Family Overview

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

Vertical migration is possible without code modification, as these devices are fully 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.

The name of a device in the AVR® EA Family is decoded as follows:

Figure . AVR® EA Family Device Designations