I'd like to detect the dynamic component of acceleration, i.e. the change in acceleration, and generate an interrupt when such change is detected. I see that MMA8451/2/3 calls this "Transient Detection".
However, I can't seem to find any other manufacturer supporting "transient detection". I've tried Analog, Kionix, STM, etc. Is it something exclusive to Freescale accelerometers or is it coined up by their marketing department?
I'm not certain of the mechanics, but "Transient Detection" seems to involve a HPF. Does that mean any accelerometer that has a HPF onboard will likely be equivalent to "Transient Detection"?
I believe the MMA8451 is a digital device since it supports I2C.