u-blox EVK-NINA-B50, User Manual

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EVK-NINA-B50 - User guide
UBX-23007761 - R02 Interfaces and peripherals Page 22 of 37
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4.2 Arduino interface
The EVK-NINA-B50 includes a set of pin headers and mounting holes that are compatible with certain
Arduino or Arduino inspired shields. However, in EVK-NINA-B50 a reduced number GPIOs are available.
⚠
NINA-B50 is not fully compatible with Arduino due to reduced number of GPIOs.
Figure 16 shows the layout of the Arduino interface described in Table 11 . For information about
compatible shields for EVK-NINA-B50, see also Arduino shield compatibility .
Figure 16: Pin headers that are compatible with some Arduino shields
Conn. Pin
No. Arduino
pin Description NINA-B4
schematic
net name* K32W
pin Alternate functions and notes
J1 1 N/C Not Connected - - Not connected
2 IOREF I/O reference voltage level.
Selectable by user to 1.7
– 3.6 V
VDD_IO - See also Selecting the power
configuration jumpers
3 RESET NINA reset signal input. Active low
logic RESET_N PTD0
4 3.3V 3.3 V DC regulated supply output 3V3 -
5 5V 5 V regulated supply output 5V - Cannot be used as supply input, use
VIN instead. Only supplied by USB
VBUS.
6 GND Ground GND GND
7 GND Ground GND GND