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Is it possible to Design and Fabricate an IC Chip at Home ?....

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steffi keb
Posted
21-Feb-2008 07:38 GMT
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New! Is it possible to Design and Fabricate an IC Chip at Home ?....

Hello masters,

Is it possible to Design and fabricate IC Chip at home using some sort of photo etching or some thing...may be it will not be perfect ie let it consume more power,too big in size and etc.But logically it should work.

I think it must work with keil stuff.

steffi

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Christoph Franck
Posted
21-Feb-2008 08:08 GMT
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New! RE: Is it possible to Design and Fabricate an IC Chip at Home ?....

Is it possible to Design and fabricate IC Chip at home using some sort of photo etching or some thing...may be it will not be perfect ie let it consume more power,too big in size and etc.But logically it should work.

It merely depends on how much money you are willing to spend. If that is not an issue, you can turn your home into a fab, complete with clean room and everything.

But then again, why spend upwards of seven figures to make an IC that's worth a few cents ? Especially when there's cheaper approaches, like using FPGAs.

I think it must work with keil stuff.

Keil does not sell any tools that are used during IC hardware development.

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Andy Neil
Posted
21-Feb-2008 09:20 GMT
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New! RE: Possible

Yes - of course it is, in theory, possible

But it would be entirely impractical and totally uneconomic!

You could try making thermionic valves (tubes) instead:
http://www.dailymotion.com/video/x3wrzo_fabrication-dune-lampe-triode_tech

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Tsuneo Chinzei
Posted
21-Feb-2008 10:39 GMT
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New! RE: Possible

Even if you would have vast of fund, it is impossible, unless you are living in deep countryside. In most countries, explosive gas (silane: SiH4) and toxic gas (phosphine: PH3, diborane: B2H6) for plasma CVD are regulated not to use in town. If you would apply classic liquid-phase doping, you cannot waste the toxic chemicals to drain. Hydrofluoric acid (HF) for etching also.

If you could happily clear these prerequisite, it takes enormous time to establish the optimal conditions for process. After all, the result is the ancient 4000 series CMOS, at most.

I swear, because it was my study life on our lab, though it was more than 15 years ago. :-)

Tsuneo

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erik malund
Posted
21-Feb-2008 13:45 GMT
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New! RE: Possible

Is it possible to Design and fabricate IC Chip at home using some sort of photo etching or some thing
are you aware that there are things like CPLD, FPGA ...

I think it must work with keil stuff.
'Keil stuff' does not work with 'chips' it program microcontrollers.

Erik

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Andy Neil
Posted
21-Feb-2008 13:48 GMT
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New! RE: I think it must work with keil stuff.

If you are designing it, then it would be up to you to make it so!

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Author
famrico lapsans
Posted
22-Feb-2008 09:59 GMT
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New! RE: I think it must work with keil stuff.

you could try a huge board with thousands of sot-23 transistors ;)

my serious answer...look into printed transistor method. It can be done if you can get the right materials. use silk print method.

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Author
Andy Neil
Posted
22-Feb-2008 10:33 GMT
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New! RE: look into printed transistor method

Why?

Surely FPGA or similar has to be the way to go for home-made "custom" chips?!

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Author
Per Westermark
Posted
22-Feb-2008 10:45 GMT
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New! RE: look into printed transistor method

Surely FPGA or similar has to be the way to go...

That wouldn't be home-made - jsut working :)

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Author
wh hsun
Posted
25-Feb-2008 08:23 GMT
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New! start with a diode and go from there

Many old-timers made their first radio using a razor & safety-pin (Foxhole radio)
This is a home-made diode

http://bizarrelabs.com/foxhole.htm

when you have a diode going, go on to make a transistor, then go on an a circuit.

easy ;)

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Author
Andy Neil
Posted
25-Feb-2008 15:52 GMT
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New! RE: start with a diode and go from there

Does anyone know how many transistors Intel used in the original 8032?

It would then be interesting to extrapolate the size of an 8032 built from individual hand-made, point-contact transistors...

Memory would be hand-woven magnetic core, of course...

:-)

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Author
Per Westermark
Posted
25-Feb-2008 16:08 GMT
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New! RE: start with a diode and go from there

8008 had 3500 transistors.
8080 had 6000 transistors.
8085 had 6500 transistors.

The 8080 was a quite general 8-bit processor, but without any peripherials. The 8085 integrated (among other things) the clock generator.

It wouldn't be unreasonable to think that the original 8032 had somewhere around 5-6k transistors. The core is way simpler than the 8080 but to that comes the built-in devices for standalone microcontroller use.

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Author
Andy Neil
Posted
25-Feb-2008 16:02 GMT
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New! RE: start with a diode and go from there

Get the book on ebay: http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=130200316793

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