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MIS2DH 数据表(PDF) 34 Page - STMicroelectronics

部件名 MIS2DH
功能描述  ultra-low-power high-performance 3-axis accelerometer
PDF  49 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

MIS2DH 数据表(HTML) 34 Page - STMicroelectronics

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Register description
MIS2DH
34/49
DocID027506 Rev 2
7.7
CTRL_REG2 (21h)
The bandwidth of the high-pass filter depends on the selected ODR and on the settings of
the HPCFx bits of CTRL_REG2. The high-pass filter cutoff frequencies (ft) are shown in
Table 32.
Table 29. CTRL_REG2 register
HPM1
HPM0
HPCF2
HPCF1
FDS
HPCLICK
HPIS2
HPIS1
Table 30. CTRL_REG2 description
HPM[1:0]
High-pass filter mode selection. Default value: 00
Refer to Table 31 for filter mode configuration
HPCF[2:1]
High-pass filter cutoff frequency selection. Refer to Table 32.
FDS
Filtered data selection. Default value: 0
(0: internal filter bypassed; 1: data from internal filter sent to output register and FIFO)
HPCLICK
High-pass filter enable for CLICK function.
(0: filter bypassed; 1: filter enabled)
HPIS2
High-pass filter enable for AOI function on Interrupt 2.
(0: filter bypassed; 1: filter enabled)
HPIS1
High-pass filter enable for AOI function on Interrupt 1.
(0: filter bypassed; 1: filter enabled)
Table 31. High-pass filter mode configuration
HPM1
HPM0
High-pass filter mode
0
0
Normal mode (reset by reading REFERENCE/DATACAPTURE (26h) register)
0
1
Reference signal for filtering
1
0
Normal mode
1
1
Autoreset on interrupt event
Table 32. Low-power mode - high-pass filter cutoff frequency
HPCF[2:1]
ft [Hz]
@ 1 Hz
ft [Hz]
@ 10 Hz
ft [Hz]
@ 25 Hz
ft [Hz]
@ 50 Hz
ft [Hz]
@ 100 Hz
ft [Hz]
@ 200Hz
ft [Hz]
@ 400 Hz
ft [Hz]
@ 1.6kHz
ft [Hz]
@ 5kHz
00
0.02
0.2
0.5
1
2
4
8
32
100
01
0.008
0.08
0.2
0.5
1
2
4
16
50
10
0.004
0.04
0.1
0.2
0.5
1
2
8
25
11
0.002
0.02
0.05
0.1
0.2
0.5
1
4
12



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