P1conh – Samsung S3F80JB User Manual
Page 91
CONTROL REGISTERS
S3F80JB
4-24
P1CONH
— Port 1 Control Register (High Byte)
EAH Set1 Bank0
Bit
Identifier
.7 .6 .5 .4 .3 .2 .1 .0
Reset Value
1 1 1 1 1 1 1 1
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
P1.7 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
P1.6 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
P1.5 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
P1.4 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