Panasonic MN101C77C, F77G user manual Block Diagram P80 to P87

Chapter 4 I/O Ports

4-8-3 Block Diagram

Pull-up resistor control

I/O direction control

Port output data

Function switching output buffer

Port input data

	Reset
	R	P8PLU0-7
	D Q
Write	L	Read
	Reset
	R	P8DIR0-7
	D Q
Write	L	Read
	Reset	P80-P87
Data
	R	P8OUT0-7
bus
	D Q
Write	L	Read
	Reset
	R	P8LED0-7
	D Q
Write	L	Read
		P8IN0-7
	Read
Figure 4-8-3 Block Diagram (P80 to P87)

IV - 40 Port 8