MMA8451Q 데이터 시트보기 (PDF) - Freescale Semiconductor

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MMA8451Q

3-Axis, 14-bit/8-bit Digital Accelerometer

Freescale Semiconductor 

1

Block Diagram and Pin Description

VDD

VDDIO

VSS

X-axis

Transducer

Y-axis

Transducer

Z-axis

Transducer

Internal

OSC

Clock

GEN

C to V

Converter

14-bit

ADC

INT1

INT2

Embedded

DSP

I2C

Functions

SDA

SCL

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

& Directional Tap

Detection

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

MODE Options

Low Power

Low Noise + Power

High Resolution

Normal

ACTIVE Mode

WAKE

Auto-WAKE/SLEEP

Figure 1. Block Diagram

ACTIVE Mode

SLEEP

MODE Options

Low Power

Low Noise + Power

High Resolution

Normal

Z

Earth Gravity

X

1

13

1

Y

9

5

(TOP VIEW)

DIRECTION OF THE

DETECTABLE ACCELERATIONS

(BOTTOM VIEW)

Figure 2. Direction of the Detectable Accelerations

Sensors

Freescale Semiconductor, Inc.

MMA8451Q

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