Transcript What Are Sensors - Freescale Semiconductor

Rapid Prototyping Solutions
Using Freescale Sensors with MQX
TM
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Module Objectives
►
In this session the participants will learn about the wide range of
Freescale Sensors, how they can be used, how they work, and
what the future holds for sensor integration
►
This session features the latest Freescale Tower System Sensor
Module, which showcases a low cost digital accelerometer, a
digital barometer and the latest 2nd generation touch sensor
►
Hands-on labs will enable participants to interact with these and
other sensors using the expandable capabilities of the Freescale
Tower System and MQX to incorporate sensor data with a web
server
►
Session participants will gain a better understanding of the
Freescale Sensor portfolio, the ongoing evolution of sensors
Freescale is pursuing and will be introduced to basic MQX
projects that will enable them to further explore sensor solutions
with the Freescale Sensor Tower System module
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the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
TM
2
Module Agenda
►
What are sensors
►
How sensors sense
►
Evolution of sensors
►
Hands-on demonstration
►
Hands-on sensor labs
►
Additional resources
►
Review and Q&A
Freescale™ and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are
the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
TM
3
Module Agenda
►
What are sensors
►
How sensors sense
►
Evolution of sensors
►
Hands-on demonstration
►
Hands-on sensor labs
►
Additional resources
►
Review and Q&A
Freescale™ and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are
the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
TM
4
What Are Sensors
►
A sensor is a device that detects either an absolute value
or a change in a physical or electrical quantity, and
converts that change into a useful input signal for a
decision making center
Sensor Input
Actuator
or
Output
Data Processing,
Control, and Connectivity
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TM
5
Sensor Applications
Acceleration
• Gesture detection
• Tilt to control
• Tap detection
• Position detection
• Orientation
Gyroscopic
Magnetic
Ambient light sensing
Temperature/humidity
Motion detection
Pressure
• Medical
• Barometer/altimeter
• Engine control/tire pressure
• HVAC applications
• Water level
Touch
• Touch detection
• Appliance control panels
• Touch panels
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the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
Multiple sensors working
together for next generation
applications…
TM
6
Shake Detection using the MMA7660FC
Shake Detection can be used for:
Clearing the screen
Shake Detection
5 Distinguishable Shakes
2
Scrolling through
images
1.5
1
Ignoring a call
Acceleration
Hanging up a call
0.5
X
Y
Z
0
1
Muting a phone
8
15 22 29 36 43 50 57 64 71 78 85 92 99 106 113 120 127 134 141 148 155 162 169 176 183 190 197 204
-0.5
-1
Graph:
Displays 5 shakes acted on
MMA7660FC. All Shakes below 1.5
g threshold
and above 1.3g.
-1.5
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the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
Samples
32 samples per second (133µA)
TM
7
Simple Weather Barometry Using MPL115A
Changes of 3 kPa to 7 kPa drops in pressure signal bad weather (storms/cyclone)
Water vapor in the air drops pressure as humidity makes air LIGHTER.
Analysis
Output
How:
dP > +0.25kPa
Sun Symbol
Dry air (~79% Nitrogen, ~20% Oxygen) is heavier than water vapor (H20)
-0.25kPa >dP >0.25kPa
Sun/Cloud Symbol
Dry air mixed with water vapor is lighter than pure dry air
dP <-0.25kPa
Rain Symbol
High water vapor/high humidity = drops in barometric pressure
Also:
High pressure areas next to low pressure areas will lead to lots of wind
Sudden pressure drops also signal a tornado for example
Clear skies/weather is seen by higher pressure or an increase of ~3 kPa
Issues:
Weather prediction also is dependent on humidity and wind direction
Example:
Pcomp (MPL115A
Pressure) (kPa)
PWeather (Ideal
weather) (kPa)
Simpleweatherdiff
Weather type
96.6
96.85
-0.25
Sun/Cloud
96.4
96.85
-0.45
Rain
97.4
96.85
0.55
Sun
96.92
96.85
0.07
Sun/Cloud
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the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
App Note AN3914
TM
8
MPR121 Capacitive Touch Sensor – Button/Switch Replacement
► Transparent
keypad
Advantages:
• Button replacement
• Switch replacement
• Innovative design
• Robust
• Low cost
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the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
TM
9
Module Agenda
►
What are sensors
►
How sensors sense
►
Evolution of sensors
►
Hands-on demonstration
►
Hands-on sensor labs
►
Additional resources
►
Review and Q&A
