mc9s12xd256 Freescale Semiconductor, Inc, mc9s12xd256 Datasheet - Page 689

• Manufacturer Part Number: mc9s12xd256
• Description: Hcs12x Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

18.5.3.4
In emulation expanded mode the external bus will be connected to the emulator and to the application. If
the ROMON bit is set, the internal FLASH provides the data. If the EROMON bit is set as well the
emulator observes all CPU internal actions, otherwise the emulator provides the data and traces all CPU
actions (see
and the emulator will observe the CPU internal actions (see
Freescale Semiconductor
Figure
ROM Control in Emulation Expanded Mode
18-30). When the ROMON bit is cleared, the application memory provides the data
MCU
MCU
Figure 18-30. ROMON = 1 in Emulation Expanded Mode
Flash
MC9S12XDP512 Data Sheet, Rev. 2.17
Emulator
Application
Emulator
Application
Figure
Chapter 18 Memory Mapping Control (S12XMMCV3)
EROMON = 0
EROMON = 1
Memory
Memory
Flash
18-31).
Observer
Generator
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