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The MC68HC705SR3 is an EPROM version of the MC68HC05SR3, which is a member of the M68HC05 family of low-cost single-chip microcontrollers. This 8-bit microcontroller unit (MCU) contains on-chip oscillator, CPU, RAM, ROM, I/O, Timer, and Analog-to-Digital Converter. The MC68HC05SR3 is pin compatible with the MC6805R3 and is provided as a low power upgrade path for MC6805R3 applications. The low power advantage of CMOS is combined with the addition of I/O and port modifications which help eliminate external components in cost sensitive applications. The MC68HC705SR3 is available in windowed and OTP packages. All refrences to the MC68HC05SR3 apply equally to the MC68HC705SR3, unless otherwise stated.

Data Sheet

Reference Manual

Documentation

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1-10 of 40 documents

Compact List

AN1516 Liquid Level Control Using a Pressure Sensor[AN1516]

PDFMay 16, 2005Rev 4
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
Digital Direct Current Ignition System Using HC08 Microcontrollers[AN2159]

PDFNov 20, 2001Rev 0
Data Structures for 8-Bit Microcontrollers[AN1752]

PDFMay 7, 2001Rev 1
Local Interconnect Network (LIN) Demonstration[AN2103]

PDFDec 1, 2000Rev 0
Digital Captive Discharge Ignition System Using HC05/HC08 8-Bit Microcontrollers[AN4006]

PDFMar 27, 2000Rev 0
Designing for Electromagnetic Compatibility (EMC) with HCMOS Microcontrollers[AN1050]

PDFJan 1, 2000Rev 0
Software I2C Communications[AN1820]

PDFJan 1, 1999Rev 0
Noise Reduction Techniques for Microcontroller-Based Systems[AN1705]

PDFJan 1, 1999Rev 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
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
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
Simple Real-Time Kernels for M68HC05 Microcontrollers[AN1262]

PDFJan 1, 1995Rev 0
Designing for Electromagnetic Compatibility with Single-Chip Microcontrollers[AN1263]

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

PDFJan 1, 1995Rev 0
Simple A/D for MCUs without Built-In A/D Converters[AN477]

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

PDFJan 1, 1993Rev 0
M6805 16-Bit Support Macros[AN1055]

PDFJan 1, 1990Rev 0

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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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Application Note (29)

AN1516 Liquid Level Control Using a Pressure Sensor[AN1516]

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]

Digital Direct Current Ignition System Using HC08 Microcontrollers[AN2159]

Data Structures for 8-Bit Microcontrollers[AN1752]

Local Interconnect Network (LIN) Demonstration[AN2103]

Digital Captive Discharge Ignition System Using HC05/HC08 8-Bit Microcontrollers[AN4006]

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

Software I2C Communications[AN1820]

Noise Reduction Techniques for Microcontroller-Based Systems[AN1705]

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

Add Addressable Switches to the HC05[AN1758]

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

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

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]

Simple Real-Time Kernels for M68HC05 Microcontrollers[AN1262]

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

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

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

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

M6805 16-Bit Support Macros[AN1055]

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)

MC68HC05SR3, MC68HC705SR3 Technical Data - Data Sheet[MC68HC05SR3D]

Errata (1)

68HC705SR3 Device Information Sheet: 1F10W Mask Set[68HC705SR3MSE3]

Reference Manual (1)

M68HC05 Applications Guide[M68HC05AG]

Technical Notes (1)

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

Design Resources

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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