6
Register Descriptions
Table 12. Register Address Map
Name
STATUS (1)(2)
Type
R
Register
Address
0x00
Auto-Increment Address
F_READ=0 F_READ=1
0x01
Default
00000000
Hex
Value
0x00
Comment
Real time status
OUT_X_MSB (1)(2)
OUT_X_LSB (1)(2)
R
R
0x01
0x02
0x02
0x03
0x03
0x00
Output
Output
[7:0] are 8 MSBs of 10-bit sample.
[7:6] are 2 LSBs of 10-bit sample
OUT_Y_MSB
(1)(2)
R
0x03
0x04
0x05
Output
[7:0] are 8 MSBs of 10-bit sample
OUT_Y_LSB
(1)(2)
R
0x04
0x05
0x00
Output
[7:6] are 2 LSBs of 10-bit sample
OUT_Z_MSB (1)(2)
OUT_Z_LSB (1)(2)
Reserved
Reserved
SYSMOD (1)(2)
R
R
R
R
R
0x05
0x06
0x07
0x08
0x0B
0x06
0x00
0x0C
0x00
Output
Output
00000000
0x00
[7:0] are 8 MSBs of 10-bit sample
[7:6] are 2 LSBs of 10-bit sample
Reserved. Read return 0x00.
Reserved. Read return 0x00.
Current System Mode
INT_SOURCE
(1)(2)
R
0x0C
0x0D
00000000
0x00
Interrupt status
WHO_AM_I
(1)
R
0x0D
0x0E
00111010
0x3A
Device ID (0x3A)
TRANSIENT_THS
XYZ_DATA_CFG (1) (3)
HP_FILTER_CUTOFF (1)(3)
PL_STATUS (1)(2)
PL_CFG (1)(3)
PL_COUNT (1)(3)
PL_BF_ZCOMP (1)(3)
P_L_THS_REG (1)(3)
FF_MT_CFG (1)(3)
FF_MT_SRC (1)(2)
FF_MT_THS (1)(3)
FF_MT_COUNT (1)(3)
Reserved
Reserved
Reserved
Reserved
TRANSIENT_CFG (1)(3)
TRANSIENT_SRC (1)(2)
(1)(3)
R/W
R/W
R
R/W
R
R
R
R/W
R
R/W
R/W
R
R
R
R
R/W
R
R/W
0x0E
0x0F
0x10
0x11
0x12
0x13
0x14
0x15
0x16
0x17
0x18
0x19
0x1A
0x1B
0x1C
0x1D
0x1E
0x1F
0x0F
0x10
0x11
0x12
0x13
0x14
0x15
0x16
0x17
0x18
0x19
0x1E
0x1F
0x20
00000000
00000000
00000000
10000000
00000000
01000100
10000100
00000000
00000000
00000000
00000000
00000000
00000000
00000000
0x00
0x00
0x00
0x80
0x00
0x44
0x84
0x00
0x00
0x00
0x00
0x00
0x00
0x00
Dynamic Range Settings
Cut-off frequency is set to 16 Hz
@ 800 Hz
Landscape/Portrait orientation
status
Landscape/Portrait configuration.
Landscape/Portrait debounce
counter
Back-Front, Z-Lock Trip threshold
Portrait to Landscape Trip Angle is
29°
Freefall/Motion functional block
configuration
Freefall/Motion event source
register
Freefall/Motion threshold register
Freefall/Motion debounce counter
Reserved. Read return 0x00.
Reserved. Read return 0x00.
Reserved. Read return 0x00.
Reserved. Read return 0x00.
Transient functional block
configuration
Transient event status register
Transient event threshold
TRANSIENT_COUNT
(1)(3)
R/W
0x20
0x21
00000000
0x00
Transient debounce counter
PULSE_CFG (1)(3)
PULSE_SRC (1)(2)
R/W
R
0x21
0x22
0x22
0x23
00000000
00000000
0x00
0x00
ELE, Double_XYZ or Single_XYZ
EA, Double_XYZ or Single_XYZ
PULSE_THSX
PULSE_THSY
(1)(3)
(1)(3)
R/W
R/W
0x23
0x24
0x24
0x25
00000000
00000000
0x00
0x00
X pulse threshold
Y pulse threshold
PULSE_THSZ (1)(3)
R/W
0x25
0x26
00000000
0x00
Z pulse threshold
MMA8453Q
Sensors
18
Freescale Semiconductor, Inc.
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