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Chapter 30 I/O Ports
1.I/O Ports Functions
P03_5
P03_5
TP04_0
General purpose I/O. This function is enabled in the single-chip mode or by
setting the corresponding PFR to ‘0’.
D5
I/O pin for bit 5 of the external data bus. This function is enabled when the
external bus is enabled.
P03_4
P03_4
TP04_0
General purpose I/O. This function is enabled in the single-chip mode or by
setting the corresponding PFR to ‘0’.
D4
I/O pin for bit 4 of the external data bus. This function is enabled when the
external bus is enabled.
P03_3
P03_3
TP04_0
General purpose I/O. This function is enabled in the single-chip mode or by
setting the corresponding PFR to ‘0’.
D3
I/O pin for bit 3 of the external data bus. This function is enabled when the
external bus is enabled.
P03_2
P03_2
TP04_0
General purpose I/O. This function is enabled in the single-chip mode or by
setting the corresponding PFR to ‘0’.
D2
I/O pin for bit 2 of the external data bus. This function is enabled when the
external bus is enabled.
P03_1
P03_1
TP04_0
General purpose I/O. This function is enabled in the single-chip mode or by
setting the corresponding PFR to ‘0’.
D1
I/O pin for bit 1 of the external data bus. This function is enabled when the
external bus is enabled.
P03_0
P03_0
TP04_0
General purpose I/O. This function is enabled in the single-chip mode or by
setting the corresponding PFR to ‘0’.
D0
I/O pin for bit 0 of the external data bus. This function is enabled when the
external bus is enabled.
Port 04
P04_7
P04_7
TP04_0
General purpose I/O. This function is enabled in the single-chip mode or by
setting the corresponding PFR to ‘0’.
A31
I/O pin for bit 31 of the external address bus. This function is enabled when
the external bus is enabled.
P04_6
P04_6
TP04_0
General purpose I/O. This function is enabled in the single-chip mode or by
setting the corresponding PFR to ‘0’.
A30
I/O pin for bit 30 of the external address bus. This function is enabled when
the external bus is enabled.
P04_5
P04_5
TP04_0
General purpose I/O. This function is enabled in the single-chip mode or by
setting the corresponding PFR to ‘0’.
A29
I/O pin for bit 29 of the external address bus. This function is enabled when
the external bus is enabled.
P04_4
P04_4
TP04_0
General purpose I/O. This function is enabled in the single-chip mode or by
setting the corresponding PFR to ‘0’.
A28
I/O pin for bit 28 of the external address bus. This function is enabled when
the external bus is enabled.
P04_3
P04_3
TP04_0
General purpose I/O. This function is enabled in the single-chip mode or by
setting the corresponding PFR to ‘0’.
A27
I/O pin for bit 27 of the external address bus. This function is enabled when
the external bus is enabled.
Pin Name I/O Signal
Circuit
Type
Function