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MMA8652FC Datasheet(PDF) 37 Page - Freescale Semiconductor, Inc

Part # MMA8652FC
Description  Xtrinsic MMA8652FC 3-Axis, 12-bit Digital Accelerometer
PDF  77 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MMA8652FC Datasheet(HTML) 37 Page - Freescale Semiconductor, Inc

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MMA8652FC
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Freescale Semiconductor, Inc.
37
6.7.2
0x0F: HP_FILTER_CUTOFF High-Pass Filter register
The High-Pass Filter register sets the high-pass filter cutoff frequency for removal of the offset and slower changing acceleration
data. The output of this filter is logged in the data registers (0x01–0x06) when bit 4 (HPF_OUT) of Register 0x0E is set. The filter
cutoff options change based on the data rate selected, as shown in Table 24. For more information about the high-pass filter, see
application note AN4083, Data Manipulation and Basic Settings for Xtrinsic MMA865xFC Accelerometers.
Register quick jump table
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
00
Pulse_HPF_BY
Pulse_LPF_EN
0
0
SEL1
SEL0
Figure 29. 0x0F HP_FILTER_CUTOFF: High-Pass filter register (Read/Write)
Table 23. High-Pass filter cutoff register
Bit(s)
Field
Description
5
Pulse_HPF_BYP
Bypass High-Pass Filter (HPF) for pulse processing function
0 HPF is enabled for pulse processing (default)
1 HPF is bypassed for pulse processing
4
Pulse_LPF_EN
Enable Low-Pass Filter (LPF) for pulse processing function
0 LPF is disabled for pulse processing (default)
1 LPF is enabled for pulse processing
1–0
SEL[1:0]
HPF cutoff frequency selection
00 (default value, see Table 24)
01, 10, 11 TBD
Table 24. High-Pass filter cutoff options
SEL1 SEL0
800 Hz
400 Hz
200 Hz
100 Hz
50 Hz
12.5 Hz
6.25 Hz
1.56 Hz
Oversampling Mode = Normal
0
0
16 Hz
16 Hz
8 Hz
4 Hz
2 Hz
2 Hz
2 Hz
2 Hz
0
1
8 Hz
8 Hz
4 Hz
2 Hz
1 Hz
1 Hz
1 Hz
1 Hz
1
0
4 Hz
4 Hz
2 Hz
1 Hz
0.5 Hz
0.5 Hz
0.5 Hz
0.5 Hz
1
1
2 Hz
2 Hz
1 Hz
0.5 Hz
0.25 Hz
0.25 Hz
0.25 Hz
0.25 Hz
Oversampling Mode = Low Noise Low Power
0
0
16 Hz
16 Hz
8 Hz
4 Hz
2 Hz
0.5 Hz
0.5 Hz
0.5 Hz
0
1
8 Hz
8 Hz
4 Hz
2 Hz
1 Hz
0.25 Hz
0.25 Hz
0.25 Hz
1
0
4 Hz
4 Hz
2 Hz
1 Hz
0.5 Hz
0.125 Hz
0.125 Hz
0.125 Hz
1
1
2 Hz
2 Hz
1 Hz
0.5 Hz
0.25 Hz
0.063 Hz
0.063 Hz
0.063 Hz
Oversampling Mode = High Resolution
0
0
16 Hz
16 Hz
16 Hz
16 Hz
16 Hz
16 Hz
16 Hz
16 Hz
0
1
8 Hz
8 Hz
8 Hz
8 Hz
8 Hz
8 Hz
8 Hz
8 Hz
1
0
4 Hz
4 Hz
4 Hz
4 Hz
4 Hz
4 Hz
4 Hz
4 Hz
1
1
2 Hz
2 Hz
2 Hz
2 Hz
2 Hz
2 Hz
2 Hz
2 Hz
Oversampling Mode = Low Power
0
0
16 Hz
8 Hz
4 Hz
2 Hz
1 Hz
0.25 Hz
0.25 Hz
0.25 Hz
0
1
8 Hz
4 Hz
2 Hz
1 Hz
0.5 Hz
0.125 Hz
0.125 Hz
0.125 Hz
1
0
4 Hz
2 Hz
1 Hz
0.5 Hz
0.25 Hz
0.063 Hz
0.063 Hz
0.063 Hz
1
1
2 Hz
1 Hz
0.5 Hz
0.25 Hz
0.125 Hz
0.031 Hz
0.031 Hz
0.031 Hz



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