I'm writing an engineering analysis for a product that has a 100-pin micro. Unfortunately the manufacturer markings have been removed and I'd like to at least know what general micro family it belongs to. Below is a pinout showing where the VDD (V) and Ground (G) pins are located, plus what I believe to be the SWD pins since the TagConnect seems to follow Cortex norms.

If anyone recognizes what this might be (in general, of course) please let me know.

 

What leads you to believe it is a commercially available part as opposed to a custom part made for a single customer? Were you planning to reverse engineer the entire schematic as part of your analysis?

 

I am sure that you could identify much more pins than the few you show. Otherwise, why to bother?

 

What leads you to believe it is a commercially available part as opposed to a custom part made for a single customer? Were you planning to reverse engineer the entire schematic as part of your analysis?

The product is low-volume and would not support the cost of a custom chip. I am not reverse-engineering the entire schematic, too much work. My interest is (a) what micro are they using and (b) is the architecture direct-sampling or baseband demodulation? I've determined the latter.

I am sure that you could identify much more pins than the few you show. Otherwise, why to bother?

I do not see any other easy pin usages like USB or oscillator inputs. It would take a lot of effort to trace out other pins.

 

The product is low-volume and would not support the cost of a custom chip. I am not reverse-engineering the entire schematic, too much work. ...

That is exactly what they are hoping you would decide. You might be surprised what people will do to hide what they consider the family jewels.