MMA6851BKW

MMA6851BKW Datasheet

Document Number MMA685x Rev 4, 12/2011

Part	Datasheet
MMA6851BKW	MMA6851BKW (pdf)

Related Parts	Information
MMA6851BKWR2	MMA6851BKWR2
MMA6853BKWR2	MMA6853BKWR2
MMA6855BKWR2	MMA6855BKWR2
MMA6853BKW	MMA6853BKW

PDF Datasheet Preview
Freescale Semiconductor Data Sheet Technical Data Single-Axis SPI Inertial Sensor MMA685x is a SPI-based, single-axis, medium-g, over-damped lateral accelerometer designed for use in automotive airbag systems. Features • ±20g to ±120g full-scale range • 3.3V or 5V single supply operation • SPI-compatible serial interface • 10-bit digital signed or unsigned SPI data output • Programmable arming functions • 12 low-pass filter options, ranging from 50 Hz to 1000 Hz • Optional offset cancellation with > 6s averaging period and < LSB/s slew rate • Pb-Free 16-Pin QFN-6 by 6 Package MMA685x Bottom View 16 LEAD QFN 6 mm by 6 mm CASE 2086-01 Top View VSSA N/C N/C VSSA ORDERING INFORMATION Device Axis Axis Range MMA6851BKW MMA6853BKW MMA6855BKW MMA6856BKW MMA6851BKWR2 MMA6853BKWR2 MMA6855BKWR2 MMA6856BKWR2 ±25g ±50g ±120g ±60g ±25g ±50g ±120g ±60g Shipping Tubes Tape & Reel Tape & Reel Tape & Reel Tape & Reel 16 15 14 13 VREGA 1 VSS 2 VREG 3 VSS 4 17 567 12 CS 11 MOSI 10 SCLK 9 VCC 8 N/C ARM/PCM TEST/VPP MISO Pin Connections 2010, 2011 Freescale Semiconductor, Inc. All rights reserved. Application Diagram VREG SCLK VREGA MOSI MISO MMA685x VSSA VSS VPP/TEST CS_A CS_D SCLK1 SCLK2 MOSI1 MOSI2 MISO1 MISO2 Main MCU 12/2011 • Updated ordering table to include Tube options deleted MMA6852 and MMA6854. • Deleted MMA6852 and MMA6854 devices from Electrical Characteristics table, lines 57 and Removed “QR2” from device names, lines • Updated equation in section Self-Test Interface. Sensors Freescale Semiconductor, Inc. MMA685x 51 How to Reach Us: Home Page: Web Support: USA/Europe or Locations Not Listed Freescale Semiconductor, Inc. Technical Information Center, EL516 2100 East Elliot Road Tempe, Arizona 85284 1-800-521-6274 or +1-480-768-2130 Europe, Middle East, and Africa Freescale Halbleiter Deutschland GmbH Technical Information Center Schatzbogen 7 81829 Muenchen, Germany +44 1296 380 456 English +46 8 52200080 English +49 89 92103 559 German +33 1 69 35 48 French Japan Freescale Semiconductor Japan Ltd. Headquarters ARCO Tower 15F 1-8-1, Shimo-Meguro, Meguro-ku, Tokyo 153-0064 Japan 0120 191014 or +81 3 5437 9125 Asia/Pacific Freescale Semiconductor China Ltd. Exchange Building 23F No. 118 Jianguo Road Chaoyang District Beijing 100022 China +86 10 5879 8000 For Literature Requests Only Freescale Semiconductor Literature Distribution Center 1-800-441-2447 or +1-303-675-2140 Fax +1-303-675-2150 Information in this document is provided solely to enable system and software implementers to use Freescale Semiconductor products. There are no express or implied copyright licenses granted hereunder to design or fabricate any integrated circuits or integrated circuits based on the information in this document. Freescale Semiconductor reserves the right to make changes without further notice to any products herein. Freescale Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Freescale Semiconductor assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters that may be provided in Freescale Semiconductor data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals”, must be validated for each customer application by customer’s technical experts. Freescale Semiconductor does not convey any license under its patent rights nor the rights of others. Freescale Semiconductor products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Freescale Semiconductor product could create a situation where personal injury or death may occur. Should Buyer purchase or use Freescale Semiconductor products for any such unintended or unauthorized application, Buyer shall indemnify and hold Freescale Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Freescale Semiconductor was negligent regarding the design or manufacture of the part. Freescale and the Freescale logo are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. Xtrinsic is a trademark of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. 2011 Freescale Semiconductor, Inc. All rights reserved. RoHS-compliant and/or Pb-free versions of Freescale products have the functionality and electrical characteristics of their non-RoHS-compliant and/or non-Pb-free counterparts. For further information, see or contact your Freescale sales representative. For information on Freescale’s Environmental Products program, go to

PDF Datasheet Preview

Freescale Semiconductor Data Sheet Technical Data

Single-Axis SPI Inertial Sensor

MMA685x is a SPI-based, single-axis, medium-g, over-damped lateral accelerometer designed for use in automotive airbag systems.

