PIC18F2458 Datasheet, PDF (12/46 Pages) Microchip Technology – 28/40/44-Pin High-Performance, Enhanced Flash, USB Microcontrollers with 12-Bit A/D and nanoWatt Technology

PIC18F2458/2553/4458/4553
TABLE 1-2: PIC18F2458/2553 PINOUT I/O DESCRIPTIONS (CONTINUED)
Pin Name
Pin
Number _Pin
SPDIP, ^Type
SOIC
Buffer
Type
Description
RA0/AN0
2
RA0
AN0
RA1/AN1
3
RA1
AN1
RA2/AN2/VREF-/CVREF
4
RA2
AN2
VREF-
CVREF
RA3/AN3/VREF+
5
RA3
AN3
VREF+
RA4/T0CKI/C1OUT/RCV 6
RA4
T0CKI
C1OUT
RCV
PORTA is a bidirectional I/O port.
I/O TTL
I Analog
Digital I/O.
Analog input 0.
I/O TTL
I Analog
Digital I/O.
Analog input 1.
I/O TTL
I Analog
I Analog
O Analog
Digital I/O.
Analog input 2.
A/D reference voltage (low) input.
Analog comparator reference output.
I/O TTL
I Analog
I Analog
Digital I/O.
Analog input 3.
A/D reference voltage (high) input.
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: TTL = TTL compatible input
ST = Schmitt Trigger input with CMOS levels
O = Output
CMOS = CMOS compatible input or output
I
= Input
P
= Power
Note 1: Alternate assignment for CCP2 when CCP2MX Configuration bit is cleared.
2: Default assignment for CCP2 when CCP2MX Configuration bit is set.
DS39887B-page 10
Preliminary
© 2007 Microchip Technology Inc.