Chapter 4 I/O Ports

4-6-3 Block Diagram

Pull-up resistor control

I/O direction control

Port output data

Port input data

Syncronous output control

 

Reset

 

 

 

 

 

R

P6PLU0-7

 

 

 

 

D Q

 

 

 

 

Write

L

 

Read

 

 

 

Reset

 

 

 

 

 

R

P6DIR0-7

 

 

 

 

D Q

 

 

 

 

Write

L

 

Read

 

 

Databus

R

P6OUT0-7

R

1

U

 

Reset

 

Reset

0

M

 

D Q

 

D Q

 

X

Write

L

Read

L

 

 

 

 

 

 

S

 

 

 

 

 

Set

 

 

 

 

P6IN0-7

 

 

 

 

Read

 

 

Schmitt input

 

 

 

 

Syncronous output event

Reset

RP6SYO0-7

D Q

Write

 

L

 

Read

 

 

P60-P67

Figure 4-6-3 Block Diagram (P60 to P67)

Port 6 IV - 29

Page 179
Image 179
Panasonic F77G, MN101C77C user manual Block Diagram P60 to P67