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PC312XDP512F0CFVR Datasheet(PDF) 648 Page - Freescale Semiconductor, Inc

Part # PC312XDP512F0CFVR
Description  HCS12X Microcontrollers
PDF  1348 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

PC312XDP512F0CFVR Datasheet(HTML) 648 Page - Freescale Semiconductor, Inc

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Chapter 17 Memory Mapping Control (S12XMMCV2)
MC9S12XDP512 Data Sheet, Rev. 2.21
648
Freescale Semiconductor
17.5.3.4
ROM Control in Emulation Expanded Mode
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 Figure 1-30). When the ROMON bit is cleared, the application memory provides the data and
the emulator will observe the CPU internal actions (see Figure 1-31).
Figure 17-30. ROMON = 1 in Emulation Expanded Mode
EROMON = 1
Application
MCU
Flash
Memory
Emulator
EROMON = 0
Application
MCU
Memory
Emulator
Flash
Generator
Observer



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