AVR

AVR is 8-bit architecture from Atmel (Microchip) used most famously in various Arduino boards. Due to its low resources, only few MCUs in this line are supported.

• ATmega2560
  • UART pinout
  • I2C pinout
• ATmega16u2
  • UART pinout
• AT90USB1286
  • UART pinout
  • I2C pinout

ATmega2560

• 4kB of EEPROM memory
• 256kB of Flash memory
• 8kB of RAM
• Supported interfaces:
  • 2 UART channels
  • 1 I2C channel

UART pinout

Channel	Rx	Tx
0	E0	E1
1	D2	D3

I2C pinout

Channel	SDA	SCL
0	D1	D0

ATmega16u2

• 0.5kB of EEPROM memory
• 16kB of Flash memory
• 0.5kB of RAM
• Supported interfaces:
  • 1 UART channel

Note: This MCU can only be used as USB link between the MCUs which don't support USB such as ATmega2560 since regular OpenDeck firmware doesn't fit in this MCU.

UART pinout

Channel	Rx	Tx
0	D2	D3

AT90USB1286

• 4kB of EEPROM memory
• 128kB of Flash memory
• 8kB of RAM
• Supported interfaces:
  • 1 UART channel
  • 1 I2C channel

UART pinout

Channel	Rx	Tx
0	D2	D3

I2C pinout

Channel	SDA	SCL
0	D1	D0