The first and the One

Release date: November 21, 1990 (Japan)
CPU: 16-bit / 21.47727 MHz Ricoh (5A22)
ROM: 256 kb, 512 kb, 1 Mb, 2 Mb, 4 Mb and 8 Mb cartridges
Display: 256 × 224 (progressive), 512 × 448 (interlaced)
Color palette: 32768 (15-bit), sprites 64 × 64 pixels
Audio: 16-bit ADPCM, 8 channels / 32 kHz 16-bit stereo

More information @ wikipedia.org
Super Nintendo Repair Manual @ ifixit.com