Re: 89C51ED2

Jamie wrote:

>> Joerg wrote: >>> Jamie wrote: >>> >>>> Joerg wrote: >>>> >>>>> TT_Man wrote: >>>>> >>>>>> ">> Is this an Atmel part? >>>>>> >>>>>>>> If so, I would check the datasheets for updates. >>>>>>>> I know on their 8252/3 series, they made a change to the crystal cap >>>>>>>> requirements. >>>>>>>> Went from 30pf to around 5pf. Would occasionally cause improper >>>>>>>> startup/reset, and very slow operation if it did reset. If they >>>>>>>> changed the oscillator on ED2, that could very well be the problem. >>>>>>>> (?) >>>>>>>> >>>>>>> Hopefully not without changing the rev level and informing their >>>>>>> customers? Yikes, I sure hope not. >>>>>>> >>>>>>> -- >>>>>>> Regards, Joerg >>>>>> >>>>>> >>>>>> >>>>>> Joerg, I get regular updates on all atmel processor revision >>>>>> changes/data sheet spec changes, . In this respect, Atmel are 100% >>>>>> on the ball. >>>>>> AFAIK there have been none for this particular part...... >>>>> >>>>> >>>>> >>>>> That's good. I'd call them anyhow though. I once had an issue with >>>>> them regarding an 89C51 that was advertized at a higher clock than >>>>> it could do. IIRC it was touted as 16MHz but I could only get it to >>>>> run at 12MHz. They did apologize and other than that it ran in that >>>>> same design forever. In fact, it's still in production, over a >>>>> decade now. That's the beauty of 8051 designs, those things are like >>>>> the VW Beetle. >>>>> >>>> Thats not true. My bosses VW bug finally shit the bed not to long >>>> ago! :) >>>> >>> >>> Yeah, but how old was it by then? >>> >> Ok, its a 1968 :) >> >> Guess that last side collision he had didn't >> do the under structure to good! :) >> > >Well! 40 years is a respectable life for a car.

It certainly is. Question: Are there any current electronic parts, resistors, capacitors, inductors, diodes, transistors or ICs that have been available for 40 years.

Reply to
JosephKK
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[snip]

Sure. Lansdale...

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Still makes the MC1530/31 OpAmp I designed in 1964.

They also make other Motorola designs of mine, but I can't find them. They used to have a simple page listing analog parts, now they've gone modern, with frames and other crap :-(

...Jim Thompson

--
| James E.Thompson, P.E.                           |    mens     |
| Analog Innovations, Inc.                         |     et      |
| Analog/Mixed-Signal ASIC\'s and Discrete Systems  |    manus    |
| Phoenix, Arizona  85048    Skype: Contacts Only  |             |
| Voice:(480)460-2350  Fax: Available upon request |  Brass Rat  |
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                   Liberals are so ignorant...
         They don\'t even know the definition of ignorant
Reply to
Jim Thompson

Tons of them. I design with them every day. LM324, 2N2222, 2N3904, uA-whatever, LM331, LM339 and so on.

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Regards, Joerg

http://www.analogconsultants.com/

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Reply to
Joerg

I was going to say the LM741

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Reply to
Jamie

That one's pretty much out to pasture now. Although Digikey still has lots of them and they were ported to SOIC.

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Regards, Joerg

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Reply to
Joerg

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