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MC908JB16DWE Datasheet, PDF (42/332 Pages) Freescale Semiconductor, Inc – Microcontrollers | |||
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Memory Map
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 $0000â$007F. Additional I/O registers have these addresses:
⢠$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; FLASH control register, FLCR
⢠$FE09; FLASH block protect register, FLBPR
⢠$FE0A; Reserved
⢠$FE0B; Reserved
⢠$FE0C; Break address register high, BRKH
⢠$FE0D; Break address register low, BRKL
⢠$FE0E; Break status and control register, BRKSCR
⢠$FE0F; Reserved
⢠$FFFF; COP control register, COPCTL
Data registers are shown in Figure 2-2. Table 2-1 is a list of vector
locations.
Technical Data
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Memory Map
MC68HC908JB16 â Rev. 1.1
Freescale Semiconductor
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