Table of Contents
Advertisement
CHAPTER 5 I/O PORTS
5.6
Port Data Register (PDR)
The port data registers (PDR2 to PDR1) are I/O data registers of the I/O ports. The
corresponding data direction registers (DDR2 to DDR1) control input and output.
I Port data register (PDR)
The register configuration of the port data register (PDR) is shown below.
PDR2
:
Address
000001
PDR3
:
000000
Address
PDR4
:
Address
000007
PDR5
:
Address
000006
PDR6
:
Address
000005
PDR8
:
00000B
Address
PDRC
:
Address
000013
PDRD
:
000012
Address
PDRE
:
Address
000011
PDRF
:
000010
Address
PDRG
:
Address
000017
PDRH
:
Address
000016
PDRI
:
Address
000015
PDRJ
:
000014
Address
PDRK
:
Address
00001B
PDRL
:
Address
00001A
156
7
6
5
4
P27
P26
P25
P24
H
7
6
5
4
P37
P36
P35
P34
H
7
6
5
4
P47
P46
P45
P44
H
7
6
5
4
P57
P56
P55
P54
H
7
6
5
4
P67
P66
P65
P64
H
7
6
5
4
-
P86
P85
P84
H
7
6
5
4
PC7
PC6
PC5
PC4
H
7
6
5
4
PD7
PD6
PD5
PD4
H
7
6
5
4
PE7
PE6
PE5
PE4
H
7
6
5
4
-
-
-
PF4
H
7
6
5
4
-
-
PG5
PG4
H
7
6
5
4
-
-
PH5
PH4
H
7
6
5
4
-
-
PI5
PI4
H
7
6
5
4
-
-
-
-
H
7
6
5
4
PK7
PK6
PK5
PK4
H
7
6
5
4
PL7
PL6
PL5
PL4
H
Initial value
3
2
1
0
P23
P22
P21
P20 XXXXXXXX
3
2
1
0
Initial value
P33
P32
P31
P30 XXXXXXXX
3
2
1
0
Initial value
P43
P42
P41
P40 XXXXXXXX
3
2
1
0
Initial value
P53
P52
P51
P50 XXXXXXXX
3
2
1
0
Initial value
P63
P62
P61
P60 XXXXXXXX
3
2
1
0
Initial value
P83
P82
P81
P80 -XXXXXXX
3
2
1
0
Initial value
PC3
PC2
PC1
PC0 XXXXXXXX
3
2
1
0
Initial value
PD3
PD2
PD1
PD0 XXXXXXXX
3
2
1
0
Initial value
PE3
PE2
PE1
PE0 XXXXXXXX
3
2
1
0
Initial value
PF3
PF2
PF1
PF0 ---XXXXX
3
2
1
0
Initial value
PG3
PG2
PG1
PG0 --XXXXXX
3
2
1
0
Initial value
PH3
PH2
PH1
PH0 -- XXXXXX
3
2
1
0
Initial value
PI3
PI2
PI1
PI0
--XXXXXX
3
2
1
0
Initial value
-
-
PJ1
PJ0
------11
3
2
1
0
Initial value
PK3
PK2
PK1
PK0 XXXXXXXX
3
2
1
0
Initial value
PL3
PL2
PL1
PL0 XXXXXXXX
Access
R/W
B
Access
R/W
B
Access
R/W
B
Access
R/W
B
Access
R/W
B
Access
R/W
B
Access
R/W
B
Access
R/W
B
Access
R/W
B
Access
R/W
B
Access
R/W
B
Access
R/W
B
Access
R/W
B
Access
R/W
B
Access
R/W
B
Access
R/W
B
Advertisement
Table of Contents
