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TM 2
• Freescale Sensors Overview
• Freescale Sensor Portfolio
• Sensor Fusion
• Enablement Tools
• Back Up: Deep Dive
• [email protected]; 480-413-5857
3 TM
• Proliferation of connected intelligence
• Safe intelligent automation
• Energy efficiency
• Contextual awareness and intuitive human interface
4 TM
• Knowledge about the body’s movement and bio-status
• Our interaction with tools, devices/machines and objects
• Enable machines to work autonomously.
• Knowledge about, and interaction with the surrounding environment
The
Machine
The
Environment
The Person
Motion, reaction
Posture, gait, cadence
Biometrics
Emotion
Position
Motion, Velocity, Trajectory
Impact, Power
Location, Altitude
Temperature, Humidity
Light and Sound
5 TM
Today + …
Vibration monitoring moving
from advanced predictive
maintenance to eventually
active compensation
Security
• Intrusion Detection
• Perimeter Access Control
Asset Tracking
• Quality of shipments
Smart Cities
• Parking
• Structural Health
• Earthquake detection
Smart Farms
•Animal Care/Tracking
• Washing machines
• Dishwasher
• Coffee Maker / Beverage Dispenser
• Rice Cookers
• Fluid Level
• Pressure Switch
• Heating, Ventilation and Air Conditioning
• Pump controls
• Industrial controls
• Smart meters
Appliances
General Industrial
6 TM
- Today + …
- Activity/Fitness Monitors
- Wound management
- Movements of patients
undergoing physical
rehabilitation
- Feedback loops for
improved performance of
prosthetic devices
- Elderly/patient monitoring
- Sportsman care
• Blood Pressure – cuff
• Blood Pressure – invasive
• Respiratory – inhalers, ventilators
• CPAP – Sleep Apnea
• Pulmonary Embolism
• Hospital Beds
• Nebulizers
Instrumentation
Therapy
• Activity / Gate Analysis
• Heart rate
• Sleep quality
Diagnostics
7 TM
Airbag ECU
(Inertial)
Inertial & Pressure Side
Crash Satellite
Tire Pressure
Monitoring
System
Engine Control
(Pressure) Suspension
Control (Inertial)
Vehicle Stability
(Inertial)
Electric Parking Brake
(Inertial)
Radar
(77 GHz)
-Today + …
-Mandates on tire pressure
monitoring and vehicle
dynamics continue to drive
sensor growth beyond
semiconductor market
-Navigation - GPS Assist
-High Pressure applications
expanding
-Magnetics for Motor Control
9 TM
Product Longevity
Program
Energy-Efficient
Solutions Program
SafeAssureTM
Functional Safety Program
Functional Safety
Simplified
The Freescale SafeAssure
functional safety program is
designed to help simplify
the process of achieving
system compliance with
functional safety standards
in the automotive and
industrial markets
Energy Efficient
by Design
The Energy-Efficient
Solutions mark highlights
selected products that excel
in effective implementation
of energy-efficient
technologies
Supply
Assurance
For the automotive and
medical segments, a broad
range of products are
made available for a
minimum period of 15
years and 10 years for
other market segments.
13 TM
• Freescale's acceleration sensors detect changes in force
resulting from tilt, motion, positioning, shock, and vibration.
