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???
01/19/05 04:39
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 		 #85266 - Errata!
Responding to: ???'s previous message
Craig Steiner said:
Jan Waclawek said:
there is a recommended circuit there; the software can be found with a bit of searching at
ftp://ftp.dalsemi.com/pub/microcontroller/dev_tool_software/mtk/


I just recently made a circuit that includes ISP for the DS89C420 and it works just as advertised with the software you cited above.

Regards,
Craig Steiner


Note that Dallas claims signficant errata with respect to the loader for the DS89C420 in both the A1 and A2 revision levels:

http://pdfserv.maxim-ic.com/errata/89C420A1.pdf
http://pdfserv.maxim-ic.com/errata/89C420A2.pdf

I have used the A2 device in a prototype without experiencing the issue described in item 1 of the A2 errata sheet, but it would be prudent to look this over and consider your design carefully.

You might also want to consider migration to the DS89C430, which although it has its own set of errata, has some nice perks (i.e., in-application programming) but does not cost much more.

--Sasha Jevtic

List of 34 messages in thread
TopicAuthorDate
Need programmer for DS89C430 & DS80C310            01/01/70 00:00      
   The datasheet for 430 says:            01/01/70 00:00      
   Or use a terminal program            01/01/70 00:00      
   ... or do it the easiest way...            01/01/70 00:00      
      It works fine            01/01/70 00:00      
         Errata!            01/01/70 00:00      
   Does NOT work!!!Help!            01/01/70 00:00      
      Or can you tell me            01/01/70 00:00      
         DS89C420 ISP            01/01/70 00:00      
   Or maybe            01/01/70 00:00      
      I meant crystall at 4 Mh.            01/01/70 00:00      
      NOOOO            01/01/70 00:00      
         Did you look at PCB Layout?            01/01/70 00:00      
            No            01/01/70 00:00      
               I don't understant much            01/01/70 00:00      
   Heelpp!!            01/01/70 00:00      
      bad title, bad link            01/01/70 00:00      
         DS89C4x0 ISP            01/01/70 00:00      
         About the link            01/01/70 00:00      
            Link works here            01/01/70 00:00      
      Link            01/01/70 00:00      
         same place            01/01/70 00:00      
   Link again            01/01/70 00:00      
   Back to the main issue...            01/01/70 00:00      
      No scope,            01/01/70 00:00      
         But this is the FULL circuit diagram            01/01/70 00:00      
            use something else            01/01/70 00:00      
            Oh no it isn't            01/01/70 00:00      
               Look at the bottom            01/01/70 00:00      
                  but..            01/01/70 00:00      
                     Cap on Pin 2 to connected Vcc            01/01/70 00:00      
                        which goes to show.....            01/01/70 00:00      
                           You 're right            01/01/70 00:00      
                              Make a start.            01/01/70 00:00      

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