[vcf-midatlantic] Can anyone identify this mystery IC - Who can do die photographs here ?!

Douglas Crawford touchetek at gmail.com
Sun Aug 21 22:57:45 UTC 2022


If no one local offers, then OK!

On 8/21/2022 6:43 PM, Dave McGuire via vcf-midatlantic wrote:
> 
>    I can image the die.
> 
>           -Dave
> 
> On 8/21/22 18:11, Douglas Crawford via vcf-midatlantic wrote:
>> Perfect. 2 or 3 is a close enough for now.
>> That's 12 to 18 transistors, estimated range.
>>
>> Calling for someone that can image a die!
>>
>> Thanks Dave.
>>
>>
>> On 8/21/2022 5:32 PM, Dave McGuire via vcf-midatlantic wrote:
>>> On 8/21/22 17:07, Douglas Crawford via vcf-midatlantic wrote:
>>>> Ah, so the red lines are not b/c/e?
>>>> That's what I was first thinking.
>>>> Here me trying to make some sense of it
>>>> https://i.imgur.com/gOZujMR.jpg
>>>>
>>>> Red lines inputs?
>>>> Could the blue things be capacitors?
>>>
>>>    I do not think they're capacitors.  Remember, this is an IC; think 
>>> three-dimensionally.  All we can see from that picture is the upper 
>>> metallization layer, where connections to silicon are made.  There 
>>> are several layers below that.
>>>
>>>> Maybe purple outputs?
>>>>  From this view... OR gates?
>>>
>>>    Possible.
>>>
>>>> At least I have some agreement now that several learned eyes
>>>> see transistors. It might be enough for our purposes
>>>> to just have a good guess of how many transistors there
>>>> are, and be able to identify them.  What they are doing
>>>> is a less important detail for our purposes at this
>>>> point in the exhibit.
>>>
>>>    Yes, there are definitely transistors there.
>>>
>>>> So how many do to think you see in each group?
>>>> We may never know for sure, but I'll probably run with
>>>> your number as an estimate.
>>>
>>>    Well, as I said, we'd need a higher-resolution image with better 
>>> lighting.  We need to be able to see a layer or two below that.  I'm 
>>> guessing there are two or three.
>>>
>>>                -Dave
>>>
> 
> 


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