0x0D: WHO_AM_I Device ID Register
The device identification register identifies the part. The default value is 0x3A. This value is factory programmed. Consult the
factory for custom alternate values.
0x0D: WHO_AM_I Device ID Register (Read Only)
Bit 7
0
Bit 6
0
Bit 5
1
Bit 4
1
Bit 3
1
Bit 2
0
Bit 1
1
Bit 0
0
0x0E: XYZ_DATA_CFG Register
The XYZ_DATA_CFG register sets the dynamic range.
0x0E: XYZ_DATA_CFG (Read/Write)
Bit 7
0
Bit 6
0
Bit 5
0
Bit 4
0
Bit 3
0
Bit 2
0
Bit 1
FS1
Bit 0
FS0
Table 16. XYZ Data Configuration Descriptions
FS[1:0]
Output buffer data format full scale. Default value: 00 (2g).
The default full scale value range is 2g and the high pass filter is disabled.
Table 17. Full Scale Range
FS1
0
0
1
1
FS0
0
1
0
1
Full Scale Range
2
4
8
Reserved
0x0F: HP_FILTER_CUTOFF High Pass Filter Register
This register sets the high-pass filter cut-off frequency for removal of the offset and slower changing acceleration data. The
filter cut-off options change based on the data rate selected as shown in Table 19 . For details of implementation on the high pass
filter, refer to Freescale application note, AN4071.
0x0F HP_FILTER_CUTOFF: High Pass Filter Register (Read/Write)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0
0
Pulse_HPF_BYP Pulse_LPF_EN
0
0
SEL1
SEL0
Table 18. High Pass Filter Cut-off Register Descriptions
Bypass High Pass Filter for Pulse Processing Function.
Pulse_HPF_BYP
Pulse_LPF_EN
SEL[1:0]
0: HPF enabled for Pulse Processing, 1: HPF Bypassed for Pulse Processing
Default value: 0.
Enable Low Pass Filter for Pulse Processing Function.
0: LPF disabled for Pulse Processing, 1: LPF Enabled for Pulse Processing
Default value: 0.
HPF Cut-off frequency selection.
Default value: 00 (see Table 19 ).
MMA8453Q
Sensors
22
Freescale Semiconductor, Inc.
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