Freescale™ and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are
the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
TM
10
How Sensors Sense
A brief overview of how the following sensors sense:
► Accelerometers
► Pressure
► Touch
sensors
sensors
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the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
TM
11
How Accelerometers Work
G-Cell
A surface micro-machined capacitive sensing cell
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the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
TM
12
How Accelerometers Work – X-, Y-, & Z-Axis Movement
X Axis
Y Axis
Z Axis
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the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
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13
How Pressure Sensors Work
For All: P1>P2 for positive Voltage output
P1
P1
P1= P2
SOP
Dual
Port
Differential
P2
P2
No Pressure Difference
P1
P1
Gauge
MPAK
P2 = ATM
P1 > P2
P2
P1
Positive Pressure Applied
Absolute
Vacuum
LGA
Constraint Wafer
Diaphragm
Transducer
Bond Pads
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the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
TM
14
How Pressure Sensors Work
Output mV
Apply Kirchhoff voltage and current
laws:
C
►
PRT (Piezo-Resistive
Transducer)
►
►
Rg
R1
VOUT = VIN
VIN
R3
R2
A
► Capacitive (Pressure
Transducer)
► Low power consumption
► Small Size P-CELL
Px
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R2
R1 + R2
]
Change in Resistive
Diaphragm leads to Voltage
Shift.
Uncompensated
Compensated
Integrated
Timing
P-CELL
PREF
R3
R3 + Rg
D
VOUT
B
Well-established process
Temperature variations
[
C to V
Converter
TPMS
Satellite
Associated Airbag
System
TM
15
How Capacitive Touch Sensors Work
Electrode Measurement Charging Pad Capacitance
Finger
Electrode
Capacitance
Change
Detection
Multiplexed Electrodes
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the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
TM
16
Module Agenda
►
What are sensors
►
How sensors sense
►
Evolution of sensors
►
Hands-on demonstration
►
Hands-on sensor labs
►
Additional resources
►
Review and Q&A
Freescale™ and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are
the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
TM
17
Evolution of Sensors
►
Integrated functionality
►
Off-loading the analog-to-digital
conversion
►
Synergy of multiple sensors
working together
►
Full-system integration
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the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
TM
18
Evolution of 3-axis Low g Accelerometers
1
ANALOG 3-AXIS OUT
x
y
z
Analog XYZ Voltage
Output Only
MCU with
Transition
to
ActiveADC
Mode
•All analysis: done in the
MCU based on continuous
reading of XYZ voltage
readings
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the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
TM
19
Evolution of 3-axis Low g Accelerometers
2
DIGITAL 3-AXIS OUT
SDA
SCL
Digital XYZ with
embedded functions
MCU
INT1
INT2
Standby Mode
Transition to
Active Mode
Acceleration
Measurement
Orientation Detect
Sends
interrupt to
ODR
Change
main processor to Wakeup
with
selected
on predetermined
events
motion detection
All 6
Detects transition change
orientations
with
for 6 Orientation Positions
Portrait
to
on 45 degree and can be
configured with application
Landscape
Transitions
Shake Detection
2
1.5
Shake Detect
Detects a fast transition that
Single,
Double,
exceeds user-defined
Directional
Tap
threshold for a user-defined
duration
1
Acceleration
Tap Detect
0.5
X
Y
Z
0
1
8
15
22
29
36
43
50
57
64
71
78
85
92
99
106 113 120 127 134 141 148 155 162 169 176 183 190 197 204
-0.5
Configurable
Sleep mode
ODR
Change
sends interrupt to go into
when
events
not
Sleep Mode when no motion
detected for predetermined
detected
Auto Wakeup Detect
Auto Sleep Detect
X,
Y, can
Z Shake
Shake
be enabled on
any combination
of the 3
with
Directional
axes for one interrupt.
Info
-1
-1.5
Samples
time.
• Analysis done in the
Accelerometer and on the MCU
High Pass Filter
Interrupt with
Output Available
Internal
FIFO data buffer
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TM
20
Digital Accelerometer Example
MCU Low Power
Mode
Tap Interrupt?
No
Yes
MCU: Read
Accelerometer
Tap Status Register
To get Direction
And axis information
Direction?
MCU :
Flip Image on the
Screen Backward
Negative
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Positive
MCU :
Flip Image on the
Screen Forward
TM
21
Evolution of Pressure Sensors Analog to Digital
1
2
Resistive/Capacitive
Pressure output
SPI
or
I2C
Digital Output
DIGITAL Pressure Sensor
Temperature Compensation
Vout
Analog Voltage
Output Only
ANALOG Pressure Output
MCU with
Transition
to
ActiveADC
Mode
MCU
Pcomp = a0 + (b1 + c11*Padc + c12*Tadc) *
Padc + (b2 + c22*Tadc) * Tadc

