
MB90590/590G Series
19
s
s I/O MAP
(Continued)
Address
Register
Abbreviation Access
Peripheral
Initial value
00H
Port 0 Data Register
PDR0
R/W
Port 0
XXXXXXXXB
01H
Port 1 Data Register
PDR1
R/W
Port 1
XXXXXXXXB
02H
Port 2 Data Register
PDR2
R/W
Port 2
XXXXXXXXB
03H
Port 3 Data Register
PDR3
R/W
Port 3
XXXXXXXXB
04H
Port 4 Data Register
PDR4
R/W
Port 4
XXXXXXXXB
05H
Port 5 Data Register
PDR5
R/W
Port 5
XXXXXXXXB
06H
Port 6 Data Register
PDR6
R/W
Port 6
XXXXXXXXB
07H
Port 7 Data Register
PDR7
R/W
Port 7
XXXXXXXXB
08H
Port 8 Data Register
PDR8
R/W
Port 8
XXXXXXXXB
09H
Port 9 Data Register
PDR9
R/W
Port 9
_ _ XXXXXXB
0AH to 0FH
Reserved
10H
Port 0 Direction Register
DDR0
R/W
Port 0
0 0 0 0 0 0 0 0B
11H
Port 1 Direction Register
DDR1
R/W
Port 1
0 0 0 0 0 0 0 0B
12H
Port 2 Direction Register
DDR2
R/W
Port 2
0 0 0 0 0 0 0 0B
13H
Port 3 Direction Register
DDR3
R/W
Port 3
0 0 0 0 0 0 0 0B
14H
Port 4 Direction Register
DDR4
R/W
Port 4
0 0 0 0 0 0 0 0B
15H
Port 5 Direction Register
DDR5
R/W
Port 5
0 0 0 0 0 0 0 0B
16H
Port 6 Direction Register
DDR6
R/W
Port 6
0 0 0 0 0 0 0 0B
17H
Port 7 Direction Register
DDR7
R/W
Port 7
0 0 0 0 0 0 0 0B
18H
Port 8 Direction Register
DDR8
R/W
Port 8
0 0 0 0 0 0 0 0B
19H
Port 9 Direction Register
DDR9
R/W
Port 9
_ _ 0 0 0 0 0 0B
1AH
Reserved
1BH
Analog Input Enable Register
ADER
R/W
Port 6, A/D
1 1 1 1 1 1 1 1B
1CH to 1FH
Reserved
20H
Serial Mode Control Register 0
UMC0
R/W
UART0
0 0 0 0 0 1 0 0B
21H
Serial Status Register 0
USR0
R/W
0 0 0 1 0 0 0 0B
22H
Serial Input/Output Data Register 0
UIDR0/
UODR0
R/W
XXXXXXXXB
23H
Rate and Data Register 0
URD0
R/W
0 0 0 0 0 0 0XB
24H
Serial Mode Control Register 1
UMC1
R/W
UART1
0 0 0 0 0 1 0 0B
25H
Serial Status Register 1
USR1
R/W
0 0 0 1 0 0 0 0B
26H
Serial Input/Output Data Register 1
UIDR1/
UODR1
R/W
XXXXXXXXB
27H
Rate and Data Register 1
URD1
R/W
0 0 0 0 0 0 0XB