68HC11:  EVBplus3 Development Board
(Code Name: Husky11-USB)



  Warning:  We now ship the Husky11 trainer without the EEPROM, 28C256, installed.  The EEPROM, 28C256, in DIP package has been discontinued by IC manufacturers.  There is no replacement available.

Example applications:

  • EVM, EVS replacement
  • 68HC11 Trainer for students
  • 68HC11 prototype platform for engineers
  • Single Chip Real Time Emulation for the 68HC711E9, E20
  • 68HC11 SBC, Single Board Computer

The Husky11-USB board is very similar to the original Motorola EVB board in terms of the PCB component layout, thus allowing a smooth transition for upgrading the old EVB board. All users’ EVB/EVBU/EVBU2 add-on boards can also be used without any modifications. A small solderless breadboard allows quick prototyping of user’s additional circuits.

All 68HC11 I/O lines (PA0-PA7, PB0-PB7, PC0-PC7, PD0-PD5, PE0-PE7) on the Husky11-USB board are available to user programs. Port B and port C are emulated by 68HC24 PRU. We also added a 65C22 VIA to offer 16 more bi-direction I/O lines (port F and G) for keypad and LCD applications.

Husky11 features:

  • USB interface based on the flawless FT232RL for all Windows O/S
  • On-board RGB piranha color LED
  • On-board 4 X 4 keypad
  • Speaker driven by timer, or DAC for alarm, voice and music applications
  • DPDT form C relay
  • Temperature sensor for home automation applications
  • Light sensor for home automation applications
  • Dual H-Bridge for controlling two DC motors or one Stepper motor
  • Four robot servo outputs with a terminal block for external 5V 
  • Dual 10-bit DAC for testing SPI interface and generating analog waveforms
  • Real Time Clock DS1302 with battery
  • Free 9V 500mA switching power supply AC adapter for US and Canadian orders
  • 68HC11E1 with on-board 32K RAM
  • RS485 communication port with terminal block for daisy chaining
  • On-board 16X2 LCD display module with LED backlight and it can be replaced by any size of LCD display module via a 16 pin cable assembly
  • On-board 4 digit seven segment display module
  • Dual serial ports, 68HC11’s SCI is available for user application programs
  • Eight LEDs connected to port B
  • An 8 position DIP switch connected to port C
  • Four push button switches connected to PC0, PC1, PC2 and PA0
  • On-board IR transceiver with built-in crystal frequency based 38KHz digital oscillator
  • On-board speaker for music applications
  • On-board potentiometer trimmer pot for analog input
  • 68HC24 port replacement unit for port B and C in real time single chip emulation
  • Additional 16 I/O lines provided by a 65C22 VIA for keypad and LCD applications
  • 30K on-board RAM from $8800 to $FFFF for user code
  • All on-chip RAM $00-$1FF, and 512 bytes of EEPROM available for user program
  • All I/O pins of the 68HC11 available to user program, including PE0 and PA3
  • Installed with BUFFALO 4.0 monitor. This allows professors to avoid changing teaching material if using the board in BUFFALO monitor mode, since all programs for EVB/EVBU/EVBU2 boards can run with identical memory maps
  • Debugging features
  • of Wytec phantom monitor
    • Built-in LCD driver software in firmware
    • Works as a WICE emulator without hardware breakpoint features
    • Read internal ROM code of the 68HC711E9 and disassemble it for reverse engineering
    • 38.4K baud for fast file download, 4 time faster than a BUFFALO monitor based board
    • Single-stepping
    • Eight breakpoints
    • Data watch for memory and registers
    • User-friendly and interactive 68HC11 online assembler
    • Display 68HC11 internal registers and control bit assignment map using standard Motorola labels
    • Symbolic debugging compatibility with most assemblers and compilers, including Motorola 68HC11 assembler freeware
    • Exit a user program with <Esc> key - even if the program is hung
    • Phantom Monitor technology preserves all user interrupt vectors, including RESET - an EVBplus exclusive
  • Logic probe with LED indicator
  • Fast SPI expansion port scans 10,000 I/O devices per second
  • Auto start user program after power on
  • 40 pin Motorola EVM compatible bus signal connector for logic analyzer
  • 60 pin EVB/EVBU/EVBU2 compatible male header and female socket connector for user I/O boards and fast prototyping with the on-board solderless breadboard
  • Ability to run all sample programs in the following books:
    • "Etcheverry’s Introduction to the 68HC11 Lab Manual" by Fred Etcheverry
    • "The 68HC11 Microcontroller" by Professor Joseph D. Greenfield
    • "MC68HC11 An Introduction Software and Hardware Interface" by Professor Han-Way Huang
    • "Microcomputer Engineering" by Professor Gene H. Miller
    • "Using the M68HC11 microcontroller: A guide to interface and programming" by Professor John C. Skroder
    • "Microcontroller Technology: The 68HC11" by Professor Peter Spasov
  • Package also includes useful software:
    • Fully debugged 68HC11 program examples including source code
    • Example program that simultaneously scans keypad, plays a song, multiplexes seven segment display, changes display brightness by adjusting trimmer pot and detects object by using IR transceiver as a proximity sensor
    • Eric Engler’s AsmIDE software
  • Includes Solderless breadboard.
  • Large size PC board: 8.5" X 5.4"
  • USB cable for connecting to a PC USB port

The price of the Husky11 kit for students and schools is $199.00.

