PIC18F66K80 FAMILY
DS39977F-page 182
2010-2012 Microchip Technology Inc.
TABLE 11-5:
PORTC FUNCTIONS
Pin Name
Function
TRIS
Setting
I/O
Type
Description
RC0/SOSCO/
SCLKI
RC0
0
O
DIG
LATC<0> data output.
1
I
ST
PORTC<0> data input.
SOSCO
1
I
ST
SOSC oscillator output.
SCLKI
1
I
ST
Digital clock input; enabled when SOSC oscillator is disabled.
RC1/SOSCI
RC1
0
O
DIG
LATC<1> data output.
1
I
ST
PORTC<1> data input.
SOSCI
x
I
ANA SOSC oscillator input.
RC2/T1G/
CCP2
RC2
0
O
DIG
LATC<2> data output.
1
I
ST
PORTC<2> data input.
T1G
x
I
ST
Timer1 external clock gate input.
CCP2
0
O
DIG
CCP2 compare/PWM output; takes priority over port data.
1
I
ST
CCP2 capture input.
RC3/REFO/
SCL/SCK
RC3
0
O
DIG
LATC<3> data output.
1
I
ST
PORTC<3> data input.
REFO
x
O
DIG
Reference output clock.
SCL
0
ODIG
I2C clock output (MSSP module); takes priority over port data.
1
II2CI2C clock input (MSSP module); input type depends on module setting.
SCK
0
O
DIG
SPI clock output (MSSP module); takes priority over port data.
1
I
ST
SPI clock input (MSSP module).
RC4/SDA/SDI
RC4
0
O
DIG
LATC<4> data output.
1
I
ST
PORTC<4> data input.
SDA
1
ODIG
I2C data output (MSSP module); takes priority over port data.
1
II2CI2C data input (MSSP module); input type depends on module setting.
SDI
1
I
ST
SPI data input (MSSP module).
RC5/SDO
RC5
0
O
DIG
LATC<5> data output.
1
I
ST
PORTC<5> data input.
SDO
0
O
DIG
SPI data output (MSSP module).
RC6/CANTX/
TX1/CK1/
CCP3
RC6
0
O
DIG
LATC<6> data output.
1
I
ST
PORTC<6> data input.
CANTX(2)
0
O
DIG
CAN bus TX.
TX1(1)
0
O
DIG
Asynchronous serial data output (EUSARTx module); takes priority over port data.
CK1(1)
0
ODIG
Synchronous serial clock output (EUSARTx module); user must configure as an input.
1
I
ST
Synchronous serial clock input (EUSARTx module); user must configure as an input.
CCP3
0
O
DIG
CCP3 compare/PWM output. Takes priority over port data.
1
I
ST
CCP3 capture input.
Legend:
O = Output; I = Input; I2C = I2C/SMBus; ANA = Analog Signal; DIG = CMOS Output; ST = Schmitt Trigger Buffer Input; x
= Don’t care (TRIS bit does not affect port direction or is overridden for this option)
Note
1:
The pin assignment for 28, 40 and 44-pin devices (PIC18F2XK80 and PIC18F4XK80).
2:
The alternate pin assignment for CANRX and CANTX on 28, 40 and 44-pin devices (PIC18F4XK80) when the CANMX
Configuration bit is set.
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