The figure below shows the megaAVR®
0-series 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 1. megaAVR® 0-series Overview
Devices with different Flash memory sizes typically also have different
SRAM and EEPROM.