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 AVR128DA28 comes in 28 pins SPDIP, SSOP and SOIC. It has 128KB of flash and 28 pins.
The PDIP is ideal for hobbyists. The difference with the DB series is that there is no MVIO (multi voltage IO).