PIC18F2331 Datasheet, PDF (15/396 Pages) Microchip Technology – 28/40/44-Pin Enhanced Flash Microcontrollers with nanoWatt Technology, High Performance PWM and A/D

PIC18F2331/2431/4331/4431
TABLE 1-2: PIC18F2331/2431 PINOUT I/O DESCRIPTIONS (CONTINUED)
Pin Name
Pin
Number ^{Pin Buffer}
Type Type
DIP SOIC
Description
PORTB is a bidirectional I/O port. PORTB can be software
programmed for internal weak pull-ups on all inputs.
RB0/PWM0
RB0
PWM0
21 21
I/O TTL
O TTL
Digital I/O.
PWM output 0.
RB1/PWM1
RB1
PWM1
22 22
I/O TTL
O TTL
Digital I/O.
PWM output 1.
RB2/PWM2
RB2
PWM2
23 23
I/O TTL
O TTL
Digital I/O.
PWM output 2.
RB3/PWM3
RB3
PWM3
24 24
I/O TTL
O TTL
Digital I/O.
PWM output 3.
RB4/KBI0/PWM5
RB4
KBI0
PWM5
25 25
I/O TTL
I TTL
O TTL
Digital I/O.
Interrupt-on-change pin.
PWM output 5.
RB5/KBI1/PWM4/PGM
RB5
KBI1
PWM4
PGM
26 26
I/O TTL
I TTL
O TTL
I/O ST
Digital I/O.
Interrupt-on-change pin.
PWM output 4.
Low-voltage ICSP programming entry pin.
RB6/KBI2/PGC
RB6
KBI2
PGC
27 27
I/O TTL
I TTL
I/O ST
Digital I/O.
Interrupt-on-change pin.
In-Circuit Debugger and ICSP programming clock pin.
RB7/KBI3/PGD
RB7
KBI3
PGD
28 28
I/O TTL
I TTL
I/O ST
Digital I/O.
Interrupt-on-change pin.
In-Circuit Debugger and ICSP programming data pin.
Legend: TTL
ST
O
OD
= TTL compatible input
= Schmitt Trigger input with CMOS levels
= Output
= Open-Drain (no diode to VDD)
CMOS = CMOS compatible input or output
I
= Input
P
= Power
 2003 Microchip Technology Inc.
Preliminary
DS39616B-page 13