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???
01/04/08 07:35
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#149024 - Flash Mapping in P89v51
Responding to: ???'s previous message
There are 2 flash blocks (banks) of memory in the P89v51.

Your code shouldn't be executing in the flash block to be erased and reprogrammed, hence the JUMP instruction outside block address range.

There is a TN6xxxx technical note on the NXP P89v51 web site that explains the banks/blocks.

Joe



List of 8 messages in thread
TopicAuthorDate
P89V51RC2_V03_UPD_ISP.HEX Question            01/01/70 00:00      
   yes, this is an _upgrader_            01/01/70 00:00      
      Flash Mapping in P89v51            01/01/70 00:00      
   P89V firmware update: to be continue...            01/01/70 00:00      
      that's no shame            01/01/70 00:00      
         P89V51 firmware upgrade            01/01/70 00:00      
            it goes like this:            01/01/70 00:00      
               Thanks            01/01/70 00:00      

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