S912XHZ512F1VAG Datasheet, PDF (889/978 Pages) Freescale Semiconductor, Inc – Covers MC9S12XHZ384, MC9S12XHZ256

MCU
Chapter 25 Memory Mapping Control (S12XMMCV3)
Emulator
Observer
Application
Memory
Figure 25-31. ROMON = 0 in Emulation Expanded Mode
25.5.3.5 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 25-32).
MCU
Application
Memory
ROMON = 0
MCU
Application
Flash
Memory
ROMON = 1
Figure 25-32. ROM in Special Test Mode
MC9S12XHZ512 Data Sheet, Rev. 1.06
Freescale Semiconductor
889