Datasheet

PIC18F2XK20/4XK20
DS41303G-page 22  2010 Microchip Technology Inc.
PORTB is a bidirectional I/O port. PORTB can be
software programmed for internal weak pull-up on
each input.
RB0/INT0/FLT0/AN12
RB0
INT0
FLT0
AN12
33 9 8
I/O
I
I
I
TTL
ST
ST
Analog
Digital I/O
External interrupt 0
PWM Fault input for Enhanced CCP1
Analog input 12, ADC channel 12
RB1/INT1/AN10/
C12IN3-
RB1
INT1
AN10
C12IN3-
34 10 9
I/O
I
I
I
TTL
ST
Analog
Analog
Digital I/O
External interrupt 1
Analog input 10, ADC channel 10
Comparator C1 and C2 inverting input
RB2/INT2/AN8
RB2
INT2
AN8
35 11 10
I/O
I
I
TTL
ST
Analog
Digital I/O
External interrupt 2
Analog input 8, ADC channel 8
RB3/AN9/C12IN2-/
CCP2
RB3
AN9
C12IN23-
CCP2
(2)
36 12 11
I/O
I
I
I/O
TTL
Analog
Analog
ST
Digital I/O
Analog input 9, ADC channel 9
Comparator C1 and C2 inverting input
Capture 2 input/Compare 2 output/PWM 2 output
RB4/KBI0/AN11
RB4
KBI0
AN11
37 14 14
I/O
I
I
TTL
TTL
Analog
Digital I/O
Interrupt-on-change pin
Analog input 11, ADC channel 11
RB5/KBI1/PGM
RB5
KBI1
PGM
38 15 15
I/O
I
I/O
TTL
TTL
ST
Digital I/O
Interrupt-on-change pin
Low-Voltage ICSP™ Programming enable pin
RB6/KBI2/PGC
RB6
KBI2
PGC
39 16 16
I/O
I
I/O
TTL
TTL
ST
Digital I/O
Interrupt-on-change pin
In-Circuit Debugger and ICSP™ programming
clock pin
RB7/KBI3/PGD
RB7
KBI3
PGD
40 17 17
I/O
I
I/O
TTL
TTL
ST
Digital I/O
Interrupt-on-change pin
In-Circuit Debugger and ICSP™ programming
data pin
TABLE 1-3: PIC18F4XK20 PINOUT I/O DESCRIPTIONS (CONTINUED)
Pin Name
Pin Number
Pin
Type
Buffer
Type
Description
PDIP QFN 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
Note 1: Default assignment for CCP2 when Configuration bit CCP2MX is set.
2: Alternate assignment for CCP2 when Configuration bit CCP2MX is cleared.