MMA8451Q datasheet(6/53 Pages) FREESCALE

6 / 53 page

Sensors

Freescale Semiconductor

MMA8451Q

Application Notes for Reference

The following is a list of Freescale Application Notes written for the MMA8451, 2, 3Q:

• 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

Block Diagram and Pin Description

1.1

Block Diagram

Figure 1. Block Diagram

1.2

Pin Description

Figure 2. Direction of the Detectable Accelerations

14-bit

SDA

SCL

I2C

Embedded

DSP

Functions

C to V

Internal

OSC

Clock

GEN

ADC

Converter

VDDIO

VSS

X-axis

Transducer

Y-axis

Transducer

Z-axis

Transducer

32 Data Point

Configurable

FIFO Buffer

with Watermark

Freefall

and Motion

Detection

Transient

Detection

(i.e., fast motion,

jolt)

Enhanced

Orientation with

Hysteresis

and Z-lockout

Shake Detection

through

Motion

Threshold

Single, Double

Auto-WAKE/Auto-SLEEP Configurable with debounce counter and multiple motion interrupts for control

Auto-WAKE/SLEEP

ACTIVE Mode

SLEEP

VDD

& Directional Tap

Detection

INT1

INT2

MODE Options

Low Power

Low Noise + Power

High Resolution

Normal

MODE Options

Low Power

Low Noise + Power

High Resolution

Normal

ACTIVE Mode

WAKE

DIRECTION OF THE

DETECTABLE ACCELERATIONS

(BOTTOM VIEW)

(TOP VIEW)

Earth Gravity

MMA8451Q Datasheet(PDF) 6 Page - Freescale Semiconductor, Inc

MMA8451Q Datasheet(HTML) 6 Page - Freescale Semiconductor, Inc

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