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MMA8652FC 数据表(PDF) 50 Page - NXP Semiconductors

部件名 MMA8652FC
功能描述  MMA8652FC, 3-Axis, 12-bit, Digital Accelerometer
PDF  65 Pages
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制造商  NXP [NXP Semiconductors]
网页  http://www.nxp.com
标志 NXP - NXP Semiconductors

MMA8652FC 数据表(HTML) 50 Page - NXP Semiconductors

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MMA8652FC
Sensors
50
Freescale Semiconductor, Inc.
6.10.6
0x28 PULSE_WIND register (Read/Write)
Bits WIND7 – WIND0 define the maximum interval of time that can elapse after the end of the latency interval, in which the start of
the second pulse event must be detected (provided the device has been configured for double pulse detection). The detected
second pulse width must be shorter than the time limit constraints specified by the PULSE_TMLT register, but the end of the
double pulse need not finish within the time specified by the PULSE_WIND register.
The minimum time step for the pulse window is defined in Table 87 and Table 88. The maximum time is the time step at the ODR,
oversampling mode and LPF filter option multiplied by 255.
Table 85. 0x28: PULSE_WIND Second Pulse Time Window register
Back to Register Address Map
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
WIND7
WIND6
WIND5
WIND4
WIND3
WIND2
WIND1
WIND0
Table 86. PULSE_WIND register
Bit(s)
Field
Description
7–0
WIND[7:0]
Second Pulse Time Window
0000_0000 (default value)
Table 87. Time Step for PULSE Detection window at ODR and Power mode (Reg 0x0F) Pulse_LPF_EN = 1
ODR (Hz)
Max Time Range (s)
Time Step (ms)
Normal
LPLN
HighRes
LP
Normal
LPLN
HighRes
LP
800
0.638
0.638
0.638
0.638
2.5
2.5
2.5
2.5
400
1.276
1.276
1.276
1.276
5
5
5
5
200
2.56
2.56
1.276
2.56
10
10
5
10
100
5.1
5.1
1.276
5.1
20
20
5
20
50
10.2
10.2
1.276
10.2
40
40
5
40
12.5
10.2
40.8
1.276
40.8
40
160
5
160
6.25
10.2
40.8
1.276
81.6
40
160
5
320
1.56
10.2
40.8
1.276
81.6
40
160
5
320
Table 88. Time Step for PULSE Detection window at ODR and Power mode (Reg 0x0F) Pulse_LPF_EN = 0
ODR (Hz)
Max Time Range (s)
Time Step (ms)
Normal
LPLN
HighRes
LP
Normal
LPLN
HighRes
LP
800
0.318
0.318
0.318
0.318
1.25
1.25
1.25
1.25
400
0.318
0.318
0.318
0.638
1.25
1.25
1.25
2.5
200
0.638
0.638
0.318
1.276
2.5
2.5
1.25
5
100
1.276
1.276
0.318
2.56
5
5
1.25
10
50
2.56
2.56
0.318
5.1
10
10
1.25
20
12.5
2.56
10.2
0.318
20.4
10
40
1.25
80
6.25
2.56
10.2
0.318
20.4
10
40
1.25
80
1.56
2.56
10.2
0.318
20.4
10
40
1.25
80



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