Microchip Technology DM183021 Data Sheet
2010 Microchip Technology Inc.
DS39616D-page 121
PIC18F2331/2431/4331/4431
TABLE 11-6:
SUMMARY OF REGISTERS ASSOCIATED WITH PORTC
RC7/RX/DT/SDO
RC7
0
O
DIG
LATC<7> data output.
1
I
ST
PORTC<7> data input.
RX
1
I
ST
Asynchronous serial receive data input (EUSART module).
DT
0
O
DIG
Synchronous serial data output (EUSART module); takes priority over
port data.
port data.
1
I
ST
Synchronous serial data input (EUSART module). User must
configure as an input.
configure as an input.
SDO
(1)
0
O
DIG
SPI data out; takes priority over port data.
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Reset Values
on Page:
PORTC
RC7
RC6
RC5
RC4
RC3
RC2
RC1
RC0
LATC
LATC Data Output Register
TRISC
PORTC Data Direction Register
INTCON
GIE/GIEH PEIE/GIEL
TMR0IE
INT0IE
RBIE
TMR0IF
INT0IF
RBIF
INTCON2
RBPU
INTEDG0 INTEDG1 INTEDG2
—
TMR0IP
—
RBIP
INTCON3
INT2IP
INT1IP
—
INT2IE
INT1IE
—
INT2IF
INT1IF
Legend:
— = unimplemented, read as ‘0’. Shaded cells are not used by PORTC.
TABLE 11-5:
PORTC I/O SUMMARY (CONTINUED)
Pin
Function
TRIS
Setting
I/O
I/O
Type
Description
Legend:
DIG = Digital level output; TTL = TTL input buffer; ST = Schmitt Trigger input buffer; ANA = Analog level input/output;
x
x
= Don’t care (TRIS bit does not affect port direction or is overridden for this option).
Note
1:
RD0 is the alternate pin for T0CKI/T5CKI; RD2 is the alternate pin for SDI/SDA; RD3 is the alternate pin for SCK/SCL;
RD1 is the alternate pin for SDO.
RD1 is the alternate pin for SDO.