AVR-Chat

Hi John,

According to the Mega48 manual (page 40) the following conditions will
wake the chip from power-down mode:

"Only an External Reset, a Watchdog System Reset, a Watchdog
Interrupt, a Brown-out Reset, a 2-wire Serial Interface address match,
an external level interrupt on INT0 or INT1, or a pin change
interrupt can wake up the MCU."

So, I hope I'm reading this correctly.  My device needs to operate on
a CR3025 coin cell so I need to spend most of the time in power-down mode.

Thanks,

Richard Cooke

--- In AVR-Chat@yahoogroups.com, John Samperi <samperi@...> wrote:
>
> At 06:28 AM 23/07/2007, you wrote:
> >Here is the external pin change ISR:
> 
> Are you sure that you can wake up from sleep mode with PCINT?
> I haven't used it but perhaps that's not possible. SORRY :-(
> 
> 
> Regards
> 
> John Samperi
> 
> ********************************************************
> Ampertronics Pty. Ltd.
> 11 Brokenwood Place Baulkham Hills, NSW 2153 AUSTRALIA
> Tel. (02) 9674-6495       Fax (02) 9674-8745
> Email: john@...
> Website  http://www.ampertronics.com.au
> *Electronic Design * Custom Products * Contract Assembly
> ********************************************************
> 
> 
> -- 
> No virus found in this outgoing message.
> Checked by AVG Free Edition. 
> Version: 7.5.476 / Virus Database: 269.10.12/910 - Release Date:
21/07/2007 3:52 PM
>