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Chapter 7
I/O Port
7.2.5
Port n N-ch Open-drain Control Registers
PnODC is the register to control N-ch open-drain control of I/O.
Port 0 N-ch Open-drain Control Register (P0ODC: 0x03F50)
bp
Bit name
At reset
Access
bp
7
6
5-4
3-0
Port 1 N-ch Open-drain Control Register (P1ODC: 0x03F51)
bp
Bit name
At reset
Access
bp
7-6
5
4-0
VII - 18
Control Registers
7
6
P0ODC7
-
0
0
R/W
R
Bit name
N-ch open-drain output selection
P0ODC7
0: Push-pull output
1: N-ch open-drain output
-
Always read as 0.
N-ch open-drain output selection
P0ODC5-4
0: Push-pull output
1: N-ch open-drain output
-
Always read as 0.
7
6
-
-
P1ODC5
0
0
R
R
Bit name
-
Always read as 0.
N-ch open-drain output selection
P0ODC5
0: Push-pull output
1: N-ch open-drain output
-
Always read as 0.
5
4
P0ODC5-4
0
0
R/W
R/W
Description
5
4
-
0
0
R/W
R
Description
3
2
1
-
-
0
0
0
R
R
R
3
2
1
-
-
0
0
0
R
R
R
0
-
-
0
R
0
-
-
0
R
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