
Data sheet
BMA220
Page 21
BST-BMA220-DS003-08 | Revision 1.15 | August 2011 Bosch Sensortec
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Note: Specifications within this document are subject to change without notice.
Figure 7: Tap sensing interrupt detection
When a tap-sensing interrupt is triggered, the following details can be read from the
corresponding registers: the axis that has triggered the interrupt (tt_first_x, tt_first_y, tt_first_z)
and the motion direction of the triggering acceleration signal (tt_sign).
ta
shock=50ms
tt_th
single tap detection
(
slo
e
ta
uiet = 30ms tt
dur = 12.5 ÷ 500 ms
2nd TAP
ta
shock=50ms ta
uiet = 30ms
time
double tap detection
timee
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