PIC18F2450 Datasheet, PDF (20/320 Pages) Microchip Technology – 28/40/44-Pin, High-Performance, 12 MIPS, Enhanced Flash, USB Microcontrollers with nanoWatt Technology

PIC18F2450/4450
TABLE 1-3: PIC18F4450 PINOUT I/O DESCRIPTIONS (CONTINUED)
Pin Name
Pin Number
Pin Buffer
PDIP QFN TQFP ^{Type Type}
Description
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 9
8
I/O TTL Digital I/O.
I Analog Analog input 12.
I
ST
External interrupt 0.
RB1/AN10/INT1
RB1
AN10
INT1
34 10 9
I/O TTL Digital I/O.
I Analog Analog input 10.
I
ST
External interrupt 1.
RB2/AN8/INT2/VMO 35 11 10
RB2
I/O TTL Digital I/O.
AN8
I Analog Analog input 8.
INT2
I
ST
External interrupt 2.
VMO
O—
External USB transceiver VMO output.
RB3/AN9/VPO
RB3
AN9
VPO
36 12 11
I/O TTL Digital I/O.
I Analog Analog input 9.
O—
External USB transceiver VPO output.
RB4/AN11/KBI0
RB4
AN11
KBI0
37 14 14
I/O TTL Digital I/O.
I Analog Analog input 11.
I TTL Interrupt-on-change pin.
RB5/KBI1/PGM
RB5
KBI1
PGM
38 15
15
I/O TTL
I TTL
I/O 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 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
40 17
17
I/O TTL
I TTL
I/O ST
Digital I/O.
Interrupt-on-change pin.
In-Circuit Debugger and ICSP programming data pin.
Legend:
Note 1:
TTL = TTL compatible input
CMOS = CMOS compatible input or output
ST = Schmitt Trigger input with CMOS levels I
= Input
O = Output
P
= Power
These pins are No Connect unless the ICPRT Configuration bit is set. For NC/ICPORTS, the pin is No
Connect unless ICPRT is set and the DEBUG Configuration bit is cleared.
DS39760A-page 18
Advance Information
© 2006 Microchip Technology Inc.