PIC18LF448T-I/SP View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC18LF448T-I/SP

28/40-Pin High-Performance, Enhanced Flash Microcontrollers with CAN Module

Microchip Technology 

PIC18FXX8

TABLE 1-2: PIC18FXX8 PINOUT I/O DESCRIPTIONS

Pin Name

Pin Number

PIC18F248/258 PIC18F448/458

SPDIP, SOIC PDIP TQFP PLCC

Pin

Type

Buffer

Type

Description

MCLR/VPP

MCLR

VPP

NC

OSC1/CLKI

OSC1

CLKI

OSC2/CLKO/RA6

OSC2

CLKO

1

1

18

2

—

— 12, 13, 1, 17,

33, 34 28, 40

9

13

30

14

10

14

31

15

RA6

Legend:

TTL = TTL compatible input

ST = Schmitt Trigger input with CMOS levels

I = Input

P = Power

Master Clear (input) or

programming voltage (output).

I

ST

Master Clear (Reset) input.

This pin is an active low Reset

to the device.

P

—

Programming voltage input.

—

— These pins should be left

unconnected.

Oscillator crystal or external clock

input.

I CMOS/ST Oscillator crystal input or

external clock source input. ST

buffer when configured in RC

mode; otherwise, CMOS.

I CMOS

External clock source input.

Always associated with pin

function OSC1 (see OSC1/

CLKI, OSC2/CLKO pins).

Oscillator crystal or clock output.

O

—

Oscillator crystal output.

Connects to crystal or

resonator in Crystal Oscillator

mode.

O

—

In RC mode, OSC2 pin outputs

CLKO, which has 1/4 the

frequency of OSC1 and

denotes the instruction cycle

rate.

I/O TTL

General purpose I/O pin.

CMOS = CMOS compatible input or output

Analog = Analog input

O

= Output

OD = Open-Drain (no P diode to VDD)

DS41159E-page 10

© 2006 Microchip Technology Inc.

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