KL25 consumption on Low Power modes with Freedom board

[antoineodonne]

Hello,

I am trying to reach the datasheet consumption values with the Freedom eval board, but I don't manage it.

On the different low leakage stop mode I measure 2.8uA added in comparison to datasheets values, except on VLLS0 where I have 300nA added.

The fact that I get a closer result on VLLS0 make me think that there is no external leakage on the board, but the 2.8uA configuration for the other modes is still important. I guess I am wrong in the configuration and forget something to reach optimal value.

Do you have an idea of the potential source of that extra consumption?

In my code, I just disable watchdog and clock monitoring and go to the desired Stop mode.

Thank you for the help.

Antoine

[apanecatl · Accepted solution]

Hi Antoine, besides disabling the watchdog, there are some other things you need to take into consideration to achieve the power consumption figures depicted in the datasheet, please take a look at our Low power management application note for kinetis architectures:

http://cache.freescale.com/files/32bit/doc/app_note/AN4503.pdf