KXTIK-1004 Datasheet, PDF (45/54 Pages) List of Unclassifed Manufacturers – 2g/4g/8g Tri-axis Digital Accelerometer Specifications

± 2g / 4g / 8g Tri-axis Digital
Accelerometer Specifications
PART NUMBER:
KXTIK-1004
Rev. 2
Dec-2011
Single Tap Detection
The latency timer (TDT_LATENCY_TIMER) sets the time period that a tap event will only be
characterized as a single tap. A second tap has to occur outside of the latency timer. If a second tap
occurs inside the latency time, it will be ignored as it occurred too quickly. The single tap will be
reported at the end of the TDT_WINDOW_TIMER. Figure 7 shows a single tap event meeting the PI,
latency and window requirements.
Calculated Performance Index
160
PI
140
TDT_WINDOW_TIMER
120
100
TDT_LATENCY_TIMER
80
60
40
TDT_L_THRESH
20
0
2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3 3.1
time(sec)
Figure 7. Single Directional Tap^TM Timing
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