Home Appliances
Cooking Products
Overview
Home appliance controls are changing from
purely mechanical to fully electronic as
microcontrollers are incorporated into the
designs.
demand for new features.
Microcontrollers support these new,
innovative cooking appliance features.
Freescale’s SMARTMOS™ analog portfolio
provides power actuation (MC33887),
sensing (MC33794), and multiple switch
detect (Flexible I/O) family ICs. The
MC33794 provides water level sensing. The
Flexible I/O family provides a simple system
power conservation solution providing a
WAKE output with which the MCU power
supply can be enabled when MCU
activation is required. It allows optimized
switch OPEN/CLOSE status verification of
multiple switches with changes immediately
reported to the MCU.
The migration in the industry from
mechanical to electromechanical control,
then to full electronic control has been
ongoing for several years.
Today, microcontrollers provide the
intelligence to every electronic solution.
The primary reasons driving the adoption of
electronics are reliability, cost, and improved
energy efficiency.
The functionality of the oven/cooker/range
has been changing gradually over the last
five years and is driven by consumer
TYPICAL MICROPROCESSOR APPLICATION DIAGRAM
Key
Pad
Temperature
Sensors
MC33972
MC33975
MC33993
LAN Connectivity
Feature in Future
Models:
Swapping recipes,
Sending messages
to other products
Fan
ADC
I/O
Timing
Functions
I/O
Display
Panel
Microcontroller
I/O
MC33886
MC33887
MC34922
H-Bridge
Power IC
NVM
PWM
ADC
Main Cavity
Heating Element
or Gas Regulator
T
R
I
A
C
}
Tailored cooking
program input by
user stored and
managed here
Vapor / Moisture Sensor
Hob Ring
Elements
Key Benefits
> Delivers high-precision
control over the cooking
process using
microcontrollers’ intelligent
management programs
> Offers intelligence in the
appliance that results in
improved energy efficiency
and reduced energy cost
Freescale Ordering InformationNote
Part Number
Product Highlights
Additional Information
MC33794
Electric Field Imaging Devices
www.freescale.com/analog
MC33886
H-Bridge Driver (5.2 A)
MC33887
H-Bridge Driver with Sleep Mode (5.2 A)
MC33972
22 Input Multiple Switch Detection Interface with Suppressed Wake-Up
MC33975
22 Input Multiple Switch Detection Interface with Higher Wetting
Current
MC33993
22 Input Multiple Switch Detection Interface
MC34922
Dual Power H-Bridge (4.0 A)
MC68HC(9)08ABxx
ADC, SCI, SPI, EEPROM
MC68HC(9)08AZxx
ADC, SCI, SPI, CAN, EEPROM
MC68HC(9)08GPxx
ADC, SCI, SPI
MC68HC(9)08GTxx
ADC, SCI, SPI, ICG
MC68HC(9)08JKxx
ADC
MC68HC(9)08JLxx
ADC
MC68HC(9)08SRxx
ADC, SCI, I2C, Temp Sensor
MC68HC908GRxx
ADC, SCI, SPI
MC68HC908KXxx
ADC, SCI
MC68HC908MRxx
ADC, PWM, SCI, SPI
MC68HC908QXxx
Low Pin Count, Low Cost
www.freescale.com
Note: Search on the listed part number.
Design Challenges
Cost
The appliance market is highly
competitive and cost sensitive.
Eliminating just a few cents from the cost
of a solution can save thousands of
dollars in this high-volume market.
Flexibility
A new model can be introduced every
year, with products having a relatively
short life cycle. This means software
problems must be eliminated quickly,
which requires professional development
tools and faster, more efficient
development cycles.
Legislation
Energy regulations and consumer
demand for efficient appliances that use
less energy are driving manufacturers to
design products to meet these
requirements.
Regional Variation
The White Goods market is dominated
by global companies who are trying to
minimize development costs by
introducing common platforms with the
capability to be used around the world.
These platforms must be flexible enough
SG2036-2
to accommodate regional variations in
such areas as the user interface, where
visual displays are required to support
different language options.
Measurement Accuracy
Measuring temperatures in different
zones is critical to the performance of the
appliance.
