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Description: The MMA8452Q is a smart low-power, three-axis, capacitive MEMS accelerometer with 12 bits of resolution. This accelerometer is packed with embedded functions with flexible user programmable options, configurable to two interrupt pins. Embedded interrupt functions allow for overall power savings relieving the host processor from continuously polling data.

The MMA8452Q has user selectable full scales of ±2g/±4g/±8g with high pass filtered data as well as non filtered data available real-time. The device can be configured to generate inertial wakeup interrupt signals from any combination of the configurable embedded functions allowing the MMA8452Q to monitor events and remain in a low power mode during periods of inactivity.

Check out the related items below for our MMA8452Q Breakout Board!

Dimensions: 3 x 3 x 1 mm (QFN)

Features:

  • 1.95 V to 3.6 V supply voltage
  • 1.6 V to 3.6 V interface voltage
  • ±2g/±4g/±8g dynamically selectable full-scale
  • Output Data Rates (ODR) from 1.56 Hz to 800 Hz
  • 12-bit and 8-bit digital output
  • I2C digital output interface (operates to 2.25 MHz with 4.7 kΩ pullup)
  • Two programmable interrupt pins for six interrupt sources
  • Three embedded channels of motion detection
  • Orientation (Portrait/Landscape) detection with set hysteresis
  • High Pass Filter Data available real-time
  • Current Consumption: 6 μA – 165 μA

Documents:

Comments 19 comments

  • I have a (untested) breakout board for this. Email me for eagle files, etc…

  • A product i suggested has been stocked!

  • Standard Question: Is there a breakout board planned for this part? and will this be replacing the MMA7361 you currently stock?

    • breakout board is in the works. I’m not sure about the MMA7361, I can’t remember if this is a direct replacement, or just another model. If anyone knows if the MMA7361 is EOL’d, let me know.

      • When will the breakout board be available? I made a breakout board by myself (very proud!) but it looks kind of crispy and I’m not sure if it works…

        • No idea really. It depends on how it goes in production and such. You never know until you go through and design it if it will work or not.

  • I’m trying to gather data from four different accelerometers and use them to play back sound. So far works great using the MP3 Player shield and one accelerometer, but no idea how to gather data from all four. I can jump the SA0 pin and do it that way, but that only get me 2 accelerometers and not four. They essentially work in groups of two. 2 for arms, 2 for legs. I just wanted to register when the legs move or arms move(not which one). Is there any way to combine the results from 2 accelerometers with the same address?

    • http://dsscircuits.com/i2c-multiplexer.html split your i2c bus. Either that or use a Microcontroller with two busses like an arduino Due or a beagleboard

  • I adapted the I2C library used in the example code to work with the new Arduino Leonardo which uses an ATMEGA32U4 instead of an ATMEGA328.

    I’ve uploaded the changed i2c.h file to a bitbucket repository in case anyone else is interested in that: https://bitbucket.org/wizard23/arduinoleonardolibraries/src/39d52819baae/i2c.h

    If you just replace the i2c.h from the above Example Code then it should work on the arduino Leonardo (or any other ATMEGA32U4 board)

    The only thing I had to change was the definitions of WRITE_sda and READ_sda because that pin is on a different port on the ATMEGA32U4.

    I used the sensor in my own design (thanks sparkfun for the eagle library (although I had to adapt it because the NC pins are not connected to the package and according to Freescale Application Note AN4077 you should connect dummy traces to the NC pins…)) and now I can already read the sensor values :)…thanks again to sparkfun for this awesome code example!

  • I am trying to increase the output data rate to 800Hz for this sensor but it doesn’t seem to go beyond 10Hz. I have a logic analyzer connected to the interrupt pins to measure the interrupt generation rate. I am using the example code provided above, any ideas as to what could be going wrong or any similar experiences with this device?

  • I should have noticed the picture scaling this against a quarter. My GOD this thing is tiny! Just to get it connected I’m going to have to place it on a board with well under half a mm in accuracy in any given direction. I think I’ll wait on that for a couple years ‘till I think I’m competent enough to hotplate solder surface mount components. I think if you value your sanity you should wait for a breakout board.

  • Can this package be soldered using gel flux, extended pads and drag soldering?

  • Just a note to Arduino users, Freescale’s MMA845x series accelerometers won’t work with the Wire library because these devices require the use of a repeated start.


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