MC9S12XD256MAL Datasheet, PDF (649/1348 Pages) Freescale Semiconductor, Inc – Freescale’s Scalable Controller Area Network

MCU
Chapter 17 Memory Mapping Control (S12XMMCV2)
Emulator
Observer
Application
Memory
Figure 17-31. ROMON = 0 in Emulation Expanded Mode
17.5.3.5 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 1-32).
MCU
Application
Memory
ROMON = 0
MCU
Application
Flash
Memory
ROMON = 1
Figure 17-32. ROM in Special Test Mode
MC9S12XDP512 Data Sheet, Rev. 2.21
Freescale Semiconductor
649