Datasheet

 2003-2013 Microchip Technology Inc. DS30491D-page 13
PIC18F6585/8585/6680/8680
PORTA is a bidirectional I/O port.
RA0/AN0
RA0
AN0
24 34 30
I/O
I
TTL
Analog
Digital I/O.
Analog input 0.
RA1/AN1
RA1
AN1
23 33 29
I/O
I
TTL
Analog
Digital I/O.
Analog input 1.
RA2/AN2/V
REF-
RA2
AN2
V
REF-
22 32 28
I/O
I
I
TTL
Analog
Analog
Digital I/O.
Analog input 2.
A/D reference voltage (Low) input.
RA3/AN3/V
REF+
RA3
AN3
V
REF+
21 31 27
I/O
I
I
TTL
Analog
Analog
Digital I/O.
Analog input 3.
A/D reference voltage (High) input.
RA4/T0CKI
RA4
T0CKI
28 39 34
I/O
I
ST/OD
ST
Digital I/O – Open-drain when
configured as output.
Timer0 external clock input.
RA5/AN4/LVDIN
RA5
AN4
LVDIN
27 38 33
I/O
I
I
TTL
Analog
Analog
Digital I/O.
Analog input 4.
Low-voltage detect input.
RA6 See the OSC2/CLKO/RA6 pin.
TABLE 1-2: PIC18F6585/8585/6680/8680 PINOUT I/O DESCRIPTIONS (CONTINUED)
Pin Name
Pin Number
Pin
Type
Buffer
Type
DescriptionPIC18F6X8X PIC18F8X8X
TQFP PLCC 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: Alternate assignment for CCP2 in all operating modes except Microcontroller – applies to PIC18F8X8X only.
2: Default assignment when CCP2MX is set.
3: External memory interface functions are only available on PIC18F8X8X devices.
4: CCP2 is multiplexed with this pin by default when configured in Microcontroller mode; otherwise, it is
multiplexed with either RB3 or RC1.
5: PORTH and PORTJ are only available on PIC18F8X8X (80-pin) devices.
6: PSP is available in Microcontroller mode only.
7: On PIC18F8X8X devices, these pins can be multiplexed with RH7/RH6 by changing the ECCPMX
configuration bit.
18F8680.book Page 13 Tuesday, January 29, 2013 1:32 PM