PIC18F44J10-I/ML【PDF 80/80 页】IC PIC MCU FLASH 8KX16 44QFN

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Sheet目录3875

76页 77页 78页 79页 [80页]

2009 Microchip Technology Inc.

DS39682E-page 7

PIC18F45J10 FAMILY

1.0

DEVICE OVERVIEW

This document contains device specific information for

the following devices:

This family offers the advantages of all PIC18

microcontrollers – namely, high computational perfor-

mance at an economical price. The PIC18F45J10 family

introduces design enhancements that make these micro-

controllers a logical choice for many high-performance,

power sensitive applications.

1.1

Core Features

1.1.1

LOW POWER

All of the devices in the PIC18F45J10 family

incorporate a range of features that can significantly

reduce power consumption during operation. Key

items include:

Alternate Run Modes: By clocking the controller

from the Timer1 source or the internal oscillator

block, power consumption during code execution

can be reduced by as much as 90%.

Multiple Idle Modes: The controller can also run

with its CPU core disabled but the peripherals still

active. In these states, power consumption can be

reduced even further, to as little as 4% of normal

operation requirements.

On-the-Fly Mode Switching: The power-

managed modes are invoked by user code during

operation, allowing the user to incorporate

power-saving ideas into their application’s software

design.

Low Consumption in Key Modules: The

power requirements for both Timer1 and the

Watchdog Timer are minimized. See

Section 24.0 “Electrical Characteristics”

for values.

1.1.2

MULTIPLE OSCILLATOR OPTIONS

AND FEATURES

All of the devices in the PIC18F45J10 family offer three

different oscillator options. These include:

Two Crystal modes, using crystals or ceramic

resonators

Two External Clock modes

INTRC source (approximately 31 kHz)

Besides its availability as a clock source, the internal

oscillator block provides a stable reference source that

gives the family additional features for robust

operation:

Fail-Safe Clock Monitor: This option constantly

monitors the main clock source against a refer-

ence signal provided by the internal oscillator. If a

clock failure occurs, the controller is switched to

the internal oscillator block, allowing for continued

low-speed operation or a safe application

shutdown.

Two-Speed Start-up: This option allows the

internal oscillator to serve as the clock source

from Power-on Reset, or wake-up from Sleep

mode, until the primary clock source is available.

PIC18F24J10

PIC18LF24J10

PIC18F25J10

PIC18LF25J10

PIC18F44J10

PIC18LF44J10

PIC18F45J10

PIC18LF45J10

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