68HC705JJ7|8-bit Microcontroller (MCU) | NXP Semiconductors

For best experience this site requires Javascript to be enabled. To enable on your browser, follow our accessibility instructions.

Roll over image to zoom in

The NXP^® MC68HC705JJ7 is a member of the M68HC05JJ and M68HC705JP Families of microcontrollers. All MCUs in the family use the popular M68HC05 central processor unit (CPU) and are available with a variety of subsystems, memory sizes and types, and package types.

Data Sheet

Reference Manual

Buy/Parametrics

‌ ‌ ‌	‌ ‌	‌ ‌	‌ ‌	‌ ‌	‌ ‌
‌ ‌ ‌	‌	‌	‌	‌	‌
‌ ‌ ‌	‌	‌	‌	‌	‌
‌ ‌ ‌	‌	‌	‌	‌	‌
‌ ‌ ‌	‌	‌	‌	‌	‌
‌ ‌ ‌	‌	‌	‌	‌	‌
‌ ‌ ‌	‌	‌	‌	‌	‌
‌ ‌ ‌	‌	‌	‌	‌	‌
‌ ‌ ‌	‌	‌	‌	‌	‌
‌ ‌ ‌	‌	‌	‌	‌	‌
‌ ‌ ‌	‌	‌	‌	‌	‌

Design Resources

Design Files

Receive the full breakdown. See the product footprint and more in the eCad file.

Software

Quick reference to our software types.

5 software files

Code Snippets
Example routines

ZIPRev 0Oct 5, 202041.3 KBSAMPPROGCOD

Account Required
DownloadToggle Dropdown
- Add to Queue
- Remove from Queue
- Recommended for large file sizes.
- View Queue
Code Snippets
HC05 Software Example: Home Thermostat example using the 705C8 with indoor/outdoor temperature and time of day

ZIPRev 0Oct 5, 202017.2 KBC8THERMSW

Account Required
DownloadToggle Dropdown
- Add to Queue
- Remove from Queue
- Recommended for large file sizes.
- View Queue
Code Snippets
DOS based freeware assembler

ZIPRev 0Aug 6, 200261.0 KBASHC5ASM

Account Required
DownloadToggle Dropdown
- Add to Queue
- Remove from Queue
- Recommended for large file sizes.
- View Queue
Libraries
IEC 60730 Safety Standard for Household Appliances

Download Options
Debugging and Visualization Tools
FreeMASTER Run-Time Debugging Tool

Download Options

Note: For better experience, software downloads are recommended on desktop.

Shopping cart

8-bit Microcontroller (MCU)

Buy/Parametrics

Documentation

Filter by

Application Note (43)

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]

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

Digital Direct Current Ignition System Using HC08 Microcontrollers[AN2159]

A/D Conversion Software for the MC68HC05JJ/JP Series Microcontrollers[AN1739]

Data Structures for 8-Bit Microcontrollers[AN1752]

Low Cost Universal Motor Phase Angle Drive System[AN1662]

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]

Noise Reduction Techniques for Microcontroller-Based Systems[AN1705]

Software I2C Communications[AN1820]

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

Low Cost Universal Motor Sensorless Phase Angle Drive System[AN1663]

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

In-Circuit and Emulation Considerations for MC68HC05JJ/JP Series Microcontrollers[AN1741]

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

Instruction Cycle Timing of MC68HC05JJ/JP Series Microcontrollers[AN1738]

Add Addressable Switches to the HC05[AN1758]

Applications Using the Analog Subsystem on MC68HC05JJ/JP Series Microcontrollers[AN1740]

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]

Single-Slope Analog-to-Digital (A/D) Conversion[AN1708]

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)

MC68HC705JP7, MC68HC705SJ7, MC68HC705SP7, MC68HRC705JJ7, MC68HRC705JP7, Advance Information - Data Sheet[MC68HC705JJ7]

Errata (3)

68HC705JJ7 8-Bit Microcontroller Unit: Mask Set Errata 3 - Errata[68HC705JJ7MSE3]

68HC705JJ7MSE2AD/D Device Information Sheet: 0H70H/1H70H Mask Sets[68HC705JJ7MSE2]

68HC705JJ7 Device Information Sheet: G58T Mask Sets[68HC705JJ7MSE1]

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]

Filter by