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???
01/24/06 17:20
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 		 #108203 - Writing external flash only programming
Responding to: ???'s previous message

My idea is to have a PC software to be used only during programming cycles. Thus, our design which consists in a 51 micro and external flash could be programmed in-system.

This PC would communicate with a "user Bootloader" in the micro via RS232 and this bootloader would program:

- the first 32K o the program in the on-chip memory
- the rest in the external flash

After programming, registers should be set in order to execute the default bootoloader (which also implements the In-System programming via UART and the on-chip flash API-s)

Do you know if somebody has already implemented something like this ?

List of 26 messages in thread
TopicAuthorDate
External Flash In-System Programming            01/01/70 00:00      
   Additional hardware also needed            01/01/70 00:00      
      The micro can write the external FLASH            01/01/70 00:00      
         do a search on IAP            01/01/70 00:00      
         Are you sure?            01/01/70 00:00      
            Writing external flash only programming            01/01/70 00:00      
               Somehow it would be nice, albeit seeming            01/01/70 00:00      
                  I know the OP did not answer explicitly,            01/01/70 00:00      
                     I do not think so            01/01/70 00:00      
                        cunning scheme            01/01/70 00:00      
                           nope            01/01/70 00:00      
                              yep, that's your way, but the OP wants..            01/01/70 00:00      
                                 using !CS            01/01/70 00:00      
                                    In the olden days            01/01/70 00:00      
                                    what's the problem?            01/01/70 00:00      
                                       Unless            01/01/70 00:00      
                     just a nagging doubt...            01/01/70 00:00      
               Yes, it's been done in another context            01/01/70 00:00      
               clarification            01/01/70 00:00      
   8052SBC Example            01/01/70 00:00      
   The HW is prepared            01/01/70 00:00      
      yes and no            01/01/70 00:00      
         I don't know for this particular derivat            01/01/70 00:00      
      why on earth?            01/01/70 00:00      
         In-System Programming            01/01/70 00:00      
            simple, then            01/01/70 00:00      

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