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Chapter 5
Bus Control Function
User’s Manual U16702EE3V2UD00
(3)
Word access (32 bits)
(a) 16-bit data bus width (1/2)
<1> Access to address (4n)
<2> Access to address (4n + 1)
7
0
7
0
Word data
15
8
External
data bus
4n
Address
15
8
4n + 1
23
16
31
24
7
0
7
0
Word data
15
8
External
data bus
4n + 2
Address
15
8
4n + 3
23
16
31
24
1-st Access
2-nd Access
7
0
7
0
Word data
15
8
External
data bus
Address
15
8
4n + 1
23
16
31
24
7
0
7
0
Word data
15
8
External
data bus
4n + 2
Address
15
8
4n + 3
23
16
31
24
7
0
7
0
Word data
15
8
External
data bus
4n + 4
Address
15
8
23
16
31
24
1-st Access
2-nd Access
3-rd Access
electronic components distributor