Increasing Temp
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TM
22
Pressure
Example: Challenges to Altimeter implementation
Time
Slow drift = thermal or
barometric variation.
Ignore/re-zero
Slow drift = thermal or
barometric variation.
Ignore/re-zero
Walking up stairs.
Valid pressure change
rate and pattern.
Record altitude change
Slow drift = thermal or
barometric variation.
Ignore/re-zero
Elevator ride.
Valid pressure change rate
and pattern.
Record altitude change
Slow drift = thermal or
barometric variation.
Ignore/re-zero
Enter pressurized
building.
Invalid pressure change
rate and pattern.
Ignore/re-zero
Altitude (ft)
Pressure is not
Linear in nature.
For a short
distance (20 ft), it
can be assumed
to be linear.
ph =p0 x e
-h/7990m
h =18400m x log p0/ph
Pressure (kPa)
ALTIMETRY
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p0 = 101.3kpa
TM
23
Proper Solution: Smart Multiple Sensor
Altimetry/Dead Reckoning System
GPS System
Temp Sensor
XYZ Accelerometer
Pressure Sensor
Humidity Sensor
Gyro/Magnetic
Compass
Loss of GPS signal- Zero last
known altitude, location in front of building,
Wilderness, etc.
Compensation for
temperature shifts
Motion feedback – No motion?
No change for altitude, identifies drift/weather
scenario for changes. Steps/walking.
Dead
Reckoning
Calibration
Software
System
Altitude. Barometric pressure drift
compensation - make adjustments
due to weather patterns vs. Altitude.
Adjustments for air density, weather pattern
fine tuning
Motion, turning of user.
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Location
TM
24
Evolution Toward Full System Solutions
Accelerometer + MCU
STEP1:
32-bit MCU with accelerometer
embedded with the ability to operate in
both MASTER and SLAVE mode
Accelerometer + Pressure + MCU
STEP2:
32-bit MCU with accelerometer
+ pressure sensor embedded with the
ability to operate in both MASTER and
SLAVE mode
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the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
TM
25
Module Agenda
►
What are sensors
►
How sensors sense
►
Evolution of sensors
►
Hands-on demonstration
►
Hands-on sensor labs
►
Additional resources
►
Review and Q&A
Freescale™ and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are
the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
TM
26
Introduction to the Tower Sensor Module
►
Freescale digital accelerometer
►
Freescale digital miniature barometer
►
Freescale capacitive touch sensor
►
Freescale touch sensing software
suite
►
Sensirion digital
temperature/humidity
►
Intersil ambient light with proximity
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the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
TM
27
Freescale’s MMA7660FC Digital Accelerometer
Key Markets/Implementations
Landscape/portrait determination
Mobile product user interface by limited
gestures
User interface navigation with
2 position tilt to scroll
Power mode determination
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the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
TM
28
Freescale’s MPL115A Miniature Digital Barometer
Key Markets/Implementations
Medical

