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MMA8652 - Questions about Interrupts and ODR

Question asked by Nicole L on Mar 21, 2017
Latest reply on Mar 22, 2017 by David Diaz Marin



I had a question about how ODR affects interrupt speed on the MMA8652FC accelerometer. I noticed that there is a considerably large amount of delay when there is a lower ODR. My biggest concern is using the tap interrupt and getting an interrupt pulse from it while keeping a low power consumption.


At the moment, I am finding that 12.5Hz for ODR is extremely slow to respond. It feels like there is at least 3 seconds before there is a pulse generated from the MMA. Does this sound about right?


Also, what are ways to reduce power consumption of the MMA8652FC (not including reducing the ODR)? Is there a sleep mode other than the Auto-sleep option?


Thanks in advance.