Справочник Пользователя для Motorola MC68HC908MR16
MC68HC908MR16/MC68HC908MR32 — Rev. 4.0
Advance Information
MOTOROLA
Memory Map
39
Advance Information — MC68HC908MR16/MC68HC908MR32
Section 2. Memory Map
2.1 Contents
2.2 Introduction
The central processor unit (CPU08) can address 64 Kbytes of memory
space. The memory map, shown in
space. The memory map, shown in
, includes:
•
32 Kbytes of FLASH
•
768 bytes of random-access memory (RAM)
•
46 bytes of user-defined vectors
•
240 bytes of monitor read-only memory (ROM)
2.3 Unimplemented Memory Locations
Some addresses are unimplemented. Accessing an unimplemented
address can cause an illegal address reset. In the memory map and in
the input/output (I/O) register summary, unimplemented addresses are
shaded.
address can cause an illegal address reset. In the memory map and in
the input/output (I/O) register summary, unimplemented addresses are
shaded.
Some I/O bits are read only; the write function is unimplemented. Writing
to a read-only I/O bit has no effect on microcontroller unit (MCU)
operation. In register figures, the write function of read-only bits is
shaded.
to a read-only I/O bit has no effect on microcontroller unit (MCU)
operation. In register figures, the write function of read-only bits is
shaded.