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PDF MMA8653FC Data sheet ( Hoja de datos )
| Número de pieza | MMA8653FC | |
| Descripción | 10-bit Digital Accelerometer | |
| Fabricantes | Freescale Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MMA8653FC (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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Freescale Semiconductor
Data Sheet: Product Preview
Document Number: MMA8653FC
Rev. 0, 08/2012
Xtrinsic MMA8653FC 3-Axis, 10-bit
Digital Accelerometer
MMA8653FC
The MMA8653FC is an intelligent, low-power, three-axis, capacitive
micromachined accelerometer with 10 bits of resolution. This accelerometer is
packed with embedded functions with flexible user programmable options,
configurable to two interrupt pins. Embedded interrupt functions enable overall
power savings, by relieving the host processor from continuously polling data.
There is access to either low-pass or high-pass filtered data, which minimizes the
data analysis required for jolt detection and faster transitions. The device can be
configured to generate inertial wake-up interrupt signals from any combination of
the configurable embedded functions, enabling the MMA8653FC to monitor
inertial events and to remain in a low-power mode during periods of inactivity. The
MMA8653FC is available in a small 10-pin DFN package (2 mm x 2 mm x 1 mm).
Top and Bottom View
Features
• 1.95V to 3.6V supply voltage
• 1.62V to 3.6V digital interface voltage
• ±2g, ±4g, and ±8g dynamically selectable full-scale ranges
• Output Data Rates (ODR) from 1.56 Hz to 800 Hz
• 10-bit digital output
• I2C digital output interface with programmable interrupts
• One embedded channel of configurable motion detection (Freefall)
• Orientation (Portrait/Landscape) detection with default hysteresis
• Automatic ODR change triggered by the Auto-Wake / Sleep statewww.DataSheet.net/ change
• Self-Test
10-PIN DFN
2 mm x 2 mm x 1 mm
CASE 2162
VDD 1
Top View
MMA8653FC
10 SDA
SCL 2
9 GND
INT1 3 MMA8653FC 8 VDDIO
BYP 4
7 GND
Typical Applications
INT2 5
6 GND
• eCompass applications tilt compensation
• Static orientation detection (Portrait/Landscape, Up/Down, Left/Right, Back/
Front position identification)
Pin Connections
• Notebook, eReader, and Laptop Tumble and Freefall Detection
• Real-time orientation detection (virtual reality and gaming 3D user position
feedback)
• Real-time activity analysis (pedometer step counting, freefall drop detection for HDD, dead-reckoning GPS backup)
• Motion detection for portable product power saving (Auto-SLEEP and Auto-WAKE for cell phone, PDA, GPS, gaming)
• Shock and vibration monitoring (mechatronic compensation, shipping and warranty usage logging)
• User interface (menu scrolling by orientation change)
Part Number
MMA8653FCR1
ORDERING INFORMATION
Temperature Range
Package Description
-40°C to +85°C
DFN-10
Shipping
Tape and Reel
This document contains information on a new product. Specifications and information herein
are subject to change without notice.
© 2012 Freescale Semiconductor, Inc. All rights reserved.
Datasheet pdf - http://www.DataSheet4U.co.kr/
1 page  
1.2 Pin descriptions
Z
X1
Y
(Top View)
Direction of the
Detectable Accelerations
SDA 10
GND
VDDIO
GND
GND 6
1 VDD
SCL
INT1
BYP
5 INT2
(Bottom View)
Figure 2. Direction of the detectable accelerations
1.3 Orientation definitions
Figure 3 shows the device configuration in the 6 different orientation modes. There are several registers to configure the
orientation detection and are described in detail in the register setting section.
Pin 1
LL
Xout @ -1g
Yout @ 0g
Zout @ 0g
Top View
PU
Earth Gravity
X @ 0g
Y @ -1g
Z @ 0g
LR
www.DataSheet.net/
PD
Xout @ 1g
Yout @ 0g
Zout @ 0g
Xout @ 0g
Yout @ 1g
Zout @ 0g
Figure 3. Landscape/Portrait orientation
Side View
BACK
Xout @ 0g
Yout @ 0g
Zout @ -1g
FRONT
Xout @ 0g
Yout @ 0g
Zout @ 1g
PU = Portrait Up
LR = Landscape Right
PD = Portrait Down
LL = Landscape Left
Sensors
Freescale Semiconductor, Inc.
MMA8653FC
5
Datasheet pdf - http://www.DataSheet4U.co.kr/
5 Page 
3 Terminology
3.1 Sensitivity
The sensitivity is represented in counts/g.
• In 2g mode, sensitivity = 256 counts/g.
• In 4g mode, sensitivity = 128 counts/g.
• In 8g mode, sensitivity = 64 counts/g.
3.2 Zero-g offset
Zero-g Offset (TyOff) describes the deviation of an actual output signal from the ideal output signal if the sensor is stationary. A
sensor stationary on a horizontal surface will measure 0g in X-axis and 0g in Y-axis, whereas the Z-axis will measure 1g. The
output is ideally in the middle of the dynamic range of the sensor (content of OUT Registers 0x00, data expressed as a 2's
complement number). A deviation from ideal value in this case is called Zero-g offset.
Offset is to some extent a result of stress on the MEMS sensor, and therefore the offset can slightly change after mounting the
sensor onto a printed circuit board or after exposing it to extensive mechanical stress.
3.3 Self-Test
Self-Test can be used to verify the transducer and signal chain functionality without the need to apply external mechanical
stimulus.
When Self-Test is activated:
• An electrostatic actuation force is applied to the sensor, simulating a small acceleration. In this case, the sensor outputs will
exhibit a change in their DC levels which, are related to the selected full scale through the device sensitivity.
• The device output level is given by the algebraic sum of the signals produced by the acceleration acting on the sensor and by
the electrostatic test-force.
www.DataSheet.net/
Sensors
Freescale Semiconductor, Inc.
MMA8653FC
11
Datasheet pdf - http://www.DataSheet4U.co.kr/
11 Page | ||
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| PDF Descargar | [ Datasheet MMA8653FC.PDF ] | |
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