Home Appliances Refrigerators and Freezers Overview Home appliance controls are changing from purely mechanical to fully electronic as microcontrollers are incorporated into the designs. savings to the consumer. Microcontrollers are crucial in maximizing appliance efficiency while supporting a variety of features. The migration in the industry from mechanical to electromechanical control, then to full electronic control has been ongoing for several years. Freescale’s SMARTMOS™ analog portfolio provides power actuation (MC33289), 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. Today, microcontrollers provide the intelligence for every electronic solution. The primary reasons driving the adoption of electronics are reliability, cost, and improved energy efficiency. Continually operating, refrigerators account for much of the energy consumed in an average household. Any energy efficiency refinement of refrigerators can result in real } TYPICAL MICROPROCESSOR BLOCK DIAGRAM MC33972 MC33975 MC33993 MSDI Temperature Sensors Moisture Sensor Door Closed Sensor MC33974 E-Field LAN Connectivity Feature in Future Models: Sending messages to other products C o m m s ADC Timing Functions } Ice and Frost Detection Up to 11 Electrodes I/O Display Panel Microcontroller I/O MC34927 Power IC BLDC NVM PWM I/O User information stored and managed here, e.g., shopping list Valve Compressor MC33289 Power IC Open Door Alarm Key Benefits > Provides quieter operation with improved power efficiency for refrigerators and freezers > Improves compressor control and brushless DC motor control while improving energy > Monitors moisture levels inside the appliance cavity > Monitor ice and frost formation with E-Field sensing Freescale Ordering InformationNote Part Number Product Highlights Additional Information DSP56F801 80 MHz, 40 MIPS, SCI, SPI, ADC, PWM, Quad Timer, and 8 K Program Flash; 1 K Program RAM, 2 K Data Flash, and 1 K Data RAM; MCU-Friendly Instruction Set; OnCE for Debug; On-Chip Relaxation Oscillator; 2 K BootFLASH; Up to 11 GPIO Available in a 48-Pin LQFP www.freescale.com DSP56F802 80 MHz, 40 MIPS, SCI, SPI, ADC, PWM, Quad Timer, and 8 K Program Flash; 1 K Program RAM, 2 K Data Flash, and 1 K Data RAM; MCU-Friendly Instruction Set; OnCE for Debug; On-Chip Relaxation Oscillator, 2 K BootFLASH; Up to 4 GPIO Available in a 32-Pin LQFP DSP56F803 80 MHz, 40 MIPS, CAN, SCI, SPI, ADC, PWM, Quad Timer, and 8 K Program Flash; 1 K Program RAM, 2 K Data Flash, and 1 K Data RAM; MCU-Friendly Instruction Set; OnCE for Debug; On-Chip Relaxation Oscillator; 2 K BootFLASH; Up to 16 GPIO Available in a 100-Pin LQFP MC33289 Dual High-Side Switch for Inductive Loads, 2 x 40 mΩ MC33794 Electric Field Imaging Device 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 MC34927 Three Phase FET Pre-Driver MC56F8122 40 MHz, 40 MIPS, 40 KB Flash, and 8 KB RAM with 2 SPI, 2 SCI, ADC, COP, PLL, 2 Quad Timers; MCU-Friendly Instruction Set; Enhanced OnCE for Debug; Industrial (-40°C to 105°C) with Up to 21 GPIOs in a 48-Pin LQFP MC56F8123 40 MHz, 40 MIPS, 48 KB Flash, and 8 KB RAM with 2 SPI, 2 SCI, ADC, COP, PLL, 2 Quad Timers; MCU-Friendly Instruction Set; Enhanced OnCE for Debug; Industrial (-40°C to 105°C) with Up to 27 GPIOs in a 64-Pin LQFP MC56F8322 60 MHz, 60 MIPS, 48 KB Flash, and 12 KB RAM with 2 SPI, 2 SCI, 2 ADC, PWM, COP, PLL, Decoder, 2 Quad Timers, FlexCAN™; MCU-Friendly Instruction Set; Enhanced OnCE for Debug; On-Chip Relaxation Oscillator; Temperature Sensor; Industrial (-40°C to 105°C) and Extended (-40°C to 125°C) Temperature Ranges with Up to 21 GPIOs in a 48-Pin LQFP MC56F8323 60 MHz, 60 MIPS, 48 KB Flash, and 12 KB RAM with 2 SPI, 2 SCI, 2 ADC, PWM, COP, PLL, Decoder, 2 Quad Timers, FlexCAN™; MCU-Friendly Instruction Set; Enhanced OnCE for Debug; On-Chip Relaxation Oscillator; Temperature Sensor; Industrial (-40°C to 105°C) and Extended (-40°C to 125°C) Temperature Ranges with Up to 27 GPIOs in a 64-Pin LQFP. MC56F801x Family Up to 32 MHz, 32 MIPS, and up to 16 KB Flash; 4 KB Unified Data/Program RAM; EEPROM Emulation Capability; SCI with LIN, SPI, I2C, ADC, PWM, GPIO, COP/Watchdog, MCU-Style Software Stack