• Capable of single, dual, or triple axis sensing capability with
range from 1.5g to 250g
• An accelerometer measures linear acceleration plus gravity
− An accelerometer by itself is a “3 axis” system
− When any axis is vertical, we cannot detect rotation about that axis
+Y
+X
+Z
Accelerometer
14 TM
When horizontal, and at rest:
X = 0
Y = 0
Z = 1g
When horizontal, and
accelerating at 1g in the direction
of the arrow:
X = 1g
Y = 0
Z = 1g
15 TM
Sample Prod SRP$ Applications
MMA8451/52/53 3-axis ±2, ±4, ±8 g 10/12/14-bit Digital I2C
• Embedded function and interrupt : (FIFO, High pass filter, P/L,…)
• Ultra low noise (99 µg/√Hz), low TCO (0.15mg/°C)
• High performance Consumer & Industrial
• Down to 0.25mg/LSB sensitivity
• 1.95...3.6 Volt, 3 x 3 x 1 mm QFN
Web ok 0.86
0.68
Tilt Measurement
Pedometer
Power Management
eCompass
Asset Tracking
Activity Monitor
DECT Phones
Sports Watch
Fleet Management
Remote Controls
Appliance
FXLS8471 3-axis ±2, ±4, ±8 g 14-bit Digital SPI Now Nov-13 TBD
• Embedded functions and interrupts ( all + Vector magnitude)
• High performance industrial grade
• 1.95...3.6 Volt, 3 x 3 x 1 mm QFN
MMA8652/53 3-axis ±2, ±4, ±8 g 10/12-bit Digital I2C Web Now 0.53
• Embedded functions and interrupts (8652 same than MMA8451)
• Software compatible with the MMA845x family
• Low cost
• 1.95...3.6 Volt, 2 x 2 mm DFN
MMA8491 3-axis Tilt Sensor 14-bit Digital I2C + 3 Logic Out Now Now 0.77 Ball-in-a-Box
Tamper Sensor
Alarm/Security
Freefall Detect
Remote Control
Low Power Wake-up
• Ultra low power down to 400 nA/hz,
• 3 logic outputs to flag tilt on the 3 axis
• I²C interface to read raw acceleration data
• 1.95...3.6 Volt, 3 x 3 x 1 mm DFN
Drivers Available on request
16 TM
Sample Prod SRP$ Applications
FXLN8361 3-axis ±2/±8 g Analog Out, low bandwidth Now Nov-13 1.03 -Vibration Monitoring
-High Precision
-Industrial Control
-Sport Applications
-Preventive
Maintenance
FXLN8362 3-axis ±8/±16 g Analog Out, low bandwidth Now Nov-13 1.03
FXLN8371 3-axis ±2/±8 g Analog Out, high bandwidth Now Nov-13 1.03
FXLN8372 3-axis ±8/±16 g Analog Out, high bandwidth Now Nov-13 1.03
• High Bandwidth: up to 4.9 kHz on XY and 2.1 kHz on Z axis
• Low Bandwidth : up to 1.7 kHz on XYZ axis
• Low power 200 µA in running mode, low voltage
• High performance industrial grade
• 1.7...3.6 Volt, 3 x 3 x 1mm, 0.65mm pitch 12 pins QFN
MMA6900Q 2-axis XY, ±3.5g, 11 bits, SPI, AECQ100 Now Now 4.77 -Vehicle stability
control
-Electronic parking
brake
-Car alarm
- Trailer tilt control
-Absolute tilt
measurement
- Noisy environment
MMA6901Q 2-axis XY, ±5g, 11 bits, SPI, AECQ100
• AECQ100 qualified, -40°C;+105°C
• Low pass filters for noisy environment
• Low TCO over the wide temperature window.
• QFN 6x6mm, 16 pins QFN
Drivers Available on request
17 TM
An Intelligent Sensor Hub manages:
• How to talk to each sensor
• How to configure each sensor
• How often to talk to each sensor
• When to listen to each sensor
• What data is pertinent to the application
• and much more….
Power
Management
Accelerometer
ColdFire V1
32-Bit Processor
Connectivity:
I2C/SPI
Device ID: 0xXX
Resolution: 16 bits
Turn on Time: xx
Sample Rate: xx
Interrupts to set: xx
Device ID: 0xXX
Resolution: 16 bits
Turn on Time: xx
Sample Rate: xx
Interrupts to set: xx
Device ID: 0xXX
Resolution: 16 bits
Turn on Time: xx
Sample Rate: xx
Interrupts to set: xx
Device ID: 0xXX
Resolution: 16 bits
Turn on Time: xx
Sample Rate: xx
Interrupts to set: xx
Resolution: 10-, 12-, 14-, and 16-bit
Turn on Time:
Sample Rate
Interrupts to set:
Firmware Version: xx
All Sensor Device IDs
ROM version
Hardware version
Date code for build
Build number
Pressure
(MPL3115)
Touch
(MPR121) Gyro
(FXAS21000)
Magnetic
(MAG3110)
Host
18 TM
