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PICList Thread
'PIC12C508A programming troubles'
1999\01\07@085455 by Pekka Ritamaki

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I have got new PIC12C508A PICs.
The programming algorithm seems to be different than PIC12C508.
Some of my friends have problems with 508A programming.
Some programmers works  perfectly, some programmers do right only 3 out
4 right.
Some has troubles with each devices.
The common failure is: programmer gives Ok, but Code Protection bit is
turned
on (originally off) and chip is not working.
I have looked Microchip site for 508A pdf files, but I can't find
anything.
I want to hear others comments about 508A. I know that Picstart  has
upgrade for 508A ( 17C42 chip).

I have Tait-type parallel programmer and this works ok every time.

Pekka

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Probyte Oy Software/hardware design works. Tampere, Finland
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1999\01\07@124757 by Octavio Nogueira

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Hi Pekka,
Sometime ago, Microchip release a new programming algorithm
for 12C5X family. If your programmer is not updated you can have
some troubles.
By the way, ProPic 2 follow all the new specifications.

Regards,

Octavio
==============================================
Octavio Nogueira - .....nogueiraKILLspamspam@spam@propic2.com ICQ# 19841898
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-----Mensagem original-----
De: Pekka Ritamaki <prispamKILLspamSCI.FI>
Para: .....PICLISTKILLspamspam.....MITVMA.MIT.EDU <EraseMEPICLISTspam_OUTspamTakeThisOuTMITVMA.MIT.EDU>
Data: Quinta-feira, Janeiro 07, 1999 11:56
Assunto: PIC12C508A programming troubles


{Quote hidden}

1999\01\10@201239 by James Cameron

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Pekka Ritamaki wrote:
> The common failure is: programmer gives Ok, but Code Protection bit is
> turned on (originally off) and chip is not working.

I have experienced that with 12C509A when I used the 16F84 algorithm
instead of the 12C509 algorithm.  ;-(

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James Cameron                                      (@spam@cameronKILLspamspamstl.dec.com)

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