KXCJK-1013 Datasheet, PDF (29/31 Pages) List of Unclassifed Manufacturers – Accelerometer Specifications

± 2g / 4g / 8g Tri-axis Digital
Accelerometer Specifications
PART NUMBER:
KXCJK-1013
Rev. 2
Dec-2012
KXCJK Embedded Wake Up Function
The KXCJK contains an interrupt engine that can be configured by the user to report when qualified changes
in acceleration occur. The user has the option to enable or disable specific axes and specific directions, as
well as to specify the delay time. An example use case for the engine would be to detect motion on any axis
to signal an event and wake up the accelerometer or other devices. This can be achieved by configuring the
engine to detect when the acceleration on any axis is greater than the user-defined threshold for a user-
defined amount of time. Equations 1 and 2 show how to calculate the engine threshold
(WAKEUP_THRESHOLD) and delay time (WAKEUP_TIMER) register values for the desired result.
WAKEUP_THRESHOLD (counts) = Desired Threshold (g) x 16 (counts/g)
Equation 1. Wake Up Threshold
WAKEUP_TIMER (counts) = Desired Delay Time (sec) x OWUF (Hz)
Equation 2. Wake Up Delay Time
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