28526 Parallax Inc, 28526 Datasheet

Board Mount Accelerometers 3-Axis Accel Module MMA7455

28526

Manufacturer Part Number

28526

Description

Board Mount Accelerometers 3-Axis Accel Module MMA7455

Manufacturer

Parallax Inc

Datasheet

1.28526.pdf (7 pages)

Specifications of 28526

Sensing Axis

X, Y, Z

Acceleration

2 g, 4 g, 8 g

Digital Output - Number Of Bits

10 bit

Supply Voltage (max)

5.5 V

Supply Voltage (min)

2.5 V

Supply Current

0.5 mA to 3 mA

Maximum Operating Temperature

+ 85 C

Minimum Operating Temperature

- 40 C

Digital Output - Bus Interface

I2C, SPI

Sensitivity

64 LSB/g

Package / Case

DIP-8

Output Type

Digital

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Current page: 1 of 7
Download datasheet (757Kb)

MMA7455 3-Axis Accelerometer Module (#28526)

General Description

The Freescale Semiconductor MMA7455L 3-Axis

Digital Output Accelerometer is a low power,

micro-machined sensor capable of measuring

acceleration along its X, Y, and Z axes.

offers several convenient integrated features

including an analog to digital converter (ADC),

digital low-pass filter, and selectable sensitivity

ranges of ±2g, ±4g, or ±8g. This device can

be easily configured to detect quick motion

pulses as single-taps, double-taps, and 0g

(free-fall) conditions on any or all axes and

provides configurable interrupt pins (INT1 and

INT2) for each type of event.

Flexibility and compatibility are designed into

this module.

and I/O voltage level-shifters make this module

especially easy to connect to virtually any

microcontroller. It operates over a wide range

of supply voltages from 2.5 VDC to 5.5 VDC and

communicates via Serial Peripheral Interface

(SPI) or Inter-Integrated Circuit (I

An on-board voltage regulator

MMA7455 3-Axis Accelerometer Module (#28526)

C) bus.

Web Site: www.parallax.com

Forums: forums.parallax.com

Sales: sales@parallax.com

Technical: support@parallax.com

Features

Application Ideas

Key Specifications

Note: Demonstration software files may be

downloaded from the 28526 product page at

www.parallax.com.

• Wide input voltage range

• Digital output (SPI/I

• Selectable sensitivity: 8-bit mode

• User-configurable interrupts (INT1/INT2)

• User-settable registers for calibrating

• Low current operation

• Compact, 8-pin DIP breadboard-friendly

• Inertial measurement units

• Tilt sensing for remote control systems

• Single-tap or double-tap user input

• Multi-axis vibration measurement

• Free-fall detection

• Motion sensing and data logging

• Model airplane flight stabilization

• Power requirements: 2.5 – 5.5 VDC;

• Communication: SPI or I

• Dimensions: 0.5 x 0.6 x 0.46 in

• Operating temperature: -40 to +185 °F

(±2g/±4g/±8g) or 10-bit mode (±8g)

each axis

package: 0.5” x 0.6” (12.7 x 15.2 mm)

26 µA standby, 0.5 – 3 mA active

(12.7 x 15.2 x 11.7 mm)

(-40 to +85 °C)

Office: (916) 624-8333

Fax: (916) 624-8003

Sales: (888) 512-1024

Tech Support: (888) 997-8267

v1.1 9/24/2009 Page 1 of 6

Related parts for 28526

28526 Summary of contents

Page 1

... Dimensions: 0.5 x 0.6 x 0.46 in (12.7 x 15.2 x 11.7 mm) • Operating temperature: -40 to +185 °F (-40 to +85 °C) Note: Demonstration software files may be downloaded from the 28526 product page at www.parallax.com. MMA7455 3-Axis Accelerometer Module (#28526) Office: (916) 624-8333 Fax: (916) 624-8003 Sales: (888) 512-1024 ...

Page 2

... DATA Pin Input Voltage Pin Current Maximum Acceleration (all axes) Copyright © Parallax Inc Enable (1) For operational ranges, see the Operating Min 0 -40 -0.5 -50 -- MMA7455 3-Axis Accelerometer Module (#28526 Pin Type Power n/a Output Output Power Input Input/Output Input Typ Max Unit -- 6 ...

Page 3

... When an external device drives the CLK or CS pin low, the I/O pin on the MMA7455L is pulled Copyright © Parallax Inc. Min 2.5 (1)(2) -- (1 MMA7455 3-Axis Accelerometer Module (#28526) Typ Max Unit 3.3 – 5 5.5 V 437 555 μA <3 4 μ ° ...

Page 4

... Copyright © Parallax Inc. 0.016 g count Acceleration Output Value (hex/decimal) -2g $81 -1g $C1 0g $00 +1g $3F +2g $7F -4g $81 -1g $E1 0g $00 +1g $1F +4g $7F -8g $81 -1g $F1 0g $00 +1g $0F +8g $7F MMA7455 3-Axis Accelerometer Module (#28526 -127 - 127 -127 - 127 -127 - 127 v1.1 9/24/2009 Page ...

Page 5

... Axis Accelerometer module. All the features of the MMA7455L accelerometer are covered in full detail in the Freescale Semiconductor MMA7455L device datasheet. Example test code as well as more advanced code demonstrations of this device for the Propeller and Basic Stamp can be found on the 28526 product page at www.parallax.com. ...

Page 6

... Continue reading data from any other desired axes (YOUT8, or ZOUT8). operation can be performed in a continuous loop in software, or intermittently when required by the application. Module Dimensions See PDF attached. Copyright © Parallax Inc. MMA7455 3-Axis Accelerometer Module (#28526 communication protocol to For This v1.1 9/24/2009 Page ...

Page 7

... ANGLE TOLERANCES: X ± 10° X.X ± 5° .050 1.27 Accelerometer position on circuit board. 599 MENLO DRIVE www.PARALLAX.com ROCKLIN, CA 95765 (916) 624-8333 TITLE MMA7455 3-Axis Accelerometer SCALE: 3:1 DRAWN BY K. McCullough .100 2.54 .250 6.35 DATE 20090813 Part # 28526 REV A Parent Part # --- SHEET ...

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