9
Programming On-Chip PROM
If a 68HC711 micro-controller is installed in U1, you can program it using this development
board and the utility software provided. You can then remove the micro-controller and install
it in your product if desired.
Unlike the external EEPROM in U7 however, this type of memory cannot be erased or
overwritten by this development board. It may be possible to erase the device using an
external UV eraser so that it can be re-programmed.
If your application programmed into external EEPROM and runs ok when power is applied,
then it should run ok out of U1. Follow these steps to program it:
1. Change the start address of your program to
$D000
which is the beginning of the On-
Chip PROM in a 68HC711 device.
2. Change the Reset Vector in your code to
$D000
then re-assemble it.
3. Apply a 12V DC programming voltage to the VPP connector.
4. Install a jumper in the PROG position (1-2).
5. Start the programming interface (AX11E for DOS or AXIDE for windows).
6. Select "Configure Processor" or [Configure] and follow the onscreen instructions. Make
sure ROMON is enabled and if not configure it to be so.
7. Select "Program Internal Memory". If using the windows utility select [Program] and
make sure On-Chip EPROM is selected.
8. At the file prompt enter your newly assembled S19 file.
9. Click OK then follow the onscreen instructions.
10. When finished programming, remove the jumpers as instructed by the program.
11.
IMPORTANT
: Be sure to remove the PROG jumper and the VPP programming voltage
at this time.
Your new program should be programmed into the micro-controller and will start
automatically when power or RESET is applied.
