Nch open-drain control

 

Pull-up resistor control

 

I/O direction control

 

Port output data

Data bus

 

Port input data

Serial interface 4 clock input

Serial interface 4 clock output

SC4AD1 register

SELI2C flag

Reset

RSC4ODC11

D Q

Write

 

L

 

Read

 

 

Reset

RP5PLU4

D Q

Write

 

L

 

Read

 

 

Reset

RP5DIR4

 

 

D Q

 

 

 

Write

 

L

 

Read

 

 

 

 

 

 

 

Reset

 

 

 

 

 

0

M

 

 

 

 

 

 

 

R P5OUT4

 

 

 

D Q

 

 

U

Write

 

L

Read

1

 

 

 

X

P5IN4

Read

Figure 4-5-6 Block Diagram (P54)

Chapter 4 I/O Ports

P54

Port 5 IV - 25

Page 175
Image 175
Panasonic F77G, MN101C77C user manual Block Diagram P54