Port 1 Pull-Up Control Register (P1Pur); External Interrupt Control Register, High Byte (Exticonh) - Samsung S3C8275X User Manual

S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X
Figure 9-10. External Interrupt Control Register, High Byte (EXTICONH)

Port 1 Pull-up Control Register (P1PUR)

E9H, Set 1, Bank 0, R/W
MSB .7 .6
P1.7 P1.6 P1.5
P1PUR bit configuration settings:
0
Disable pull-up resistor
1
Enable pull-up resistor
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
MSB .7 .6
P1.7/INT7
EXTICONH bit configuration settings:
00
Disable interrupt
01
Enable interrupt by falling edge
10
Enable interrupt by rising edge
11
Enable interrupt by both falling and rising edge
.5 .4 .3 .2
P1.4
P1.3 P1.2
.5 .4 .3 .2
P1.6/INT6 P1.5/INT5
.1 .0 LSB
P1.1 P1.0
.1 .0 LSB
P1.4/INT4
I/O PORTS
9-9