"Smart" LED display

[ChefGroovy]

Ok I have several displays, very similar physically to regualar 7-segment displays. Can see a vague outline of a figure 8, and looks like a microproccessor is embedded in it.

I have been trying and trying and can't seem to figure it out.

the part number is Dialco 745-0007 and closest I could find on a datasheet was at

http://www.americanmicrosemi.com/products/specs/745-0007.phtml

The goal is to use 2 of them as a hex output to a 90S2313 project. Looong story. And I know I could use traditional 7 segment displays for just hex, but wanted the "cool factor". I know one thing, this smart display is smarter than me.

Anyone ever ran into such a beast?

Dan Shaffer

 

[felixc]

These LED displays, like the TIL311, are not smart. All they do is integrating a hex-to-7-segment decoder and a latch into the same package. That explains the high price of these beasts. But the digits are small.

If you don't have the pinout, don't lose your time on it. (try to sell them instead) Did you ask a pinout to AMS? Instead, get a seven-segment display, with larger segments, and use a CD4511 to perform a similar functionality.

And if you have a microcontroller driving your display, do the seven segment conversion in software and use an octal latch to drive the segments.

 

[ChefGroovy]

Thanks for the info, was able to figure out the pinouts and got em working. Was listed in ExpressPCB as a TIL311. The integrated latch in them definatly makes things on the circuit side easier, since the software has a lot of other stuff going on to update it very often.

I didn't bother to look up how expensive they were, we bought a surplus of components and had a few dozen of these in it, figured would put em to some use.

Now what to do with 3000 green leds.. hmmmm haha

Thanks again