PIC18F23K20-I/MV【PDF 13/234 页】IC MCU 8BIT 8KB FLASH 28UQFN

收藏本站

您好，
买卖IC网欢迎您。
请登录
免费注册

买卖IC网

Sheet目录3880

9页 10页 11页 12页 [13页]14页 15页 16页 17页

2010 Microchip Technology Inc.

DS41303G-page 11

PIC18F2XK20/4XK20

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

performance at an economical price – with the addition

of high-endurance, Flash program memory. On top of

these

features,

the

PIC18F2XK20/4XK20

family

introduces design enhancements that make these

microcontrollers a logical choice for many high-

performance, power sensitive applications.

1.1

New Core Features

1.1.1

nanoWatt TECHNOLOGY

All of the devices in the PIC18F2XK20/4XK20 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 26.0 “Electrical Characteristics”

for values.

1.1.2

MULTIPLE OSCILLATOR OPTIONS

AND FEATURES

All of the devices in the PIC18F2XK20/4XK20 family

offer ten different oscillator options, allowing users a

wide range of choices in developing application

hardware. These include:

Four Crystal modes, using crystals or ceramic

resonators

Two External Clock modes, offering the option of

using two pins (oscillator input and a divide-by-4

clock output) or one pin (oscillator input, with the

second pin reassigned as general I/O)

Two External RC Oscillator modes with the same

pin options as the External Clock modes

An internal oscillator block which contains a

16 MHz HFINTOSC oscillator and a 31 kHz

LFINTOSC oscillator which together provide 8

user selectable clock frequencies, from 31 kHz to

16 MHz. This option frees the two oscillator pins

for use as additional general purpose I/O.

A Phase Lock Loop (PLL) frequency multiplier,

available to both the high-speed crystal and inter-

nal oscillator modes, which allows clock speeds of

up to 64 MHz. Used with the internal oscillator, the

PLL gives users a complete selection of clock

speeds, from 31 kHz to 64 MHz – all without using

an external crystal or clock circuit.

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 LFINTOSC. If a clock

failure occurs, the controller is switched to the

internal oscillator block, allowing for continued

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.

PIC18F23K20

PIC18F43K20

PIC18F24K20

PIC18F44K20

PIC18F25K20

PIC18F45K20

PIC18F26K20

PIC18F46K20

发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

*型号	*数量	厂商	批号	封装

添加更多采购

采购需求

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

我的联系方式