The upcoming challenges from
the increasing number of
sensors:
• Each sensor requests its own
set of interface (I2C, SPI,
level shifter…), driver and
software (offset
compensation, specific
setting…)
• Increasing data flow to be
processed by the Apps
processor
• Power budget management
and optimization
• Higher software complexity
to manage and adapt to each
sensor
Mag
Pressure
Applications
Processor
Driver
Driver
Driver
Accel
Pressure Touch
Sensor
Hub
Magnetic
Applications Processor
Sensor hub architecture
MEMS accelerometer
Processing
Software
19 TM
Sample Prod SRP$ Applications
MMA955xL 32-Bit 16K Flash CPU and 3-axis Accelerometer Tilt Measurement
Vibration Monitor
Pedometer
Home Health
Power Management
eCompass
Asset Tracking
Collision Recorder
FXLC95000CL 32-Bit 128K Flash CPU and 3-axis Accelerometer
• Embedded ±2, ±4, ±8 g 3-axis 16-Bit accelerometer module
• 32-Bit CF V1 CPU with MAC multiply and accumulate block
• 16K or 128K on-chip Flash, 2K or 16K on-chip SRAM
• SPI, I²C (master and slave), GPIO, ADC, PWM
• 1.8V , 3 x 3 x 1 mm QFN, or 3 x 5 x 1 mm QFN
• Pre-flashed Freescale firmware (3 Versions) or MQX
• CodeWarrior CW10.x supported
Part Number Firmware User Memory Size
starting
at
1.79
MMA9559L Basic 14K Flash 1.5K SRAM Now Now
MMA9550L Infrastructure 6.5K Flash 0.5K SRAM Now Now
MMA9551L Infrastructure and Gesture 4.5K Flash 0.5K SRAM Now Now
MMA9553L High end pedometer 1.5K Flash 0.2K SRAM Now Now
FXLC95000 MQX enabled 128K Flash 16K SRAM Now Sep-13 3-Axis MEMS
Accelerometer
ROM ColdFire
32-Bit
V1 Core
SPI
I2C
Flash
RAM
ADC
GPIO
Demo
20 TM
Differentiating Points
− System in Package: 32-bit MCU and 3-axis accelerometer
− Open MCU architecture enables differentiated creativity
− First open programming model with library support
− Compute and actuate locally
− Sensor hub manages multiple sensors: FSL & others
− Pass through data as needed i.e. heading
− Best in class accelerometer noise & resolution performance
Product Features
− 16 bit accelerometer resolution
− 128K Flash, 16K RAM
− 4MHz SPI capability
− Autonomous master/slave functionality
− 1.72 to 3.6V I/O supply voltage
− +/-2g, 4g, 8g configurable dynamic ranges available
Typical Applications
− Sports Monitoring
− Motion enabled accessories
− Tracking Devices
− Controllers: Remotes, Games
3-axis accelerometer plus Coldfire MCU that enables scalable, autonomous, high precision multi-
sensor hub solutions with local compute and sensors management in an open architecture
21 TM
• Magnetometer: An instrument for measuring the magnitude
and direction of a magnetic field
• A 3-axis magnetometer gives you the X/Y/Z components of the
magnetic field
22 TM
• MEMS gyroscopes are used for measuring angular rate
+Y
+X
+Z
ωz
ωx
ωy
Earth rotation: 0.004o/s
23 TM
rc VmF 2
dc VmF
2
A fictional force on a moving object when
observed on a rotating frame. The Coriolis force
scales with the angular velocity of the frame.
Angular rate (), drive motion (Vd) and Coriolis
force (Fc) are always located on there axes
orthogonal to each other.
This is where the confusion might begin. We
called XY gyro with the sensing direction is in Z-
axis while Z gyro with sensing direction in XY
direction ….
Input angular
rate ()
Coriolis
Force
Drive
Motion
Input
Rotation
Drive
Velocity
Coriolis
Force
Coriolis Force
X (Fc)
Z ()
Y (Vd)
Coriolis force causes
spiral motion in
Hurricanes
24 TM
Sample Prod SRP$ Applications
MAG3110G 3-axis Digital Magnetometer Web Now 0.56 Industrial Compass
Current Sensing
Presence Detection
Car Detect
Industrial Safety
Magnetic Tamper
Sports Watch
Diving Watch
Capable of measuring geomagnetic fields
• Wide dynamic range +/- 1000 μT (10 Gauss)
• Low power in measurement mode 8.6 μA .
