Datasheet

 2010-2012 Microchip Technology Inc. DS39977F-page 25
PIC18F66K80 FAMILY
PORTA is a bidirectional I/O port.
RA0/CVREF/AN0/ULPWU 2 19
RA0 I/O ST/
CMOS
General purpose I/O pin.
CV
REF O Analog Comparator reference voltage output.
AN0 I Analog Analog Input 0.
ULPWU I Analog Ultra Low-Power Wake-up input.
RA1/AN1/C1INC 3 20
RA1 I/O ST/
CMOS
Digital I/O.
AN1 I Analog Analog Input 1.
C1INC I Analog Comparator 1 Input C.
RA2/V
REF-/AN2/C2INC 4 21
RA2 I/O ST/
CMOS
Digital I/O.
V
REF- I Analog A/D reference voltage (low) input.
AN2 I Analog Analog Input 2.
C2INC I Analog Comparator 2 Input C.
RA3/V
REF+/AN3 5 22
RA3 I/O ST/
CMOS
Digital I/O.
V
REF+ I Analog A/D reference voltage (high) input.
AN3 I Analog Analog Input 3.
RA5/AN4/HLVDIN/T1CKI/
SS
724
RA5 I/O ST/
CMOS
Digital I/O.
AN4 I Analog Analog Input 4.
HLVDIN I Analog High/Low-Voltage Detect input.
T1CKI I ST Timer1 clock input.
SS
I ST SPI slave select input.
TABLE 1-5: PIC18F4XK80 PINOUT I/O DESCRIPTIONS (CONTINUED)
Pin Name
Pin Number
Pin
Type
Buffer
Type
Description
PDIP
QFN/
TQFP
Legend: I
2
C™ = I
2
C/SMBus input buffer CMOS = CMOS compatible input or output
ST = Schmitt Trigger input with CMOS levels Analog = Analog input
I = Input O = Output
P= Power