PIC18F4580 Datasheet, PDF (15/484 Pages) Microchip Technology – 28/40/44-Pin Enhanced Flash Microcontrollers with ECAN Technology, 10-Bit A/D and nanoWatt Technology

PIC18F2480/2580/4480/4580
TABLE 1-2: PIC18F2480/2580 PINOUT I/O DESCRIPTIONS (CONTINUED)
Pin Name
Pin Number
Pin Buffer
SPDIP,
SOIC
QFN
Type
Type
Description
PORTA is a bidirectional I/O port.
RA0/AN0
RA0
AN0
2 27
I/O TTL
Digital I/O.
I Analog Analog input 0.
RA1/AN1
RA1
AN1
3 28
I/O TTL
Digital I/O.
I Analog Analog input 1.
RA2/AN2/VREF-
RA2
AN2
VREF-
RA3/AN3/VREF+
RA3
AN3
VREF+
4
1
I/O TTL
Digital I/O.
I Analog Analog input 2.
I Analog A/D Reference Voltage (Low) input.
5
2
I/O TTL
Digital I/O.
I Analog Analog input 3.
I Analog A/D Reference Voltage (High) input.
RA4/T0CKI
RA4
T0CKI
6
3
I/O TTL
Digital I/O.
I
ST
Timer0 external clock input.
RA5/AN4/SS/HLVDIN 7
RA5
AN4
SS
HLVDIN
4
I/O TTL
Digital I/O.
I Analog Analog input 4.
I
TTL
SPI™ Slave Select input.
I Analog High/Low-Voltage Detect input.
RA6
See the OSC2/CLKO/RA6 pin.
RA7
See the OSC1/CLKI/RA7 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
 2004 Microchip Technology Inc.
Preliminary
DS39637A-page 13