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???
06/10/13 04:27
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#189897 - idle current
Responding to: ???'s previous message
Mikkel C. Simonsen said:
The current should be about 2.7mA in active mode and about 0.6mA in idle mode. The actual current is 2.7mA all the time - not what I expected.

Are you sure the part is in idle when you expect it to be so? Can't there be some unexpected interrupt waking it up immediately or soon after it enters idle? Can you retry the current measurement with some trivial code which does not enable any interrupt and just enters the idle state?

JW


List of 44 messages in thread
TopicAuthorDate
Low-power MCU needed            01/01/70 00:00      
   OK, but wrong            01/01/70 00:00      
      Wrong how?            01/01/70 00:00      
         Silabs options            01/01/70 00:00      
            C8051F99x            01/01/70 00:00      
               Silabs            01/01/70 00:00      
                  look it up            01/01/70 00:00      
                     Looked up            01/01/70 00:00      
                        f53, no            01/01/70 00:00      
                        C8051F537A is OK            01/01/70 00:00      
         the current in active mode is not the issue            01/01/70 00:00      
            Inactive current            01/01/70 00:00      
         re: wrong            01/01/70 00:00      
            Consumers            01/01/70 00:00      
   Zilog Z51F0410             01/01/70 00:00      
      Zilog            01/01/70 00:00      
   Check you are entering idle ?            01/01/70 00:00      
   idle current            01/01/70 00:00      
      Idle test            01/01/70 00:00      
         re:            01/01/70 00:00      
            It floats! It floats!            01/01/70 00:00      
               re:floats            01/01/70 00:00      
               re:floats            01/01/70 00:00      
                  Timers            01/01/70 00:00      
         More idle tests            01/01/70 00:00      
            Better regulator?            01/01/70 00:00      
               LR8K4 450V regulator             01/01/70 00:00      
         also try CLKREG            01/01/70 00:00      
            Clk Dividers are a good idea            01/01/70 00:00      
               No dividers            01/01/70 00:00      
                  LP52 is cheaper too...            01/01/70 00:00      
                     LP52            01/01/70 00:00      
                        No GND pin?            01/01/70 00:00      
         re:idle            01/01/70 00:00      
         Totally idle            01/01/70 00:00      
            Checks            01/01/70 00:00      
               More checks            01/01/70 00:00      
                  Power Down ?            01/01/70 00:00      
                  test setup            01/01/70 00:00      
   STC            01/01/70 00:00      
      C8051F86x/85x ?            01/01/70 00:00      
      Maybe not such a good choice, after all?            01/01/70 00:00      
         Support?            01/01/70 00:00      
            '51 support            01/01/70 00:00      

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