Respiratory as Altimeter
 Wound Management
Altimeter & Barometer

Temp & Pressure Sensing
Package Tracking

Pressure & Temperature
Information
Security & Safety

Ambient pressure switch
 Car Cabin and Room Pressure
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the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
TM
29
Freescale’s MPR121 Capacitive Touch Sensor
Key Markets/Implementations
►
Button replacement
►
Switch replacement
►
Touch pads
►
PC peripherals
►
MP3 players
►
Remote controls
►
Mobile phones
►
Lighting control
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the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
TM
30
Freescale’s MPR03x Capacitive Touch Sensor
Key Markets/Implementations
►
Button replacement
►
Switch replacement
►
Touch pads
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the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
TM
31
Freescale Touch Sensing Software Suite
Key Markets/Implementations
►
►
Touch pads
Multimedia boards
Keyboards
Touch screens
Mouse
Remote controls
Front panels
Gaming controls
Building control panels
Instrumentation panels
Medical devices interfaces
►
PC GUI application for electrodes characterization
►
►
►
►
►
►
►
►
►
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the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
TM
32
Temperature / Humidity – SHT21
Key Markets/Implementations
► Size
conscious devices
► Consumer
► Mobile
devices
phones
► Climate
control/monitoring
► Comfort
zone devices
► Automotive
applications
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the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
TM
33
Ambient Light / Proximity – ISL29011
Key Markets/Implementations
►
►
Display and keypad dimming adjustment and
proximity sensing:

Mobile devices: Smartphones, PDAs, GPS

Computing devices: Laptops, Webpads

Consumer devices: LCD-TVs, Digital Picture
Frames, Digital Cameras
Industrial and medical light and proximity
sensing
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the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
TM
34
Interact with the Sensors FreeMASTER Demonstrations
► Interact
with the various
sensors on the TWR-SENSOR
and view the real-time
interactions using the
FreeMASTER application
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the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
TM
35
Module Agenda
►
What are sensors
►
How sensors sense
►
Evolution of sensors
►
Hands-on demonstration
►
Hands-on sensor labs
►
Additional resources
►
Review and Q&A
Freescale™ and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are
the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
TM
36
Hands-on Sensor Labs – Overview of Labs
►
Incorporate the TWR-SENSOR into the TWRMCF5225X kit
►
Use the MQX RTOS to read data from the
sensor
►
Lab #1:
Display sensor data on a web site
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the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
TM
37
Hands-on Sensor Labs – Sensor / Tower System Setup
► Install
the following modules into your Tower System
Elevator Modules:
•
TWR-MCF5225X
• TWR-SENSOR
• TWR-SER
(Ensure the primary edges are aligned and inserted into the functional
elevator)
► Connect
the Ethernet cable between the TWR-SER and the
Host PC
► Connect
the USB cable between the TWR-MCF5225X and
the Host PC
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TM
38
Hands-on Sensor Lab #1 – Compiling the MQX Sensor Project
►Follow
•
•
•
the lab guide:
Open CodeWarrior Project
Examine the source code
Compile Tower Sensor Project
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the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
TM
39
Hands-on Sensor Lab #1 – Programming the Tower MCU Module
►Follow
•
•
the lab guide:
Program the TWR-MCF5225X
Reconnect the USB cable between the TWRSENSOR and the PC
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TM
40
Hands-on Sensor Lab #1 – Interact with the Sensors
►Follow
•
•
the lab guide:
Open the sensor data Web page
Interact with the sensors
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the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
TM
41
Module Agenda
►
What are sensors
►
How sensors sense
►
Evolution of sensors
►
Hands-on demonstration
►
Hands-on sensor labs
►
Review and Q&A
►
Additional resources
Freescale™ and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are
the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
TM
42
Review and Q&A
By now, you should:
►
Have a broader awareness of the Freescale Sensor Portfolio
►
Be familiar with potential applications of sensors, including the
coordination of data from multiple sensors
►
Be familiar with the Freescale Tower System Sensor Module
and it’s use of TWRPI’s to quickly evaluate various sensors
►
Be familiar with how MQX can be utilized to interact with the
TWR-SENSOR module, an Ethernet stack and a USB stack
Freescale™ and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are
the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
TM
43
Module Agenda
►
What are sensors
►
How sensors sense
►
Evolution of sensors
►
Hands-on demonstration
►
Hands-on sensor labs
►
Review and Q&A
►
Additional resources
Freescale™ and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are
the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
TM
44
Freescale Documentation
►
MC9S08QE96 Data Sheet
►
MC9S08JM60 Data Sheet
►
MMA7660FC Accelerometer Data Sheet
►
MPL115A Barometer Data Sheet
►
MPR121 Capacitive Touch Sensor Data Sheet
►
MPR03x Capacitive Touch Sensor Data Sheet
►
Touch Sensing Software Users Guide
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the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
TM
45
Further Reading and Training
►
Freescale Tower System
►
Freescale Sensors
►
FreeMASTER
►
CodeWarrior Development Tools
►
Freescale MQX Software Solutions
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the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
TM
46
Back-up Slides
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the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
TM
Accelerometers
Accelerometers Key Terminology
g’s (acceleration due to gravity)
Sensitivity mV/g or counts/g
0g offset
Dynamic range
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the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
TM
48
Pressure Sensors
Pressure Sensors Key Terminology
Type: absolute, differential, gauge
Temperature compensation
Auto zero the offset
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the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
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Freescale MMA7660FC Digital Accelerometer
Key Markets/Implementations
Landscape/portrait determination
Mobile product user interface by limited
gestures
User interface navigation with
2 position tilt to scroll
Power mode determination
Freescale™ and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are
the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
TM
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Freescale MPL115A Miniature Digital Barometer
Key Markets/Implementations
Medical

