CONTROL REGISTERSS3F80JB

P0CONL — Port 0 Control Register (Low Byte)

E9H Set1 Bank0

Bit Identifier

Reset Value

Read/Write

Addressing Mode

.7

.6

.5

.4

.3

.2

.1

.0

0

0

0

0

0

0

0

0

R/W

R/W

R/W

R/W

R/W

R/W

R/W

R/W

Register addressing mode only

.7 and .6

P0.3/INT3 Mode Selection Bits

 

0

0

C-MOS input mode; interrupt on falling edges

 

0

1

C-MOS input mode; interrupt on rising and falling edges

 

1

0

Push-pull output mode

 

1

1

C-MOS input mode; interrupt on rising edges

.5 and .4

P0.2/INT2 Mode Selection Bits

 

0

0

C-MOS input mode; interrupt on falling edges

 

0

1

C-MOS input mode; interrupt on rising and falling edges

 

1

0

Push-pull output mode

 

1

1

C-MOS input mode; interrupt on rising edges

.3 and .2

P0.1/INT1 Mode Selection Bits

 

0

0

C-MOS input mode; interrupt on falling edges

 

 

 

 

 

0

1

C-MOS input mode; interrupt on rising and falling edges

 

 

 

 

 

1

0

Push-pull output mode

 

 

 

 

 

1

1

C-MOS input mode; interrupt on rising edges

.1 and .0

P0.0/INT0 Mode Selection Bits

 

0

0

C-MOS input mode; interrupt on falling edges

 

0

1

C-MOS input mode; interrupt on rising and falling edges

 

1

0

Push-pull output mode

 

1

1

C-MOS input mode; interrupt on rising edges

NOTES:

1.The INT3–INT0 external interrupts at P0.3–P0.0 are interrupt level IRQ6. Each interrupt has a separate vector address.

2.You can assign pull-up resistors to individual port 0 pins by making the appropriate settings to the P0PUR register. (P0PUR.3 – P0PUR.0)

4-20

Page 87
Image 87
Samsung S3F80JB manual P0CONL Port 0 Control Register Low Byte E9H Set1 Bank0, P0.3/INT3 Mode Selection Bits