MMA8450QT Freescale Semiconductor, MMA8450QT Datasheet - Page 31

• 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 28. Portrait-to-Landscape Trip Angle Thresholds Look-up Table
0x20 - 0x22 PL_L_P_THS_REG1, 2, 3 Landscape-to-Portrait Threshold Registers
angle for the image transition from the Landscape orientation to the Portrait orientation. The angle can be selected from
and the corresponding values for that angle should be written into the three PL_L_P_THS Registers.
Table 29. PL_L_P_THS_REG1 Description
Sensors
Freescale Semiconductor
0x20 PL_L_P_THS_REG1 Register (Read/Write)
0x21 PL_L_P_THS_REG2 Register (Read/Write)
Table 27. PL_P_L_THS_REG3 Description
Table 30. PL_L_P_THS_REG2 Description
0x22 PL_L_P_THS_REG3 Register (Read/Write)
Table 31. PL_L_P_THS_REG3 Description
L_P_THS[7]
L_P_THS[7]
L_P_THS[7]
The following registers represent the Landscape-to-Portrait trip threshold registers. These registers are used to set the trip
Portrait-to-Landscape
Bit 7
Bit 7
Bit 7
L_P_THS
P_L_THS
L_P_THS
L_P_THS
Trip Angle
15
20
25
30
35
40
45
50
55
60
L_P_THS[6]
L_P_THS[6]
L_P_THS[6]
Bit 6
Bit 6
Bit 6
Landscape-to-Portrait Threshold Register 1. Default value: 60° → 0010_1101.
Portrait-to-Landscape Threshold Register 3. Default value: 30°→ 1101_0100.
Landscape-to-Portrait Threshold Register 2. Default value: 60° → 0100_0001.
Landscape-to-Portrait Threshold Register 3. Default value: 60° → 1010_0010.
L_P_THS[5]
PL_P_L_THS_REG1
L_P_THS[5]
L_P_THS[5]
Bit 5
Bit 5
Bit 5
0x1A
0x1B
0x1D
0x2D
0x17
0x18
0x18
0x20
0x23
0x27
L_P_THS[4]
L_P_THS[4]
L_P_THS[4]
Bit 4
Bit 4
Bit 4
L_P_THS[3]
L_P_THS[3]
L_P_THS[3]
Bit 3
PL_P_L_THS_REG2
Bit 3
Bit 3
0xF3
0x32
0x75
0x14
0x92
0x92
0x00
0x31
0x71
0x41
L_P_THS[2]
L_P_THS[2]
L_P_THS[2]
Bit 2
Bit 2
Bit 2
L_P_THS[1]
L_P_THS[1]
L_P_THS[1]
Bit 1
PL_P_L_THS_REG3
Bit 1
Bit 1
0xD5
0xD9
0xB9
0xA2
0x77
0x23
0x59
0x77
0x33
0x00
L_P_THS[0]
L_P_THS[0]
L_P_THS[0]
MMA8450Q
Bit 0
Bit 0
Bit 0
Table 32
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