Hitachi H8/500 Series

P2DR—Port 2 Data Register H'FF83 Port 2
Bit 76543210
———P2
4 P23 P22 P21 P20
Initial value 11100000
Read/Write — — — R/W R/W R/W R/W R/W
P3DR—Port 3 Data Register H'FF86 Port 3
Bit 76543210
P3
7 P36 P35 P34 P33 P32 P31 P30
Initial value 00000000
Read/Write R/W R/W R/W R/W R/W R/W R/W R/W
P3DDR—Port 3 Data Direction Register H'FF84 Port 3
Bit 76543210
P3
7DDR P36DDR P35DDR P34DDR P33DDR P32DDR P31DDR P30DDR
Initial value 00000000
Read/Write WWWWWWWW
P4DDR—Port 4 Data Direction Register H'FF85 Port 4
Bit 76543210
P4
7DDR P46DDR P45DDR P44DDR P43DDR P42DDR P41DDR P40DDR
Initial value 00000000
Read/Write WWWWWWWW
Port 3 Input/Output Selection
0 Input port
1 Output port
Port 4 Input/Output Selection
0 Input port
1 Output port
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