Data Sheets 
ATmega128(L) Preliminary Summary (16 pages, 09/01)
ATmega128(L) Preliminary (Complete) (331 pages, 09/01)
AT90S8515 Summary (13 pages, 09/01)
AT90S8515 (Complete) (112 pages, 09/01)
AT90S8515 Rev. B Errata (4 pages, 09/01)
AT90S8515 Rev. C Errata (4 pages, 09/01)
AVR Instruction Set (133 pages, 06/99)