Document Number: 002-04578 Rev. *A
Page 21 of 64
MB90910 Series
8. I/O Map
(Continued)
Address
Register
Abbrevia-
tion
Access
Resource name
Initial value
000000
H
,00
0001
H
Reserved
000002
H
Port 2 Data Register
PDR2
R/W
Port 2
XXXXXXXX
B
000003
H
Reserved
000004
H
Port 4 Data Register
PDR4
R/W
Port 4
XXXXXXXX
B
000005
H
Port 5 Data Register
PDR5
R/W
Port 5
XXXXXXXX
B
000006
H
Port 6 Data Register
PDR6
R/W
Port 6
XXXXXXXX
B
000007
H
Reserved
000008
H
Port 8 Data Register
PDR8
R/W
Port 8
XXXXXXXX
B
000009
H
,00
000A
H
Reserved
00000B
H
Port 5 Analog Input Enable Register
ADER5
R/W
Port 5, A/D
11111111
B
00000C
H
Port 6 Analog Input Enable Register
ADER6
R/W
Port 6, A/D
11111111
B
00000D
H
Reserved
00000E
H
Input Level Select Register 0
ILSR0
R/W
Ports
XXXXXXXX
B
00000F
H
Input Level Select Register 1
ILSR1
R/W
Ports
XXXX0XXX
B
000010
H
,00
0011
H
Reserved
000012
H
Port 2 Direction Register
DDR2
R/W
Port 2
00000000
B
000013
H
Reserved
000014
H
Port 4 Direction Register
DDR4
R/W
Port 4
00000000
B
000015
H
Port 5 Direction Register
DDR5
R/W
Port 5
00000000
B
000016
H
Port 6 Direction Register
DDR6
R/W
Port 6
00000000
B
000017
H
Reserved
000018
H
Port 8 Direction Register
DDR8
R/W
Port 8
00000000
B
000019
H
Reserved
00001A
H
Port A Direction Register
DDRA
W
Port A
00000111
B
00001B
H
to
00001D
H
Reserved
00001E
H
Port 2 Pull-up Control Register
PUCR2
R/W
Port 2
00000000
B
00001F
H
Reserved