Family Overview

The figure below shows the AVR® EA Family of devices, laying out pin count variants and memory sizes:

Vertical migration is possible without code modification, as these devices are pin and feature compatible
Horizontal migration to the left reduces the pin count and, therefore, the available features

Figure . AVR® EA Family Overview

Devices with different Flash memory sizes typically also have different SRAM sizes.

A device name in the AVR® EA Family decodes as follows:

Figure . AVR® EA Family Device Designation