Which microcontroller does the Anycubic i3 Mega / Mega-S use?

The Anycubic i3 Mega (-S) stock mainboard uses the Atmega2560 microcontroller which has the following properties:

  • Architecture: AVR
  • Manufacturer: Microchip (who bought Atmel)
  • Flash: 256kb
  • RAM: 4kb
  • Stock firmware: Modified Marlin