Datasheet

 2010-2012 Microchip Technology Inc. DS39977F-page 19
PIC18F66K80 FAMILY
PORTA is a bidirectional I/O port.
RA0/CVREF/AN0/ULPWU 27 2
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 28 3
RA1 I/O ST/
CMOS
Digital I/O.
AN1 I Analog Analog Input 1.
RA2/V
REF-/AN2 1 4
RA2 I/O ST/
CMOS
Digital I/O.
V
REF- I Analog A/D reference voltage (low) input.
AN2 I Analog Analog Input 2.
RA3/VREF+/AN3 2 5
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/C2INB/HLVDIN/
T1CKI/SS/CTMUI
47
RA5 I/O ST/
CMOS
Digital I/O.
AN4 I Analog Analog Input 4.
C2INB I Analog Comparator 2 Input B.
HLVDIN I Analog High/Low-Voltage Detect input.
T1CKI I ST Timer1 clock input.
SS I ST SPI slave select input.
CTMUI CTMU pulse generator charger for the C2INB.
TABLE 1-4: PIC18F2XK80 I/O DESCRIPTIONS (CONTINUED)
Pin Name
Pin Number
Pin
Type
Buffer
Type
Description
QFN
SSOP/
SPDIP
/SOIC
Legend: CMOS = CMOS compatible input or output I
2
C™ = I
2
C/SMBus input buffer
ST = Schmitt Trigger input with CMOS levels Analog = Analog input
I = Input O = Output
P= Power