Motorola MCF5282 ユーザーズマニュアル
6-4
MCF5282 User’s Manual
MOTOROLA
Memory Map
6.3
Memory Map
Figure 6-2 shows the memory map for the CFM array. The CFM array can reside anywhere
in the memory space of the MCU. The starting address of the array is determined by the
CFM array base address which must reside on a natural size boundary; that is, the CFM
array base address must be an integer multiple of the array size. The CFM register space
must reside on a 64 byte boundary as determined by the CFM register base address.
Figure 6-2 shows how multiple 32,768 by 16-bit Flash physical blocks interleave to form a
contiguous non-volatile memory space. Each pair of 32-bit blocks (even and odd)
interleave every 4 bytes to form a 256-Kbyte section of memory.
in the memory space of the MCU. The starting address of the array is determined by the
CFM array base address which must reside on a natural size boundary; that is, the CFM
array base address must be an integer multiple of the array size. The CFM register space
must reside on a 64 byte boundary as determined by the CFM register base address.
Figure 6-2 shows how multiple 32,768 by 16-bit Flash physical blocks interleave to form a
contiguous non-volatile memory space. Each pair of 32-bit blocks (even and odd)
interleave every 4 bytes to form a 256-Kbyte section of memory.
NOTE
The CFM on the MCF5281 is constructed with four banks of
32K x 16-bit Flash arrays to generate 256 Kbytes of 32-bit
Flash memory.
32K x 16-bit Flash arrays to generate 256 Kbytes of 32-bit
Flash memory.
Figure 6-2. CFM Array Memory Map
0x0007 FFFF
0x0004 000C
0x0000 0000
0x0000 0004
0x0000 0008
0x0000 000C
0x0003 FFFF
0x0004 0000
0x0004 0004
0x0004 0008
3H[1]
3L[1]
2H[1]
2L[1]
3H[0]
3L[0]
2H[0]
2L[0]
1H[1]
1L[1]
0H[1]
0L[1]
1H[1]
1L[1]
0H[0]
0L[0]
Logical Block 1 (256 Kbytes)
Memory
Array 2H
2H[31]
2L[31]
Memory
Array 2L
2H[0]
2L[0]
Flash Physical Block 2
Flash Physical Block 3
3H[31]
3L[31]
3H[0]
3L[0]
Memory
Array 3H
Memory
Array 3L
Logical Block 0 (256 Kbytes)
Memory
Array 0H
0H[31]
0L[31]
Memory
Array 0L
0H[0]
0L[0]
Flash Physical Block 0
Flash Physical Block 1
1H[31]
1L[31]
1H[0]
1L[0]
Memory
Array 1H
Memory
Array 1L
Each memory array = 64 Kbytes
(16 bits wide
× 32K)
Each physical block = 128 Kbytes
(32 bits wide
× 32K)
Configuration Field
(0x0000_0400–
0x0000_0417)
1
The MCF5281 supports only Logical Block 0.