Support, JTAG/OnCE for Debug MC68HC(9)08AZxx ADC, SCI, SPI, CAN, EEPROM MC68HC908MRxx ADC, PWM, SCI, SPI MC68HC(9)08ABxx ADC, SCI, SPI, EEPROM MC68HC(9)08GPxx ADC, SCI, SPI MC68HC(9)08GTxx ADC, SCI, SPI, ICG MC68HC908GRxx ADC, SCI, SPI MC68HC(9)08JLxx ADC MC68HC(9)08JKxx ADC MC68HC908KXxx ADC, SCI MC68HC908Qxx Low Pin Count, Low Cost www.freescale.com/analog 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 SG2038-2 year while recent products are displayed. This means software problems must be eliminated quickly, which requires professional development tools and faster, more efficient development cycles. Legislation Energy efficiency regulations are driving manufacturers to redesign their products to meet global legislative demands. Measurement Accuracy Measuring temperatures in different interior zones of the refrigerator and freezer is critical to its performance. For example, the vegetable drawer should be a different temperature than the dairy shelf. 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 • In-application programming, which reduces time to market Embedded Flash brings new flexibility to your designs: • Improves time to market, which reduces lead times • Provides end-of-line customization for regional variations in consumer demands • Standardizes platforms, which reduces product variability • 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 • Improved write/erase and data retention performance for Flash • Flexible block protection and security • Emulation of EEPROM by Flash • Eliminates sockets and rework with in-system programmable Flash • Provides field upgrade capability while allowing remote reprogramming of the microcontroller • Eliminates the need for external EEPROM with 10,000 write/erase cycles because Flash can emulate EEPROM • Reduces obsolescence, which saves on scrapped product costs Development Tools Note Tool Type Product Name Vendor Description Additional Information Software CW568X Freescale Semiconductor CodeWarrior™ Development Studio for 56800/E Controllers with Processor Expert (Metrowerks) www.freescale.com Software CWHC08 Metrowerks CodeWarrior Full Package for HC08 www.metrowerks.com Software CWHC08ASM Metrowerks CodeWarrior ASM Tools for HC08 Software CWHC08CC Metrowerks Stand-Alone C/C++/cC++/EC++ Compiler for HC08 Software CWHC08MIG Metrowerks CodeWarrior Full Package for HC08 Migration Hardware 56F800DEMO Freescale Semiconductor 56F800 Demonstration Kit 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 Hardware DEMO56F8013 Freescale Semiconductor Demonstration Kit for the 56F8013 Hardware DEMO56F8014 Freescale Semiconductor Demonstration Kit for the 56F8014 Hardware DSP56F801EVM Freescale Semiconductor Evaluation Module for 56F801 and 56F802 Hardware DSP56F803EVM Freescale Semiconductor Evaluation Module for 56F803 Hardware MC56F8300DSK Freescale Semiconductor 56F8300 Developers Start Kit Hardware MC56F8323EVM Freescale Semiconductor Evaluation Module for 56F8322 and 56F8323 Evaluation Kit KIT33289DWEVB Metrowerks Automotive Dual High-Side Switch Evaluation Kit KIT33794DWBEVM Metrowerks Electric Field Sensing Device Evaluation Kit KIT33993DWBEVB Metrowerks 22 Input Multiple Switch Detection Interface Development In-Circuit Simulator (ICS) Kits Freescale Semiconductor Low-Cost Tools for Developing and Debugging Target Systems Incorporating 68HC08 MCUs Development Modular Evaluation System (MMEVS) Kits Freescale Semiconductor Economical, Two-Board Emulator for the 68HC(9)08 MCUs Development Modular Development System (MMDS) Kits Freescale Semiconductor Full-Featured Emulator System for Developing Embedded Systems Using 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 Note: Search on the listed product name. SG2038-3 www.freescale.com www.metrowerks.com www.freescale.com Related DocumentationNote Document Number Description Additional Information 816PITCHPAK03 MCU 8- and 16-Bit Sales Binder www.freescale.com APDPAK Analog ICs Integrated Solutions Pitch Pack 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 Note: Search on the listed document number 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. SG2038 REV 4 6/2005 June2005