Fairchild? P52AB

I've lost the schematic for my Technological Arts Adapt12SSIM board. They don't have it available for download (very annoying). You get one with the board and that's it. But I bought it years ago and the sheet has disappeared. So I'm attempting to reverse engineer it a bit to see how to use some parts on the board.

The chip I'm looking at is a 14-pin SOIC (I think it's SOIC anyway - it's surface mount). Very small. It's labelled as follows:

Line 1: Stylized F (Fairchild?) P52AB

Line 2: V132

Anyone know what it is, and where I can find a datasheet? I've Googled hard and see it listed here and there, but no datasheet links that work.

If I get no answers I'll have to dig through the swamp again to try to find my original schematic copy, or bug TechArts for another.

hotwaterwizard said:

https://www.electro-tech-online.com/custompdfs/2008/10/Adapt9S12Cman-1.pdf

Click to expand...

Wrong board. The one I have is this one. It's not a MCU board. It's an add-on board that has the proper pinout to be plugged into a backplane with the Adapt Series boards, or plugged directly into one.

I have it plugged into a breadboard with a 50-pin adapter, being controlled with a 18F448 at present.

The chip in question is the one with the red dot (not big enough, but it's there if you look close).

Here's a tight macro shot:

The link Wants me to sign in to view it

hotwaterwizard said:

The link Wants me to sign in to view it

Click to expand...

Works normally here. I've never signed into their web-site, ever. Been doing business there for many years.

Umm... Which link are we talking about?

See Page 4
https://www.electro-tech-online.com/custompdfs/2008/10/AdaptFamilyPinoutsH1.pdf

**broken link removed**

Index of /docs

hotwaterwizard said:

See Page 4
https://www.electro-tech-online.com/custompdfs/2008/10/AdaptFamilyPinoutsH1-1.pdf

**broken link removed**

Index of /docs

Click to expand...

Heh. No, no and no. I have the "datasheet", which consists only of a drawing of the board with the connectors and major components pointed out and the pinout for the board. But without knowing what that chip is (and what it does) I'm lost on a few things.

I can get servos to work on connectors 3 and 4, but not 1 and 2 (they have current sensing). I assume one of the chips has something to do with this - one is a LMV324 op-amp. Once I have a datasheet for the other one I can trace things and see what connects how. Then I can draw my own schematic. What fun!

okay i get it

OK I'm done looked for about 4 hours. all i could find was.
14-pin SOIC P52AB V132
P52AB FAIRCHILD

74F164A-P52AB

https://www.fairchildsemi.com/ds/74/74F164A.pdf


P52AB/MM74HC08M

https://www.fairchildsemi.com/ds/MM/MM74HC08.pdf

SOIC-14

hotwaterwizard said:

OK I'm done looked for about 4 hours. all i could find was:

Click to expand...

Thanks for trying.

I had a good close look at the board. I can't trace things on it. There's too many connectors covering the traces to tell where things go. Guess I'll hound TechnoArts for a schematic copy.