![](http://datasheet.mmic.net.cn/330000/MB90F654A_datasheet_16438029/MB90F654A_32.png)
32
MB90650A Series
(2) Port Direction Registers
Address : 000000
H
P07
P06
P05
P04
P03
P02
P01
P00
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
Initial value
Access
Initial value
Access
Initial value
Access
Initial value
Access
Initial value
Access
Initial value
Access
Initial value
Access
Initial value
Access
Initial value
Access
Initial value
Access
Initial value
Access
XXXXXXXX
B
R/W*
Port 0 data register (PDR0)
Address : 000001
H
P17
P16
P15
P14
P13
P12
P11
P10
bit 15
bit 14
bit 13
bit 12
bit 11
bit 10
bit 9
bit 8
XXXXXXXX
B
R/W*
Port 1 data register (PDR1)
Address : 000002
H
P27
P26
P25
P24
P23
P22
P21
P20
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
XXXXXXXX
B
R/W*
Port 2 data register (PDR2)
Address : 000003
H
P37
P36
P35
P34
P33
P32
P31
P30
bit 15
bit 14
bit 13
bit 12
bit 11
bit 10
bit 9
bit 8
XXXXXXXX
B
R/W*
Port 3 data register (PDR3)
Address : 000004
H
P47
P46
P45
P44
P43
P42
P41
P40
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
1XXXXXXX
B
R/W*
Port 4 data register (PDR4)
Address : 000005
H
P57
P56
P55
P54
P53
P52
P51
P50
bit 15
bit 14
bit 13
bit 12
bit 11
bit 10
bit 9
bit 8
XXXXXXXX
B
R/W*
Port 5 data register (PDR5)
Address : 000006
H
P67
P66
P65
P64
P63
P62
P61
P60
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
XXXXXXXX
B
R/W*
Port 6 data register (PDR6)
Address : 000007
H
—
—
—
P74
P73
P72
P71
P70
bit 15
bit 14
bit 13
bit 12
bit 11
bit 10
bit 9
bit 8
- - - XX111
B
R/W*
Port 7 data register (PDR7)
Address : 000008
H
—
P86
P85
P84
P83
P82
P81
P80
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
- XXXXXXX
B
R/W*
Port 8 data register (PDR8)
Address : 00000A
H
—
—
—
—
—
PA2
PA1
PA0
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
- - - - - XXX
B
R/W*
Port A data register (PDRA)
Address : 000009
H
P97
P96
P95
P94
P93
P92
P91
P90
bit 15
bit 14
bit 13
bit 12
bit 11
bit 10
bit 9
bit 8
XXXXXXXX
B
R/W*
Port 9 data register (PDR9)
R/W
—
X
: Readable and writable
: Unused
: Indeterminate
* :The operation of reading or writing to I/O ports is slightly different from reading or writing to memory, as follows.
Input mode
Read: Reads the corresponding pin level.
Write: Writes to the output latch.
Output mode
Read: Reads the value of the data register latch.
Write: The value is output from the corresponding pin.