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S3C8245/P8245/C8249/P8249 I/O PORTS
9-7
Port 1 Control Register, Low Byte (P1CONL)
E5H, Set 1, Bank 0, R/W
.7 .6 .5 .4 .3 .2 .1 .0MSB LSB
P1.3
P1CONL bit-pair pin configuration settings:
00
01
10
11
Alternative function (T1OUT, T1PWM, other pins are push-pull
are push-pull output mode)
Output mode, push-pull
P1.2/T1OUT
/T1PWM
P1.1/T1CLK
P1.0/T1CAP
Output mode, open-drain
NOTE:
When use this port 1, user must be care of the pull-up resistance status.
Input mode (T1CAP, T1CLK)
Figure 9-6. Port 1 Low-Byte Control Register (P1CONL)
Port 1 Pull-up Control Register (P1PUR)
F5H, Set 1, Bank 0, R/W
.7 .6 .5 .4 .3 .2 .1 .0MSB LSB
P1PUP bit configuration settings:
0
1
Pull-up Disable
P1.7 P1.6 P1.5 P1.4 P1.3 P1.2 P1.1 P1.0
Pull-up Enable
Figure 9-7. Port 1 Pull-up Control Register (P1PUP)