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Chapter 4 I/O Ports
Port 7
Figure 4-7-7 Block Diagram (P74 )
Read
R
D
L
Q
Reset
Write
Read
R
D
L
Q
Reset
Write
Read
R
D
L
Q
Reset
Write
Read
Read
R
Reset
D
L
Q
Write
Pull-up/down resistor control
Pull-up/down resistor selection
I/O direction control
Port output data
Port input data
Data bus
P74
P7PLUD4
P7DIR4
FLOAT(bp4)
P7OUT4
P7IN4
Serial interface 1 reception data output
UART reception data output
Figure 4-7-8 Block Diagram (P75 )
Read
R
D
L
Q
Reset
Write
Read
R
D
L
Q
Reset
Write
Read
R
D
L
Q
Reset
Write
Read
Read
R
Reset
D
L
Q
Write
Pull-up/down resistor control
Pull-up/down resistor selection
I/O direction control
Port output data
Port input data
Data bus
P75
P7PLUD5
P7DIR5
FLOAT(bp4)
P7OUT5
P7IN5
Serial interface 1 clock output
0
1
SC1MD1 register
SC1SBOS flag
Serial interface 1 clock input
M
U
X