MMA8450QT Freescale Semiconductor, MMA8450QT Datasheet - Page 21

• Manufacturer Part Number: MMA8450QT
• Description: Board Mount Accelerometers 12bit 3-Axis FIFO HPF PL
• Manufacturer: Freescale Semiconductor

Specifications of MMA8450QT

• Sensing Axis: X, Y, Z
• Acceleration: 2 g, 4 g, 8 g
• Digital Output - Number Of Bits: 12 bit
• Supply Voltage (max): 1.89 V
• Supply Voltage (min): 1.71 V
• Supply Current: 3 uA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Shutdown: Yes
• Sensitivity: 0.976 mg/digit, 1.953 mg/digit, 3.906 mg/digit
• Package / Case: QFN-16
• Output Type: Digital
• Package Type: QFN
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Product Depth (mm): 3mm
• Product Height (mm): 1mm
• Product Length (mm): 3mm
• Mounting: Surface Mount
• Pin Count: 16
• Acceleration Range: ± 2g, ± 4g, ± 8g
• No. Of Axes: 3
• Ic Interface Type: I2C, Serial
• Sensor Case Style: QFN
• No. Of Pins: 16
• Supply Voltage Range: 1.71V To 1.89V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 11. Register Address Map
1. Register contents are preserved when transition from “ACTIVE” to “STANDBY” mode occurs.
2. Register contents are reset when transition from “STANDBY” to “ACTIVE” mode occurs.
3. Modification of this register’s contents can only occur when device is “STANDBY” mode
4. Register contents can be modified anytime in “STANDBY” or “ACTIVE” mode. A write to this register will cause a reset of the corresponding
Note: Auto-increment addresses which are not a simple increment are highlighted in bold. The auto-increment addressing is only enabled when
Sensors
Freescale Semiconductor
internal system debounce counter.
TRANSIENT_COUNT
PL_P_L_THS_REG1
PL_P_L_THS_REG2
PL_P_L_THS_REG3
PL_L_P_THS_REG1
PL_L_P_THS_REG2
PL_L_P_THS_REG3
FF_MT_COUNT_1
FF_MT_COUNT_2
TRANSIENT_CFG
TRANSIENT_SRC
TRANSIENT_THS
FF_MT_CFG_1
FF_MT_SRC_1
FF_MT_THS_1
FF_MT_CFG_2
FF_MT_SRC_2
FF_MT_THS_2
device registers are read using I
stop-bit is detected.
ASLP_COUNT
PULSE_THSX
PULSE_THSY
PULSE_THSZ
PULSE_TMLT
PULSE_WIND
PULSE_LTCY
PULSE_CFG
PULSE_SRC
CTRL_REG1
CTRL_REG2
CTRL_REG3
CTRL_REG4
CTRL_REG5
OFF_X
OFF_Y
OFF_Z
(1)(4)
(1)(4)
(1)(4)
(1)(4)
(1)(2)
(1)(4)
(1)(4)
(1)(4)
(1)(4)
(1)(4)
(1)(3)
(1)(4)
(1)(4)
(1)(3)
(1)(3)
(1)(4)
(1)(4)
(1)(3)
(1)(3)
(1)(4)
(1)(2)
(1)(4)
(1)(2)
(1)(3)
(1)(3)
(1)(3)
(1)(4)
(1)(2)
(1)(4)
(1)(4)
(1)(4)
(1)(4)
(1)(4)
(1)(4)
(1)(3)
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
R
R
R
2
C burst read mode. Therefore the internal storage of the auto-increment address is clear whenever a
0x1D
0x1E
0x1F
0x2A
0x2B
0x2C
0x2D
0x2E
0x2F
0x3A
0x3B
0x3C
0x3D
0x3E
0x3F
0x20
0x21
0x22
0x23
0x24
0x25
0x26
0x27
0x28
0x29
0x30
0x31
0x32
0x33
0x34
0x35
0x36
0x37
0x38
0x39
0x1E
0x1F
0x2A
0x2B
0x2C
0x2D
0x2E
0x2F
0x3A
0x3B
0x3C
0x3D
0x3E
0x3F
0x0F
0x20
0x21
0x22
0x23
0x24
0x25
0x26
0x27
0x28
0x29
0x30
0x31
0x32
0x33
0x34
0x35
0x36
0x37
0x38
0x39
00011010
00100010
11010100
00101101
01000001
10100010
00000000
00000000
00000000
00000000
00000000
00000000
00000000
00000000
00000000
00000000
00000000
00000000
00000000
00000000
00000000
00000000
00000000
00000000
00000000
00000000
00000000
00000000
00000000
00000000
00000000
00000000
00000000
00000000
00000000
Interrupt pin (INT1/INT2) map configuration
Portrait-to-Landscape Trip Angle is 30°
Portrait-to-Landscape Trip Angle is 30°
Portrait-to-Landscape Trip Angle is 30°
Landscape-to-Portrait Trip Angle is 60°
Landscape-to-Portrait Trip Angle is 60°
Landscape-to-Portrait Trip Angle is 60°
Freefall/Motion1 event source register
Freefall/Motion2 event source register
Freefall/Motion1 debounce counter
Freefall/Motion2 debounce counter
Freefall/Motion1 threshold register
Freefall/Motion2 threshold register
ELE, Double_XYZ or Single_XYZ
ST = Disabled, SLPE = Disabled,
EA, Double_XYZ or Single_XYZ
ODR = 400 Hz, Standby Mode.
Transient event status register
Freefall/Motion1 configuration
Freefall/Motion2 configuration
Counter setting for auto-sleep
Transient debounce counter
Window time for 2nd pulse
Latency time for 2nd pulse
Transient event threshold
Interrupt enable register
MODS = Normal mode.
Transient configuration
X-axis offset adjust
Y-axis offset adjust
Time limit for pulse
Z-axis offset adjust
X pulse threshold
Y pulse threshold
Z pulse threshold
IPOL, PP_OD
MMA8450Q
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