At 02:22 PM 10/03/97 -0500, you wrote:
>Well, I HAVE a load-resistor between +5V and GND (10K Ohm)  But it's kind
>of slow to power all the way down still!  I'm afraid to go to a lower value
>because everything runs through a +5VDC regulator (MAX is probably .5A).
>If I do the Maxim thing, do you think that should be the end of it?  I
>don't like the idea of my power not dropping to 0 even if my processor
>resets!

The Maxim devices and those of other manufacturers will clamp the reset line
either high or low depending on the variety of the device. Most of them (I
think)
are clamping reset low, when power is up again to acceptable operating levels,
then the clamp is released. SO even if a couple of volts are on the device it
should not run - if the reset device is doing the right thing, then you can
forget
it, unless it is draining a battery and you want to minimise loss.

And yes - I think it should be the end of it but, and a big but, make sure you
try to minimise the effect of any other power source you do not want. If I
remember correctly from a much earlier post from you - you mentioned that there
was nothing you could do to stop power leaking into the PIC circuit from a
sensor
or transducer. I recommened you have another look at that.

Incidentally if you have a current meter, measure the current between a 1K
resistor to Vcc from ground, when the power is off. Your 10K is a bit big,
1K is only 5mA and is OK. If its going to be battery powered then remove the
pull down resistor(s) and go with the Maxim type devices.

Can you send me a .GIF or Protel schematic which shows where this extra power
is coming from AND getting coupled back into the PIC ? Or how about an ASCII
representative schematic ?

Rgds

Mike
Perth, Western Australia

There is no a'priori reason that the ultimate truth will be interesting
or even useful, those moments of frustration during philosophical debate
would be replaced by the sheer terror which accompanies true knowledge.