
2010 Microchip Technology Inc.
DS39635C-page 15
PIC18F6310/6410/8310/8410
PORTA is a bidirectional I/O port.
RA0/AN0
RA0
AN0
24
I/O
I
TTL
Analog
Digital I/O.
Analog Input 0.
RA1/AN1
RA1
AN1
23
I/O
I
TTL
Analog
Digital I/O.
Analog Input 1.
RA2/AN2/VREF-
RA2
AN2
VREF-
22
I/O
I
TTL
Analog
Digital I/O.
Analog Input 2.
A/D reference voltage (low) input.
RA3/AN3/VREF+
RA3
AN3
VREF+
21
I/O
I
TTL
Analog
Digital I/O.
Analog Input 3.
A/D reference voltage (high) input.
RA4/T0CKI
RA4
T0CKI
28
I/O
I
ST
Digital I/O.
Timer0 external clock input.
RA5/AN4/HLVDIN
RA5
AN4
HLVDIN
27
I/O
I
TTL
Analog
Digital I/O.
Analog Input 4.
High/Low-Voltage Detect input.
RA6
See the OSC2/CLKO/RA6 pin.
RA7
See the OSC1/CLKI/RA7 pin.
TABLE 1-2:
PIC18F6310/6410 PINOUT I/O DESCRIPTIONS (CONTINUED)
Pin Name
Pin Number
Pin
Type
Buffer
Type
Description
TQFP
Legend:
TTL = TTL compatible input
CMOS = CMOS compatible input or output
ST = Schmitt Trigger input with CMOS levels
Analog = Analog input
I
= Input
O
= Output
P= Power
I2C = ST with I2C or SMB levels
Note 1:
Default assignment for CCP2 when Configuration bit, CCP2MX, is set.
2:
Alternate assignment for CCP2 when Configuration bit, CCP2MX, is cleared.