PIC18F2455_09 Datasheet, PDF (15/438 Pages) Microchip Technology – 28/40/44-Pin,High-Performance,Enhanced Flash,USB Microcontrollers with nanoWatt Technology

PIC18F2455/2550/4455/4550
TABLE 1-2: PIC18F2455/2550 PINOUT I/O DESCRIPTIONS (CONTINUED)
Pin Name
Pin
Number _Pin
PDIP, ^Type
SOIC
Buffer
Type
Description
PORTA is a bidirectional I/O port.
RA0/AN0
RA0
AN0
2
I/O TTL
Digital I/O.
I Analog Analog input 0.
RA1/AN1
RA1
AN1
3
I/O TTL
Digital I/O.
I Analog Analog input 1.
RA2/AN2/VREF-/CVREF
RA2
AN2
VREF-
CVREF
4
I/O TTL
Digital I/O.
I Analog Analog input 2.
I Analog A/D reference voltage (low) input.
O Analog Analog comparator reference output.
RA3/AN3/VREF+
RA3
AN3
VREF+
5
I/O TTL
Digital I/O.
I Analog Analog input 3.
I Analog A/D reference voltage (high) input.
RA4/T0CKI/C1OUT/RCV 6
RA4
T0CKI
C1OUT
RCV
I/O ST
I
ST
O
—
I
TTL
Digital I/O.
Timer0 external clock input.
Comparator 1 output.
External USB transceiver RCV input.
RA5/AN4/SS/
HLVDIN/C2OUT
RA5
AN4
SS
HLVDIN
C2OUT
7
I/O TTL
I Analog
I
TTL
I Analog
O
—
Digital I/O.
Analog input 4.
SPI slave select input.
High/Low-Voltage Detect input.
Comparator 2 output.
RA6
—
—
—
See the OSC2/CLKO/RA6 pin.
Legend:
Note 1:
2:
TTL = TTL compatible input
ST = Schmitt Trigger input with CMOS levels
O = Output
CMOS = CMOS compatible input or output
I
= Input
P
= Power
Alternate assignment for CCP2 when CCP2MX Configuration bit is cleared.
Default assignment for CCP2 when CCP2MX Configuration bit is set.
© 2009 Microchip Technology Inc.
DS39632E-page 13