AVR-Chat

Thanks for the info.  I'm planning on using an external interrupt to
wake things up.  I just haven't been able to glean that info from
their datasheets.

--- In AVR-Chat@yahoogroups.com, "kernels_nz" <hein@...> wrote:
>
> Hi Richard,
> 
> How do you intend to wake up the MCU from Standby mode ? ie, dropping
> reset low, external interrupt etc. I know that if you use an external
> intterupt set to respond to a "low level" it takes 2 watchdog
> oscillator cycles. a Hardware reset would be pretty much
> instantaneous. I havent looked at the datasheet for the Mega32, but
> have significant experience with Mega8 and 16. 
> 
> If it was critical, I would set a pin low, go to sleep, configure
> things to wake up immediately after going to sleep, then set the pin
> high. You can then use a good scope to have a look at the time taken.
> This will give you a ballpark range, but youll need a pretty good
> digital scope, preferrably with programmable trigger.
> 
> Cheers
> Hein B
> Auckland, New Zealand.
> 
> --- In AVR-Chat@yahoogroups.com, "Richard Cooke" <rcooke@> wrote:
> >
> > Hi Folks,
> > 
> > I've looked through the datasheet and I can't seem to find any data on
> > how long the chip takes to come out of standby.  I need to maximize
> > battery life so I envision the chip to spend a lot of time in a
> > power-saving mode but it needs to come back to life quickly.  Does
> > anybody know where to find that info?  As an aside - the MSP430
> > advertises it will wake-up in 6us.
> > 
> > Thanks,
> > 
> > Richard
> >
>