Transcript Sleep - Microchip

Maximizing Energy Efficiency
Prize Drawing!!
Fill out your Prize Drawing card for a chance to
win a Free MCP3911 ADC Eval Board
Evaluate the performance of the MCP3911 dual-channel ADC
Development platform for 16-bit PIC-based applications
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 2
Prize Drawing!!
• Enter to win a unique
experience to ride in
Nuvation’s Electric
Racecar!
• Sign-up times available
at Microchip’s
Registration Booth
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 3
Agenda
Low Power Trends and Design Challenges
nanoWatt XLP eXtreme Low Power
Maximizing Battery Runtime and Efficiency
Reducing System Power
Measuring & Monitoring Power
Additional Resources & Summary
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 4
Low Power Trends and Design
Challenges
Demand Rising for Low Power Designs
Fast growing battery applications demand longer life
Government & Green Initiatives: 1-Watt, 1/2-Watt
Energy harvesting designs now a reality
Metering
Consumer
Medical
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Security
Slide 6
Smart Energy Trends
Green legislation and regulation
Environmentally-friendly products
Reducing load on utility providers
Longer battery life
Smaller form factors
Reduced heat dissipation
Lower system costs
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 7
Low Power Design Challenges
Power Supply Choice – Battery, Energy
Harvesting…
Form Factor – Battery, Size, Weight
Maintaining Performance and Features
User Interface – LCD, Touch, LEDs, Buzzer
Connectivity – Wireless (RF, 802.11…),
Wired (USB…)
Robustness and Reliability
System Efficiency
Cost
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 8
Typical Application Profile
Long battery life required 20 years in some cases
Must be robust & reliable
Example - Must detect dying battery, provide warning
Signals to alert resident and perform safe shutdown
Must periodically perform specific tasks
Sleep
Brown Out
Reset
WDT
Real Time
Clock
Example - Smoke Detectors sample air quality once every
N seconds
Low run current requirements
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Run
Current
Slide 9
Factors Affecting Power Consumption
Energy Consumption = VDD x (Irunx trun+ Ipd x tpd + Iint x tint)
Power Down Mode
Oscilloscope Plot
Sleep Current
Sleep Time
Real-Time Clock
Watchdog Timer
Brown Out Reset
Pin Leakage
IDD
uA/MHz
Intermediate
Wake Up Time
Run Mode
IAVG
Run Current
Execution Time
Power
management
modes
IPD
nA
Power Down Time
Run Time
Wake Up Time
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 10
Lowering Active Current
Enable Only Peripherals Used
Use Optimal Active or Run Mode and Clock
Speed
Optimize Your Code
Benchmark and optimize for speed, size and RAM
Smart Circuit Design
Floating I/Os, I/O states (Sleep), ceramic & storage
caps…
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 11
Lowering Sleep Power
Lower sleep current
Lower Operating Voltage
Stay in Sleep mode as long as possible
Minimize peripherals used in Sleep
Real-time Clock (RTC )
Watchdog Timer (WDT or DSWDT)
Brown-out Reset (BOR)
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 12
nanoWatt XLP
eXtreme Low Power Technology
nanoWatt XLP Technology
Definition
nanoWatt XLP (eXtreme Low Power) Technology
Microchip proprietary technology used to design microprocessors with
power consumption below 1 µA in standby mode with an RTCC or WDT
running.
Design and manufacturing processes fined tuned for low power
Specialized low power peripherals introduced
Industry-leading Benchmark for Low Power MCUs
World’s lowest Sleep and Run Currents
Up to 5-7 times better than competing MCUs
Best specifications achieved to date
Sleep:
9 nA @1.8V
Real-time Clock Calendar (RTCC):
450 nA @1.8V
Watchdog Timer (WDT):
200 nA @2.0V
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 14
XLP Low Power Modes
7 operating modes, configured by software:
RUN [active power]
Core & Peripherals run at same clock speed
DOZE [active power]
Core slower, peripherals full speed
IDLE [active power]
Core OFF, peripherals ON
SLEEP [static power]
Core OFF, most peripherals OFF
Low Voltage SLEEP [static power]
Core OFF, most peripherals OFF
DEEP SLEEP [static power]
Core & most peripherals not powered
VBAT [static power]
Core & all peripherals power removed or battery dead
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 15
Choice of Power Down Modes
Three Application Scenarios:
2
1
3
Sleep most of the time
Wake-up every second to
process data then
go back to sleep
Sleep most of the time
Wake-up every few
seconds to process data
then go back to sleep
Sleep most of the time
Wake-up to
process data once
every hour, day etc.
Very likely to use
SLEEP Mode
Very likely to use
LV SLEEP Mode
Very likely to use
DEEP SLEEP mode with RTCC
Current Consumption
3 Power Down Options
Sleep
Low Voltage (LV) Sleep
Deep Sleep
Run Sleep LV Deep
Sleep Sleep
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 16
Best in class Snap Shot
32 kHz
PIC®
MCU with
XLP Technology
Pins
Sleep
(nA)
Deep Sleep
(nA)
WDT
(nA)
SOSC/RTCC
(nA)
μA/MHz
2
8/14
20
-
300
600
34
64-128
28/44
200
9
330
700
197
PIC24F16KL402
4-16
14/20/28
30
-
210
690
150
PIC24FJ64GB004
32-64
28/44
200
20
200
500
250
PIC24FJ128GA310
64-128
64/100
330
10
270
400
150
PIC16F1823
PIC18LF47J13/J53
Flash
(KB)
•All numbers are typical values at minimum VDD, EC, taken from the datasheet. Datasheet not having 1MHz EC, numbers are (Typ Current/Max Freq)
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 17
Getting Started XLP 16-bit Development Board
Battery Options
Power Supply
CR2032 or 2 x AAA
Generous
Prototyping Area
USB, DC
