68HC908MR32 : Microcontroller

 

This highly integrated 8-bit FLASH microcontroller specifically address the needs of the embedded designer concerned with electronic motion control. A 6-channel, 12-bit Pulse Width Modulator (PWMMC) not only provides the most comprehensive timer solution for AC motors but capitalizes on the similarities between various motor types and incorporates flexibility such that it may be configured for several drive topologies. The fault tolerant design of the PWMMC supports both center and edge-aligned modes with automatic dead-time insertion and patented dead-time compensation capability. With 32K of FLASH memory, strong analog integration including a 10-bit Analog to Digital Converter and a Low Voltage Inhibit module, multiple serial communication modules and up to 44 input/output pins, these devices will meet the needs of such varied applications as smart appliances, automotive sub-systems, industrial control and uninterruptable power supplies.

  • Block Diagram
    • Page Contents
    Other Info
    68HC908MR32 Features

    • High-performance M68HC08 architecture
    • Integrated Second Generation FLASH Memory
    • 12-bit Pulse Width Modulation for Motor Control
    • Analog to Digital Converter
    • Dual Programmable 16-bit Timers
    • Asynchronous Serial Communications Interface
    • Synchronous Serial Communications Interface
    • Computer Operating Properly Watchdog Timer
    • Selectable Trip Point Low Voltage Inhibit

     

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    68HC908MR32 Parametrics

    RAM
    Bytes
    Flash
    KBytes
    Timer
    I/O
    Serial
    A/D
    PWM
    Operating Voltage
    V
    Bus Frequency
    (Max)
    MHz
    768
    32
    4-CH + 2-CH 16-bit IC, OC, or PWM
    44
    SCI, SPI
    10 x 10-bit
    6 x 12-bit
    5.0
    8.0

     

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    68HC908MR32 Documentation

    Application Note
    ID Name Format Size K Rev # Date Last Modified
    AN1762 Automatic Contrast Control of LCD Displays Using the MC68HC708LN56 Microcontroller pdf 103 0 1/01/1998
    AN1711 DMA08 Systems Compatibilities pdf 305 0 1/01/1997
    AN1770 In-Circuit Programming of FLASH Memory in the MC68HC908GP20 pdf 403 1 1/01/1999
    AN2154 Low-Cost, 3-Phase, AC Motor Control System with Power Factor Correction Based on MC68HC908MR32 pdf 170 0 7/23/2001
    AN1798 CAN bit timing requirements pdf 73 4 6/01/2001
    AN1828 FLASH Programming Via CAN pdf 74 0 1/01/1999
    AN2105 Power-On, Clock Selection, and Noise Reduction Techniques for the Motorola MC68HC908GP32 pdf 220 0 1/01/2000
    AN2093 Creating Efficient C Code for the MC68HC08 pdf 35 0 1/01/2000
    AN1858 Sensorless Brushless dc Motor Using the MC68HC908MR32 Embedded Motion Control Development System pdf 194 0 6/22/2000
    AN1857 A 3-Phase ac Induction Motor Control System Based on the MC68HC908MR32 pdf 278 0 6/22/2000
    AN1853 Embedding Microcontrollers in Domestic Refrigeration Appliances pdf 216 0 6/22/2000
    AN1844 Using a 68HC908MR32 in Place of a 68HC908MR24 pdf 214 0 6/22/2000
    AN1843 Vacuum Cleaner Reference Platform pdf 326 0 9/13/2000
    AN1837 Non-Volatile Memory Technology Overview pdf 116 0 3/27/2000
    AN1831 Using MC68HC908 On-Chip FLASH Programming Routines ROM-Resident Routines in the MC68HC908GR8, MC68HC908KX8, MC68HC908JL3, MC68HC908JK3, and the MC68HC908JB8 pdf 294 1.0 9/11/2000
    AN1705 Noise Reduction Techniques for Microcontroller-Based Systems pdf 67 0 1/01/1999
    AN1057 Selecting the Right Microcontroller Unit pdf 241 0 1/01/2000
    AN1827 Programming and Erasing FLASH Memory on the MC68HC908AS60 pdf 352 0 1/01/1999
    AN1792 Using an MC68HC908MR24 in Place of an MC68HC708MP16 pdf 95 1 1/01/2000
    AN1748 Building a Universal Serial Bus Keyboard Hub Using the Motorola MC68HC(9)08KH12 pdf 139 0 1/01/1998
    AN1731 VPW J1850 Multiplexing and Motorola Byte Data Link Controller (BDLC) Module pdf 235 0 1/01/1998
    AN1728 Making Low-Distortion Motor Waveforms with the MC68HC708MP16 pdf 149 1 1/01/1997
    AN1712 Get Your Motor Running with the MC68HC708MP16 pdf 342 0 1/01/1997
    AN1664 Low Cost 3-Phase ac Motor Control System Based on MC68HC908MR24 pdf 540 0 1/01/1996
    AN1624 ITC137 68HC708MP16 Motion Control Development Board pdf 175 0 1/01/1997
    AN1274 HC08 SCI Operation with Various Input Clocks pdf 57 0 1/01/1996
    AN1221 Hamming Error Control Coding Techniques with the HC08 MCU pdf 73 0 1/01/1993
    AN1219 M68HC08 Integer Math Routines pdf 170 1 1/01/1997
    AN-HK-33 In-Circuit Programming of FLASH Memory in the MC68HC908JL3 pdf 69 1 3/27/2000
    AN-HK-32 In-Circuit Programming of FLASH Memory in the MC68HC908GP32 pdf 79 2.0 8/10/2000
    AN-HK-31 Using the MC68HC908GP32 in Place of MC68HC908GP20 pdf 942 0 1/01/1999
    AN1783 Determining MCU Oscillator Start-Up Parameters pdf 48 1 1/01/1999
    AN1771 Precision Sine-Wave Tone Synthesis Using 8-Bit MCUs pdf 250 0 1/01/1998
    AN1744 Resetting Microcontrollers During Power Transitions pdf 80 0 1/01/1998
    AN1752 Data Structures for 8-Bit Microcontrollers pdf 213 1 5/07/2001
    AN1775 Expanding Digital Input with an A/D Converter pdf 86 1 1/01/1998
    AN4006 Digital Captive Discharge Ignition System Using HC05/HC08 8-Bit Microcontrollers pdf 61 0 3/27/2000
    AN2103 Local Interconnect Network (LIN) Demonstration pdf 953 0 12/01/2000
    AN1743 Scrolling Message Software pdf 127 0 1/01/1998
    AN1263 Designing for Electromagnetic Compatibility with Single-Chip Microcontrollers pdf 104 0 1/01/1995
    AN1259 System Design and Layout Techniques for Noise Reduction in MCU-Based Systems pdf 78 0 1/01/1995
    AN1222 Arithmetic Waveform Synthesis with the HC05/08 MCUs pdf 26 0 1/01/1993
    AN1218 HC05 to HC08 Optimization pdf 347 2 1/01/1993
    AN1050 Designing for Electromagnetic Compatibility (EMC) with HCMOS Microcontrollers pdf 82 0 1/01/2000
    AN477 Simple A/D for MCUs without Built-In A/D Converters pdf 224 0 1/01/1993


