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PC312XDP512F0CFVR Datasheet(PDF) 687 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) 687 Page - Freescale Semiconductor, Inc

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Chapter 18 Memory Mapping Control (S12XMMCV3)
MC9S12XDP512 Data Sheet, Rev. 2.21
Freescale Semiconductor
687
18.5.3.3
ROM Control in Normal Expanded Mode
In normal expanded mode the external bus will be connected to the application. If the ROMON bit is set,
the internal FLASH provides the data. If the ROMON bit is cleared, the application memory provides the
data (see Figure 18-29).
Figure 18-29. ROM in Normal Expanded Mode
ROMON = 1
Application
MCU
ROMON = 0
Application
MCU
Flash
Memory
Memory



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