Serial Accessory
Port
Debugger
Connection
PICtail™ Connector
6-pin Harvester
Connector
Prototype - RF, IR, Analog
mTouch™ Technology Buttons
Part #: DM240311
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 18
Maximizing Battery
Runtime and Efficiency
Consumer Replaceable Battery Comparison
Battery Type
Key Attributes
Alkaline AA, AAA,
AAAA
•
•
•
Inexpensive
Widely available
Low to High Drain
Wide variety of portable devices
Lithium Iron Disulfide
AA, AAA
•
•
•
•
•
High Performance
15 Year Shelf Life
Cold Temperature
Safe and Reliable
Lightweight
World’s Longest Lasting AA/AAA
in High Tech Devices
Lithium Coin CR2025,
CR2032
•
•
•
•
Small
Lightweight
Low drain, low peaks
7 – 10 year shelf life
Application & Battery
Selection
Small, low energy devices
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 20
Alkaline Discharge Curve
Alkaline
AA size battery; 50 mW continuous
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 21
Alkaline Battery Capacity
3,500
mAh Capacity
3,000
2,500
2,000
1,500
1,000
Alkaline
500
0
0
200
400
600
800
1000
1200
1400
1600
1800
2000
mA Drain
AA size batteries; continuous discharge to 1.0V
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 22
Alkaline Continuous vs. 10% Duty Cycle
More capacity can be utilized in an alkaline battery
in non-continuous applications compared to
continuous discharge due to voltage recovery.
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 23
Lithium FeS2 Discharge Curve
Lithium Iron Disulfide
Alkaline
AA size battery; 50 mW continuous
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 24
Lithium FeS2 Low Rate Discharge
•2Li + FeS2  Li2FeS2
Lithium Iron Disulfide
•2Li + Li2FeS2  Fe + 2Li2S
Alkaline
AA size batteries; 1 mA continuous
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 25
LiFeS2 Battery Capacity
3,500
mAh Capacity
3,000
2,500
Lithium Iron Disulfide
2,000
1,500
1,000
Alkaline
500
0
0
200
400
600
800
1000
1200
1400
1600
1800
2000
mA Drain
AA size batteries; continuous discharge to 1.0V
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 26
Lithium Coin Discharge Curve
1 x Alkaline AAAA w/Boost
2 x Alkaline AAAA in series
CR2032
1 mA continuous; Boost = Microchip MCP1640 output to 3.3V
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 27
Lithium Coin Energy
2 x Alkaline AAAA in series
1 x Alkaline AAAA w/Boost
CR2032
Continuous discharge; Boost = Microchip MCP1640 output to 3.3V
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 28
Battery Efficiency Example
•
•
•
1 x AA Flashlight
Minimum Operating
Voltage = 0.9V
Average Drains
•
•
•
1000 mA (Bright)
250 mA (Dim)
Pulse Width
Modulation to
control dimming
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 29
Battery Efficiency Example
Discharging to 0.9 V
removes nearly all
available capacity in
both alkaline and
lithium batteries
Higher operating voltage
and flatter discharge
curve of lithium batteries
will improve runtime and
light output.
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 30
Battery Efficiency Example
Approximate
Max Capacity
Alkaline = 2800 mAh
Lithium = 3300 mAh
Approximate Efficiency
Bright
Alkaline = 25%
Lithium = 91%
Dimming via PWM further
increases efficiency; lowering
overall drain by pulsing the battery
as opposed to a continuous drain.
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Dim
Alkaline = 61%
Lithium = 98%
Slide 31
Battery Management Systems
Nuvation Engineering
Battery Management Systems
Monitor and manage large battery packs
Each cell must have it’s voltage monitored and
balanced
Substantially extends battery life by ensuring
cells are not over charged nor over discharged
With some Lithium chemistries, this is required to
prevent fires!
A single bad cell can disable an entire battery!
Requires precision closed loop electronics
Problem: Each Battery Application has own
specific requirements
Battery size
Battery chemistry
Communication interfaces
Electronics form factor
Redundancy
Safety standards
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 33
Custom Engineered Battery Management Solutions
Customized, flexible solution built
around Microchip dsPIC33 processor
Scalable designs
(10’s to 1000’s of cells)
Compatible with lithium, nickel, silver
based and other battery chemistries
Maximizes usable battery capacity
through voltage & temperature
monitoring and balancing
Cost efficient distributed topology
Software configurable to detect fault
conditions early
Low power consumption
Performance validated
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 34
Challenge #1: Fast time to market
dsPIC® DSC EVM
Challenge:
Fast time to market
Customer and time constraints required
developing software in parallel with
Controller hardware
Solution:
dsPIC® DSC EVM allowed us to test
Packman hardware in electric race car
development test platform
Cool flexible “backplane” approach to
EVM development allowed us to make an
“E-Rex Daughtercard”
add-on modules to expedite development
Ethernet expansion board
CAN expansion board
Custom prototyping board
MPLAB® X enabled expedited dsPIC DSC
development natively on Linux
workstation
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 35
Challenge #2: Data Collection and Real-Time Processing
Challenge #2:
Real time processing of
hundreds of cell
voltages and
temperatures
Solution:
dsPIC33 has large SRAM
and DSP capabilities
Enabled data collection
and real-time processing
of hundreds of cell
voltages and
temperatures in an
application like E-Rex
Still bandwidth left over
to implement a digital
filter to process stack
current.
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 36
Powering Your Application
LCD
PIC16LF1937
VDD

