AVR128

reference

Arduino code pending

• https://github.com/SpenceKonde/DxCore

datasheet

• https://ww1.microchip.com/downloads/en/DeviceDoc/AVR128DB28-32-48-64-DataSheet-DS40002247A.pdf

development board from official microchip

• https://www.microchip.com/DevelopmentTools/ProductDetails/PartNO/EV35L43A
• schematic - https://ww1.microchip.com/downloads/en/DeviceDoc/AVR128DB48_Curiosity_Nano_Schematics.pdf

Demo code search AVR SDK

BSP

• LED PC6 / PB3
• Button PC7 / PB2
• UART3 PB0 / PB1