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The MC68HC705X32 microcomputer (MCU) is a member of Our MC68HC05 family of low-cost single chip microcomputers. This 8-bit MCU contains an on-board controller area network module (MCAN), complete with interface circuitry, comprising output drivers, input comparators and a V DD /2 generator. In addition, the device contains an on-chip oscillator, CPU, RAM, ROM, EEPROM, A/D converter, pulse length modulated outputs, I/O, serial communications interface, programmable timer system and watchdog. The fully static design allows operation at frequencies down to dc, reducing power consumption to a few micro-amps.

Data Sheet

Reference Manual

Documentation

Quick reference to our documentation types

1-10 of 52 documents

Compact List

Software SCI Routines with the 16-Bit Timer Module[AN1818]

PDFNov 22, 2004Rev 1
Migrating from the MC68HC705K1 to the MC68HC705KJ1[AN1746]

PDFNov 10, 2003Rev 0
MISC Bus Follower Switch Node[AN1688]

PDFJul 11, 2002Rev 0
Software SCI Implementation to the MISC Communication Protocol[AN1667]

PDFJul 10, 2002Rev 0
Pulse Generation and Detection with Microcontroller Units[AN1067]

PDFMay 31, 2002Rev 1
Using the Serial Peripheral Interface to Communicate Between Multiple Microcomputers[AN991]

PDFJan 28, 2002Rev 1
Digital Direct Current Ignition System Using HC08 Microcontrollers[AN2159]

PDFNov 20, 2001Rev 0
CAN bit timing requirements[AN1798]

PDFJun 1, 2001Rev 4
Local Interconnect Network (LIN) Demonstration[AN2103]

PDFDec 1, 2000Rev 0
Designing for Electromagnetic Compatibility (EMC) with HCMOS Microcontrollers[AN1050]

PDFJan 1, 2000Rev 0
Noise Reduction Techniques for Microcontroller-Based Systems[AN1705]

PDFJan 1, 1999Rev 0
Software I2C Communications[AN1820]

PDFJan 1, 1999Rev 0
Expanding Digital Input with an A/D Converter[AN1775]

PDFJan 1, 1998Rev 1
Add a Unique Silicon Serial Number to the HC05[AN1757]

PDFJan 1, 1998Rev 0
Precision Sine-Wave Tone Synthesis Using 8-Bit MCUs[AN1771]

PDFJan 1, 1998Rev 0
Add Addressable Switches to the HC05[AN1758]

PDFJan 1, 1998Rev 0
Resetting Microcontrollers During Power Transitions[AN1744]

PDFJan 1, 1998Rev 0
Pulse Width Modulation Using the 16-Bit Timer[AN1734]

PDFJan 1, 1998Rev 0
Interfacing the HC705C8A to an LCD Module[AN1745]

PDFJan 1, 1998Rev 0
Interfacing MC68HC05 Microcontrollers to the IBM AT Keyboard Interface[AN1723]

PDFOct 30, 1997Rev 0
Let the MC68HC705 Program Itself[AN499]

PDFJul 1, 1996Rev 0
Adding a Voice User Interface to M68HC05 Applications[AN1292]

PDFJan 1, 1996Rev 0
Designing for Electromagnetic Compatibility with Single-Chip Microcontrollers[AN1263]

PDFJan 1, 1995Rev 0
Simple Real-Time Kernels for M68HC05 Microcontrollers[AN1262]

PDFJan 1, 1995Rev 0
AN1259: System Design and Layout Techniques for Noise Reduction in MCU-Based Systems – Application Note[AN1259]

PDFJan 1, 1995Rev 0
MC68HC05SR3 and MC68HC705SR3 Design Notes[AN-HK-22]

PDFJan 1, 1994Rev 0
MC6805R3 and MC68HC05SR3 Technical Comparison[AN-HK-23]

PDFJan 1, 1994Rev 0
Simple A/D for MCUs without Built-In A/D Converters[AN477]

