Block Diagram

The purpose of this document is to collect the various peripheral tech briefs (including the AVR1000b Technical Brief), which describe how to use C-code on new AVR® devices. These documents are particularly useful for Microchip tinyAVR® 0- and 1-series, and megaAVR® 0-series devices.
Figure . Block Diagram megaAVR® 0-series
ADC DescriptionAC DescriptionUSART descriptionTCA descriptionSPI descriptionTCB descriptionPORTS DescriptionGPIOR DescriptionRTC DescriptionCCL Description
Note:
  1. The red boxes indicate the peripherals with associated technical briefs in this document. In the online version, these boxes are links.

The ATmega4809 microcontrollers of the megaAVR® 0-series are using the AVR® processor with hardware multiplier, running at up to 20 MHz, with a wide range of Flash sizes up to 48 KB, up to 6 KB of SRAM, and 256 bytes of EEPROM in 28-, 32-, 40-, or 48-pin package. The series uses the latest technologies from Microchip with a flexible and low-power architecture including Event System and SleepWalking, accurate analog features and advanced peripherals.

Important: The 40-pin version of the ATmega4809 is using the die of the 48-pin ATmega4809 but offers fewer connected pads. For this reason, the pins PB[5:0] and PC[7:6] must be disabled (INPUT_DISABLE) or enable pull-ups (PULLUPEN).