Port Direction Registers (Ddr0 To Ddra) - Fujitsu MB90480 Series Hardware Manual

8.2.2

Port direction registers (DDR0 to DDRA)

This section shows the configuration and explains the functions of port direction
registers (DDR0 to DDRA.)
■
Port direction registers (DDR0 to DDRA)
Figure 8.2-2 shows a list of port direction registers (DDR0 to DDRA).
Figure 8.2-2 List of port direction registers (DDR0 to DDRA)
DDR0
Address:000010
H
DDR1
Address:000011
H
DDR2
Address:000012
H
DDR3
Address:000013
H
DDR4
Address:000014
H
DDR5
Address:000015
H
DDR6
Address:000016
H
DDR7
Address:000017 D77
H
DDR8
Address:000018
H
DDR9
Address:000019
H
DDRA
Address:00001A
H
*1: The value of bit7 for MB90485 series is "
*2: The value of bit6 for MB90485 series is "
*3: The initial value of MB90485 series is "XX00000
❍ When each pin functions as a port
When each pin functions as a port, it controls the corresponding pin as follows:
• 0: Input mode
• 1: Output mode, which can be set to "0" by a reset.
7 6 5 4
D07 D06 D05 D04
7 6 5 4
D17 D16 D15 D14
7 6 5 4
D27 D26 D25 D24
7 6 5 4
D37 D36 D35 D34
7 6 5 4
D47 D46 D45 D44
7 6 5 4
D57 D56 D55 D54
7 6 5 4
D67 D66 D65 D64
7 6 5 4
*1 *2
D76 D75 D74
7 6 5 4
D87 D86 D85 D84
7 6 5 4
D97 D96 D95 D94
7 6 5 4
- - - -
3 2 1
D03 D02 D01
3 2 1
D13 D12 D11
3 2 1
D23 D22 D21
3 2 1
D33 D32 D31
3 2 1
D43 D42 D41
3 2 1
D53 D52 D51
3 2 1
D63 D62 D61
3 2 1
D73 D72 D71
3 2 1
D83 D82 D81
3 2 1
D93 D92 D91
3 2 1
DA3 DA2 DA1
-
".
-
".
".
B
CHAPTER 8 I/O PORT
0 Initial value Access
D00 00000000
B
0
D10 00000000
B
0
D20 00000000
B
0
D30 00000000
B
0
D40 00000000
B
0
D50 00000000
B
0
D60 00000000
B
0
*3
D70 00000000
B
0
D80 00000000
B
0
D90 00000000
B
0
DA0 - - - -0000
B
R/W : Readable/Writable
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
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