• ODR Output data rate up to 80 Hz
• Interrupt pin trigger when new data available
• Tilt compensation and Soft/Hard Iron calibration SW available
• 1.95...3.6 Volt, 2 x 2 x 0.85 mm DFN
FXOS8700CQ COMBO 6-axis Magnetometer and
Accelerometer Now Now 1.25
• Capable of measuring
geomagnetic fields with
Tilt compensation
• Wider dynamic range +/- 1200 μT
• ODR up to 800 Hz by sensors, or 400Hz in Hybrid mode
• Embedded interrupts and pre-programmed functions
• Low power 80 μA in Hybrid mode @ 25 Hz
• 1.95...3.6 Volt, 3 x 3 x 1.2 mm QFN
FXAS21000 3-axis Digital Gyroscope Jul-13 Oct-13 2.09 Inertial Navigation
Gaming
Remote Control
Smart Phones
• Full scale range +/-1600°/sec
• Angular speed resolution better than 0.2°/sec
• Current consumption in run mode : 5.5mA
• 1.95V-3.6V voltage supply, 4 x 4 x 1 mm QFN
+ = 2 x 2 mm 3 x 3 mm 3 x 3 mm
25 TM
• Differentiating Points
− Angular acceleration resolution better than 0.2°/s
− Programmable interrupts
− Power saving features
• Product Features
− 1.95-3.6V supply voltage
− Output data rates (ODR) from 1Hz to 200Hz
− Full scale range: ±1600°/s
− Bias stability over temperature: ±0.3°/s
− Random walk(over 1minute): ±0.007°/s
• Typical Applications
− Controllers: Remotes, Games
− Mobile: Phones, Tablets, eReaders
− Sports Monitoring
− Real-time orientation detection
− Static orientation detection
Package 4x4x1mm QFN, 0.5mm pitch
Availability Samples: NOW (On Request)
Production: October 2013
26 TM
Sensor Strengths Weaknesses
Accelerometer • Inexpensive
• Extremely low power
• Very linear
• Very low noise
• Measures the sum of gravity and
acceleration. We need them
separate.
Magnetometer • The only sensor that can orient
itself with regard to “North”
• Insensitive to linear acceleration
• Subject to magnetic interference
• Not “spatially constant”
Gyro • Relatively independent of linear
acceleration
• Can be used to “gyro-compensate”
the magnetometer
• Power hog
• Long startup time
• Zero rate offset drifts over time
Pressure Sensor • The only stand-alone sensor that
can give an indication of altitude
• Not well understood
• A “relative” measurement
• Subject to many interferences and
environmental factors
27 TM
Differential
Gauge
Absolute
Differential – Measures differences
between two pressure points (P1 and P2)
Special type of differential measurement.
One side exposed to Atmosphere (P2 =
Atmosphere Pressure)
Only one side is accessible. Internal (P2) is
referenced to vacuum or sealed air inside.
For All: P1>P2 for positive voltage output
P2 = ATM
P1
P2
P1
Constraint Waver
Reference
P1
28 TM
Altitude = K1 X (1 - (P/P0)K2)
• K1 = 44330.77 meters
• K2 = 0.190263 (unit-less)
• P0 = 101325 Pascals
29 TM
Sample Prod SRP$ Applications
MPXHZ9 Series 15...400 kPa Digital Absolute Pressure Sensor Fuel Injection
Comfort Seating
LPG Gas Market • 1.5% max error over 0° to 85°C
• 5 V power supply
• Media resistant gel
• AECQ100 qualified
• Drop in replacment of the MPXHZ6xxx series
MPXHZ9115A6T1 15...115 kPa No port Now Q1-14
MPXHZ9115AC6T1 15...115 kPa Port Now Q2-14
MPXHZ9250A6T1 15...250 kPa No port Now Q1-14
MPXHZ9250AC6T1 15...250 kPa Port Now Q2-14
MPXHZ9400A6T1 15...400 kPa No Port Now Q1-14
MPXHZ9400AC6T1 15...400 kPa Port Now Q2-14
MPY8600DK6T1 Tire pressure monitoring system 100-900kpa
• S08, 8 Bit MCU , 16k Flash, 512 b Ram
• RF transmitter PLL-based 315/434 MHz, ASK/FSK, Manchester
MPL3115A 20...115 kPa Digital Absolute Pressure Sensor Web Now 1.43 Altimeter
Sport Watch
Medical Monitoring
Breath Analyzer
Air Conditioning
• Compensated sensor
• Direct readings in Pressure, Altitude and Temperature
• Typical 25 cm altimeter resolution
• Embedded software providing real data
• Embedded interrupts and pre-programmed functions
• 3 x 5 x 1 mm LGA package
30 TM
Temperature Compensated
Integrated temperature compensation
Need external circuit for amplification
Uncompensated
High sensivity analog output
Need external circuit for compensation and amplification
Integrated Pressure Sensor
Integrated signal conditioning for temperature
compensation, linearization and amplification
MPX10/12/53 D G
10...53 kPa
SOP, Unibody
MPX2 Series A D G V
10...300 kPa
