STM CircleOS forum / Time to wake up from PD to full spped @ 72 MHz

NicFromParis · 2010-02-25 13:38:22

Hello,

I would like to save the power consumption of a portable device including the STM32F103xxx.
The duty cycle is very low, most of the time, the STM32F103xx is power down.
For a very short time (a few dozens of ms), it will run at full speed (72 MHz).
So my question is :
how long for turning from power down to full speed ? (in time and number of cylces)
is there a register/ some thing that can tell that the STM32 is ready ?

Thanks,

Regards,

Nicolas Deparis

NicFromParis · 2010-02-25 13:52:15

It seems that I ve found the answer :

6 CPU cycles wake up time from Low Power Mode

in STM32_Technical Training.ppt page 4

# 1 2010-02-25 13:38:22 Time to wake up from PD to full spped @ 72 MHz

Time to wake up from PD to full spped @ 72 MHz

# 2 2010-02-25 13:52:15 Time to wake up from PD to full spped @ 72 MHz

Re: Time to wake up from PD to full spped @ 72 MHz

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