Data Sheet

NINA-B41-data sheet
3Pin definition
3.1NINA-B41 series pin assignment
The pin-out as shown in Figure 2 describes the pin configuration used by the u-connectXpress
software.
Figure 2: NINA-B41 series pin assignment (top view)
The grey pins in the center of the modules are GND pins. The outline below the dotted line as shown
in Figure 2, the antenna area of the NINA- B410 and NINA-B416 begins. The four grey pins with
dotted outlines in the antenna area are GND pins and are only present on NINA-B416.
• Follow this pin layout when using the u-connectXpress software. No interfaces can be moved or
added.
• 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. While using the u-connectXpress software, these pins will
always be set to the NFC mode. See section Digital pins for more information.
No. Name I/O Description Remarks
1 RED O RED system status signal Active low, should be routed to an RGB LED
2 XL1 I/O u-connextXpress (uX) IO pin
Connection for 32.768 kHz crystal
3 XL2 I/O u-connextXpress (uX) IO pin
Connection for 32.768 kHz crystal
If not used ground XL1 and XL2.
If an external clock source is used.
Apply external low swing signal to XL1, ground XL2.
Apply external full swing signal to XL1, leave XL2
grounded.
4 IO_4 I/O uX IO pin Can be used for manual digital I/O
5 IO_5 I/O uX IO pin Can be used for manual digital I/O
6 GND - Ground
UBX-20035327 - R01
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3Pin definition Page 12 of 34
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