MMA8452QR1 Freescale Semiconductor, MMA8452QR1 Datasheet - Page 6

• 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

Application Notes for Reference
1
1.1
1.2
6
MMA8452Q
The following is a list of Freescale Application Notes written for the MMA8451, 2, 3Q:
VDDIO
• AN4068, Embedded Orientation Detection Using the MMA8451, 2, 3Q
• AN4069, Offset Calibration of the MMA8451, 2, 3Q
• AN4070, Motion and Freefall Detection Using the MMA8451, 2, 3Q
• AN4071, High Pass Data and Functions Using the MMA8451, 2,3Q
• AN4072, MMA8451, 2, 3Q Single/Double and Directional Tap Detection
• AN4073, Using the 32 Sample First In First Out (FIFO) in the MMA8451Q
• AN4074, Auto-Wake/Sleep Using the MMA8451, 2, 3Q
• AN4075, How Many Bits are Enough? The Trade-off Between High Resolution and Low Power Using Oversampling Modes
• AN4076, Data Manipulation and Basic Settings of the MMA8451, 2, 3Q
• AN4077, MMA8451, 2, 3Q Design Checklist and Board Mounting Guidelines
VDD
VSS
MODE Options
Low Power
Low Noise + Power
High Resolution
Normal
Block Diagram and Pin Description
Block Diagram
Pin Description
Auto-WAKE/Auto-SLEEP Configurable with debounce counter and multiple motion interrupts for control
DETECTABLE ACCELERATIONS
Y
and Motion
X
Detection
DIRECTION OF THE
Freefall
Transducer
Transducer
Transducer
(TOP VIEW)
X-axis
Y-axis
Z-axis
1
ACTIVE Mode
Figure 2. Direction of the Detectable Accelerations
Z
(i.e., fast motion,
WAKE
Transient
Detection
jolt)
Converter
C to V
Figure 1. Block Diagram
Earth Gravity
Internal
OSC
Orientation with
Set Hysteresis
and Z-lockout
Auto-WAKE/SLEEP
Clock
GEN
12-bit
ADC
Shake Detection
Threshold
through
Motion
13
9
ACTIVE Mode
(BOTTOM VIEW)
Embedded
Functions
SLEEP
DSP
& Directional Tap
Single, Double
Detection
INT1
INT2
Freescale Semiconductor
MODE Options
Low Power
Low Noise + Power
High Resolution
Normal
1
5
I
2
C
Sensors
SDA
SCL