22 p1bbion (35h), 23 p0bbion (36h) – NEC PD17062 User Manual
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µ
PD17062
9.22 P1BBIOn (35H)
P1BBIOn specifies the PORT1B I/O. When P1BBIOn is set to 0, PORT1B becomes an input port. When
P1BBIOn is set to 1, PORT1B becomes an output port.
9.23 P0BBIOn (36H)
P0BBIOn specifies the PORT0B I/O. When P0BBIOn is set to 0, PORT0B becomes an input port. When
P0BBIOn is set to 1, PORT0B becomes an output port.
b
3
b
2
b
1
b
0
P0BBIO3
P0BBIO2
P0BBIO0
36H
0
1
P0BBIO1
P0B
0
I/O setting
0
1
P0B
1
I/O setting
0
1
P0B
2
I/O setting
0
1
P0B
3
I/O setting
P0B
0
input port
P0B
0
output port
P0B
1
input port
P0B
1
output port
P0B
2
input port
P0B
2
output port
P0B
3
input port
P0B
3
output port
b
3
b
2
b
1
b
0
P1BBIO3
P1BBIO2
P1BBIO0
35H
0
1
P1BBIO1
P1B
0
I/O setting
0
1
P1B
1
I/O setting
0
1
P1B
2
I/O setting
0
1
P1B
3
I/O setting
P1B
0
input port
P1B
0
output port
P1B
1
input port
P1B
1
output port
P1B
2
input port
P1B
2
output port
P1B
3
input port
P1B
3
output port