Hi,

I am in a process of selecting a Cortex-M3 micro for a new project.
One of the criteria is lowest possible power consumption in run mode.
So far I was able to determine (based on manufacturers specifications) the following values for uC families:
EFM32 (Energy Micro) - 0.18mA/MHz
Stellaris (TI) - 0.56mA/MHz
STM32 (STMicroelectronics) - 0.625mA/MHz
SAM3S (Atmel) - future device - 1.15mA/MHz (???)
LPC1768 (NXP) - ???
I am not able to find the value of mA/MHz for LPC1768.
Can anyone point me to it or similar indicating power consumption for run mode for LPC1768.

Regards

Jan Start a New Thread

Section 10 of the datasheet has mA as a function of CCLK:

http://ics.nxp.com/products/lpc1000/datasheet/lpc1764.lpc1765.lpc1766.lpc1767.lpc1768.lpc1769.pdf

You will have to add whatever each of the peripherals require. I didn't see those numbers but I didn't look very hard.

The mA/MHz numbers are while executing from flash:

while(1)
;

Richard Start a New Thread

I am trying to do something similar with an LPC2148. I have it using about 1.8 ma (incl voltage regulator) in sleep mode and around 20ma active at 12mhz. At 60 mhz it uses around 60ma. I this is not bad for my application. I may be able to do a bit better, but as yet I have not been able to get the uart working at the lower clock frequency to help debug the code. Start a New Thread