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Richard Erlacher
01/14/13 11:11
Read: 751 times
Denver, Co
USA


 
#189165 - Erik doesn't like it when you don't do what he wants
Responding to: James Brzycki's previous message
I've complained to Erik for a decade or more that he seems determined to get everyone to use what he thinks is "modern." However, since your interest in these MCU's is targeted at the DS89C430 and DS80C320, neither of which is from SiLabs, he'll continue telling you you're wrong until hell freezes over.

The fact is, you can do whatever you want, but can't expect serial EEPROM to serve as program store for a ROM-less MCU. If you study the datasheets, meaning thoroughly read and understand 'em, you'll clearly see why that is.

The DS89C430 has on-chip FLASH as program store. The DS80C320, has none. Without some sort of external memory, mapped into the program space, you'll have no luck getting the thing to do anything.

Though the DS80C320 is an old war-horse, it is still just a capable as it ever was. If that chip is suitable for what you want to do, then all you have to do is provide it with Flash, EEPROM, EPROM, or BBRAM memory that responds to the nPSEN strobe, once it's programmed with the code you want it to execute.

If you read DS89C430 the datasheet carefully, you'll see that there's a very simple programming circuit by means of which you can program the 16kB on-chip program store, for which purpose Maxim provides a loader program that is intended to reside on your PC. I've used this feature many times and find it quite reliable.

For the DS80C320, you'll need some sort of external non-valatile read-only memory, and you'll need some capable facility with which to program that memory. Serial EEPROM won't serve your need in this context.

BTW, since the DS89C430 has only 16 kBytes of on-chip program store, you can't program it using IAP, because that only works on the program space above 32 kB. As a consequence, you can't use SEEPROM to store your program and load it into the on-chip program store.

RE




List of 40 messages in thread
TopicAuthorDate
Regarding Typical memory connection for a ds80c320      James Brzycki      01/13/13 19:39      
   drop it!      Erik Malund      01/13/13 20:10      
   same question - same answers      Andy Neil      01/13/13 23:32      
   It won't work      Andy Neil      01/13/13 23:41      
      Andy Neil's previous message      James Brzycki      01/14/13 06:41      
         little feet stamping the floor      Erik Malund      01/14/13 07:33      
            little feet stamping the floor      James Brzycki      01/14/13 07:45      
               Erik doesn't like it when you don't do what he wants      Richard Erlacher      01/14/13 11:11      
                  KISS      Erik Malund      01/14/13 11:39      
                     Not exactly ...      Richard Erlacher      01/14/13 23:35      
                        I find it odd that you      Erik Malund      01/15/13 09:29      
                           just to add      James Brzycki      01/15/13 11:24      
                              If you really want to use ds80c320      Jim Granville      01/15/13 18:28      
                                 Not necessary ...      Andy Neil      01/15/13 23:31      
                                    What about the other option?      Richard Erlacher      01/16/13 02:00      
                                    Yes, but ..      Jim Granville      01/16/13 12:56      
                              So your development cycle will be...      Andy Neil      01/16/13 01:01      
                           What about that other post?      Richard Erlacher      01/16/13 01:50      
                              reply to all      James Brzycki      01/16/13 14:12      
                                 'something'      Erik Malund      01/16/13 15:16      
                                    "something" reply      James Brzycki      01/16/13 16:35      
                                 Some links to reduce work       Jim Granville      01/16/13 19:11      
                                 I'm not surprised ...       Richard Erlacher      01/17/13 01:06      
                                    down memory lane      Erik Malund      01/17/13 09:38      
                                       Antique chips        Mahmood Elnasser      01/17/13 10:04      
                                          in my opinion      Erik Malund      01/17/13 13:06      
                                             Just where, under the hood, can you look?      Richard Erlacher      01/17/13 21:42      
                                                this applies equally well      Erik Malund      01/17/13 21:52      
                                                   Did he say he wants apples?      Richard Erlacher      01/17/13 21:57      
                                          Highly integrated devices deprive one of valuable experience      Richard Erlacher      01/17/13 21:38      
                                       the only difference ...       Richard Erlacher      01/17/13 12:14      
                                          a monitor can not       Erik Malund      01/17/13 13:09      
                                             I don't think anyone's that foolish ...       Richard Erlacher      01/17/13 21:15      
                                                I do      Erik Malund      01/17/13 21:26      
                                                   He doesn't have to apply external memory      Richard Erlacher      01/17/13 21:55      
                                                      by your posts he does      Erik Malund      01/17/13 22:14      
                                                         You have to consider ALL his posts      Richard Erlacher      01/18/13 11:47      
            The bible links      James Brzycki      01/14/13 07:47      
               you are right      Erik Malund      01/14/13 08:07      
                  Thanks      James Brzycki      01/14/13 08:29      

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