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          EEPW首頁 > 嵌入式系統(tǒng) > 設(shè)計(jì)應(yīng)用 > C51的XTAL1,XTAL2的外接電源經(jīng)驗(yàn)

          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 外接由兩個電容與晶振的并聯(lián)諧振時(shí)鐘電路

          本文引用地址:http://www.ex-cimer.com/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會給出錯誤如下下:

          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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