Freescale Semiconductor FRDM-FXS-MULTI 데이터 시트
FXOS8700CQ
Sensors
70
Freescale Semiconductor, Inc.
10.12.4 PULSE_THSY (0x24) register
10.12.5 PULSE_THSZ (0x25) register
10.12.6 PULSE_TMLT (0x26) register
Minimum time step for the pulse-time limit is defined in
Tables
. Maximum time for a given ODR is “Minimum time
step x 255”.
Table 127. PULSE_THSY register
—
pls_thsy[6:0]
0
0b000_0000
Table 128. PULSE_THSY bit description
Field
Description
pls_thsy[6:0]
Pulse threshold for Y-axis.
Table 129. PULSE_THSZ register
—
pls_thsz[6:0]
0
0b000_0000
Table 130. PULSE_THSZ bit description
Field
Description
pls_thsz[6:0]
Pulse threshold for Z-axis.
Table 131. PULSE_TMLT register
pls_tmlt[7:0]
0b0000_0000
Table 132. PULSE_TMLT bit description
Field
Description
pls_tmlt[7:0]
pls_tmlt[7:0] defines the maximum time interval that can elapse between the start of the acceleration on the selected
channel exceeding the specified threshold and the end when the channel acceleration goes back below the specified
threshold.
channel exceeding the specified threshold and the end when the channel acceleration goes back below the specified
threshold.
Table 133. Time step for PULSE_TMLT with HP_FILTER_CUTOFF[pls_hpf_en] = 1
ODR (Hz)
Max time range (s)
Time step (ms)
Normal
LPLN
High
resolution
Low power
Normal
LPLN
High
resolution
Low power
800
0.319
0.319
0.319
0.319
1.25
1.25
1.25
1.25
400
0.638
0.638
0.638
0.638
2.5
2.5
2.5
2.5
200
1.28
1.28
0.638
1.28
5
5
2.5
5
100
2.55
2.55
0.638
2.55
10
10
2.5
10
50
5.1
5.1
0.638
5.1
20
20
2.5
20
12.5
5.1
20.4
0.638
20.4
20
80
2.5
80
6.25
5.1
20.4
0.638
40.8
20
80
2.5
160
1.56
5.1
20.4
0.638
40.8
20
80
2.5
160