Freescale Semiconductor Solution
Freescale Semiconductor is the industry
leader in Flash microcontrollers. Flash
memory is a nonvolatile memory (NVM)
technology that provides access to the
following features:
> Faster programming and erase times
of the Flash memory with reprogram
capability
> Provides end-of-line customizing for
regional variations in consumer
demands
> Enables changing legislation to be
satisfied with software-enabled
intelligence
> Supports remote diagnostics and
preventative maintenance
> Minimizes programming costs while
increasing code flexibility with
production line programming
> Reduces code obsolescence, which
saves on scrapped product costs
> Improves time to market, which
reduces lead times
> Standardizes platforms, which
reduces product variability
> In-application programming, which
reduces time to market
> Eliminates sockets and rework with
in-system programmable Flash
> Improved write/erase and data
retention performance for Flash
> Provides field upgrade capability while
allowing remote reprogramming of the
microcontroller
> Flexible block protection and security
> Emulation of EEPROM by Flash
Embedded Flash brings new flexibility to
your designs:
> Eliminates the need for external
EEPROM with 10,000 write/erase
cycles because Flash can emulate
EEPROM
Development ToolsNote
Tool Type
Product Name
Vendor
Description
Additional Information
Software
CWHC08
Metrowerks
CW Full Package for HC08
www.metrowerks.com
Software
CWHC08ASM
Metrowerks
CW ASM Tools for HC08
Software
CWHC08CC
Metrowerks
Stand-Alone C/C++/cC++/EC++ Compiler for HC08
Software
CWHC08MIG
Metrowerks
CW Full Package for HC08 Migration
Hardware
68HC08 Emulators, Cables,
and Adapters
Freescale Semiconductor
Emulation Modules, Flex Cables, and Target Head Adapters
in Support of 68HC08 MCUs
Hardware
68HC08 Programmers
Freescale Semiconductor
Programmer Boards in Support of 68HC08 MCUs
Development
In-Circuit Simulator (ICS) Kits Freescale Semiconductor
Low-Cost Tools for Developing and Debugging Target
Systems Incorporating 68HC08 MCUs
Development
Modular Development
System (MMDS) Kits
Freescale Semiconductor
Full-Featured Emulator System for Developing Embedded
Systems Using 68HC(9)08 MCUs
Development
Modular Evaluation System
(MMEVS) Kits
Freescale Semiconductor
Economical, Two-Board Emulator for the 68HC(9)08 MCUs
Development
MON08 Cyclone
Freescale Semiconductor
Provides all the capabilities of the MON08 Multilink plus the
ability to function as a stand-alone programmer with push
buttons and LED user interface.
Development
MON08 Multilink
Freescale Semiconductor
Low-Cost Development Tool for 68HC08 Flash MCUs
Evaluation Kit
KIT33794DWBEVM
Metrowerks
Electric Field Sensing Device
Evaluation Kit
KIT33887DWBEVB
Metrowerks
225 mΩ 150 °C and Sleep Mode and Current Sense
Evaluation Kit
KIT33993DWBEVB
Metrowerks
22 Input Multiple Switch Detection Interface
Evaluation Kit
KIT34922PNAEVB
Metrowerks
Dual H-Bridge with Load Current Feedback
www.freescale.com
www.metrowerks.com
Note: Search on the listed product name.
Related DocumentationNote
Document Number
Description
Additional Information
APDPAK
Analog ICs Integrated Solutions Pitch Pack
www.freescale.com
BR68HC08FAMAM
68HC08 Family: High Performance and Flexibility
CWDEVSTUDFACTHC08
CodeWarrior™ Development Studio for 68HC08, Special Edition Brochure
FLYREMBEDFLASH
Embedded Flash: Changing the Technology World for the Better
SG1002
Analog Product Selector Guide
816PITCHPAK03
MCU 8- and 16-Bit Sales Binder
Note: Search on the listed document number.
SG2036-3
Notes
Learn More: Contact the Technical Information Center at +1-800-521-6274 or +1-480-768-2130.
For more information about Freescale products, please visit www.freescale.com.
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. 2005. All rights reserved.
SG2036
REV 3
6/2005
June2005
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