s908gz60cfa Freescale Semiconductor, Inc, s908gz60cfa Datasheet - Page 33

• Manufacturer Part Number: s908gz60cfa
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Chapter 2
Memory
2.1 Introduction
The CPU08 can address 64 Kbytes of memory space. The memory map, shown in
2.2 Unimplemented Memory Locations
Accessing an unimplemented location can cause an illegal address reset. In the memory map
and in register figures in this document, unimplemented locations are shaded.
2.3 Reserved Memory Locations
Accessing a reserved location can have unpredictable effects on microcontroller (MCU) operation. In the
Figure 2-1
or with the letter R.
2.4 Input/Output (I/O) Section
Most of the control, status, and data registers are in the zero page area of $0000–$003F, or at
$0440–$0461. Additional I/O registers have these addresses:
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62,078 bytes of user FLASH memory
2048 bytes of random-access memory (RAM)
52 bytes of user-defined vectors
$FE00; SIM break status register, BSR
$FE01; SIM reset status register, SRSR
$FE02; reserved
$FE03; SIM break flag control register, BFCR
$FE04; interrupt status register 1, INT1
$FE05; interrupt status register 2, INT2
$FE06; interrupt status register 3, INT3
$FE07; interrupt status register 4, INT4
$FE08; FLASH-2 control register, FL2CR
$FE09; break address register high, BRKH
$FE0A; break address register low, BRKL
$FE0B; break status and control register, BRKSCR
$FE0C; LVI status register, LVISR
$FE0D; FLASH-2 test control register, FLTCR2
$FE0E; FLASH-1 test control register, FLTCR1
$FF80; FLASH-1 block protect register, FL1BPR
and in register figures in this document, reserved locations are marked with the word Reserved
MC68HC908GZ60 • MC68HC908GZ48 • MC68HC908GZ32 Data Sheet, Rev. 6
Figure
2-1, includes:
(Figure
2-1)
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