:
T

VSS

Any PIC® MCU
Typical 2 x AAA Battery Circuit
VSS
What about using a Single Cell with a
PIC® MCU?
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 38
VSS
LCD
PIC16LF1937
VDD

:
T

VSS

© 2013 Microchip Technology Incorporated. All Rights Reserved.
Any PIC® MCU
Typical 2 x AAA Battery Circuit
Slide 39
VSS
SW

GND
VSS
:
T

EN
VSS
VDD
VIN
VOUT
VFB
VSS
VSS

Any PIC® MCU
PIC16LF1937
LCD
MCP1624
Using a Single Cell with a PIC® MCU
VSS
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 40
VSS
VDD Stability Over Battery Life
VBATT
PIC Microcontroller
MCU VDD
Battery Voltage
GND
VSS
EN
VIN
MCP1624
SW
VOUT
VFB
VSS
VSS
VSS
2.0 - 5.5V
1.5V
0.8V
VSS
VSS
time
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 41
Performance
SW
Stable 2.0V–5.5V output across full VBAT
Output current up to 175 mA
Cost
GND
EN
MCP1624
Why Use the MCP1624?
VIN
VOUT
VFB
Approximately the price of an AA battery in volume
Reduced shipping burden
Small 6-pin footprint SOT-23 & 2 × 3 mm DFN
Lightweight, Small form factor, portable
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 42
What about a Real-time Clock?

