PIC18F6390/6490/8390/8490
TABLE 1-2:
PIC18F6X90 PINOUT I/O DESCRIPTIONS (CONTINUED)
Pin Number
TQFP
Pin Buffer
Type Type
Pin Name
Description
PORTA is a bidirectional I/O port.
RA0/AN0
RA0
24
23
22
I/O
I
TTL
Analog
Digital I/O.
Analog input 0.
AN0
RA1/AN1
RA1
I/O
I
TTL
Analog
Digital I/O.
Analog input 1.
AN1
RA2/AN2/VREF-/SEG16
RA2
I/O
TTL
Digital I/O.
AN2
VREF-
SEG16
I
I
O
Analog
Analog
Analog
Analog input 2.
A/D reference voltage (Low) input.
SEG16 output for LCD.
RA3/AN3/VREF+/SEG17
21
RA3
I/O
TTL
Digital I/O.
AN3
VREF+
SEG17
I
I
O
Analog
Analog
Analog
Analog input 3.
A/D reference voltage (High) input.
SEG17 output for LCD.
RA4/T0CKI/SEG14
RA4
28
27
I/O ST/OD
Digital I/O. Open-drain when configured as output.
Timer0 external clock input.
SEG14 output for LCD.
T0CKI
SEG14
I
ST
O
Analog
RA5/AN4/HLVDIN/SEG15
RA5
I/O
TTL
Digital I/O.
AN4
HLVDIN
SEG15
I
I
O
Analog
Analog
Analog
Analog input 4.
Low-Voltage Detect input.
SEG15 output for LCD.
RA6
RA7
See the OSC2/CLKO/RA6 pin.
See the OSC1/CLKI/RA7 pin.
Legend: TTL = TTL compatible input
ST = Schmitt Trigger input with CMOS levels
CMOS = CMOS compatible input or output
Analog = Analog input
I
= Input
O
= Output
P
= Power
OD
= Open-Drain (no P diode to VDD)
Note 1: Default assignment for CCP2 when Configuration bit, CCP2MX, is set.
2: Alternate assignment for CCP2 when Configuration bit, CCP2MX, is cleared.
© 2007 Microchip Technology Inc.
DS39629C-page 13
MICROCHIP [ MICROCHIP ]
