Information

PIC18F8722 FAMILY
DS39646C-page 138 © 2008 Microchip Technology Inc.
TABLE 11-3: PORTB FUNCTIONS
Pin Name Function
TRIS
Setting
I/O
I/O
Type
Description
RB0/INT0/FLT0 RB0 0 O DIG LATB<0> data output.
1 I TTL PORTB<0> data input; weak pull-up when RBPU
bit is cleared.
INT0 1 I ST External interrupt 0 input.
FLT0 1 I ST ECCPx PWM Fault input, enabled in software.
RB1/INT1 RB1 0 O DIG LATB<1> data output.
1 I TTL PORTB<1> data input; weak pull-up when RBPU
bit is cleared.
INT1 1 I ST External interrupt 1 input.
RB2/INT2 RB2 0 O DIG LATB<2> data output.
1 I TTL PORTB<2> data input; weak pull-up when RBPU
bit is cleared.
INT2 1 I ST External interrupt 2 input.
RB3/INT3/
ECCP2/P2A
RB3 0 O DIG LATB<3> data output.
1 I TTL PORTB<3> data input; weak pull-up when RBPU
bit is cleared and
capture input is disabled.
INT3 1 I ST External interrupt 3 input.
ECCP2
(1)
0 O DIG ECCP2 compare output and ECCP2 PWM output. Takes priority over
port data.
1 I ST ECCP2 capture input.
P2A
(1)
0 O DIG ECCP2 Enhanced PWM output, channel A. May be configured for
tri-state during Enhanced PWM shutdown events. Takes priority over
port data.
RB4/KBI0 RB4 0 O DIG LATB<4> data output.
1 I TTL PORTB<4> data input; weak pull-up when RBPU
bit is cleared.
KBI0 1 I TTL Interrupt-on-pin change.
RB5/KBI1/PGM RB5 0 O DIG LATB<5> data output
1 I TTL PORTB<5> data input; weak pull-up when RBPU
bit is cleared.
KBI1 1 I TTL Interrupt-on-pin change.
PGM x I ST Single-Supply Programming mode entry (ICSP). Enabled by LVP
Configuration bit; all other pin functions disabled.
RB6/KBI2/PGC RB6 0 O DIG LATB<6> data output.
1 I TTL PORTB<6> data input; weak pull-up when RBPU
bit is cleared.
KBI2 1 I TTL Interrupt-on-pin change.
PGC x I ST Serial execution (ICSP™) clock input for ICSP and ICD operation
(2)
.
RB7/KBI3/PGD RB7 0 O DIG LATB<7> data output.
1 I TTL PORTB<7> data input; weak pull-up when RBPU
bit is cleared.
KBI3 1 I TTL Interrupt-on-pin change.
PGD x O DIG Serial execution data output for ICSP and ICD operation
(2)
.
x I ST Serial execution data input for ICSP and ICD operation
(2)
.
Legend: PWR = Power Supply, O = Output, I = Input, ANA = Analog Signal, DIG = Digital Output, ST = Schmitt Buffer Input,
TTL = TTL Buffer Input, x = Don’t care (TRIS bit does not affect port direction or is overridden for this option).
Note 1: Alternate assignment for ECCP2 when the CCP2MX Configuration bit is cleared (Microprocessor, Extended
Microcontroller and Microcontroller with Boot Block modes, 80-pin devices only). Default assignment is RC1.
2: All other pin functions are disabled when ICSP or ICD operations are enabled.