Datasheet

PIC18F2450/4450
© 2008 Microchip Technology Inc. DS39760D-page 15
PORTC is a bidirectional I/O port.
RC0/T1OSO/T1CKI
RC0
T1OSO
T1CKI
11 8
I/O
O
I
ST
—
ST
Digital I/O.
Timer1 oscillator output.
Timer1external clock input.
RC1/T1OSI/UOE
RC1
T1OSI
UOE
12 9
I/O
I
O
ST
CMOS
—
Digital I/O.
Timer1 oscillator input.
External USB transceiver OE
output.
RC2/CCP1
RC2
CCP1
13 10
I/O
I/O
ST
ST
Digital I/O.
Capture 1 input/Compare 1 output/PWM1 output.
RC4/D-/VM
RC4
D-
VM
15 12
I
I/O
I
TTL
—
TTL
Digital input.
USB differential minus line (input/output).
External USB transceiver VM input.
RC5/D+/VP
RC5
D+
VP
16 13
I
I/O
O
TTL
—
TTL
Digital input.
USB differential plus line (input/output).
External USB transceiver VP input.
RC6/TX/CK
RC6
TX
CK
17 14
I/O
O
I/O
ST
—
ST
Digital I/O.
EUSART asynchronous transmit.
EUSART synchronous clock (see RX/DT).
RC7/RX/DT
RC7
RX
DT
18 15
I/O
I
I/O
ST
ST
ST
Digital I/O.
EUSART asynchronous receive.
EUSART synchronous data (see TX/CK).
RE3 — — — — See MCLR
/VPP/RE3 pin.
VUSB 14 11 P — Internal USB 3.3V voltage regulator. Output, positive supply
for internal USB transceiver.
V
SS 8, 19 5, 16 P — Ground reference for logic and I/O pins.
VDD 20 17 P — Positive supply for logic and I/O pins.
TABLE 1-2: PIC18F2450 PINOUT I/O DESCRIPTIONS (CONTINUED)
Pin Name
Pin Number
Pin
Type
Buffer
Type
Description
SPDIP,
SOIC
QFN
Legend: TTL = TTL compatible input CMOS = CMOS compatible input or output
ST = Schmitt Trigger input with CMOS levels I = Input
O = Output P = Power