MC68HC08BD24 Datasheet, PDF (32/244 Pages) Motorola, Inc – HCMOS Microcontroller Unit

2.4 Reserved Memory Locations
Accessing a reserved location can have unpredictable effects on MCU
operation. In the Figure 2-1 and in register figures in this document,
reserved locations are marked with the word Reserved or with the
letter R.
2.5 Input/Output (I/O) Section
Most of the control, status, and data registers are in the zero page area
of $0000–$005F. Additional I/O registers have these addresses:
• $FE00; SIM Break Status Register, SBSR
• $FE01; SIM Reset Status Register, SRSR
• $FE02; reserved
• $FE03; SIM Break Flag Control Register, SBFCR
• $FE04; Interrupt Status Register 1, INT1
• $FE05; Interrupt Status Register 2, INT2
• $FE06; reserved
• $FE07; reserved
• $FE08; reserved
• $FE09; reserved
• $FE0A; reserved
• $FE0B; reserved
• $FE0C; Break Address Register High, BRKH
• $FE0D; Break Address Register Low, BRKL
• $FE0E; Break Status and Control Register, BRKSCR
Data registers are shown in Figure 2-2. Table 2-1 is a list of vector
locations.
Technical Data
32
MC68HC08BD24 — Rev. 1.1
Freescale Semiconductor