The price includes the Husky11 board, a solderless breadboard and a 6 foot USB cable.
For US and Canadian orders we will also include a 9V 500mA switching power supply AC adapter at no extra cost.

The board comes with everything on the above picture. All on-board I/O devices can be disabled if the board is used as an MC68HC711E9 In-Circuit Emulator for user’s target board. The emulator cable assembly will be sold as an option.

The crystal of the 68HC11 on the board is removable. An 8 MHz crystal is included with the board. To change the 68HC11 operating frequency is merely to replace the 8 MHz crystal with a new one. -

You can tackle many more complex projects with the Husky11 board for your senior projects in real world applications. The possible advanced applications with this board include, but are not limited to:

Robot Applications
Home Automation via X10 or RS485 interface
Home Security System
Fingerprint Access Control
Electronic Voting Machine via RS485 interface
Personal Alarm Clock
Personal Weather Station
Voice Processing Applications ( Voice Recorder and Voice Recognition System )
Industrial control and Instrumentation Applications
Metal Detector and Ultrasonic Motion Detector Applications
Eight Channel Christmas Light Chaser
DC Motor Speed Control
Stepper Motor Control
Telephone DTMF tone Remote Control
Infrared Remote Control
RF wireless Remote Control System with external RF transceiver module


  1. What is the WICE debugger and Phantom monitor, anyway?

  2. Take the Motorola EVB board as an example, you run PC terminal software to debug by sending commands to the BUFFALO monitor. The WICE debugger software is like a PC terminal program with many features – data watch, symbolic debugging, and easy to use on-line assembler, just to name a few. The Phantom monitor firmware in the Husky11-USB board is like the BUFFALO monitor in the Motorola EVB board. Normally the phantom monitor address range is $7000-$7FFF, but is $E000-$FFFF during power-up. The reason it is called Phantom Monitor is that it has a ghost address range at $E000-$FFFF during power up.

  3. What’s the purpose of the RS485?

    The RS485 on the Husky11-USB board is a standard communication interface port and it can communicate with any system that has a RS485 port. It could communicate a PC, a SBC or another Husky11-USB board, as long as it has a RS485 interface port. It’s mainly used in a long distance communication up to 5000 feet. If a professor uses his Husky11-USB board as the master units and daisy chain all students board as the slave units, he/she can collect some information from students' boards in the classroom electronically in real-time.

    If you have to debug a RS485 or RS232 based network product, instead of purchasing many emulators for every node, you can save a lot of money by using the Husky11 boards.

  4. How does the board communicate with a PC?

  5. Just like the Motorola EVB, the board uses the UART 68B50 to communicate with a PC Com port for debugging code, so the 68HC11’s SCI can be used by user programs. The 68HC11’s SCI can be configured to a user serial port or an RS485 port or an IR port. The user serial port is available at the header J33 in TTL logic level. The RS485 port is available at the terminal block T1, so you can daisy chain many boards together to make a control system which has one master unit that talks to many slave units. The IR port is represented by the 38KHz IR transmitter (located next to the terminla block T4 at the bottom edge of the PC board) and the IR detector (located next to the trimmer pot and at the bottom edge of the PC board).

  6. Which board to buy, Fox11 or Husky11-USB?

    The Fox11 board runs in expanded mode, without the 68HC24. The port B and C are used for address and data buses. You can use the Port A, D and E of the 68HC11, except the PA3, PD0-PD1 and PE0. If you think it is acceptable, you can buy the Fox11 board for $124.00. However, if you have some applications that need to emulate the port B and C, it might be a better idea to pay extra for the Husky11-USB board, not to mention the fact that you would get lot more hardware features. If you are a student, we recommend the Husky11-USB board, the extra cost is well worth it and you will gain much more 68HC11 programming knowledge and experience.

    If you use the board as a particular production tester, which performs a fixed function, the Fox11 board might be a better choice due to the low cost.

    If you are a software consultant who develops many products based on the 68HC11, we recommend the Husky11-USB board.

    If you are a software consultant who has to write software for different microcontrollers, but you are much more familiar with the HC11 controller than others, then you can use the Husky11-USB board to develop demo software on the 68HC11 only. When all specifications are agreed upon, you can change the coding for the actual microcontroller.

  7. Is there another option?

    There were many great 68HC11 EVBs as the follows:
    The popular Marvin Green’s Botboard. 
    The popular Kevin Ross's Botboard-Plus. 
    The famous Pete Dunster’s 68HC11F1 development board.
    The Dr. Fred Martin’s Handy Board.
    The original Motorola EVB and EVM system

    Unfortunately all of those products have been discontinued, but we have been continuously improving and supporting our 68HC11 trainers.