Matt Pobursky wrote:

>On Sun, 8 Feb 2004 15:22:04 -0800, Bruce Partridge wrote:
>
>
>>>[mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Olin Lathrop
>>>Bruce Partridge wrote:
>>>
>>>
>>>>More information:
>>>>
>>>>I'm using a 16F819 and drawing 125 uA during sleep.  The regulator is
>>>>50uA, and the only other component is the op amp which should be <5uA
>>>>when shutdown.  ADC, BOR, LVP, PWM are all shutdown.  All other pins
>>>>are outputs and are set to 0.
>>>>
>>>>
>>>What about the voltage divider for the battery voltage you
>>>mentioned before?
>>>
>>>
>>The voltage divider is a 59K and a 47K resistor running from the battery.
>>
>>
>
>Ouch, that's ~56uA @ 6V) right there. Olin was right, you really need
>to switch off your battery resitor divider when you are not measuring
>it or the PIC is powered down.
>

I did that with a small PIC timer a while ago. I powered a 10K
(time) pot from a PIC pin and only turned it one for the A2D.
David...

--
___________________________________________
David Duffy        Audio Visual Devices P/L
U8, 9-11 Trade St, Cleveland 4163 Australia
Ph: +61 7 38210362   Fax: +61 7 38210281
New Web: www.audiovisualdevices.com.au
___________________________________________

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.