Microchip Technology MCP3421DM-WS Data Sheet
© 2009 Microchip Technology Inc.
DS39632E-page 121
PIC18F2455/2550/4455/4550
TABLE 10-6:
SUMMARY OF REGISTERS ASSOCIATED WITH PORTC
RC7/RX/DT/
SDO
SDO
RC7
0
OUT
DIG
LATC<7> data output.
1
IN
ST
PORTC<7> data input.
RX
1
IN
ST
Asynchronous serial receive data input (EUSART module).
DT
1
OUT
DIG
Synchronous serial data output (EUSART module); takes priority over
SPI and port data.
SPI and port data.
1
IN
ST
Synchronous serial data input (EUSART module). User must
configure as an input.
configure as an input.
SDO
0
OUT
DIG
SPI data output (MSSP module); takes priority over port data.
TABLE 10-5:
PORTC I/O SUMMARY (CONTINUED)
Pin
Function
TRIS
Setting
I/O
I/O Type
Description
Legend:
OUT = Output, IN = Input, ANA = Analog Signal, DIG = Digital Output, ST = Schmitt Buffer Input,
TTL = TTL Buffer Input, XCVR = USB transceiver, x = Don’t care (TRIS bit does not affect port direction or is overridden
for this option)
TTL = TTL Buffer Input, XCVR = USB transceiver, x = Don’t care (TRIS bit does not affect port direction or is overridden
for this option)
Note 1:
Default pin assignment. Alternate pin assignment is RB3 (when CCP2MX = 0).
2:
RC4 and RC5 do not have corresponding TRISC bits. In Port mode, these pins are input only. USB data direction is
determined by the USB configuration.
determined by the USB configuration.
3:
40/44-pin devices only.
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
(1)
RC4
(1)
—
RC2
RC1
RC0
LATC
LATC7
LATC6
—
—
—
LATC2
LATC1
LATC0
TRISC
TRISC7
TRISC6
—
—
—
TRISC2
TRISC1
TRISC0
UCON
—
PPBRST
SE0
PKTDIS
USBEN
RESUME SUSPND
—
Legend: — = unimplemented, read as ‘0’. Shaded cells are not used by PORTC.
Note 1:
Note 1:
RC5 and RC4 are only available as port pins when the USB module is disabled (UCON<3> = 0).