LSM6DSM Datasheet, PDF (87/113 Pages) STMicroelectronics – always-on 3D accelerometer and 3D gyroscope

LSM6DSM
Register description
10.76
WAKE_UP_THS (5Bh)
Single and double-tap function threshold register (r/w).
Table 186. WAKE_UP_THS register
SINGLE_
DOUBLE_TAP
0
WK_THS5 WK_THS4 WK_THS3 WK_THS2 WK_THS1 WK_THS0
Table 187. WAKE_UP_THS register description
Single/double-tap event enable. Default: 0
SINGLE_DOUBLE_TAP (0: only single-tap event enabled;
1: both single and double-tap events enabled)
WK_THS[5:0]
Threshold for wakeup. Default value: 000000
1 LSb corresponds to FS_XL/2⁶
10.77
WAKE_UP_DUR (5Ch)
Free-fall, wakeup, timestamp and sleep mode functions duration setting register (r/w).
FF_DUR5
WAKE_
DUR1
Table 188. WAKE_UP_DUR register
WAKE_ TIMER_ SLEEP_ SLEEP_
DUR0
HR
DUR3
DUR2
SLEEP_
DUR1
SLEEP_
DUR0
FF_DUR5
WAKE_DUR[1:0]
TIMER_HR
SLEEP_DUR[3:0]
Table 189. WAKE_UP_DUR register description
Free fall duration event. Default: 0
For the complete configuration of the free-fall duration, refer to FF_DUR[4:0] in
FREE_FALL (5Dh) configuration.
1 LSB = 1 ODR_time
Wake up duration event. Default: 00
1LSB = 1 ODR_time
Timestamp register resolution setting⁽¹⁾. Default value: 0
(0: 1LSB = 6.4 ms; 1: 1LSB = 25 μs)
Duration to go in sleep mode. Default value: 0000 (this corresponds to 16 ODR)
1 LSB = 512 ODR
1. Configuration of this bit affects TIMESTAMP0_REG (40h), TIMESTAMP1_REG (41h),
TIMESTAMP2_REG (42h), STEP_TIMESTAMP_L (49h), STEP_TIMESTAMP_H (4Ah), and
STEP_COUNT_DELTA (15h) registers.
10.78
FREE_FALL (5Dh)
Free-fall function duration setting register (r/w).
Table 190. FREE_FALL register
FF_DUR4 FF_DUR3 FF_DUR2 FF_DUR1 FF_DUR0 FF_THS2 FF_THS1 FF_THS0
FF_DUR[4:0]
FF_THS[2:0]
Table 191. FREE_FALL register description
Free-fall duration event. Default: 0
For the complete configuration of the free fall duration, refer to FF_DUR5 in
WAKE_UP_DUR (5Ch) configuration
Free fall threshold setting. Default: 000
For details refer to Table 192.
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