NINA-B1 series - System Integration Manual
Do not apply an NFC field to the NFC pins when they are configured as GPIOs. Doing so may
cause permanent damage to the module. When driving different logic levels on these pins in GPIO
mode, a small current leakage will occur, make sure they are set to the same logic level before entering
into any power saving modes.
UBX-15026175 - R09
System description
Page 8 of 49