超纯水制造装置

由于超大规模集成电路的飞速发展，使超纯水水质要求不断提高。并提出了一些新的项目要求。半导体行业目前是处在64M位时代，不久即将进入256M位的新时代，集成度每前进一步，杂质要求减少到原有标准的1／2～1／10(大约)。水质要求值和水质评价技术的发展，不能超越实际，更不能提出不切实际的苛刻要求，水质分析应以生产要求的下限值做为对保证水质的标准。对水中杂质的存在和对器件影响，以及彼此之间的因果关系不清楚的情况下盲目制定降低杂质指标是不可取的。     

嵌入式系统

英飞凌全新8位．16位和32位工业微控制器产品 英飞凌面向工业应用推出采用嵌入式闪存的全新微控制器。8位XC800系列新增了XC864，16位XE166系列新增了XE162M、XE164M和XE167M，32位Tricore系列新增了TC1167和TC1197。所有这些微控制器都被设计用于满足不同工业驱动应用的性能和可靠性要求。8位XC800系列符合家用电器功能安全规范要求EN／IEC60335-1 Class B标准。XE166M系列用于实时工业驱动应用，例如伺服驱动器、暖通空调压缩机和鼓风机。     

二相编码信号旁瓣抑制的频域处理方法

本文研究了雷达脉冲压缩信号中二相编码的距离旁瓣抑制问题，分析了二相码的频谱结构，采用频域数字处理技术，提出了一种基于网络综合的旁瓣抑制滤波器（SSF）的频域设计方法。并以15位M编码为例，对SSF的处理性能进行仿真分析。通过仿真实验表明，使用这种方法，能够达到非常理想的副瓣指标。     

新型8位单片机M68HC08

M68HC08是Motorola公司在90年代末推出的一种高性价比的8位单片机系列。它的最早代表为MC68HC708XL36。以后随着集成电路IC技术的提高，Motorola公司引入了FLASH(闪存)技术，并使用了模块化设计方法，设计生产了新一代M68HC08单片机。M68HC08单片机的CPU比以前的M68HC05单片机有较大程度的改进，增加了高8位变址寄存器H，堆栈指针SP和程序计数器PC也都改为16位，并增加了8种寻址方式，包括SP变址，变址加一等。增加了78条指令，具有可不通过寄存器的存储器直接传送指令，16位读写加1指令，除法指令，SP变址寻址，比较转移，…     

混合信号系统的噪声问题

ADC14155(14位、每秒155M采样)和ADC08D1500(双路8位、每秒1.5G采样)对信号噪声的处理要求尤其苛刻.     

莫托罗拉公司开始批量生产具有高速存取时间的1M/256kSRAM

莫托罗拉公司现已开发出实现了存取时间高速化的1M／256KSRAM5个品种，预计在94年第一季度后半期开始批量生产。1M产品共有下列3个品种：128K×8位的“MCM6726A”、256K×4位的“MCM6728A”“MCM6729A（内含输出启动功能）”。256K产品有如下2个品种：32K×8位的“MCM6706R”、64K×4位的“MCM6709R”。在工艺中采用了BiCMOS技术，在存取时间上，1M产品为8ns，256K产品为6ns，实现了较理想的高速存取时间。另外，为了确保可靠性，备有中央电源和I／O管脚，实现了低噪声、全静态启动，与TTL可进行互换。封装形式为SOJ，M…     

光刻胶处理系统

<正>半导体集成电路的大容量和高密度化异常惊人,以存储器为例,1M位的DRAM已经批量生产,而4M位的DRAM也有试制品发表。光刻技术是这些产品图形微细加工的关键之一。生产高密度器件要有高的成品率,就要提高膜和线宽的均匀性及无尘化等,所以要求改进光刻胶处理装置。在此介绍光刻胶处理装置近况并叙述今后发展的有关动向。     

微控制器包含3信道CAN控制器

M32C／88系列微控制器带有一个高性能的CPU芯核和一个三信道CAN控制器，提供512KB的程序闪存和4KB的数据闪存，最高工作频率为32MHz，执行指令的最短时间是31．2ns，处理性能达到32MIPS。外设包括16位定时器、     

基于32位精简指令集架构的单片机AT91M42800A的设计与应用

介绍了ATMEL公司生产的基于32位精简指令集(RISC)架构的单片机AT91M42800A的特点，提出了一种基于AT91M42800A的应用设计方案，给出该设计的硬件原理图，同时针对AT91M42800A的存储器空间分配问题，给出了分散装载的程序代码举例，从而为基于AT91M42800A的嵌入式系统设计提供了一个思路。     

一种改进的超混沌图像保密算法

提出一种使用时滞超混沌M—G模型加密图像信息的保密算法，由于系统是基于参数辩识的，所以使得系统不需要混沌同步也可以实现混沌的保密通信，同时本算法引入位图像加密的思想，并对加密图像信息进行加密前处理，使得图像信息能够应用M—G超混沌模型进行加解密。此系统结构简单，实用性强，不需要混沌同步。试验和理论分析表明加密效果是令人满意的。     

Layer‐by‐Layer Fabrication and Characterization of Gold‐Nanoparticle/Myoglobin Nanocomposite Films

Multilayer thin films of ～ 7 nm diameter gold nanoparticles (GNPs) linked with horse heart myoglobin (Mb) are fabricated, for the first time, by layer‐by‐layer (LbL) assembly on glass slides, and silicon and plastic substrates. The GNP/Mb nanocomposite films show sharp surface plasmon resonance (SPR) absorption bands that are used to follow the LbL growth of the film and to determine the kinetics of GNP adsorption on the Mb‐modified surface. The GNP/Mb nanocomposite films are characterized using atomic force microscopy, transmission electron microscopy, polarized UV‐vis spectroscopy, and spectroscopic ellipsometry. The GNPs in the multilayer films are spatially separated from one another, and interparticle interactions remain in the film, making it optically anisotropic. The GNP/Mb nanocomposite films are stable in air at temperatures up to 100 °C, and can withstand successive immersions in strongly acidic and basic solutions. The SPR absorption band of the GNP/Mb nanocomposite film in air exhibits a red‐shift in the wavelength maximum and an increase in the maximum absorbance relative to that in water. This result, which is in contrast to that observed with a GNP monolayer on an aminosilane‐functionalized substrate, suggests the shrinkage in air and swelling in water of Mb molecules embedded in the nanocomposite film.     

