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Chapter 30 I/O Ports
1.I/O Ports Functions
P04_2
P04_2
TP04_0
General purpose I/O. This function is enabled in the single-chip mode or by
setting the corresponding PFR to ‘0’.
A26
I/O pin for bit 26 of the external address bus. This function is enabled when
the external bus is enabled.
P04_1
P04_1
TP04_0
General purpose I/O. This function is enabled in the single-chip mode or by
setting the corresponding PFR to ‘0’.
A25
I/O pin for bit 25 of the external address bus. This function is enabled when
the external bus is enabled.
P04_0
P04_0
TP04_0
General purpose I/O. This function is enabled in the single-chip mode or by
setting the corresponding PFR to ‘0’.
A24
I/O pin for bit 24 of the external address bus. This function is enabled when
the external bus is enabled.
Port 05
P05_7
P05_7
TP04_0
General purpose I/O. This function is enabled in the single-chip mode or by
setting the corresponding PFR to ‘0’.
A23
I/O pin for bit 23 of the external address bus. This function is enabled when
the external bus is enabled.
P05_6
P05_6
TP04_0
General purpose I/O. This function is enabled in the single-chip mode or by
setting the corresponding PFR to ‘0’.
A22
I/O pin for bit 22 of the external address bus. This function is enabled when
the external bus is enabled.
P05_5
P05_5
TP04_0
General purpose I/O. This function is enabled in the single-chip mode or by
setting the corresponding PFR to ‘0’.
A21
I/O pin for bit 21 of the external address bus. This function is enabled when
the external bus is enabled.
P05_4
P05_4
TP04_0
General purpose I/O. This function is enabled in the single-chip mode or by
setting the corresponding PFR to ‘0’.
A20
I/O pin for bit 20 of the external address bus. This function is enabled when
the external bus is enabled.
P05_3
P05_3
TP04_0
General purpose I/O. This function is enabled in the single-chip mode or by
setting the corresponding PFR to ‘0’.
A19
I/O pin for bit 19 of the external address bus. This function is enabled when
the external bus is enabled.
P05_2
P05_2
TP04_0
General purpose I/O. This function is enabled in the single-chip mode or by
setting the corresponding PFR to ‘0’.
A18
I/O pin for bit 18 of the external address bus. This function is enabled when
the external bus is enabled.
P05_1
P05_1
TP04_0
General purpose I/O. This function is enabled in the single-chip mode or by
setting the corresponding PFR to ‘0’.
A17
I/O pin for bit 17 of the external address bus. This function is enabled when
the external bus is enabled.
P05_0
P05_0
TP04_0
General purpose I/O. This function is enabled in the single-chip mode or by
setting the corresponding PFR to ‘0’.
A16
I/O pin for bit 16 of the external address bus. This function is enabled when
the external bus is enabled.
Port 06
Pin Name I/O Signal
Circuit
Type
Function