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S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X I/O PORTS
9-9
Port 1 Pull-up Control Register (P1PUR)
E9H, Set 1, Bank 0, R/W
.7 .6 .5 .4 .3 .2 .1 .0MSB LSB
P1PUR bit configuration settings:
0
1
Enable pull-up resistor
Disable pull-up resistor
P1.3 P1.2 P1.1 P1.0
P1.7 P1.6 P1.5 P1.4
NOTE:
A pull-up resistor of port 1 is automatically disabled when the
corresponding pin is selected as push-pull output or alternative
function.
Figure 9-9. Port 1 Pull-up Control Register (P1PUR)
External Interrupt Control Register, High Byte (EXTICONH)
F8H, Set 1, Bank 0, R/W
.7 .6 .5 .4 .3 .2 .1 .0MSB LSB
P1.7/INT7
EXTICONH bit configuration settings:
00
01
Enable interrupt by falling edge
Disable interrupt
10
11
Enable interrupt by both falling and rising edge
Enable interrupt by rising edge
P1.6/INT6 P1.5/INT5 P1.4/INT4
Figure 9-10. External Interrupt Control Register, High Byte (EXTICONH)