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Chapter 30 I/O Ports
1.I/O Ports Functions
P01_0
P01_0
TP04_0
General purpose I/O. This function is enabled in the single-chip mode or by
setting the corresponding PFR to ‘0’.
D16
I/O pin for bit 16 of the external data bus. This function is enabled when the
external bus is enabled.
Port 02
P02_7
P02_7
TP04_0
General purpose I/O. This function is enabled in the single-chip mode or by
setting the corresponding PFR to ‘0’.
D15
I/O pin for bit 15 of the external data bus. This function is enabled when the
external bus is enabled.
P02_6
P02_6
TP04_0
General purpose I/O. This function is enabled in the single-chip mode or by
setting the corresponding PFR to ‘0’.
D14
I/O pin for bit 14 of the external data bus. This function is enabled when the
external bus is enabled.
P02_5
P02_5
TP04_0
General purpose I/O. This function is enabled in the single-chip mode or by
setting the corresponding PFR to ‘0’.
D13
I/O pin for bit 13 of the external data bus. This function is enabled when the
external bus is enabled.
P02_4
P02_4
TP04_0
General purpose I/O. This function is enabled in the single-chip mode or by
setting the corresponding PFR to ‘0’.
D12
I/O pin for bit 12 of the external data bus. This function is enabled when the
external bus is enabled.
P02_3
P02_3
TP04_0
General purpose I/O. This function is enabled in the single-chip mode or by
setting the corresponding PFR to ‘0’.
D11
I/O pin for bit 11 of the external data bus. This function is enabled when the
external bus is enabled.
P02_2
P02_2
TP04_0
General purpose I/O. This function is enabled in the single-chip mode or by
setting the corresponding PFR to ‘0’.
D10
I/O pin for bit 10 of the external data bus. This function is enabled when the
external bus is enabled.
P02_1
P02_1
TP04_0
General purpose I/O. This function is enabled in the single-chip mode or by
setting the corresponding PFR to ‘0’.
D9
I/O pin for bit 9 of the external data bus. This function is enabled when the
external bus is enabled.
P02_0
P02_0
TP04_0
General purpose I/O. This function is enabled in the single-chip mode or by
setting the corresponding PFR to ‘0’.
D8
I/O pin for bit 8 of the external data bus. This function is enabled when the
external bus is enabled.
Port 03
P03_7
P03_7
TP04_0
General purpose I/O. This function is enabled in the single-chip mode or by
setting the corresponding PFR to ‘0’.
D7
I/O pin for bit 7 of the external data bus. This function is enabled when the
external bus is enabled.
P03_6
P03_6
TP04_0
General purpose I/O. This function is enabled in the single-chip mode or by
setting the corresponding PFR to ‘0’.
D6
I/O pin for bit 6 of the external data bus. This function is enabled when the
external bus is enabled.
Pin Name I/O Signal
Circuit
Type
Function