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MMA8652FC 데이터시트(PDF) 58 Page - Freescale Semiconductor, Inc

부품명 MMA8652FC
상세설명  Xtrinsic MMA8652FC 3-Axis, 12-bit Digital Accelerometer
PDF  77 Pages
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제조업체  FREESCALE [Freescale Semiconductor, Inc]
홈페이지  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MMA8652FC 데이터시트(HTML) 58 Page - Freescale Semiconductor, Inc

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MMA8652FC
Sensors
58
Freescale Semiconductor, Inc.
6.11.6
0x28 PULSE_WIND register (Read/Write)
Register quick jump table
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 57 and Table 58. The maximum time is the time step at the ODR,
oversampling mode and LPF filter option multiplied by 255.
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
WIND7
WIND6
WIND5
WIND4
WIND3
WIND2
WIND1
WIND0
Figure 52. 0x28: PULSE_WIND Second Pulse Time Window register
Table 56. PULSE_WIND register
Bit(s)
Field
Description
7–0
WIND[7:0]
Second Pulse Time Window
0000_0000 (default value)
Table 57. 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 58. 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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