PDFJan 1, 1993Rev 0
Software Driver Routines for the MC68HC05 CAN Module[AN464]

PDFJan 1, 1993Rev 0
Arithmetic Waveform Synthesis with the HC05/08 MCUs[AN1222]

PDFJan 1, 1993Rev 0
68HC05K0 Infra-red Remote Control[AN463]

PDFJan 1, 1992Rev 0
Driving LCDs with M6805 Microprocessors[AN442]

PDFJan 1, 1991Rev 0
M6805 16-Bit Support Macros[AN1055]

PDFJan 1, 1990Rev 0
MC68HC05B4 Radio Synthesizer[ANE416]

PDFJan 1, 1988Rev 0

Software for AN1667, zip format[AN1667SW]

ZIPJul 31, 2002Rev 1.0
AN2159SW[AN2159SW]

ZIPMar 8, 2002Rev 1
Software files for AN1820 zipped[AN1820SW]

ZIPJan 1, 1998Rev 0
Software files for AN1734 zipped[AN1734SW]

ZIPJan 1, 1997Rev 0
Software files for AN1292 zipped[AN1292SW]

ZIPJan 1, 1996Rev 0
Software Files for AN1222 zipped[AN1222SW]

ZIPJan 1, 1995Rev 0
Software files for AN1262[AN1262SW]

ZIPJan 1, 1995Rev 0

MC68HC05X32, MC68HC705X32 TECHNICAL DATA - Data Sheet[MC68HC05X16]

PDFJan 1, 1997Rev 1

68HC705X32 Device Information Sheet: D40J-G47V Mask Sets[68HC705X32MSE1]

PDFJan 21, 1997Rev 0

M68HC05 Applications Guide[M68HC05AG]

PDFJan 28, 2003Rev 4
MC68HC05C4, C8, C9, MC68HC705C8, MC68HC805C4, MC68HCL05C4, C8, MC68HSC05C4, C8 Programming Reference[MC68HC05CXRG]

PDFFeb 23, 2000Rev 1
HC05 Family - Understanding Small Microcontrollers[M68HC05TB]

PDFJan 1, 1998Rev 2

Use of OSC2/XTAL as a Clock Output on Freescale Semiconductor Microcontrollers[EB396]

PDFJun 19, 2002Rev 0
RAM Data Retention Considerations for Freescale Semiconductor Microcontrollers[EB349]

PDFJun 22, 2000Rev 1
The MCAN Module[EB421]

PDFFeb 23, 2000Rev 0
Resetting MCUs[EB413]

PDFJan 1, 2000Rev 0
Frequently Asked Questions and Answers for the M68HC05 Family MCAN Module[EB181]

PDFJan 1, 1997Rev 0
Differences between the MC68HC705B16 and the MC68HC705B16N[EB180]

PDFJan 1, 1996Rev 0

Design Resources

Design Files

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1 design file

Models
Core Model M68EML05X32

ZIPRev 1Oct 26, 2006 00:00:0046.99 KBM68EML05X32
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Software

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3 software files

Code Snippets
Example routines

ZIPRev 0Oct 5, 2020 10:19:0040.34 KBSAMPPROGCOD

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Code Snippets
HC05 Software Example: Home Thermostat example using the 705C8 with indoor/outdoor temperature and time of day

ZIPRev 0Oct 5, 2020 10:19:0016.82 KBC8THERMSW

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Code Snippets
DOS based freeware assembler

ZIPRev 0Aug 6, 2002 00:00:0059.55 KBASHC5ASM

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Microcontroller

Documentation

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Application Note (34)

Software SCI Routines with the 16-Bit Timer Module[AN1818]

Migrating from the MC68HC705K1 to the MC68HC705KJ1[AN1746]

MISC Bus Follower Switch Node[AN1688]

Software SCI Implementation to the MISC Communication Protocol[AN1667]

