>
> On Aug 12, 2009, at 8:29 PM, Thomas C Sefranek wrote:
>
>  ----- Original Message -----
>  From: Roger Weichert
>  To: Microcontroller discussion list - Public.
>  Sent: Wednesday, August 12, 2009 8:06 PM
>  Subject: [PIC] Advise on replacing an obsolete micro with a PIC
>
>
>
>  Hi Guys,
>
>  I do repairs to a range of control boards which are around 20 years  
> old but
>  still expensive to replace .. aprox $1200 . or to fit a replacement  
> system .
>  around $1500.
>
>  They are extremely reliable and generally very easy to repair if  
> they fail.
>
>  The only problem is when one comes in with a failed  
> microcontroller . the
>  part is not available. The label has a TI logo . CF 30140 .. N A  
> 9116 ..
>  Phillipines.
>
>
Post some close-up photos of the mystery chips.  If you can figure out  
what
the micro was, you can emulate it with another micro or with an FPGA.
We can help.
Gus
>
> Sounds like a GREAT little job.
> You didn't mention how many pins the Micro had.
> You may be able to skip the Xtal, using the internal clock in the PIC.
> I love these kinds of retrofits.
>
> Tom
>
> *
>  |  __O    Thomas C. Sefranek  tcs@cmcorp.com
>  |_-\<,_   Amateur Radio Operator: WA1RHP
>  (*)/ (*)  Bicycle mobile on 145.41, 448.625 MHz
>
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