Port 2 Low-Byte Control Register (P2Conl); Port 2 Pull-Up Control Register (P2Pur) - Samsung S3C8275X User Manual

I/O PORTS
9-12
Port 2 Control Register, Low Byte (P2CONL)
EBH, Set 1, Bank 0, R/W
MSB .7 .6 .5
P2.3/SEG28 P2.2/SEG29 P2.1/SEG30
P2CONL bit-pair pin configuration settings:
00 Input mode
01 N-channel open-drain output mode
10 Push-pull output mode
11 Alternative function (SEG28-SEG31/V
Figure 9-14. Port 2 Low-byte Control Register (P2CONL)

Port 2 Pull-up Control Register (P2PUR)

ECH, Set 1, Bank 0, R/W
MSB .7 .6
P2.7 P2.6 P2.5
P2PUR bit configuration settings:
0
1
NOTE: A pull-up resistor of port 2 is automatically disabled when the
corresponding pin is selected as push-pull output or alternative
function.
Figure 9-15. Port 2 Pull-up Control Register (P2PUR)
S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X
.4 .3 .2
.5 .4 .3 .2
P2.4 P2.3 P2.2
Disable pull-up resistor
Enable pull-up resistor
.1 .0 LSB
P2.0/SEG31/V
BLDREF
)
BLDREF
.1 .0 LSB
P2.1 P2.0