Data Sheet

NINA-B41-data sheet
No. Name I/O Description Remarks
7 GREEN/
SWITCH_1
I/O This signal is multiplexed:
GREEN: System status signal.
SWITCH_1: Multiple functions
Active low.
GREEN: Should be routed to an RGB LED.
SWITCH_1: See section System control signals for more
information.
8 BLUE O BLUE system status signal Active low, should be routed to an RGB LED
9 VCC_IO I Module I/O level voltage input Must be connected to VCC on NINA-B41
10 VCC I Module supply voltage input 1.7-3.6 V range
11 RSVD - RESERVED pin Leave unconnected
12 GND - Ground
13 ANT I/O Tx/Rx antenna interface 50
Ω
nominal characteristic impedance, only used with
NINA-B410 modules
14 GND - Ground
15 RSVD - RESERVED pin Leave unconnected
16 UART_DTR O UART data terminal ready signal Used to indicate system status
17 UART_DSR I UART data set ready signal Used to change the system modes
18 SWITCH_2 I Multiple functions Active low, see section System control signals for more
information.
19 RESET_N I External system reset input Active low
20 UART_RTS O UART request to send control signal Used only when hardware flow control is enabled
21 UART_CTS I UART clear to send control signal Used only when hardware flow control is enabled
22 UART_TXD O UART data output Also used by the bootloader
23 UART_RXD I UART data input Also used by the bootloader
24 IO_24 I/O uX IO pin Can be used for manual digital I/O
25 IO_25 I/O uX IO pin Can be used for manual digital I/O
26 GND - Ground
27 IO_27 I/O uX IO pin Can be used for manual digital I/O
28 NFC1 I/O NFC pin 1
29 NFC2 I/O NFC pin 2
30 GND - Ground
31 RSVD - RESERVED pin Leave unconnected
32 IO_32 I/O uX IO pin Can be used for manual digital I/O
33 IO_33 I/O uX IO pin Can be used for manual digital I/O
34 IO_34 I/O uX IO pin Can be used for manual digital I/O
35 IO_35 I/O uX IO pin Can be used for manual digital I/O
36 IO_36 I/O uX IO pin Can be used for manual digital I/O
37 IO_37 I/O uX IO pin Can be used for manual digital I/O
38 IO_38 I/O uX IO pin Can be used for manual digital I/O
39 IO_39 I/O uX IO pin Can be used for manual digital I/O
40 IO_40 I/O uX IO pin Can be used for manual digital I/O
41 IO_41 I/O uX IO pin Can be used for manual digital I/O
42 IO_42 I/O uX IO pin Can be used for manual digital I/O
43 IO_43 I/O uX IO pin Can be used for manual digital I/O
44 IO_44 I/O uX IO pin Can be used for manual digital I/O
UBX-20035327 - R01
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3Pin definition Page 13 of 34
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