
2001 Microchip Technology Inc.
DS39026C-page 11
PIC18CXX2
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
21
I/O
I
TTL
ST
Digital I/O.
External Interrupt 0.
RB1/INT1
RB1
INT1
22
I/O
I
TTL
ST
External Interrupt 1.
RB2/INT2
RB2
INT2
23
I/O
I
TTL
ST
Digital I/O.
External Interrupt 2.
RB3/CCP2
RB3
CCP2
24
I/O
TTL
ST
Digital I/O.
Capture2 input, Compare2 output, PWM2 output.
RB4
25
I/O
TTL
Digital I/O.
Interrupt-on-change pin.
RB5
26
I/O
TTL
Digital I/O.
Interrupt-on-change pin.
RB6
27
I/O
I
TTL
ST
Digital I/O.
Interrupt-on-change pin.
ICSP programming clock.
RB7
28
I/O
TTL
ST
Digital I/O.
Interrupt-on-change pin.
ICSP programming data.
TABLE 1-2:
PIC18C2X2 PINOUT I/O DESCRIPTIONS (CONTINUED)
Pin Name
Pin Number
Pin
Type
Buffer
Type
Description
DIP
SOIC
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)