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S3F80P5_UM_ REV1.00
NOTES:
1.
The port 3 data register, P3, at location E3H, set1, bank0, contains seven bit values which correspond to the following
Port 3 pin functions (bit 6 is not used for the S3F80P5)
a. Port3, bit 7: carrier signal on ("1") or off ("0").
b. Port3, bit 1,0: P3.1/REM/T0CK pin, bit 0: P3.0/T0PWM/T0CAP/T1CAP pin.
2.
The alternative function enable/disable are enabled in accordance with function selection bit (bit5 and bit2).
3.
Following Table is the specific example about the alternative function and pin assignment according to the each bit
control of P3CON in 24 pin package.
Table 4-3. Each Function Description and Pin Assignment of P3CON in 24 Pin Package
P3CON
B5
B4
B3
B2
0
x
x
0
0
x
x
1
0
x
x
1
0
x
x
1
0
x
x
1
1
0
0
0
1
1
1
0
1
0
1
0
1
1
0
0
1
0
0
1
1
1
1
1
1
0
1
1
1
1
0
1
1
0
0
1
1
1
1
1
1
0
1
1
1
1
0
1
Each Function Description and Assignment to P3.0−P3.3
B1
B0
x
x
0
0
T0_CAP/T1_CAP
1
1
T0_CAP/T1_CAP
0
1
1
0
x
x
x
x
x
x
x
x
0
0
T0_CAP/T1_CAP
1
1
T0_CAP/T1_CAP
0
1
1
0
0
1
1
0
0
0
T0_CAP/T1_CAP
1
1
T0_CAP/T1_CAP
P3.0
Normal I/O
T0PWM
T0PWM
Normal I/O
Normal I/O
Normal I/O
Normal I/O
T0PWM
T0PWM
T0PWM
T0PWM
CONTROL REGISTERS
P3.1
Normal I/O
Normal I/O
Normal I/O
Normal I/O
Normal I/O
T0CK
T0CK
REM
REM
T0CK
T0CK
REM
REM
Normal Input
Normal Input
REM
REM
4-33
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