mc9s12xd256 Freescale Semiconductor, Inc, mc9s12xd256 Datasheet - Page 648
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mc9s12xd256
Manufacturer Part Number
mc9s12xd256
Description
Hcs12x Microcontrollers
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC9S12XD256.pdf
(1350 pages)
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Chapter 17 Memory Mapping Control (S12XMMCV2)
17.5.3.4
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
the emulator will observe the CPU internal actions (see
648
Figure
ROM Control in Emulation Expanded Mode
1-30). When the ROMON bit is cleared, the application memory provides the data and
MCU
MCU
Figure 17-30. ROMON = 1 in Emulation Expanded Mode
Flash
MC9S12XDP512 Data Sheet, Rev. 2.17
Figure
Emulator
Application
Emulator
Application
1-31).
EROMON = 0
EROMON = 1
Memory
Memory
Flash
Observer
Generator
Freescale Semiconductor
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