Figure 2-5 Little-Endian And Big-Endian Memory Formats - ARM Cortex-M3 Technical Reference Manual

Programmer's Model
2-12
Little-endian data format
31 24 23
Byte 3 at Byte 2 at
address F address E
Halfword 1 at address E
Byte 3 at Byte 2 at
address B address A
Halfword 1 at address A
Byte 3 at Byte 2 at
address 7 address 6
Halfword 1 at address 6
Byte 3 at Byte 2 at
address 3 address 2
Halfword 1 at address 2
Big-endian data format
31 24 23
Byte 0 at Byte 1 at
address F address E
Halfword 0 at address E
Byte 0 at Byte 1 at
address B address A
Halfword 0 at address A
Byte 0 at Byte 1 at
address 7 address 6
Halfword 0 at address 6
Byte 0 at Byte 1 at
address 3 address 2
Halfword 0 at address 2

Figure 2-5 Little-endian and big-endian memory formats

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16 15 8 7
Byte 1 at Byte 0 at
address D address C
Halfword 0 at address C
Byte 1 at Byte 0 at
address 9 address 8
Halfword 0 at address 8
Byte 1 at Byte 0 at
address 5 address 4
Halfword 0 at address 4
Byte 1 at Byte 0 at
address 1 address 0
Halfword 0 at address 0
16 15 8 7
Byte 2 at Byte 3 at
address D address C
Halfword 1 at address C
Byte 2 at Byte 3 at
address 9 address 8
Halfword 1 at address 8
Byte 2 at Byte 3 at
address 5 address 4
Halfword 1 at address 4
Byte 2 at Byte 3 at
address 1 address 0
Halfword 1 at address 0
0
Word at address C
Word at address 8
Word at address 4
Word at address 0
0
Word at address C
Word at address 8
Word at address 4
Word at address 0
ARM DDI 0337B