
PIC18CXX2
DS39026C-page 14
2001 Microchip Technology Inc.
PORTB is a bi-directional I/O port. PORTB can be
software programmed for internal weak pull-ups on all
inputs.
RB0/INT0
RB0
INT0
33
36
8
I/O
I
TTL
ST
Digital I/O.
External Interrupt 0.
RB1/INT1
RB1
INT1
34
37
9
I/O
I
TTL
ST
External Interrupt 1.
RB2/INT2
RB2
INT2
35
38
10
I/O
I
TTL
ST
Digital I/O.
External Interrupt 2.
RB3/CCP2
RB3
CCP2
36
39
11
I/O
TTL
ST
Digital I/O.
Capture2 input, Compare2 output, PWM2 output.
RB4
37
41
14
I/O
TTL
Digital I/O. Interrupt-on-change pin.
RB5
38
42
15
I/O
TTL
Digital I/O. Interrupt-on-change pin.
RB6
39
43
16
I/O
I
TTL
ST
Digital I/O. Interrupt-on-change pin.
ICSP programming clock.
RB7
40
44
17
I/O
TTL
ST
Digital I/O. Interrupt-on-change pin.
ICSP programming data.
TABLE 1-3:
PIC18C4X2 PINOUT I/O DESCRIPTIONS (CONTINUED)
Pin Name
Pin Number
Pin
Type
Buffer
Type
Description
DIP
PLCC TQFP
Legend:
TTL = TTL compatible input
CMOS = CMOS compatible input or output
ST = Schmitt Trigger input with CMOS levels I = Input
O = Output
P = Power
OD = Open Drain (no P diode to VDD)