Tim Ahrens

QG8 internal pullup = 150uA???

Discussion created by Tim Ahrens on Dec 4, 2008
Latest reply on Dec 5, 2008 by Tim Ahrens
Hi Folks,
 
I must be missing something - I'm working on reducing current consumption on a
battery device, and it's drawing about 150 uA more than it should in STOP3 mode.
 
I narrowed it down to when I select an internal pullup with PTAPE.  If no pullup is
selected, the current is basically nothing.  With it, it is 150uA.  It is PTA1, and I'm
using it as a keyboard interrupt.
 
If I put an external pullup on it (for a switch), the circuit works fine, and there
is no extra current.
 
Ideas?
 
Thanks,

Tim

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