    Data Sheets
    ID Name Format Size K Rev # Date Last Modified
    MC68HC908MR32 68HC908MR32, 68HC08MR16 Advance Information pdf 4283 1 6/01/2000


    Engineering Bulletin
    ID Name Format Size K Rev # Date Last Modified
    EB368 In-Circuit Programming of FLASH Memory Using the Monitor Mode for the MC68HC908GR8 pdf 176 1 1/11/2001
    EB370 In-Circuit Programming of FLASH Memory Using the Monitor Mode for the MC68HC908MR16/32 pdf 204 1 5/07/2001
    EB369 In-Circuit Programming of FLASH Memory Using the Monitor Mode for the MC68HC908KX2/8 pdf 183 1 5/07/2001
    EB367 In-Circuit Programming of FLASH Memory Using the Monitor Mode for the MC68HC908JL/JK pdf 316 0 10/13/2000
    EB366 In-Circuit Programming of FLASH Memory Using the Monitor Mode for the MC68HC908GP32 pdf 294 0 10/13/2000
    EB349 RAM Data Retention Considerations for Motorola Microcontrollers pdf 45 0 6/22/2000


    Reference Manual
    ID Name Format Size K Rev # Date Last Modified
    CPU08RM CPU08RM Central Processor Unit Reference Manual pdf 2342 3 3/19/2001
    CPU08RMAD CPU08 Reference Manual Addendum pdf 234 0 1/01/1995
    TIM08RM TIM08 Timer Interface Module Reference Manual pdf 771 1.0 1/10/1996
    TIM08RMAD TIM08 Timer Interface Module Reference Manual Addendum pdf 557 0 1/01/1995
    DMA08RM Direct Memory Access Reference Manual pdf 463 1 2/23/2000
    DRM002 USB08 Universal Serial Bus Evaluation Board Using the MC68HC908JB8 Designer Reference Manual pdf 1845 0 4/12/2001
    DRM001 Passive Infrared (PIR) Intruder Detection Using the MC68HC908JK1/3, Incorporating Remote Control Adjustment Using the MC68HC908GP32 pdf 2504 0 2/20/2001
    M68HC08RG HC08 Family Reference Guide pdf 3374 1 2/23/2000
    M68HC08RGAD Addendum to HC08 Family Reference Guide, Revision 1 pdf 686 0 2/23/2000


    Selector Guide
    ID Name Format Size K Rev # Date Last Modified
    SG188 Microcontroller Development Tool Configuration and Order Information Selector Guide pdf 154 2 1/01/2001
    SG186 Microcontroller Selector Guide Quarter 3, 2001 pdf 490 8 6/29/2001

     

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    68HC908MR32 Boards/Reference Designs

    ID Name
    ICS0508 8-bit ICS Development Tool Kit
    M68MMDS0508 MMDS0508 Modular Development System
    M68MMPFB0508 MMEVS Modular Evaluation System

     

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    68HC908MR32 Orderable Parts

    Orderable Part ID Package Info Status Remarks
    KMC908MR32VB Shrink DIP (70 mil spacing) Active - Production Part -40 to +105 C
    MC68HC908MR32CB 56 SDIP Active - Pre-Production -
    MC68HC908MR32VB 56 SDIP Active - Pre-Production -
    KMC908MR32VFU 20x20 mm Plastic Quad Flat Pack (QFP) Active - Production Part -40 to +105 C
    MC68HC908MR32CFU 64 QFP Active - Pre-Production -
    MC68HC908MR32VFU 64 QFP Active - Pre-Production -

     

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