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Chapter 4 I/O Ports
IV - 44
Port A
4-9-3 Block Diagram
Figure 4-9-3 Block Diagram (PA0 to PA1)
Figure 4-9-4 Block Diagram (PA2 to PA6)
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
PA0-PA1
PAPLUD0-1
PADIR0-1
FLOAT(bp6)
PAOUT0-1
PAIN0-1
Analog input
Read
R
Reset
D
L
Q
Write
PAIMD0-1
Read
DA output
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
PA2-PA6
PAPLUD2-6
PADIR2-6
FLOAT(bp6)
PAOUT2-6
PAIN2-6
Analog input
Read
R
Reset
D
L
Q
Write
PAIMD2-6