Respiratory as Altimeter
 Wound Management
Altimeter & Barometer

Temp & Pressure Sensing
Package Tracking

Pressure & Temperature
Information
Security & Safety

Ambient pressure switch
 Car Cabin and Room Pressure
Freescale™ and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are
the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
TM
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Freescale MPR03xCapacitive Touch Sensor
Key Markets/Implementations
►
Button replacement
►
Switch replacement
►
Touch pads
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the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
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Freescale MPR03xCapacitive Touch Sensor
Features
►
►
►
►
►
►
►
►
►
►
►
I2C interface, with optional IRQ
Compact 2 mm x 2 mm x 0.65 mm
8-lead UDFN package
1.71 V to 2.75 V operation
8 μA average supply current
4 μA maximum shutdown current
Intelligent touch detection capability
Threshold based detection with hysteresis
Supports up to 3 touch pads
Only one external component needed
Multiple devices in a system allow for up to 6 electrodes
-40°C to +85°C operating temperature range
Freescale™ and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are
the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
TM
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Freescale MPR121Capacitive Touch Sensor
Key Markets/Implementations
►
Button replacement
►
Switch replacement
►
Touch pads
►
PC peripherals
►
MP3 players
►
Remote controls
►
Mobile phones
►
Lighting control
Freescale™ and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are
the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
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Features
Freescale MPR121Capacitive Touch Sensor
►I 2 C
interface, with optional IRQ
►Compact 3 x 3 x 0.85 mm 20-lead
QFN
►1.71 V to 3.6 V operation
►29 μA supply current
►4 μA maximum shutdown current
►Intelligent touch detection capacity
►Threshold based detection with
hysteresis
►Supports up to 12 touch pads
►Only one external component
needed
►(4) I2C addresses allow up to 48
electrodes
►-40°C to +85°C operating temp
range
Freescale™ and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are
the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
Feature Improvements
►New
auto-configuration
system
►2nd generation filtering
system
►Increased voltage range
►100% independent
electrode control
TM
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Freescale Touch Sensing Software Suite
Key Markets/Implementations
►
►
Touch pads
Multimedia boards
Keyboards
Touch screens
Mouse
Remote controls
Front panels
Gaming controls
Building control panels
Instrumentation panels
Medical devices interfaces
►
PC GUI application for electrodes characterization
►
►
►
►
►
►
►
►
►
Freescale™ and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are
the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
TM
58
Freescale Touch Sensing Software Suite
Features
►
►
Full API set support
Configurable rotary, slider and keypad decoders
Smart auto-calibration mechanisms to prevent
environmental hassles
Noise rejection algorithms
Optimized buffer structure enabling any
arrangement of electrodes
Ability to enable and disable keys on runtime
Auto repeat, stuck-up key, gorilla hand and other
typical HMI function capability
Ability to co-exist with other application code
►
PC GUI application for electrodes characterization
►
►
►
►
►
►
Freescale™ and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are
the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
TM
59
Temperature / Humidity – SHT21
Key Markets/Implementations
► Size
conscious devices
► Consumer
► Mobile
devices
phones
► Climate
control / monitoring
► Comfort
zone devices
► Automotive
applications
Freescale™ and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are
the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
TM
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Ambient Light / Proximity – ISL29011
Key Markets/Implementations
►
►
Display and keypad dimming adjustment and
proximity sensing:

Mobile devices: Smartphones, PDAs, GPS

Computing devices: Laptops, Web pads

Consumer devices: LCD-TVs, Digital Picture
Frames, Digital Cameras
Industrial and medical light and proximity
sensing
Freescale™ and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are
the property of their respective owners. © Freescale Semiconductor, Inc. 2009.
TM
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TM