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Chapter 4 I/O Ports
IV - 8
Port 0
R
D
L
Q
Reset
Write
Read
Read
R
D
L
Q
Reset
Write
Read
D
L
Q
Write
Read
R
Reset
Pull-up resistor control
I/O direction control
Port output data
Serial interface 1 reception data input
/UART 1 reception data input
Serial interface 4 reception data input
Port input data
Data bus
P0PLU1
P01
P0DIR1
P0OUT1
P0IN1
0
1
SC4AD1 register
SELI2C flag
Serial interface 4 transmission data output
M
U
X
Nch open-drain control
R
D
L
Q
Reset
Write
Read
SC4ODC00
4-2-3 Block Diagram
Figure 4-2-2 Block diagram (P00)
Figure 4-2-3 Block diagram (P01)
R
D
L
Q
Reset
Write
Read
R
R
D
L
Q
Reset
Write
Read
D
L
Q
Write
Read
Read
Reset
I/O direction control
Port output data
SC1MD1 register
SC1SBOS flag
Serial interface 1 transmission data output/
UART transmission data output
Port input data
Data bus
M
U
X
0
1
P00
P0PLU0
P0DIR0
P0OUT0
P0IN0
Pull-up resistor control