mc68hc908lb8 Freescale Semiconductor, Inc, mc68hc908lb8 Datasheet - Page 25
mc68hc908lb8
Manufacturer Part Number
mc68hc908lb8
Description
M68hc08 Microcontrollers Microcontroller
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC68HC908LB8.pdf
(234 pages)
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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
(Figure
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 Register Section
Most of the control, status, and data registers are in the zero page area of $0000–$0058. Additional I/O
registers have these addresses:
Freescale Semiconductor
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System registers
8192 bytes of user FLASH memory
128 bytes of random-access memory (RAM)
674 bytes of FLASH programming routines read-only memory (ROM)
34 bytes of user-defined vectors
$FE00; break status register, BSR
$FE01; SIM reset status register, SRSR
$FE02; break auxiliary register, BRKAR
$FE03; break flag control register, BFCR
$FE04; interrupt status register 1, INT1
$FE05; interrupt status register 2, INT2
$FE06; reserved
$FE07; reserved
$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
2-1) and in register figures in this document, unimplemented locations are shaded.
and in register figures in this document, reserved locations are marked with the word Reserved
MC68HC908LB8 Data Sheet, Rev. 1
Figure
2-1, includes:
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