Datasheet

© 2007 Microchip Technology Inc. DS39599G-page 15
PIC18F2220/2320/4220/4320
PORTB is a bidirectional I/O port. PORTB can be software
programmed for internal weak pull-ups on all inputs.
RB0/AN12/INT0
RB0
AN12
INT0
33 8 9
I/O
I
I
TTL
Analog
ST
Digital I/O.
Analog input 12.
External interrupt 0.
RB1/AN10/INT1
RB1
AN10
INT1
34 9 10
I/O
I
I
TTL
Analog
ST
Digital I/O.
Analog input 10.
External interrupt 1.
RB2/AN8/INT2
RB2
AN8
INT2
35 10 11
I/O
I
I
TTL
Analog
ST
Digital I/O.
Analog input 8.
External interrupt 2.
RB3/AN9/CCP2
RB3
AN9
CCP2
(1)
36 11 12
I/O
I
I/O
TTL
Analog
ST
Digital I/O.
Analog input 9.
Capture 2 input, Compare 2 output, PWM2 output.
RB4/AN11/KBI0
RB4
AN11
KBI0
37 14 14
I/O
I
I
TTL
Analog
TTL
Digital I/O.
Analog input 11.
Interrupt-on-change pin.
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: PIC18F4220/4320 PINOUT I/O DESCRIPTIONS (CONTINUED)
Pin Name
Pin Number
Pin
Type
Buffer
Type
Description
PDIP TQFP QFN
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 diode to V
DD)
Note 1: Alternate assignment for CCP2 when CCP2MX is cleared.
2: Default assignment for CCP2 when CCP2MX (CONFIG3H<0>) is set.