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C51的XTAL1,XTAL2的外接電源經(jīng)驗(yàn)

作者: 時(shí)間:2016-11-10 來源:網(wǎng)絡(luò) 收藏
C51XTAL1,XTAL2外接電源經(jīng)驗(yàn):

1.XTAL1 XTAL2 外接由兩個(gè)電容與晶振的并聯(lián)諧振時(shí)鐘電路

本文引用地址:http://butianyuan.cn/article/201611/317156.htm

C1,C2 選30pF,晶振選1.2-12MHz,設(shè)計(jì)時(shí),當(dāng)使晶振各電容盡可能的與C51單片機(jī)靠近,以保證穩(wěn)定可靠

2.或用外部振蕩器接至XTAL2,XTAL1接地,注意:XTAL1如果不接地的話,Electrical Rule Check會(huì)給出錯(cuò)誤如下下:

ELECTRICAL RULES CHECK REPORT
=============================
Design: D:proteus-designyx-designIO-1.DSN
Doc. no.:
Revision:
Author:
Created: 07/02/06
Modified: 07/02/06


UNDRIVEN: U1,XTAL1 (Input)

Netlist generated OK.
ERC errors found.



關(guān)鍵詞: C51XTAL1XTAL2外接電

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