Datasheet

31/5/2019 https://store.arduino.cc/usa/datasheet/index/index/url_key/nano-33-ble-sense-with-headers-reseller/
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22 D4 Digital GPIO
23 D5/PWM Digital GPIO; can be used as PWM
24 D6/PWM Digital GPIO; can be used as PWM
25 D7 Digital GPIO
26 D8 Digital GPIO
27 D9/PWM Digital GPIO; can be used as PWM
28 D10/PWM Digital GPIO; can be used as PWM
29 D11/MOSI Digital SPI MOSI; can be used as GPIO
30 D12/MISO Digital SPI MISO; can be used as GPIO
(*) As opposed to other Arduino Nano boards, pins A4 and A5 have an internal pull up and default to be used as an I
2
C Bus so usage as analog inputs is not
recommended. Opposed to Arduino Nano boards that support 5V operation, the 5V pin does NOT supply voltage but is rather connected, through a jumper, to the
USB power input.
On the bottom side of the board, under the communication module, debug signals are arranged as 3x2 test pads with 100 mil pitch. Pin 1 is the bottom left one
with the USB connector on the left and the test pads on the right.
Pin Function Type Description
1 +3V3 Power Out Internally generated power output to be used as voltage reference
2 SWD Digital nRF52480 Single Wire Debug Data
3 SWCLK Digital In nRF52480 Single Wire Debug Clock
5 GND Power Power Ground
6 RST Digital In Active low reset input