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05/17/06 17:44
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 		 #116398 - 8052 overclocking
hi guys

recently I switched from AT89S8282 to AT89S8253
the '53 has a feature to swich the internal clock
this means it takes 6 clockpulses for one machinecycle instead of 12, so your uC runs twice as fast.
The datasheets states the max freq is 24 MHz, so in case of the clock doubler 12 MHz max.

Does anyone have an idea what happens it I double the clock on a 20+ MHz x-tal, so the freq should become 40+ MHz

will the uC get instable or will it work? I would be really happy with such a fast uC

Let my know how you think about it

Regards
Jeroen

List of 35 messages in thread
TopicAuthorDate
8052 overclocking            01/01/70 00:00      
   The absolutely complete answer is            01/01/70 00:00      
      its a definate maybe            01/01/70 00:00      
      Ideas...            01/01/70 00:00      
   Guarantees            01/01/70 00:00      
      i think Jeroen is an amateur            01/01/70 00:00      
   Even PC Overclockers know....            01/01/70 00:00      
      but PC overclockers also know            01/01/70 00:00      
         buying a 40MHz XTAL?            01/01/70 00:00      
         So get a faster one.            01/01/70 00:00      
         no need for overclocking !            01/01/70 00:00      
            more global            01/01/70 00:00      
            how to program            01/01/70 00:00      
               on programming tools, clocks and other            01/01/70 00:00      
               bootloader devices            01/01/70 00:00      
                  don't forget the Dallas devices            01/01/70 00:00      
         that's not quite true ... sadly enough            01/01/70 00:00      
   Entertaiment            01/01/70 00:00      
      Can you post that schematic?            01/01/70 00:00      
      How much performance did you squeeze out            01/01/70 00:00      
   Over-52-ing            01/01/70 00:00      
      yes well critical paths            01/01/70 00:00      
      Flash is a little slow...            01/01/70 00:00      
         well, it "is" possible            01/01/70 00:00      
            wide/interleaved FLASH            01/01/70 00:00      
               caching            01/01/70 00:00      
                  no cache, but prefetch            01/01/70 00:00      
                     the difference            01/01/70 00:00      
                        this is how your childhood is dying            01/01/70 00:00      
                           the 2 meanings            01/01/70 00:00      
   many devices do not need a "programming            01/01/70 00:00      
   Re: 8051 o/clock...            01/01/70 00:00      
      gobbelygook            01/01/70 00:00      
         working like crazy :-)))            01/01/70 00:00      
            I under clocked once...            01/01/70 00:00      

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