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Electronics Forum / Basics / October 2007


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Identifing a chip.

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Baron - 28 Oct 2007 19:44 GMT
Hi Guys,

I am trying to find out who manufactures a chip, two actually.  One chip
has the logo "MX" on it and the other has "MIRA".  The numbers on
the "MX" chip are "mq44305, 29lv160bbtc-90 which I suspect is a 16Mb
ram chip.  The other one is marked "MIRA" and has P2V64S40DTP and
4309LA110-7 on it.   Google comes up with a weird web page for the
first one that doesn't even correspond to any of the markings and a
load of junk for the second one.

Any clues, anyone ?  

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Best Regards:
                    Baron.

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Jamie - 28 Oct 2007 20:05 GMT
> Hi Guys,
>
[quoted text clipped - 7 lines]
>
> Any clues, anyone ?  

try that to start with..

http://www.classiccmp.org/rtellason/logos/semiconductorlogos.html

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"I'm never wrong, once i thought i was, but was mistaken"
Real Programmers Do things like this.
http://webpages.charter.net/jamie_5

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Baron - 28 Oct 2007 20:21 GMT
>> Hi Guys,
>>
[quoted text clipped - 12 lines]
>
> http://www.classiccmp.org/rtellason/logos/semiconductorlogos.html

Hey Jamie, Thanks.  I didn't know about that one.  Bookmarked for future
reference.  I found "MX" but not the other one.    

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Best Regards:
                    Baron.

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Jamie - 28 Oct 2007 20:51 GMT
>>>Hi Guys,
>>>
[quoted text clipped - 15 lines]
> Hey Jamie, Thanks.  I didn't know about that one.  Bookmarked for future
> reference.  I found "MX" but not the other one.    

I found this.
http://www.elektroniknet.de/fileadmin/freigaben/m&t/SH2/Adressen_SH022006.pdf
A list of lots of venders.
www.mira-electronic.de
 hope you can read german! :)
don't know if that is what you want.

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"I'm never wrong, once i thought i was, but was mistaken"
Real Programmers Do things like this.
http://webpages.charter.net/jamie_5

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Baron - 28 Oct 2007 20:59 GMT
>>>>Hi Guys,
>>>>
[quoted text clipped - 18 lines]
>>
> I found this.

http://www.elektroniknet.de/fileadmin/freigaben/m&t/SH2/Adressen_SH022006.pdf
> A list of lots of venders.
> www.mira-electronic.de
>   hope you can read german! :)
> don't know if that is what you want.

Thats brilliant, many thanks.  I don't know how you people do it !  I
tried all sorts of combinations in google without any leads at all.

Anyway thankyou once again.  It is what I want and my German is quite
poor. ;-)  So I hope that Google will translate for me.

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Best Regards:
                    Baron.

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Baron - 28 Oct 2007 21:11 GMT
>>>>>Hi Guys,
>>>>>
[quoted text clipped - 19 lines]
>>>
>> I found this.

http://www.elektroniknet.de/fileadmin/freigaben/m&t/SH2/Adressen_SH022006.pdf
>> A list of lots of venders.
>> www.mira-electronic.de
[quoted text clipped - 6 lines]
> Anyway thankyou once again.  It is what I want and my German is quite
> poor. ;-)  So I hope that Google will translate for me.

Jumping in with both feet again. :-(   Wrong "MIRA"  the German company
only does surface mount passives and not RAM chips.

I'm going to have a look at some TSOP ram and see if I can get a little
further.

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Best Regards:
                    Baron.

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Eeyore - 28 Oct 2007 21:23 GMT
> Jumping in with both feet again. :-(   Wrong "MIRA"  the German company
> only does surface mount passives and not RAM chips.
>
> I'm going to have a look at some TSOP ram and see if I can get a little
> further.

Did you actually try Google ?

It looks like a 64 Mbit SDRAM chip.
http://www.google.com/search?&q=P2V64S40DTP

www.deutron.com.tw/data_sheets/sdram/p2v64s_0dtp26_06034.pdf

MIRA seems to be a trademark of Deutron Electronics Corp of  Taiwan.

Graham
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Baron - 28 Oct 2007 21:52 GMT
>> Jumping in with both feet again. :-(   Wrong "MIRA"  the German
>> company only does surface mount passives and not RAM chips.
[quoted text clipped - 12 lines]
>
> Graham

Thanks Graham.   Yes I did but I put "MIRA p2v64s40dtp"  and I see you
didn't.  I just tried it again and it came back with the info you have
just given me.  It never occurred to me to just put in the part no:

Much appreciated.

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Best Regards:
                    Baron.

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Eeyore - 28 Oct 2007 22:39 GMT
> >> Jumping in with both feet again. :-(   Wrong "MIRA"  the German
> >> company only does surface mount passives and not RAM chips.
[quoted text clipped - 16 lines]
>
> Much appreciated.

You're welcome.

I've noticed that tinkering with the 'search term' can give very widely
different results.

Graham
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Eeyore - 28 Oct 2007 20:32 GMT
> Hi Guys,
>
> I am trying to find out who manufactures a chip, two actually.  One chip
> has the logo "MX" on it

Macronix.

Graham
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Baron - 28 Oct 2007 20:38 GMT
>> Hi Guys,
>>
[quoted text clipped - 4 lines]
>
> Graham

Thanks Guys.   I got the data sheet on the "MX" chip it seems that its a
3volt 16Mb flash.  Which means that the other one must be the ram chip!

I wonder do these have a standard pin out ?

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Best Regards:
                    Baron.

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