M68HC11 Datasheet, PDF (332/336 Pages) Motorola, Inc – Technical Data

Engineering Bulletin
Programming Procedure
Once you have obtained PCbug11, use this step-by-step procedure to
program your MC68HC711E9 part.
Step 1
• Before applying power to the EVBU, remove the jumper from J7
and place it across J3 to ground the MODB pin.
• Place a jumper across J4 to ground the MODA pin. This will force
the EVBU into special bootstrap mode on power up.
• Remove the resident MC68HC11E9 MCU from the EVBU.
• Place your MC68HC711E9 in the open socket with the notched
corner of the part aligned with the notch on the PLCC socket.
• Connect the EVBU to one of your PC COM ports. Apply +5 volts
to V_DD and ground to GND on the power connector of your EVBU.
Also take note of P4 connector pin 18. In step 5, you will connect a +12-
volt (at most +12.5 volts) programming voltage through a 100-Ω current
limiting resistor to the XIRQ pin. Do not connect this programming
voltage until you are instructed to do so in step 5.
Step 2
• From a DOS command line prompt, start PCbug11 with
– C:\PCBUG11\> PCBUG11 –E PORT = 1
with the EVBU connected to COM1
– C:\PCBUG11\> PCBUG11 –E PORT = 2
with the EVBU connected to COM2
PCbug11 only supports COM ports 1 and 2. If you have made the
proper connections and have a high quality cable, you should
quickly get a PCbug11 command prompt. If you do receive a
Comms fault error, check your cable and board connections.
Most PCbug11 communications problems can be traced to poorly
made cables or bad board connections.
EB296
332
MOTOROLA