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???
01/06/10 07:59
Modified:
  01/06/10 08:17

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#172189 - Look here
Responding to: ???'s previous message
Trangga Findanugroho said:
External RAM of 89S51 is complicated!

Like Richard says, that's the way it is with the 8051 Architecture - if you don't find it acceptable, then you will need to switch to a different Architecture!
(but you will undoubtedly find that other architectures have their own foibles!)

Is there any microcontroller which is has huge internal RAM in it?

Depends what you mean by "internal".
The DATA and IDATA address spaces[1] sizes are fixed by the 8051 Architecture, but there are plenty of chips with large amounts of on-chip XDATA - See: http://www.keil.com/dd/search_parm.asp

[1]: I'm using the terms DATA, IDATA, and XDATA as used by Keil:
http://www.keil.com/support/m...atamem.htm
http://www.keil.com/support/m...atamem.htm

List of 26 messages in thread
TopicAuthorDate
Need more Internal RAM            01/01/70 00:00      
   Yes, but they handle it the same as external RAM            01/01/70 00:00      
   Look here            01/01/70 00:00      
      Ok            01/01/70 00:00      
   complicated and complicated            01/01/70 00:00      
   why?            01/01/70 00:00      
   It's Not Really So Complicated--And....            01/01/70 00:00      
      someone recently posted a link to a 805x with 64kB of RAM            01/01/70 00:00      
      Proper methodology can't really bound the memory requirement            01/01/70 00:00      
      That's My Point            01/01/70 00:00      
   RAM expansion need not be complicated!            01/01/70 00:00      
      MOVX problem            01/01/70 00:00      
         No            01/01/70 00:00      
            unless you have external glue logic            01/01/70 00:00      
               Yes            01/01/70 00:00      
         "bible" time!            01/01/70 00:00      
      There are much larger SPI memories            01/01/70 00:00      
   Look at Wiz chip            01/01/70 00:00      
      Link?            01/01/70 00:00      
         links            01/01/70 00:00      
            Overkill?            01/01/70 00:00      
               and expensive?            01/01/70 00:00      
                  When at electronics store            01/01/70 00:00      
                     Which one?            01/01/70 00:00      
                     How does that compare with ordering from outside?            01/01/70 00:00      
                        I've always had to do that!            01/01/70 00:00      

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