MMA8452QR1 Freescale Semiconductor, MMA8452QR1 Datasheet - Page 7

• Manufacturer Part Number: MMA8452QR1
• Description: Board Mount Accelerometers LOW G 3-AXIS 12BT EX VLT
• Manufacturer: Freescale Semiconductor

Specifications of MMA8452QR1

• Sensing Axis: X, Y, Z
• Acceleration: 2 g, 4 g, 8 g
• Digital Output - Number Of Bits: 8 bit, 12 bit
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 1.95 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Digital Output - Bus Interface: I2C
• Shutdown: Yes
• Sensitivity: 256 count/g, 512 count/g, 1024 count/g
• Package / Case: QFN-16
• Output Type: Digital
• Rohs Compliant: Yes
• Peak Reflow Compatible (260 C): Yes
• Acceleration Range: ± 2g, ± 4g, ± 8g
• No. Of Axes: 3
• Ic Interface Type: I2C
• Sensor Case Style: QFN
• No. Of Pins: 16
• Supply Voltage Range: 1.95V To 3.6V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PU = Portrait Up, LR = Landscape Right, PD = Portrait Down, LL = Landscape Left, BACK and FRONT side views. There are
several registers to configure the orientation detection and are described in detail in the register setting section.
Sensors
Freescale Semiconductor
Figure 3
SDA
shows the device configuration in the 6 different orientation modes. These orientations are defined as the following:
Xout @ -1g
Yout @ 0g
Zout @ 0g
VDDIO
LL
Pin 1
4.7kΩ
SCL
Interface Voltage
VDDIO
1.6V - 3.6V
4.7kΩ
Top View
Yout @ -1g
Xout @ 0g
Zout @ 0g
Xout @ 0g
Yout @ 1g
Zout @ 0g
PU
PD
Figure 3. Landscape/Portrait Orientation
0.1μF
Figure 4. Application Diagram
Earth Gravity
0.1μF
Xout @ 1g
Yout @ 0g
Zout @ 0g
1
2
3
4
5
LR
VDDIO
BYP
NC
SCL
GND
16
6
MMA8452Q
15
7
14
8
1.95V - 3.6V
VDD
GND
INT2
GND
INT1
NC
13
12
11
10
9
Side View
Zout @ -1g
Xout @ 0g
Yout @ 0g
Xout @ 0g
Yout @ 0g
Zout @ 1g
FRONT
BACK
4.7μF
MMA8452Q
INT1
INT2
SA0
7