This page is intended to show the outline of the chip and to provide additional information that might not be clear from the data sheet.

Read the generic info about Xtiny , MEGAX and AVRX

 

The AVR16DD20 comes in SOIC-20 and VQFN20. It has 16KB of flash and 20 pins. It has 2KB SRAM and 256 bytes EEPROM.