Lpc2000

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.