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15.3.3 Port0A Bit I/O Selection Register (P0ABIO)
Port0B Bit I/O Selection Register (P0BBIO)
Port1B Bit I/O Selection Register (P1BBIO)
Port1C Group I/O Selection Register (P1CGPIO)
The Port0A bit I/O selection register sets I/O for each pin of P0A. The Port0B bit I/O selection register sets
I/O for each pin of P0B. The Port1B bit I/O selection register sets I/O for each pin of P1B. The Port1C group
I/O selection register sets I/O for each pin of P1C.
The following explains the configuration and functions.
Flag symbol
Register
b
3
Port1C group
I/O selection
0
(P1CGPIO)
Port1B bit
I/O selection
(P1BBIO)
Port0B bit
I/O selection
(P0BBIO)
Port0A bit
I/O selection
(P0ABIO)
Power-on
0
Clock stop
CE
b
b
b
2
1
0
P
1
C
0
0
G
I
Flag symbol
O
b
b
b
b
3
2
1
0
P
P
P
P
1
1
1
1
B
B
B
B
B
B
B
B
I
I
I
I
O
O
O
O
3
2
1
0
b
B
B
O
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Flag symbol
b
b
b
3
2
1
0
P
P
P
P
0
0
0
0
B
B
B
B
B
B
I
I
I
I
Flag symbol
O
O
O
3
2
1
0
b
b
b
b
3
2
1
P
P
P
P
0
0
0
0
A
A
A
A
B
B
B
B
I
I
I
O
O
O
O
3
2
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
PD17062
Read/
Address
write
27H
R/W
35H
R/W
36H
R/W
0
37H
R/W
I
Sets I/O of each general-
purpose port
Port0A
P0A
pin
0
P0A
pin
1
P0A
pin
2
P0A
pin
3
Port0B
P0B
pin
0
P0B
pin
1
P0B
pin
2
P0B
pin
3
Port1B
P1B
pin
0
P1B
pin
1
P1B
pin
2
P1B
pin
3
Port1C
P1C
to P1C
pins
3
1
Input port
Output port
Fixed at 0
0
0
0
195
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