Freescale Semiconductor Microcontrollers - Manual (Page 342)

MON08 Interface Connection
Connection Procedure
342 Microcontrollers Debugger Manual
• 6 – ROM is accessible (un-secured):
If the device properly entered monitor mode (4), the software reads locations $FFF6-
$FFFF to determine if the processor passes the security check. Memory locations
which are invalid or protected read back from the device as $AD. If all bytes from
$FFF6-$FFFF read a value of $AD, it is assumed the device is secure, and the flag
value is an ‘N’. If all flags 0-5 register a value of ‘Y’ and flag 6 registers a value of
‘N,’ then the reset process has occurred correctly except that the security code used
to pass security was incorrect. Specify the correct security code and try again, or
IGNORE the security failure and erase the device. Once you erase a secured device,
you must exit the software and restart it in order to pass security.
Active Mode Connection Menu Options
When the microprocessor is connected, more menu entries become available to the user.
Figure 12.9 Additional MON08 Connection Menu Options