MMA8450QT Freescale Semiconductor, MMA8450QT Datasheet - Page 7

• 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

PU = Portrait Up, LR = Landscape Right, PD = Portrait Down, LL = Landscape Left, Back and Front. There are several registers
to configure the orientation detection and are described in detail in the register setting section.
Sensors
Freescale Semiconductor
Figure 3
shows the device configuration in the 6 different orientation modes. These orientations are defined as the following:
SDA
Xout @ -1g
Yout @ 0g
Zout @ 0g
LL
1.8V
Pin 1
4.7kΩ
SCL
1.8V
4.7kΩ
Top View
Yout @ -1g
Xout @ 0g
Zout @ 0g
Xout @ 0g
Yout @ 1g
Zout @ 0g
0.1μF
1.8V
PU
PD
Figure 3. Landscape/Portrait Orientation
Figure 4. Application Diagram
Earth Gravity
1
2
3
4
5
Xout @ 1g
Yout @ 0g
Zout @ 0g
VDD
NC
NC
SCL
GND
LR
16
6
MMA8450Q
15
7
14
8
INT1
GND
INT2
GND
GND
13
12
11
10
9
Side View
Zout @ -1g
Xout @ 0g
Yout @ 0g
Xout @ 0g
Yout @ 0g
Zout @ 1g
FRONT
BACK
4.7μF
INT1
INT2
EN
SA0
MMA8450Q
7