I have a 20026SCPB-T23C that was originally from a payphone. I bought it at a surplus store. Can't find a datasheet as it is a custom part and noritake won't help me. I was able to figure out some of the commands, but not all. If anyone knows where I can get a datasheets or an Arduino library, that would be great. I found some post on here from 2006 but it is for the parallel version. The T23A. I'd link it, but this is my first post.