Chapter 3 Port Functions

Pin Configuration for P20, P22 to P23

 

Reset

Pull-up resistor control

R

D Q

Write

 

L

 

Read

 

 

Data bus

Schmitt trigger input

Port input data

Read

Special function input data

*P23 is only for

48-pin package.

 

 

P20

 

P22

P23

Pull-up

Control bit

P2PLU0

 

P2PLU2

P2PLU3

resistor

Register

 

 

P2PLU

 

control

(address)

 

(X'03F42')

 

Port input

Control bit

P2IN0

 

P2IN2

P2IN3

Register

 

 

P2IN

 

 

(address)

 

(X'03F22')

 

Special function

Interrupt input

IRQ0

 

IRQ2

IRQ3

input

 

Figure 3-3-4 Configuration and Functions of P20, P22, P23

50 I/O Port Configuration and Functions

Page 64
Image 64
Panasonic MN101C00 Pin Configuration for P20, P22 to P23, P20 P22 P23 Pull-up Control bit, Port input Control bit