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???
09/15/12 22:58
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 		 #188342 - Why would you want to
Responding to: ???'s previous message
invest all your time and resources and build your own developement board when you said yourself that you are new to interfacing memories to a microprocessor? Michael and Erik have already suggested looking into a developement board using Silabs chips. The C8051F120 has internal 128K of Flash program memory and also has 8K of internal SRAM, all of which runs at full cpu speed. For I/O it comes with eight 8-bit ports. The included debug adapter allows you to program and debug the device without any additional hardware. With a Silabs developement board you will spend most of your time developing your application, not trying to figure out why your home-built board is not working as you think it should.

By the way, the EA pin on the microprocessor is used to determine if internal or external program store is being used. But with all the devices available with 64K or more of Flash program memory, why use an external program memory? Also, a good EEPROM programmer is going to cost you money better spent on a good, professional developement board.

Hal

List of 28 messages in thread
TopicAuthorDate
Nokia 3310 display [PCD8544] dot problem            01/01/70 00:00      
   NOTE-            01/01/70 00:00      
      Graphics Displays            01/01/70 00:00      
         memory management            01/01/70 00:00      
            it would not            01/01/70 00:00      
               more help            01/01/70 00:00      
                  Search engines?            01/01/70 00:00      
                     confused            01/01/70 00:00      
                        No exact answer            01/01/70 00:00      
                        Type of Thinking            01/01/70 00:00      
                           I second that            01/01/70 00:00      
                              doubt - interfacing memory with 8051            01/01/70 00:00      
                                 Why would you want to            01/01/70 00:00      
                                    Don't overlook the "extras"            01/01/70 00:00      
                                    why to use my own design            01/01/70 00:00      
                                       which is corect, but            01/01/70 00:00      
                                       Wrong approach for India            01/01/70 00:00      
                                          my approach + new doubt [start execution]            01/01/70 00:00      
                                             Perhaps you've overlooked some options            01/01/70 00:00      
                                                my circuiting & a Really surprising, Good Board            01/01/70 00:00      
                                                   Not all 805x variants are the same             01/01/70 00:00      
                                                   Besides 8051 there are other....            01/01/70 00:00      
                                                   BEWARE            01/01/70 00:00      
                                                      Shortest path            01/01/70 00:00      
                                                   use direct wiring when using point-to-point            01/01/70 00:00      
                                 Are you determined to fail?            01/01/70 00:00      
                           SiLabs isn't the only possible solution            01/01/70 00:00      
                        Have you considered the datasheet(s) and 8052.com's search?            01/01/70 00:00      

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