ChipPak, Unibody
MPX7 Series D G
±2...±25 kPa
SOP
MPX4 Series A D G
6...250 kPa
SOP, SSOP, Unibody
MPX5 Series A D G V
4...1’000 kPa
SOP, SSOP, Unibody
MPX6 Series A
100...400 kPa
SOP, SSOP
MPL115 (Digital I2C) A
115 kPa Smart Baro/Pressure
3 x 5 mm LGA
A – Absolute
D – Differential
G – Gauge
V – Vacuum
Package Examples
SOP
Side
Port
SOP
Axial
Port
Unibody
Dual
Port
SSOP
Basic
Case
SOP
Basic
Case
Medical
ChipPak
Case
LGA
3 x 5 mm
Case
31 TM
20
234
100
1437.5
151.2
662.5 1100
9500 14500
1
10
100
1000
10000
100000
12.5Hz LP Acc only
400Hz LP Acc
12.5Hz Mag
400Hz Mag Pedometer Pressure (1Hz)
Hybrid Mag + Accel (200Hz)
Gyro Standby
Gyro RUN
Po
wer
in
W
Typical Sensor Power in W
Notice this is a log scale…
32 TM
Sensor Strengths Weaknesses
Accelerometer • Inexpensive
• Extremely low power
• Very linear
• Very low noise
• Measures the sum of gravity and
acceleration. We need them
separate.
Magnetometer • The only sensor that can orient
itself with regard to “North”
• Insensitive to linear acceleration
• Subject to magnetic interference
• Not “spatially constant”
Gyro • Relatively independent of linear
acceleration
• Can be used to “gyro-compensate”
the magnetometer
• Power hog
• Long startup time
• Zero rate offset drifts over time
Pressure Sensor • The only stand-alone sensor that
can give an indication of altitude
• Not well understood
• A “relative” measurement
• Subject to many interferences and
environmental factors
34 TM
Accelerometer plus magnetometer can provide device orientation and magnetic heading. A
magnetometer can also be used as a “virtual” gyro in certain situations (magnetically clean and stable
environment).
Major weakness of this sensor pair is its sensitivity to linear acceleration, which leads to errors in both
orientation and heading.
Accelerometer + Gyroscopes Fused Data Accelerometer can help stabilize the drift in the gyroscope output data
Rotation and linear acceleration can be separated
Major weakness of this pair is the lack of an absolute heading reference
Accelerometer + Gyroscope + Magnetometer Fused Data This combination of sensors can overcome the inherent limitations of each of the previous
sensor pairings as their error sources (deficiencies) complement each other.
This combination of sensors further improves on the previous pair with the addition of
elevation. This is essential for use within buildings to sense the floor you are on. The
pressure sensor can also be used to enable weather prediction.
Accelerometer + Gyroscope + Magnetometer + Pressure Fused Data
Accelerometer + Magnetometer Fused Data
35 TM
3-Axis Acc
3-Axis
Mag
3-Axis
Gyro
Trim
Trim & Hard/Soft
compensation
Trim
hi/low/band
pass filtering
Kalman
Filter or
similar
function
Geometric
computations
Rotation matrix
Inclination (φ, Θ, Ψ)
hi/low/band
pass filtering
hi/low/band
pass filtering
Shake detection
Calculate
hard/soft iron
parameters
Acc x,y,z
ω x,y,z
B x,y,z
shake event
Tilt-compensated mag
heading
Quaternion
Sensor Fusion
Raw data calibration
parameters
FoR
mapping
FoR
mapping
FoR
mapping
FoR = Frame of Reference Mapping
Pressure Trim hi/low/band
pass filtering Pressure
Sensor Hub Functions
Configure, Power State, Data Control
36 TM
Tilt compensated eCompass with best in class hard and soft iron calibration
• Available in 3 versions:
1. Hard iron only
2. Hard iron and on-diagonal soft iron scale terms
3. Full hard and soft iron calibration
(1) and (2) are available in source form via click through licenses at the URL below. (3) is available under NDA
• Freescale Xtrinsic e-compass sensor fusion software has been awarded Product of the Year by Electronic Products Magazine
• http://www.freescale.com/eCompass
Demo
37 TM
• Xtrinsic sensor fusion in tablets, slates,
convertible/non-convertible laptops and
other portable devices
• Won the China Annual Creativity in
Electronics (ACE) Sensor/Analog Signal
Conditioning Product of the Year for 2013
• HID/USB Reference design includes both
hardware and software components
required to easily add sensor fusion
capabilities to existing designs
• http://www.freescale.com/windows8
38 TM
• Educational variant of tool
used internally for
algorithm checkout.
