Chapter 3 Memory Mapping Control (S12XMMCV4)
MC9S12XE-Family Reference Manual Rev. 1.19
Freescale Semiconductor
225
Figure 3-28. ROMON = 0 in Emulation Expanded Mode
3.5.3.5
ROM Control in Special Test Mode
In special test mode the external bus is connected to the application. If the ROMON bit is set, the internal
FLASH provides the data, otherwise the application memory provides the data (see
Figure 3-29. ROM in Special Test Mode
Application
MCU
Memory
Emulator
Observer
Application
MCU
Memory
ROMON = 0
Application
MCU
Memory
ROMON = 1
Flash
Because
of
an
order
from
the
United
States
International
Trade
Commission,
BGA-packaged
product
lines
and
part
numbers
indicated
here
currently
are
not
available
from
Freescale
for
import
or
sale
in
the
United
States
prior
to
September
2010:
S12XE
products
in
208
MAPBGA
packages