Lpc2000

Hi Yug,

the device works perfectly well with PLL, just slower. The PLL alone
is probably consuming around 1 mA and with the PLL disabled, the whole
device is slower, so it uses less power in idle mode.
You should also set the VPB-divider to divide the peripheral clock by
4, this will save another couple mAs.

Hope this gets you closer to your target power consumption

Cheers, Bob

--- In lpc2000@yahoogroups.com, "yugandhar_vasi" <yvasi@k...> wrote:
> I observed that when PLL is on, I cannot bring down the power 
> consumption equal, to that of when Boot loader is running, I wonder 
> what boot loader is doing (if at all other than sleeping). 
> 
> But otherwise sleep mode definitely reduces a lot power consumption, 
> but still not up to mark. 
> 
> Is it possible for the chip to work properly even if PLL is not used??
> 
> Thanks
> Yug
> 
> --- In lpc2000@yahoogroups.com, "dave_albert" <david_albert@h...> 
> wrote:
> > Does anyone know what the power consumption of the LPC210x or 211x 
> is 
> > with the CPU in IDLE mode and only the RTC running?  I can only 
> find 
> > figures for active and power down modes, but not idle mode.
> > 
> > Also, how much power could be saved by turning off the PLL and 
> > running from the crystal oscillator directly.
> > 
> > I need to minimize power consumption and wake up periodically to 
> log 
> > data.  I'd like to do this without adding additional components as 
> > this is a cost sensitive application.