Services and supporting architecture of the ESA OBP system

The ESA on-board processing (OBP) satellite system using on-board regeneration and baseband circuit switching has been designed to provide ISDN connectivity and services to users on a Pan-European basis. It is thus seen at its periphery as a 2 Mb/s primary rate access, hence allowing for the interconnection of equipment and terminals compatible with this standard interface. Among the various possible network architectures that the system could support, the business-oriented closed networks look most promising. It has therefore been retained as a prime design driver for OBP system developments. Optionally, connectivity can be offered in an optimized manner to pure data networks, e.g. for LAN-to-LAN interconnection at rates up to 1 Mb/s. In the paper, communication services and networking capabilities offered by the system are briefly reviewed. The internal characteristics of the satellite system allowing for such capabilities are then reviewed and the corresponding performance outlined. The system is shown to be compatible with critical CCITT performance criteria.     

深亚微米工艺用二次纯水系统

本文介绍了深亚微米工艺用二次超纯水系统主要工艺流程及其各部分的作用。比较了一次纯水电阻率,二次纯水电阻率及二次纯水 TOC 含量的相互关系。讨论了半导体集成电路制造工艺对超纯水的水质要求以及水中杂质对半导体工艺的影响。     

反渗透技术在彩管行业纯水制造中的应用

介绍了反渗透技术在彩管行业纯水制造中的应用。运用实例表明，采用反渗透技术的纯水生产线运行稳定，出水水质好。     

Gamma-ray radiation hardened properties of pure silica coresingle-mode fiber and its data link system in radioactive environments

The radiation resistances of pure silica core single-mode optical fiber (Si-SMF) and its data link module at 1.30 μm were investigated. It was found that the induced loss of fibers exposed to γ-rays at a low dose rate was proportional to the 0.54 power of total dose from the result of a low dose rate irradiation test for 3 years, and the induced loss for 40 years aging at 1 R/h was estimated to be 1.8 dB/km. It was ascertained that transmission is achievable at a bit rate of 125 Mb/s even under high dose rate irradiation to a total dose of 10⁸ R, which corresponds to the postulated maximum γ-ray exposure in nuclear power plants     

155Mb／s时分光交换系统

本文介绍了国内第一个１５５Ｍｂ／ｓ时分光交换实验系统。系统以新型半导体光器件－半导体光开关门为核心构成，传输速度为１５５Ｍｂ／ｓ。     

基于Elman神经网络的地层水污染率近红外光谱实时测量方法

在钻井过程中,水基钻井泥浆会透过泥饼渗入地层从而污染地层水。为了取得纯净的地层水样品,需要对其污染程度进行实时监测。取样前,流体由水基泥浆滤液逐渐过渡到纯净地层水,通过获取滤液、纯地层水以及混合流体的吸光度可实时计算地层水受到污染的程度。鉴于井下地层水污染率在线监测可看作时间序列预测问题,采用了Elman神经网络模型对吸光度数据进行训练,从而预测纯地层水吸光度。采用海上实井数据进行了验证,将基于Elman神经网络预测得到的地层水吸光度与泵抽初期采集的钻井液泥浆滤液吸光度相结合,可以计算出实时的地层水污染率,并将其与实验室水分析结果进行了对比。结果表明,它们的一致性很好。与传统算法相比,新方法高效可靠,具有广泛的适用性和较好的应用价值。     

基于Modem的纯净水电话定购与查询系统设计

文中介绍了纯净水电话定购与查询系统的基本原理，结合Modem开发以及数据库技术，通过软件系统开发，实现了纯净水的电话定购和查询业务。     

Impact of particles in ultra pure water on random yield loss in IC production

The influence of environmental particle contamination on offline measured defects and manufacturing yield in integrated circuits is discussed. One of the sources of particle contamination is ultra pure water used in different production tools at different stages of processing. Particle count data measured in ultra pure water is compared with the offline defects caused by process tools and the relation has been statistically confirmed. Particle count data is also compared with the defect density of large size products. An impact of particle contamination on yield of 4-6% has been found. In this study, fundamentals are provided to define the meaningful specifications of ultra pure water for wafer fabrication.     

Prospects for Improvement of Interplanetary Laser Communication Data Rates by 30 dB

NASA's Mars laser communications demonstration (MLCD) project (since discontinued) was designed to achieve data rates greater than 1 Mb/s from the farthest Mars range and greater than 30 Mb/s from the nearest Mars range. We present here pathways whereby ongoing optical technology advances should allow 30 dB of increased data rates relative to MLCD by 2020. In other words, technical advances should soon allow the return of deep-space data at rates of 1 Gb/s from the maximum Mars range, 100 Mb/s from Jupiter distances, and 10 Mb/s from Uranus, all many orders of magnitude greater than present radio-frequency capabilities. The potential for realizing the stated capability with less than a three times increase in dc power required from the spacecraft and no increase in payload mass is discussed.