Port Data Register - Fujitsu F2MC-16LX MB90580 Series Hardware Manual

8.3 Registers and register details

8.3.1 Port data register

PDR0
Address: 000000
PDR1
Address: 000001
PDR2
Address: 000002
PDR3
Address: 000003
PDR4
Address: 000004
PDR5
Address: 000005
PDR6
Address: 000006
PDR7
Address: 000007
PDR8
Address: 000008
PDR9
Address: 000009
PDRA
Address: 00000A
Note: Note that R/W for I/O ports differ from R/W for memory in the following points:
Input mode
Read: The level of the corresponding pin is read.
Write: Data is written to an output latch.
Output mode
Read: The data register latch value is read.
Write: The data is output to the corresponding pin.
104 Chapter 8: Parallel Ports
7 6 5
P07 P06 P05
H
15 14 13
P17 P16 P15
H
7 6 5
P27 P26 P25
H
15 14 13
P37 P36 P35
H
7 6 5
P47 P46 P45
H
15 14 13
P57 P56 P55
H
7 6 5
P65
H
15 14 13
H
7 6 5
P87 P86 P85
H
15 14 13
P97 P96 P95
H
7 6 5
H
4 3 2 1
P04 P03 P02 P01
12 11 10 9
P14 P13 P12 P11
4 3 2 1
P24 P23 P22 P21
12 11 10 9
P34 P33 P32 P31
4 3 2 1
P44 P43 P42 P41
12 11 10 9
P54 P53 P52 P51
4 3 2 1
P64 P63 P62 P61
12 11 10 9
P74 P73 P72 P71
4 3 2 1
P84 P83 P82 P81
12 11 10 9
P94 P93 P92 P91
4 3 2 1
PA2 PA1
0
Initial value
Access
xxxxxxxx R/W
P00
8
xxxxxxxx
P10 R/W
0
R/W
P20 xxxxxxxx
8
xxxxxxxx
R/W
P30
0
R/W
P40 xxxxxxxx
8
R/W
xxxxxxxx
P50
0
--xxxxxx R/W
P60
8
R/W
---xxxx-
0
R/W
xxxxxxxx
P80
8
R/W
xxxxxxxx
P90
0
R/W
PA0 -----xxx
MB90580 Series