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MMA8452Q
Sensors
Freescale Semiconductor, Inc.
3
1
Block Diagram and Pin Description
Figure 1. Block Diagram
Figure 2. Direction of the Detectable Accelerations
12-bit
SDA
SCL
I
2
C
Embedded
DSP
Functions
C to V
Internal
OSC
Clock
GEN
ADC
Converter
VDDIO
VSS
X-axis
Transducer
Y-axis
Transducer
Z-axis
Transducer
Freefall
and Motion
Detection
Transient
Detection
(i.e., fast motion,
transient)
Orientation with
Set Hysteresis
and Z-lockout
Shake Detection
through
Motion
Threshold
Auto-WAKE/Auto-SLEEP Configurable with debounce counter and multiple motion interrupts for control
Auto-WAKE/SLEEP
ACTIVE Mode
SLEEP
VDD
INT1
INT2
ACTIVE Mode
WAKE
Single, Double
and Directional
Tap Detection
MODE Options
Low Power
Low Noise + Low Power
High Resolution
Normal
MODE Options
Low Power
Low Noise + Low Power
High Resolution
Normal
1
DIRECTION OF THE
DETECTABLE ACCELERATIONS
(BOTTOM VIEW)
5
9
13
X
Y
Z
1
(TOP VIEW)
Earth Gravity