共查询到20条相似文献,搜索用时 453 毫秒
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采用Chartered 0.35μm EEPROM工艺设计并实现了一个适用于无源射频电子标签的256位超低功耗EEPROM存储器.芯片实现了块编程和擦写功能,并通过优化敏感放大器和控制逻辑的结构,实现了读存储器时间和功耗的最优化.最后给出了芯片在编程/擦写/读操作情况下的功耗测试结果.在电源电压为1.8V,数据率为640kHz时,EEPROM编程/擦写的平均功耗约为68μA,读操作平均功耗约为0.6μA. 相似文献
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《固体电子学研究与进展》2013,(6)
稳定的非挥发性存储器(Non-volatile memory,NVM)是射频识别标签系统中的重要组成部分,作为系统的信息承载体,用于存储用户或产品的基本信息。NVM的性能和造价是约束其发展的主要因素,为了改善非挥发性存储器的性能和降低其成本,文中基于传统的非挥发性存储器EEPROM,采用UMC 0.18μm标准CMOS工艺,优化设计了一个存储容量为256位高性能低成本的单栅非挥发性存储器,从工作电压、效率、速度和功耗的角度,对存储单元进行了隔离保护处理,改进了电荷泵的升压模块和稳压模块,采用电压检测型灵敏放大器。电源电压1.8V,编程电流为42μA,读电流为2μA,编程时间为5ms/bit,读速率为2Mb/s。 相似文献
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面向无源超高频射频识别标签芯片设计了一种低成本的非易失存储器(NVM)。采用PMOS晶体管实现存储单元,制造工艺与标准CMOS工艺兼容,可以降低制造成本。提出了一种新型的操作模式,可减轻写操作对栅氧的破坏。存储器中的所有存储单元共享一个灵敏放大器,数据通过共享的灵敏放大器依次串行读出,这样既节省了面积,又降低了读操作的功耗。基于0.18μm标准CMOS工艺设计实现了存储容量为1 kbit的存储器芯片,该存储器的核心面积为0.095 mm2,并完成了实测。实测结果表明,电源电压为1.2 V,读速率为1 Mb/s时,功耗为1.08μW;写速率为3.2 kb/s时,功耗为44μW。 相似文献
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GEMNET is a generalization of shuffle-exchange networks and it can represent a family of network structures (including ShuffleNet and de Bruijn graph) for an arbitrary number of nodes. GEMNET employs a regular interconnection graph with highly desirable properties such as small nodal degree, simple routing, small diameter, and growth capability (viz. scalability). GEMNET can serve as a logical (virtual), packet-switched, multihop topology which can be employed for constructing the next generation of lightwave networks using wavelength-division multiplexing (WDM). Various properties of GEMNET are studied 相似文献
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A comprehensive compilation of various thermodynamic data required for a complete analysis of copper matte converting reactions
is presented. The data comprise estimated free energies of formation for such gases as SeO, SeS, TeO, TeS, BiO, BiS, SbO,
SbS, AsO, and AsS, as well as activity coefficients in dilute copper alloys and vapor pressures of various elements and compounds.
The volatilization of minor elements in steady-state reactors comprising gas and several condensed phases is mathematically
formulated, and a parameter which governs the volatilization in such reactors is defined and named volatilization constant.
The vapor pressures of various volatile species are calculated thermodynamically for the Noranda Process reactor by assuming
equilibrium conditions. The volatilization constants of various minor elements are expressed explicitly as functions of oxygen
and sulfur activities.
Formerly Associate Professor, Department of Metallurgical Engineering, University of Utah, Salt Lake City, UT 相似文献
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Chi-Yang Chang Wei-Chen Hsu 《Microwave Theory and Techniques》2002,50(11):2527-2536
This paper presents a novel concept of a square-shaped dielectric-waveguide resonator, which can easily realize a dielectric-waveguide cross-coupled filter or a dielectric-waveguide dual-mode filter, using the conventional printed circuit board (PCB) process. This planar dielectric-waveguide resonator has a higher Q value than a microstrip resonator. The physical mechanisms of both single- and dual-mode filters are elucidated. Some new coupling structures are developed for undergoing the PCB process. Filter design procedures are detailed. Design curves for the coupling coefficients of internal- and external-coupling structures are determined by full-wave finite-element-method electromagnetic calculations. Measurement results are highly consistent with theory for all trial filters. This study offers an effective means of producing low-cost high-performance planar circuit filters. 相似文献
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The use of clear, concise, and unambiguous language in telecommunications engineering is vital to communicate a desired meaning and understanding. Terminology should be based on rigorous engineering principles and traceable to well known and dependable sources. This article deals with four everyday terms commonly encountered in the popular semi-technical press as well as in serious engineering periodicals. The misuse of these and other terms can lead to low-balled cost proposals, court litigation, and patent infringement cases. Imagine how an engineering student can be confused when she/he typically encounters bandwidth measured in bits per second 相似文献
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本文简述了在人工智能时代,我们的“微机原理与接口技术”课程教学团队基于线下线上混合教学模式,开展微机原理与接口技术的关键知识单元讲解的同时,实时课程思政,讲好微机原理的新故事;如何培养学生自主探索式学习技能,在课程基本知识单元学习的基础上扩展延伸相关深度学习、GPU技术、Python语言、FPGA技术等人工智能方面的知识单元的探究与学习,使得课程学习与人工智能的前沿发展相结合,理论联系实际,吸引和培养学生对该课程学习的兴趣和整体知识面扩展,这对于我们培养具有自主创新的科学探索精神的高素质专业人才具有重要的现实意义。 相似文献
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