X1
X2
VBAT
+3V
VSS
:
T

VDD
MFP
SCL
SDA
VSS
VSS

Any PIC® MCU
PIC16LF1937
Crystal
32.768 kHz
MCP79410
LCD
VDD (MCP1624 or 2 x Alkaline)
MCP79410 New Real-time Clock & Calendar
• Low Voltage and Current
VDD = 1.8V to 5.5V , VBAT = 1.3V to VDD - 0.2V, IBAT = 700 nA @ 1.8V
• 1 Kbit EPROM, 64 Bytes SRAM and 64 bit Unique ID
• Small 8-pin footprint SOIC, MSOP, TSSOP and 2 × 3 mm TDFN
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 43
VSS
Complementary
Low Power Analog & Memory
Industry Leading Low Power Analog
•Power
•Management
•Signal
•Chain
•USER INTERFACE
•External
•Memory
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 45
Power Management
Common components of
battery-powered systems
Switching power
supplies
Temperature sensors
Linear regulators
Supervisor chips
Charge pumps
Single Cell Booster
•IQ = 45 mA, 100 nA Sleep
•IDD = 6 mA
•IQ = 1.6 mA
•IDD = 1 mA
•Sleep @ 100 nA
•Shutdown @ 700 nA
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 46
Signal Chain
Commonly used analog products in
battery-powered systems
Operational
amplifiers (Op Amps)
Comparators
Analog-to-Digital
Converter (ADC)
Digital-to-Analog
Converter (DAC)
Digital potentiometers
•IQ = 600nA
•IQ = 600nA
•18-bits @ 39mA
•12-bits @ 200mA
•Sleep @ 300nA
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 47
Microchip Analog - Best-in-Class
Use of NVM trim and low power in Analog
products
Provides high-performance innovative
analog solutions
Meets needs of high-volume applications
Meets high quality requirements
of the automotive industry
Reduces customer and
manufacturing system costs
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 48
Proprietary Low Power Enabling Technology
1 µA Bandgap References
Low Power CMOS Process
Enables low power references
and voltage regulators
Lower power than competing
processes
Simplified Designs
Proprietary designs reduce
circuit complexity giving more
performance for less power
The Low Power
Analog Solution
Non-volatile Trim
Accuracy achieved through
after- package trimming, not
complex, power consuming
circuitry
Understanding of Customer
Needs
-
Temperature Stable High Value
Poly Resistors
High resistance in small space
needed for low power
consumption, difficult to
manufacture
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Only necessary features are
included, unnecessary power
consuming features are left out
Slide 49
Industry-Leading Low Power Products
Supervisors
Op Amps/Comparators
MCP604X, MCP614X,
MCP654X
- 600 nA quiescent current
MCP111/2, MCP102/3,
MCP121/131
- 1 µA quiescent current
DACs
ADCs
MCP3421 Delta-Sigma
- 145 µA supply current
MCP3551 Delta-Sigma
- 120 µA supply current
MCP4728, 12-bit, 4-ch
- 20 µA supply current per ch
Charge Pumps
Battery Chargers
- 1 µA typical shutdown
- Auto shutdown features
Switching Regulators
MCP1603 Buck regulator
- 45 µA quiescent current
MCP1640 Boost regulator
- 19 µA quiescent current
MCP1256/7/8/9
- 10 µA supply current
LDOs
Safety & Security
RE46C107/117 Horn Drivers
- 2-5V operating voltage
Digital Potentiometers
MCP434X/436X
- NVM, quad channel
- 7/8-bit resolution
© 2013 Microchip Technology Incorporated. All Rights Reserved.
MCP1700
- 1.6 µA quiescent current
MCP1702
- 2 µA quiescent current
Slide 50
Low-Power Memory Products
Microchip’s low-power memory products
24VL024
1.5V, 2KB
IDD = 400 mA
24AA256
1.7V, 256KB
IDD = 400 mA
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 51
Measuring and
Monitoring Power
Power Monitoring is a Broad Market
Computing
AC/DC Supplies (PSU)
Tablets & Laptops
Consumer Electronics
Energy Measurement in any product
except utility metering
Servers
E-circuit Breakers
Power Distribution Units (PDU)
Consumer Power Strips
Smart Outlets
Appliances
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Industrial Meters
Slide 53
What are the Concerns?
•Accuracy
(Accuracy vs. Cost)
•Calibration
It’s a necessary evil
•Simplicity
“I just want to connect power and read data out”
•Expertise
Customization & Support
•Cost
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 54
Options by Accuracy
3%
Error
3%-- 5%
5% Error
MCU Only
MCU
with
ADC
1%1%
- 3%
- 3% Error
Error
MCU +
Op Amps
MCU
with
ADC
0.1%
1%
Error
0.1% - -1%
Error
MCU +
Measurement
IC
Energy Measure AFE
Calculation Engine
Potential for Lowest
Calibration Cost
Potential for Lowest
Chip Cost
Lowest Solution Cost Determined by Specific Design Needs
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 55
Easy to Use - On-board DC Current Measurement
V
Energy Measure
AFE
I
Fixed Calculation
Engine
Data
Temp
EMC1701/02/04
PAC1710/20

