| 用于实时时钟的32.768kHz晶振电路分析与设计 |
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| 引用本文： | 程雯,戎蒙恬,李萍. 用于实时时钟的32.768kHz晶振电路分析与设计[J]. 信息技术, 2009, 33(1) |
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| 作者姓名： | 程雯 戎蒙恬 李萍 |
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| 作者单位： | 上海交通大学电子工程系,上海,200240 |
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| 基金项目： | 国家自然科学基金，上海市应用材料研究与发展基金 |
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| 摘 要： | 提出了一种采用晶振和比较器的结构实现实时时钟RTC的32.768kHz集成晶体振荡电路的方法.设计基于UMC 0.18um工艺参数,并使用Hspice对所设计的电路进行仿真,通过分析其各项性能指标,验证了电路具有起振时间短,波形稳定,功耗低,所占芯片面积小的特点.
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| 关 键 词： | 实时时钟 晶振 比较器 起振时间 功耗低 |
Analysis and design of 32.768kHz crystal oscillator for RTC |
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| CHENG Wen,RONG Meng-tian,LI Ping. Analysis and design of 32.768kHz crystal oscillator for RTC[J]. Information Technology, 2009, 33(1) |
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| Authors: | CHENG Wen RONG Meng-tian LI Ping |
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| Affiliation: | Department of Electronic Engineering;Shanghai Jiaotong University;Shanghai 200240;China |
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| Abstract: | A crystal oscillator whose frequency is 32.768kHz for RTC is presented,in which the crystal model and comparator are used.The practical circuit is implemented on UMC 0.18um process,and simulated by Hspice.According to analysis the results of the simulation,the improved oscillator circuit needs shorter startup time,generates more stable clock wave,consumes less power and occupies less areas in a real chip. |
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| Keywords: | realtime clock crystal oscillator comparator startup time low power dissipation |
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