Samsung S3P80C5 User Manual page 219

I/O PORTS
9-8
Port 1 Control Register, Low Byte (P1CONL)
MSB .7 .6 .5
P1.3
P1CONL Pin Configureation Settings:
00 Input mode
01 Open-drain output mode
10 Push-pull output mode
11 Invalid setting
Figure 9-8. Port 1 Low-Byte Control Register (P1CONL)
EBH, Set 1, R/W
.4 .3 .2
P1.1
P1.2
S3P80C5/C80C5/C80C8
.1 .0 LSB
P1.0