2004 Microchip Technology Inc.
DS30491C-page 15
PIC18F6585/8585/6680/8680
PORTC is a bidirectional I/O port.
RC0/T1OSO/T13CKI
RC0
T1OSO
T13CKI
30
41
36
I/O
O
I
ST
—
ST
Digital I/O.
Timer1 oscillator output.
Timer1/Timer3 external clock input.
RC1/T1OSI/CCP2
RC1
T1OSI
CCP2(1, 4)
29
40
35
I/O
I
I/O
ST
CMOS
ST
Digital I/O.
Timer1 oscillator input.
CCP2 Capture input/Compare output/
PWM 2 output.
RC2/CCP1/P1A
RC2
CCP1
P1A
33
44
43
I/O
ST
Digital I/O.
CCP1 Capture input/Compare output.
CCP1 PWM output A.
RC3/SCK/SCL
RC3
SCK
SCL
34
45
44
I/O
ST
Digital I/O.
Synchronous serial clock input/output
for SPI mode.
Synchronous serial clock input/output
for I2C mode.
RC4/SDI/SDA
RC4
SDI
SDA
35
46
45
I/O
I
I/O
ST
Digital I/O.
SPI data in.
I2C data I/O.
RC5/SDO
RC5
SDO
36
47
46
I/O
O
ST
—
Digital I/O.
SPI data out.
RC6/TX/CK
RC6
TX
CK
31
42
37
I/O
O
I/O
ST
—
ST
Digital I/O.
USART asynchronous transmit.
USART synchronous clock
(see RX/DT).
RC7/RX/DT
RC7
RX
DT
32
43
38
I/O
I
I/O
ST
Digital I/O.
USART 1 asynchronous receive.
USART 1 synchronous data
(see TX/CK).
TABLE 1-2:
PIC18F6585/8585/6680/8680 PINOUT I/O DESCRIPTIONS (CONTINUED)
Pin Name
Pin Number
Pin
Type
Buffer
Type
Description
PIC18F6X8X 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 VDD)
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.