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???
07/17/07 15:06
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#141975 - OK, I found the first error in the new datasheet..
Responding to: ???'s previous message
Who will find the next?

The explanation of EXTRAM throughout pages 13 to 14 including table 7 clearly indicate, that the internal XRAM is accessed when EXTRAM=1.

Fig.4 clearly indicates, that the internal XRAM is accessed, when EXTRAM=0.

Tom, try both...

JW


List of 16 messages in thread
TopicAuthorDate
P89CV51Rx2 XRAM bug?            01/01/70 00:00      
   @Ri or @dptr?            01/01/70 00:00      
      @dptr            01/01/70 00:00      
         P89v51 <--> P89C51 differences            01/01/70 00:00      
            Oh sorry I mis-read            01/01/70 00:00      
               What is the full part No of the C51RB2?            01/01/70 00:00      
                  P89C51RB2BA & internal XRAM            01/01/70 00:00      
                     what is "the CV51 solution" ?            01/01/70 00:00      
                        isp entry on /PSEN - as with the old \'C51Rx2            01/01/70 00:00      
                           maybe, maybe not            01/01/70 00:00      
                              P89V P89C            01/01/70 00:00      
                        CV51 solution            01/01/70 00:00      
                           the old errors...            01/01/70 00:00      
   OK, I found the first error in the new datasheet..            01/01/70 00:00      
      whoever wrote that datasheet...            01/01/70 00:00      
      Jan is close!            01/01/70 00:00      

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