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Erik Malund
06/22/09 13:18
Read: 164 times
Mt Airy, Nc
USA


 
#166358 - external vs internal
Responding to: Kai Klaas's previous message
I don't like those on-chip watchdogs and Vcc monitors
I have found that chips with plenty/advanced analog have excellent internal puppies, for some chips where the watchdog is "implemented on a digital die" they do suffer.

HOWEVER, the main problem with an external watchdog is that every time you stop on a breakpoint the chip resets, making on-chip debugging impossible.

Erik

List of 14 messages in thread
TopicAuthorDate
AT89C51ED2 changing speed on its own      Aleksandar Stancic      06/21/09 03:21      
   apply proper reset      Jan Waclawek      06/21/09 05:37      
      apply proper reset      Aleksandar Stancic      06/21/09 12:21      
         then that's R0 not R1      Jan Waclawek      06/21/09 14:57      
         MAX1232 + 4k7 pull-up      Kai Klaas      06/22/09 07:26      
            I beliebe this chip has a built-in watchdog and thus ...      Erik Malund      06/22/09 09:43      
               I don't like those on-chip watchdogs and Vcc monitors      Kai Klaas      06/22/09 10:35      
                  Should be always on      Per Westermark      06/22/09 10:47      
                  external vs internal      Erik Malund      06/22/09 13:18      
                     ..      Aleksandar Stancic      06/22/09 13:45      
                        Ground plane?      Kai Klaas      06/22/09 14:01      
                           no ground plane      Aleksandar Stancic      06/22/09 14:10      
                              choose a "magic" frequency crystal ...      Jan Waclawek      06/22/09 15:00      
                                 20MHz and 57600      Aleksandar Stancic      06/22/09 17:33      

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