DOA 7seg 2803

DOA_7seg_2803

LED and 7 Segment Display Controller for displays with Common Cathode.

Deprecated Design, replaced by DOA_7seg Rev.1

Features

• for common cathode displays
• 32 displays per board or 256 LEDs or any combination
• small boardsize: 80x100mm or 1/2 Euro size.
• dimming possible
• no ghosting
• hi current displays supported (25mA max. per segment)
• all segments individually controllable
  • ie. the dot
  • allows you to create certain characters, like a capital 'A' or 'C', a lower case 'd',...
  • individual segments fully controllable by host software
• of course, instead of 7segment displays you can also use LEDs (8 LEDs instead of one display, 16 instead of two,...)
• controlled via the PHCC DOA bus with the AP2P Protocol.
  • multiple display controllers can be connected to the DOA bus...
  • along with other DOA bus devices (up to 256 devices currently)

Schematic and Board Layout

Rev.0 Schematic

Rev.0 Layout

Bill of Materials

The BOM is here: bom_doa_7seg_2803.txt
This list includes prices and links to to online catalogue pages of my primary source of electronics components, Reichelt Elektronik