All Curiosity Nano boards follow a standardized pinout for key functions, as illustrated in
the image below. Specific pins are reserved for the debugger interface, which supports
programming protocols such as UPDI, SWD, or ICSP. Additional dedicated pins are provided for
the CDC virtual serial port and the Data Gateway Interface (DGI).
Serial communication interfaces are consistently mapped to designated pins:
UART
I2C
SPI
The CDC UART may share pins with the serial communication section, be available on
dedicated pins located directly below the serial section, or, in some cases, be accessible
only through the debugger section.
Analog capability is guaranteed only for pins within the analog section. At least two of
these pins support PWM output, and some kits may offer a third optional PWM pin.
The placement and availability of additional features, such as extra serial or analog
functions, may vary depending on the specific Curiosity Nano board. For this reason, only GPIO
functionality is guaranteed for pins outside the sections mentioned above.
Tip: The location of debugger, serial
communication, and analog pins on the edge connector is consistent across all Curiosity Nano
boards, ensuring compatibility and ease of use.
Figure 3-3. Curiosity Nano Pinout
Info: Features shown in parentheses are optional and may not be available on all Curiosity Nano
boards.
The online versions of the documents are provided as a courtesy. Verify all content and data in the device’s PDF documentation found on the device product page.
