Summary datasheet for the tiny13, a 169 KB PDF whose s suffix identifies the abbreviated edition, matching the Atmel AVR ATtiny13 microcontroller. It typically includes the feature overview, 8-pin package pinouts, register summary and ordering codes. This makes it a convenient quick reference when identifying pin roles on a board. For fuse settings, electrical characteristics and the programming algorithm, use the full ATtiny13 datasheet, and confirm the chip marking matches before relying on any of it.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @datasheet. Enginerys does not host this file.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.