work correctly with SWO.

Available pins

The NXP LPC546xx MCU provides to pins that can be used for SWO:

  • PIO0_8
  • PIO0_10

Sample projects

Please refer to LPCXpresso54608 Eval.