User's Manual

NINA-B1 series - Data Sheet
UBX-15019243 - R05 Early Production Information Pin definition
Page 14 of 35
3 Pin definition
3.1 Pin assignment
The pin-out described in Figure 2 below is an example pin-out that shows the module in an unconfigured state.
Alternatively, if you use the u-blox NINA-B11x firmware, refer to the pin-out in section 3.2.
A = Analog function capable pin
Figure 2: NINA-B1 series pin assignment (top view)
All digital or analog functions described in this data sheet may be freely assigned to any GPIO pin. Analog
functions are limited to analog capable pins. Signals marked red in Figure 2 are not freely assignable but
locked to a specific pin.
GPIO pins 16, 17, 18 and 20 are connected to pins located close to the radio part of the RF chip. It is
recommended to avoid using these pins for high speed digital interfaces or sinking/sourcing large currents
through them. Doing so may affect RF performance.
Do not apply an NFC field to the NFC pins when they are configured as GPIOs as it can cause
permanent damage to the module. When driving different logic levels on these pins in GPIO mode, a
small current leakage will occur. Ensure that they are set to the same logic level before entering into any
power saving modes. See section 4.2.6 for more information.