PIC18F6585/8585/6680/8680
DS30491C-page 14
2004 Microchip Technology Inc.
PORTB is a bidirectional I/O port. PORTB
can be software programmed for internal
weak pull-ups on all inputs.
RB0/INT0
RB0
INT0
48
60
58
I/O
I
TTL
ST
Digital I/O.
External interrupt 0.
RB1/INT1
RB1
INT1
47
59
57
I/O
I
TTL
ST
Digital I/O.
External interrupt 1.
RB2/INT2
RB2
INT2
46
58
56
I/O
I
TTL
ST
Digital I/O.
External interrupt 2.
RB3/INT3/CCP2
RB3
INT3
CCP2(1)
45
57
55
I/O
TTL
ST
Digital I/O.
External interrupt 3.
Capture 2 input/Compare 2 output/
PWM 2 output.
RB4/KBI0
RB4
KBI0
44
56
54
I/O
I
TTL
ST
Digital I/O.
Interrupt-on-change pin.
RB5/KBI1/PGM
RB5
KBI1
PGM
43
55
53
I/O
I
I/O
TTL
ST
Digital I/O.
Interrupt-on-change pin.
Low-Voltage ICSP Programming
enable pin.
RB6/KBI2/PGC
RB6
KBI2
PGC
42
54
52
I/O
I
I/O
TTL
ST
Digital I/O.
Interrupt-on-change pin.
In-circuit debugger and ICSP
programming clock.
RB7/KBI3/PGD
RB7
KBI3
PGD
37
48
47
I/O
TTL
ST
Digital I/O.
Interrupt-on-change pin.
In-circuit debugger and ICSP
programming data.
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.