Help with low power mode MMA8452Q

Hi guys,

my setup is ATMega328P at 3.3v and 8mhz hooked up to a MMA8452Q breakout from sparkfun via i2c.
I'm trying to see Current consumption between 6 μA to 165 μA as datasheet says, but when the device is not in sleeping mode, it consumption is about 400 uA and when it enter to sleeping mode is about 360 uA, depending of configuration on registers 1 and 2, but never is down of 300 uA.
Have any one an idea what’s going on? Thank you!

Any sugestion?