KX022-1020 Datasheet, PDF (69/75 Pages) List of Unclassifed Manufacturers – Accelerometer Specifications

± 2g / 4g / 8g Tri-axis Digital
Accelerometer Specifications
PART NUMBER:
KX022-1020
Rev. 11.0
10-Sep-15
In trigger mode, data is accumulated in the buffer sequentially until the Sample Threshold is
reached. Once the Sample Threshold is reached, the oldest samples are discarded when new
samples are collected. Note in Figure 18 how Data0 was thrown out to make room for Data8.
Trigger write pointer →
Index
0
1
2
3
4
5
6
7
8
9
Sample
Data1
Data2
Data3
Data4
Data5
Data6
Data7
Data8
← Trigger read pointer
← Sample Threshold
Figure 18: Additional Data Prior to Trigger Event
After a trigger event occurs, the buffer no longer discards the oldest samples, and instead
begins accumulating samples sequentially until full. The buffer then stops collecting samples,
as seen in Figure 19. This results in the buffer holding SMP_TH[6:0] samples prior to the trigger
event, and SMPX samples after the trigger event.
Index
0
1
2
3
4
5
6
7
8
9
Sample
Data1
Data2
Data3
Data4
Data5
Data6
Data7
Data8
Data9
Data10
← Trigger read pointer
← Sample Threshold
Figure 19: Additional Data After Trigger Event
36 Thornwood Dr. – Ithaca, NY 14850
tel: [phone] – fax:[phone]
www.kionix.com - [e-mail]
© 2015 Kionix – All Rights Reserved
Page 69 of 75