PIC18F2450/4450
TABLE 1-2:
PIC18F2450 PINOUT I/O DESCRIPTIONS (CONTINUED)
Pin Number
Pin Buffer
Type Type
Pin Name
Description
PDIP,
QFN
SOIC
PORTC is a bidirectional I/O port.
RC0/T1OSO/T1CKI
RC0
11
12
8
9
I/O
O
I
ST
—
ST
Digital I/O.
Timer1 oscillator output.
Timer1external clock input.
T1OSO
T1CKI
RC1/T1OSI/UOE
RC1
I/O
I
—
ST
CMOS
—
Digital I/O.
Timer1 oscillator input.
External USB transceiver OE output.
T1OSI
UOE
RC2/CCP1
RC2
13
15
10
12
I/O
I/O
ST
ST
Digital I/O.
CCP1
Capture 1 input/Compare 1 output/PWM 1 output.
RC4/D-/VM
RC4
D-
VM
I
I/O
I
TTL
—
TTL
Digital input.
USB differential minus line (input/output).
External USB transceiver VM input.
RC5/D+/VP
16
17
18
13
14
15
RC5
D+
VP
I
TTL
—
TTL
Digital input.
USB differential plus line (input/output).
External USB transceiver VP input.
I/O
O
RC6/TX/CK
RC6
TX
CK
I/O
O
I/O
ST
—
ST
Digital I/O.
EUSART asynchronous transmit.
EUSART synchronous clock (see RX/DT).
RC7/RX/DT
RC7
I/O
I
I/O
ST
ST
ST
Digital I/O.
EUSART asynchronous receive.
EUSART synchronous data (see TX/CK).
RX
DT
RE3
VUSB
VSS
—
—
11
—
O
P
—
—
—
—
See MCLR/VPP/RE3 pin.
14
Internal USB 3.3V voltage regulator.
Ground reference for logic and I/O pins.
Positive supply for logic and I/O pins.
CMOS = CMOS compatible input or output
8, 19 5, 16
20 17
VDD
P
Legend: TTL = TTL compatible input
ST = Schmitt Trigger input with CMOS levels
= Output
I
= Input
O
P
= Power
© 2006 Microchip Technology Inc.
Advance Information
DS39760A-page 15
MICROCHIP [ MICROCHIP ]
