Datasheet

© 2007 Microchip Technology Inc. DS39629C-page 19
PIC18F6390/6490/8390/8490
PORTG is a bidirectional I/O port.
RG0/SEG30
RG0
SEG30
3
I/O
O
ST
Analog
Digital I/O.
SEG30 output for LCD.
RG1/TX2/CK2/SEG29
RG1
TX2
CK2
SEG29
4
I/O
O
I/O
O
ST
—
ST
Analog
Digital I/O.
AUSART2 asynchronous transmit.
AUSART2 synchronous clock (see related RX2/DT2).
SEG29 output for LCD.
RG2/RX2/DT2/SEG28
RG2
RX2
DT2
SEG28
5
I/O
I
I/O
O
ST
ST
ST
Analog
Digital I/O.
AUSART2 asynchronous receive.
AUSART2 synchronous data (see related TX2/CK2).
SEG28 output for LCD.
RG3/SEG27
RG3
SEG27
6
I/O
O
ST
Analog
Digital I/O.
SEG27 output for LCD.
RG4/SEG26
RG4
SEG26
8
I/O
O
ST
Analog
Digital I/O.
SEG26 output for LCD.
RG5 See MCLR
/VPP/RG5 pin.
VSS 9, 25, 41, 56 P — Ground reference for logic and I/O pins.
VDD 10, 26, 38, 57 P — Positive supply for logic and I/O pins.
AV
SS 20 P — Ground reference for analog modules.
AVDD 19 P — Positive supply for analog modules.
TABLE 1-2: PIC18F6X90 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 OD = Open-Drain (no P diode to V
DD)
Note 1: Default assignment for CCP2 when Configuration bit, CCP2MX, is set.
2: Alternate assignment for CCP2 when Configuration bit, CCP2MX, is cleared.