3.4.1 Feather Connector

The AVR-IoT Cellular Mini development board features a Feather style edge connector. The connector is designed to be compatible with Adafruit’s Feather/FeatherWings.

Figure 3-5. Feather Connector Pinout
Some connections are shared with other peripherals. See the table below:
Table 3-14. Shared connections
PinsDescriptionShared Functionality
AREFReference analog voltage input for AVR128DB48Shared through open solder-strap with PD7 (A5)
SPI—25CSM04
I2C—MCP9808, Qwiic® connector
DBG1, DBG2Debug GPIO channelsOn-Board Debugger Connections