Features
• ±20g to ±120g full-scale range
• 3.3V or 5V single supply operation
• SPI-compatible serial interface
• 10-bit digital signed or unsigned SPI data output
• Programmable arming functions
• 12 low-pass filter options, ranging from 50 Hz to 1000 Hz
• Optional offset cancellation with > 6s averaging period and < LSB/s slew
rate
• Pb-Free 16-Pin QFN-6 by 6 Package

MMA685x

Bottom View
16 LEAD QFN 6 mm by 6 mm CASE 2086-01

Top View

VSSA N/C N/C VSSA
ORDERING INFORMATION

Device

Axis

Axis Range

MMA6851BKW MMA6853BKW MMA6855BKW MMA6856BKW MMA6851BKWR2 MMA6853BKWR2 MMA6855BKWR2 MMA6856BKWR2
±25g
±50g
±120g
±60g
±25g
±50g
±120g
±60g

Shipping

Tubes Tape & Reel Tape & Reel Tape & Reel Tape & Reel
16 15 14 13

VREGA 1 VSS 2

VREG 3 VSS 4
17 567
12 CS 11 MOSI 10 SCLK 9 VCC 8

N/C ARM/PCM TEST/VPP

MISO

Pin Connections
2010, 2011 Freescale Semiconductor, Inc. All rights reserved.

Application Diagram

VREG

SCLK

VREGA

MOSI

MISO

MMA685x

VSSA VSS VPP/TEST

CS_A

CS_D

SCLK1

SCLK2

MOSI1

MOSI2

MISO1

MISO2

Main MCU
12/2011
• Updated ordering table to include Tube options deleted MMA6852 and MMA6854.
• Deleted MMA6852 and MMA6854 devices from Electrical Characteristics table, lines 57 and

Removed “QR2” from device names, lines
• Updated equation in section Self-Test Interface.

Sensors Freescale Semiconductor, Inc.

MMA685x 51

How to Reach Us:

Home Page:

Web Support:

USA/Europe or Locations Not Listed Freescale Semiconductor, Inc. Technical Information Center, EL516 2100 East Elliot Road Tempe, Arizona 85284 1-800-521-6274 or +1-480-768-2130

Europe, Middle East, and Africa Freescale Halbleiter Deutschland GmbH Technical Information Center Schatzbogen 7 81829 Muenchen, Germany +44 1296 380 456 English +46 8 52200080 English +49 89 92103 559 German +33 1 69 35 48 French

Japan Freescale Semiconductor Japan Ltd. Headquarters ARCO Tower 15F 1-8-1, Shimo-Meguro, Meguro-ku, Tokyo 153-0064 Japan 0120 191014 or +81 3 5437 9125

Asia/Pacific Freescale Semiconductor China Ltd. Exchange Building 23F No. 118 Jianguo Road Chaoyang District Beijing 100022 China +86 10 5879 8000

For Literature Requests Only Freescale Semiconductor Literature Distribution Center 1-800-441-2447 or +1-303-675-2140 Fax +1-303-675-2150

Information in this document is provided solely to enable system and software implementers to use Freescale Semiconductor products. There are no express or implied copyright licenses granted hereunder to design or fabricate any integrated circuits or integrated circuits based on the information in this document.

Freescale Semiconductor reserves the right to make changes without further notice to any products herein. Freescale Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Freescale Semiconductor assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters that may be provided in Freescale Semiconductor data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals”, must be validated for each customer application by customer’s technical experts. Freescale Semiconductor does not convey any license under its patent rights nor the rights of others. Freescale Semiconductor products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Freescale Semiconductor product could create a situation where personal injury or death may occur. Should Buyer purchase or use Freescale Semiconductor products for any such unintended or unauthorized application, Buyer shall indemnify and hold Freescale Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Freescale Semiconductor was negligent regarding the design or manufacture of the part.

Freescale and the Freescale logo are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. Xtrinsic is a trademark of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners.
2011 Freescale Semiconductor, Inc. All rights reserved.

RoHS-compliant and/or Pb-free versions of Freescale products have the functionality and electrical characteristics of their non-RoHS-compliant and/or non-Pb-free counterparts. For further information, see or contact your Freescale sales representative.

For information on Freescale’s Environmental Products program, go to

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived MMA6851BKW Datasheet file may be downloaded here without warranties.

Datasheet ID: MMA6851BKW 635539