Panasonic MN101C77C - Manual (Page 190)

Chapter 4 I/O Ports
IV - 40 Port 8
4-
8-3 Block Diagram
Figure 4-8-3 Block Diagram (P80 to P87)
R
D
L
Q
Reset
Write Read
R
D
L
Q
Reset
Write Read
D
L
Q
Write
R
Reset
R
Reset
Pull-up resistor control
I/O direction control
Port output data
Port input data
Function switching output buffer
Data bus
Read
Read
P80-P87
P8PLU0-7
P8DIR0-7
P8OUT0-7
D
L
Q
Write Read
P8LED0-7
P8IN0-7