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???
01/16/13 14:23
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#189191 - good idea but
Responding to: ???'s previous message
Seems a good idea, but my board is a multilayer and not easy to change. Although I can bend the POL pin and connect to GND. I'll try this later on this week

I also try 3.3V at Vcc

I'm awaiting further response from Atmel the coming hours.

Thx

List of 24 messages in thread
TopicAuthorDate
Reset issue with new Atmel AT89LP51ED2            01/01/70 00:00      
   Do never use a µC from which only a preliminary...            01/01/70 00:00      
      configuration settings            01/01/70 00:00      
         what about negative reset?            01/01/70 00:00      
            good idea but            01/01/70 00:00      
   Some things to check...            01/01/70 00:00      
      also try no LM810 at all            01/01/70 00:00      
         reset is inverted            01/01/70 00:00      
      no strange signals            01/01/70 00:00      
         Extra modes ?            01/01/70 00:00      
            pull-up on PSEN solves the problem            01/01/70 00:00      
               small capacitor ?            01/01/70 00:00      
                  small capacitor            01/01/70 00:00      
   side-stepping the problem?            01/01/70 00:00      
      SST could be an option            01/01/70 00:00      
   final status AT89LP51ED2 reset            01/01/70 00:00      
      Clarifies             01/01/70 00:00      
         loads on PSEN            01/01/70 00:00      
            An isolated PSEN works fine ?            01/01/70 00:00      
               GAL causes problem            01/01/70 00:00      
                  ATF16V8CZ has Pin-keeper            01/01/70 00:00      
                     'Z' indeed            01/01/70 00:00      
                        ATF16V8BQL has Icc of ~1.5mA            01/01/70 00:00      
                           'BQL' version could be an option            01/01/70 00:00      

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