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MC908GR8CDWE Datasheet, PDF (36/408 Pages) Freescale Semiconductor, Inc – M68HC08 Microcontrollers | |||
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Memory Map
Freescale Semiconductor, Inc.
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$003F. Additional I/O registers have these addresses:
⢠$FE00; SIM break status register, SBSR
⢠$FE01; SIM reset status register, SRSR
⢠$FE03; SIM break flag control register, SBFCR
⢠$FE09; interrupt status register 1, INT1
⢠$FE0A; interrupt status register 2, INT2
⢠$FE0B; interrupt status register 3, INT3
⢠$FE07; reserved FLASH test control register, FLTCR
⢠$FE08; FLASH control register, FLCR
⢠$FE09; break address register high, BRKH
⢠$FE0A; break address register low, BRKL
⢠$FE0B; break status and control register, BRKSCR
⢠$FE0C; LVI status register, LVISR
⢠$FF7E; FLASH block protect register, FLBPR
Data registers are shown in Figure 2-2, and Table 2-1 is a list of vector
locations.
Technical Data
36
MC68HC908GR8 â Rev 4.0
Memory Map
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