S3C84BB Datasheet, PDF (91/361 Pages) Samsung semiconductor – 8-BIT CMOS

S3C84BB/F84BB
CONTROL REGISTERS
P4CONL — Port 4 Control Register (Low Byte)
F7H
Set 1, Bank 0
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-.6
P4.3/INT3
0 0 Input mode; falling edge interrupt
0 1 Input mode; rising edge interrupt
1 0 Input mode, pull-up; falling edge interrupt
1 1 Push-pull output
.5-.4
P4.2/INT2
0 0 Input mode; falling edge interrupt
0 1 Input mode; rising edge interrupt
1 0 Input mode, pull-up; falling edge interrupt
1 1 Push-pull output
.3-.2
P4.1/INT1
0 0 Input mode; falling edge interrupt
0 1 Input mode; rising edge interrupt
1 0 Input mode, pull-up; falling edge interrupt
1 1 Push-pull output
.1-.0
P4.0/INT0
0 0 Input mode; falling edge interrupt
0 1 Input mode; rising edge interrupt
1 0 Input mode, pull-up; falling edge interrupt
1 1 Push-pull output
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