Questions tagged [integrated-circuit]

An integrated circuit (also referred to as an IC, a chip, or a microchip) is a set of electronic circuits on one small plate of semiconductor material, normally silicon.

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1answer
130 views

Help to identify unknown IC from Microchip

I am asking here hoping that someone may have experience identifying these kind of old chips. Googling the reference just shows some forums with people in same situation as me. IC reference: 25072478 ...
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0answers
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Identify a 320V DC Brushless IC Power MOSFET(?) Driver

I need some help identifying this IC. It comes from a bladeless fan. It is presumably a 230V Power MOSFET(?) element connected to the FCM8201 Three-Phase Sine-Wave BLDC Motor Controller. The thick ...
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How to hide / obfuscate the function of an IC?

Let's say I have an IC (integrated circuit) and I want to hide it's function. What would be best practice to do that? Removing the markings with sandpaper or acid? (E.g. atmega328, ATtiny85,... ) ...
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Analog Devices chip identification Y 4 A

I've been trying to identify this little fellow: The symbol indicates Analog devices. But the Cryptic "Y 4 A" is giving me a headache. Ive searched throughout the internet for the labelling norms of ...
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2answers
365 views

Thought I found serial port - broke embedded device instead! Help?

Well another weekend has gone by and my tinkering has caused another device to (potentially) bite the dust. I've been playing around with a couple of Slingboxes, an M1 and a 500. Today was the M1. I ...
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7k views

Reverse engineering modern Intel CPUs

Are there open source projects that completely restore the inner circuitry of modern Intel CPUs? Is it simply possible, or are circuits closed and/or protected by proprietary technology?
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1answer
296 views

Any Home Made Alternatives to X-Ray ICs?

I am on the hunt for several ICs by searching for the markings on them. But sometimes the markings are just too vague and I cannot really guarantee that the IC I found is the IC I am looking for. I ...
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3answers
448 views

Physically auditing the layout of transistors inside a processor made at 22mm process die

What is necessary to check that the layout of all the 35000 transistors on a given physical processor was not tampered with, assuming the normal layout and its dispositions on the die are extensively ...
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1answer
43 views

Exposing the connectors in a package on package

To analyze the communication protocol between two chips running unknown firmware, we eavesdrop into the communication bus between the chips. In the ideal case, this is “just” a matter of matching ...
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1answer
219 views

How should I go about investigating an IC's functionality without destroying it?

I found a 14 pin integrated circuit with no visible markings. I have no information about its functioning. How should I go about trying to explore its functionality without destroying it ? I have a ...
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1answer
340 views

What kind of information can i get from reverse engineering an integrated circuit package

I've seen numerous examples of people essentially dissolving away the resin from integrated circuits in boiling high strength acid in order to expose the raw silicon chip underneath. My general ...