Finding a Dallas DS1287 replacement

[Chuck(G)]

Dallas didn't even bother with a circuit board--just bend up the pins on the DIP and soldered the appropriate component in place. This has been discussed here at least twice.

But we were discussing the incompatibility between the DS1297 and the DS12887--Dallas claims that the 887 is a direct replacement, but that's not entirely true. (for DS12887, read DS12885--for DS1287, read DS1285)

 

[lowen]

As I recall, it has to do with errors in addressing things, as well as some undocumented stuff with the DS1287 that the DS12887 doesn't do.

On a good note, I can confirm that the DS12887A is a good replacement for the DS1287 in the Tilmann Reh CPU280 I'm working on. But even if it weren't, we have the full source code and can fix it for the CPU280 boot loader.

 

[yuhong]

Not sure you'd even need a circuit board. Just bend the crystal pins up and solder it directly onto them and do the same with the 3V battery pins. Could eve just put on a 2 pin header and then it could be used with any 3v source.

http://www.vogons.org/viewtopic.php?f=46&t=37404&start=120