MC908GR16ACFA FREESCALE [Freescale Semiconductor, Inc], MC908GR16ACFA Datasheet - Page 27
MC908GR16ACFA
Manufacturer Part Number
MC908GR16ACFA
Description
M68HC08 Microcontrollers
Manufacturer
FREESCALE [Freescale Semiconductor, Inc]
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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 Input/Output (I/O) Section
Most of the control, status, and data registers are in the zero page area of $0000–$003F. Additional I/O
registers have these addresses:
Data registers are shown in
Freescale Semiconductor
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15,872 bytes of user FLASH memory
1024 bytes of random-access memory (RAM)
406 bytes of FLASH programming routines read-only memory (ROM)
36 bytes of user-defined vectors
350 bytes of monitor ROM
$FE00; break status register, SBSR
$FE01; SIM reset status register, SRSR
$FE02; reserved
$FE03; break flag control register, SBFCR
$FE04; interrupt status register 1, INT1
$FE05; interrupt status register 2, INT2
$FE06; interrupt status register 3, INT3
$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
Figure
MC68HC908GR16A Data Sheet, Rev. 1.0
2-2.
Table 2-1
is a list of vector locations.
Figure
2-1, includes:
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