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Re: [avr-chat] What happens to Timer 1 PWM in sleep?

From: Rick Mann
Subject: Re: [avr-chat] What happens to Timer 1 PWM in sleep?
Date: Tue, 8 Feb 2011 13:24:32 -0800

On Feb 8, 2011, at 05:38:32, Joerg Wunsch wrote:

> ``... In Standby mode, the Crystal/Resonator Oscillator is running
> while the rest of the device is sleeping. This allows very fast
> start-up combined with low power consumption. In Extended Standby
> mode, both the main Oscillator and the Asynchronous Timer continue to
> run.''

Thanks. I think I finally understand.

Power-down is the most power-conservative state, and only pin change, TWI 
address match, and the WDT can wake it up.
Power-save is the next lowest power mode, and allows a real-time clock to keep 
Standby is next, but doesn't allow an RTC.
Extended standby is next

The last two sleep modes can be used during EEPROM writes, ADC operations, and 
timer operation.

The table doesn't really order it in terms of power consumption.


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