Pulse Generation and Detection with Microcontroller Units[AN1067]

Using the Serial Peripheral Interface to Communicate Between Multiple Microcomputers[AN991]

Digital Direct Current Ignition System Using HC08 Microcontrollers[AN2159]

CAN bit timing requirements[AN1798]

Local Interconnect Network (LIN) Demonstration[AN2103]

Designing for Electromagnetic Compatibility (EMC) with HCMOS Microcontrollers[AN1050]

Noise Reduction Techniques for Microcontroller-Based Systems[AN1705]

Software I2C Communications[AN1820]

Expanding Digital Input with an A/D Converter[AN1775]

Add a Unique Silicon Serial Number to the HC05[AN1757]

Precision Sine-Wave Tone Synthesis Using 8-Bit MCUs[AN1771]

Add Addressable Switches to the HC05[AN1758]

Resetting Microcontrollers During Power Transitions[AN1744]

Pulse Width Modulation Using the 16-Bit Timer[AN1734]

Interfacing the HC705C8A to an LCD Module[AN1745]

Interfacing MC68HC05 Microcontrollers to the IBM AT Keyboard Interface[AN1723]

Let the MC68HC705 Program Itself[AN499]

Adding a Voice User Interface to M68HC05 Applications[AN1292]

Designing for Electromagnetic Compatibility with Single-Chip Microcontrollers[AN1263]

Simple Real-Time Kernels for M68HC05 Microcontrollers[AN1262]

AN1259: System Design and Layout Techniques for Noise Reduction in MCU-Based Systems – Application Note[AN1259]

MC68HC05SR3 and MC68HC705SR3 Design Notes[AN-HK-22]

MC6805R3 and MC68HC05SR3 Technical Comparison[AN-HK-23]

Simple A/D for MCUs without Built-In A/D Converters[AN477]

Software Driver Routines for the MC68HC05 CAN Module[AN464]

Arithmetic Waveform Synthesis with the HC05/08 MCUs[AN1222]

68HC05K0 Infra-red Remote Control[AN463]

Driving LCDs with M6805 Microprocessors[AN442]

M6805 16-Bit Support Macros[AN1055]

MC68HC05B4 Radio Synthesizer[ANE416]

Application Note Software (7)

Software for AN1667, zip format[AN1667SW]

AN2159SW[AN2159SW]

Software files for AN1820 zipped[AN1820SW]

Software files for AN1734 zipped[AN1734SW]

Software files for AN1292 zipped[AN1292SW]

Software Files for AN1222 zipped[AN1222SW]

Software files for AN1262[AN1262SW]

Data Sheet (1)

MC68HC05X32, MC68HC705X32 TECHNICAL DATA - Data Sheet[MC68HC05X16]

Errata (1)

68HC705X32 Device Information Sheet: D40J-G47V Mask Sets[68HC705X32MSE1]

Reference Manual (3)

M68HC05 Applications Guide[M68HC05AG]

MC68HC05C4, C8, C9, MC68HC705C8, MC68HC805C4, MC68HCL05C4, C8, MC68HSC05C4, C8 Programming Reference[MC68HC05CXRG]

HC05 Family - Understanding Small Microcontrollers[M68HC05TB]

Technical Notes (6)

Use of OSC2/XTAL as a Clock Output on Freescale Semiconductor Microcontrollers[EB396]

RAM Data Retention Considerations for Freescale Semiconductor Microcontrollers[EB349]

The MCAN Module[EB421]

Resetting MCUs[EB413]

Frequently Asked Questions and Answers for the M68HC05 Family MCAN Module[EB181]

Differences between the MC68HC705B16 and the MC68HC705B16N[EB180]

Design Resources

Design Files

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Core Model M68EML05X32

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Software

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Example routines

HC05 Software Example: Home Thermostat example using the 705C8 with indoor/outdoor temperature and time of day

DOS based freeware assembler

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