Single Chip Power Monitoring Solution
Built-in calculations – No software work (“Black Box”)
 SMBus or I2C™ interface

On-Chip & external thermal measurement (EMC170x)

© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 56
Lowest Cost & Customizable Single Phase - Shunt
Solution
1% Accurate @ 100 mA to 15A
1 point calibration
~150:1 Dynamic Range, 1% Accuracy
MCP6L2
LPFs
PIC24F04KA201 (4k Flash)
PIC24F08KL200 (8k Flash)
MCU
UART/I2C™/SPI
LPFs
HPF
Schematics, source code, GUI, presentation, and accuracy data available today
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 57
Best Accuracy & Customizable Single Phase - Shunt
MCP3911
SPI
PIC®
MCU
Serial I/F
MCP3911 Measurement IC
• 10 mA to 80A (8000:1)
• Down to 0.2% Accuracy

Capable of widest current range & best accuracy

Fastest calibration

Requires energy measurement software
MCP3911 Eval Board (ADM00398)
• Select processor module of choice
• Connect shunt or CT
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 58
Additional Resources
& Summary
nanoWatt XLP Battery Life Estimator
XLP Battery Life Estimator (Free Download)
Easy to Use & Flexible
Select PIC® MCU and battery type
Enter application Run and Sleep times
Select peripherals and
application currents
View battery life, average and maximum
current estimates
Add new device and battery profiles
Save profiles and compare results
© 2013 Energizer, Energizer and other marks are trademarks owned by Energizer.
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 60
eXtreme Low Power Design Center
Featuring…
White Papers, Tips n’
Tricks
Application Notes
Case Studies
Deep Sleep Web Seminar
XLP Videos
Product Data Sheets &
Family Reference Manuals
Competitive Benchmarks
Development Tools
XLP Product Selection
Samples
Purchasing
www.microchip.com/XLP
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 61
Power Monitoring Design Center
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 62
Designing for Power Efficiency
XLP Portfolio has World’s lowest power
9 nA Deep Sleep and <35 μA/MHz active currents
Smart Low Voltage MCP1624 device
Enables single cell operation
Industry-leading Low Power integration
LCD, Touch Sensing, USB & more
Complete Development Support
Energy Harvesting Development Tool Support
Low Power Wireless, Analog and Memory
products
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 63
This presentation was
brought to you by
Visit www.digikey.com/microchipdiscount
for Design West 2013 Special Discounts
Digi-Key Coupon also included in training bag
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 64
Questions?
Thank You
Trademarks

The Microchip name and logo, the Microchip logo, dsPIC, KeeLoq, KeeLoq logo,
MPLAB, PIC, PICmicro, PICSTART, PIC32 logo, rfPIC and UNI/O are registered
trademarks of Microchip Technology Incorporated in the U.S.A. and other
countries.

FilterLab, Hampshire, HI-TECH C, Linear Active Thermistor, MXDEV, MXLAB,
SEEVAL and The Embedded Control Solutions Company are registered
trademarks of Microchip Technology Incorporated in the U.S.A.

Analog-for-the-Digital Age, Application Maestro, chipKIT, chipKIT logo,
CodeGuard, dsPICDEM, dsPICDEM.net, dsPICworks, dsSPEAK, ECAN,
ECONOMONITOR, FanSense, HI-TIDE, In-Circuit Serial Programming, ICSP,
Mindi, MiWi, MPASM, MPLAB Certified logo, MPLIB, MPLINK, mTouch,
Omniscient Code Generation, PICC, PICC-18, PICDEM, PICDEM.net, PICkit,
PICtail, REAL ICE, rfLAB, Select Mode, Total Endurance, TSHARC,
UniWinDriver, WiperLock and ZENA are trademarks of Microchip Technology
Incorporated in the U.S.A. and other countries.

SQTP is a service mark of Microchip Technology Incorporated in the U.S.A.

All other trademarks mentioned herein are property of their respective
companies.

© 2013, Microchip Technology Incorporated, All Rights Reserved.
© 2013 Microchip Technology Incorporated. All Rights Reserved.
Slide 67