• Experiment with various
fusion techniques using the
sensors already in your
Android device
• Available today on Google
Play. Search for “Sensor
Fusion”.
Demo
39 TM
• Differentiating Points
− Industry’s First open Intelligent Motion Platform Framework
− Sensor hub capability
− Power management features enabling low power modes
• Product Features
− Provides a single unified interface for sensor data regardless of sensor types
− Enables developer to concentrate on using sensor data, not getting sensor data.
− Eliminates intensive sensor integration effort.
− Provides power management of the platform to achieve lowest power mode of operation
• Typical Applications
− Mobile: Phones, Tablets, eReaders
− Controllers: Remotes, Game
− Sports Monitoring Performance Monitoring
− Augmented Reality
Available Now
Intelligent Sensing
Framework
Xtrinsic Intelligent Sensing Framework
Sensor Manager
MQX RTOS
Power
Manager
Device
Messaging
Command Interpreter
Sensor
Adapter
Host
Proxy
Hardware
Intelligent Sensor Hardware
ISF Abstraction
Interfaces
ISF Bus Protocol
Extensions
Embedded ApplicationEmbedded Application
Embedded Applications
Pub/Sub
Event-based
Sensor Data
Sensor Abstraction Interface
Internal
Sensor
Adapter Bus
Manager
Host
Processor
Registered
Callbacks - OR -
Sensor Data
Updates
Sensor
Configuration
I/O Buffers
Simplified
Pwr Mgmt
APIs
Sensor
Adapter
ISF Sensor
Extensions
Customer
Developed
Other Freescale
SW
Protocol DriverProtocol Driver
I2C
Protocol Driver
External
Sensor
External
Sensor
External
Sensor
LEGEND:
INT_OUT
ISF Components
41 TM
Xtrinsic Sensing Development Tools
Sensors EVKS
Tower and Sensors Part Number Description
KITSTARTER2EVM Sensor Tool box starter kit to support
Acceleratometer, Presure and touch
sensing MMA8451/2/3Q, MPL115A1,
MPR121
KITSTBLITE2EVM Sensor Tool Box kit 2 (demo boards
only)
KITSTARTER1EVM Sensor Toolbox Starter Kit 1
RDMMA865x Sensor Toolbox Bundle for MMA865xFC
Accelerometer
LFSTBPROTO Prototyping board
KITMPR03xEVM MPR03xEVM Development Kit
KITMPR121EVM MPR121EVM Development Kit
Part Number Description
RD4247FXOS8700 FXOS8700 6-Axis Development Board
RD4247MAG3110 MAG3110 Development Board
KITFXLC95000EVM FXLC95000 Development Board
KITMMA9550LEVM MMA955xL Smart Sensing Platform
DEMOSTBMPL3115A2 MPL3115A2 Development Kit
B- Bluetooth
C- Combo
D- Discrete
H-HUB
42 TM
community.freescale.com/community/sensors
• Forum for customers and Freescale experts to exchange
technical information about Freescale solutions
− In this vibrant, best-in-class environment, you can share sensor design
ideas and tips, ask and answer technical questions, and receive input on
just about any sensor design topic.
− Technical support with fellow design engineers and Freescale experts
43 TM
Sensors
• www.freescale.com/sensors
• www.freescale.com/sensingplatform
• www.freescale.com/sensordata
• www.freescale.com/mems
Sensor Products
• www.freescale.com/xyz
• www.freescale.com/magnetic
• www.freescale.com/pressure
• www.freescale.com/gyro (in Q4’13)
• http://www.freescale.com/sensortoolbox
Blogs: Smart Sensors
• http://blogs.freescale.com/2011/06/06/location-based-services-sensors-go-beyond-the-navigation/?tid=NL_2311
• http://blogs.freescale.com/author/michaelestanley/
• What in the world is contextual sensing?
• Evolving intelligence with sensors
• Magnetic sensor makes electronic compass design easy