P3con – Samsung S3F80JB User Manual
Page 98

S3F80JB
CONTROL REGISTERS
4-31
P3CON
— Port 3 Control Register
EFH 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
Package Selection and Alternative Function Select Bits
0
0
32 pin package
P3.0: T0PWM/T0CAP/T1CAP/T2CAP, P3.1: REM/T0CK
Others
42/44 pin package
P3.0: T0PWM/T0CAP, P3.3: T1CAP/T2CAP
P3.1: REM, P3.2: T0CK
.5
P3.1 Function Selection Bit
0
Normal I/O selection
1
Alternative function enable (REM/T0CK)
.4 and .3
P3.1 Mode Selection Bits
0
0
Schmitt trigger input mode
0 1
Open-
drain
output
mode
1
0
Push pull output mode
1
1
Schmitt trigger input with pull up resistor.
.2 Function
Selection
Bit for P3.0 & P3.3
0
Normal I/O selection
1
Alternative function enable (P3.0: T0PWM/T0CAP, P3.3: T1CAP/T2CAP)
.1 and .0
P3.0 Mode Selection Bits
0
0
Schmitt trigger input mode
0 1
Open-
drain
output
mode
1
0
Push pull output mode
1
1
Schmitt trigger input with pull up resistor.