Freescale Semiconductor Demo Board for MMA8491Q Xtrinsic 3-Axis Accelerometer DEMOMMA8491 DEMOMMA8491 数据表
产品代码
DEMOMMA8491
Freescale Semiconductor
Document Number: MMA8491Q
Data Sheet: Technical Data
Rev 2.0, 11/2012
© 2012 Freescale Semiconductor, Inc. All rights reserved.
Xtrinsic MMA8491Q 3-Axis
Multifunction Digital Accelerometer
Multifunction Digital Accelerometer
The MMA8491Q is a low voltage, 3-axis low-g accelerometer housed in a
3 mm x 3 mm QFN package. The device can accommodate two
accelerometer configurations, acting as either a 45° tilt sensor or a digital
output accelerometer with I
3 mm x 3 mm QFN package. The device can accommodate two
accelerometer configurations, acting as either a 45° tilt sensor or a digital
output accelerometer with I
2
C bus.
•
As a 45° Tilt Sensor, the MMA8491Q device offers extreme ease of
implementation by using a single line output per axis.
implementation by using a single line output per axis.
•
As a digital output accelerometer, the 14-bit ±8g accelerometer data can
be read from the device with a 1 mg/LSB sensitivity.
be read from the device with a 1 mg/LSB sensitivity.
The extreme low power capabilities of the MMA8491Q will reduce the low data
rate current consumption to less than 400 nA per Hz.
rate current consumption to less than 400 nA per Hz.
Features
•
Extreme low power, 400 nA per Hz
•
Ultra-fast data output time, ~700
μs
•
1.95V to 3.6V V
DD
supply range
•
3 mm x 3 mm, 0.65 mm pitch with visual solder joint inspection
•
±8g full-scale range
•
14-bit digital output, 1 mg/LSB sensitivity
•
Output Data Rate (ODR), implementation based from < 1 Hz to 800 Hz
•
I
2
C digital interface
•
3-axis, 45° tilt outputs
Typical Applications
•
Smart grid: tamper detect
•
Anti-theft
•
White goods tilt
•
Remote controls
Related Documentation
The MMA8491Q device features and operations are described in a variety of
reference manuals, user guides, and application notes. To find the most-
current versions of these documents:
reference manuals, user guides, and application notes. To find the most-
current versions of these documents:
1.
Go to the Freescale homepage at:
http://www.freescale.com/
2.
In the Keyword search box at the top of the page, enter the device number MMA8491Q. In the Refine Your Result pane
on the left, click on the Documentation link.
on the left, click on the Documentation link.
ORDERING INFORMATION
Part Number
Temperature Range
Package
Shipping
MMA8491QT
-40 to +85°C
QFN 12
Tray
MMA8491QR1
-40 to +85°C
QFN 12
1000 pc / Tape & Reel
Pin Connections
MMA8491Q
Bottom View
12-Lead Industrial QFN
3 mm x 3 mm x 1.05 mm
0.65 mm Pitch
1
2
3
4
10
9
8
7
Xout
Yout
Zout
Gnd
Byp
V
DD
SDA
EN
5
6
12
11
SCL
Gnd
NC
NC