P1conl – Samsung S3F80JB User Manual
Page 92
S3F80JB
CONTROL REGISTERS
4-25
P1CONL
— Port 1 Control Register (Low Byte)
EBH Set1 Bank0
Bit
Identifier
.7 .6 .5 .4 .3 .2 .1 .0
Reset Value
0 0 0 0 0 0 0 0
Read/Write
R/W R/W R/W R/W R/W R/W R/W R/W
Addressing Mode
Register addressing mode only
.7 and .6
P1.3 Mode Selection Bits
0
0
C-MOS input mode
0 1
Open-drain
output
mode
1
0
Push-pull output mode
1
1
C-MOS input with pull up mode
.5 and .4
P1.2 Mode Selection Bits
0
0
C-MOS input mode
0 1
Open-drain
output
mode
1
0
Push-pull output mode
1
1
C-MOS input with pull up mode
.3 and .2
P1.1 Mode Selection Bits
0
0
C-MOS input mode
0 1
Open-drain
output
mode
1
0
Push-pull output mode
1
1
C-MOS input with pull up mode
.1 and .0
P1.0 Mode Selection Bits
0
0
C-MOS input mode
0 1
Open-drain
output
mode
1
0
Push-pull output mode
1
1
C-MOS input with pull up mode