查询词典 chip

Pinout: C High-performance 32-bit RISC Architecture C High-density 16-bit Instruction Set C Leader in MIPS/Watt C Little-endian C Embedded ICE (In-circuit Emulation) 8-, 16- and 32-bit Read and Write Support 256K Bytes of On-chip SRAM C 32-bit Data Bus C Single-clock Cycle Access Fully Programmable External Bus Interface C Maximum External Address Space of 64M Bytes C Up to Eight Chip Selects C Software Programmable 8/16-bit External Data Bus Eight-level Priority, Individually Maskable, Vectored Interrupt Controller C Four External Interrupts, including a High-priority, Low-latency Interrupt Request 32 Programmable I/O Lines Three-channel 16-bit Timer/Counter C Three External Clock Inputs C Two Multi-purpose I/O Pins per Channel Two USARTs C Two Dedicated Peripheral Data Controller Channels per USART Programmable Watchdog Timer Advanced Power-saving Features C CPU and Peripheral Can be Deactivated Individually Fully Static Operation: C 0 Hz to 75 MHz Internal Frequency Range at VDDCORE = 1.8V, 85C 2.7V to 3.6V I/O Operating Range 1.65V to 1.95V Core Operating Range -40C to +85C Temperature Range Available in 100-lead TQFP Package

M5L8253P-5引脚说明： C型高性能32位RISC架构C高密度以MIPS /瓦C小端C十六位指令集C领袖嵌入式冰8 - 16 -位和32位的读写支持256K的片上SRAM的 32位数据总线C单时钟周期存取字节完全可编程的外部总线接口C最大的外部地址空间的64M字节多达8个C芯片选择C软件可编程8位外部数据总线8级优先级，独立可屏蔽，向量中断控制器C四外部中断，其中包括一个高优先级，低延迟中断要求32个可编程I / O口线三通道16位定时器/计数器C三个外部时钟输入C两多用途I / O引脚每通道2个通用同步C两专用外设数据控制器通道每个USART可编程看门狗定时器先进的节能特性 CPU和外设可停用独立全静态工作中：C 0 Hz至75 MHz的频率范围内的VDDCORE = 1.8，85℃2.7V到3.6VI / O的操作1.65V到1.95V范围核心工作电压范围在- 40C至+85 C温度范围内使用的100引脚TQFP封装

Baseband signal can control by serialeach that one-chip computer produce phase place , DDS of generatorcontrol and bring in realizing, and the phase locking ring of theintegration can produce the signal carrier within AD9856 chip, itsfrequency is set up through the interface of the outside one-chipcomputer.

基带信号可以由单片机产生的串行码元控制DDS发生器的相位控制端来实现，而AD9856芯片内部集成的锁相环可以产生载波，其频率也是通过外部单片机的接口来设置。

Secondly, whole-chip ESD protection net is put forward. Input protection circuits, output protection circuits and circuits between high-voltage ground and low-voltage ground are decided on the base of structure and process of PDP drive chip. Moreover, the design of low-voltage VDD-to-VSS ESD protection circuits is detailed and the circuit is simulated with HSpice. Finally, the characteristic of high-voltage device after avalanche breakdown is simulated and analyzed with Tuprem-4 and MEDICI, and it is concluded that high-voltage device can stand high voltage and large current, so the low-voltage VDD-to-VSS ESD protection circuits can be applied to high-voltage VDD-to-VSS ESD protection.

随后提出PDP驱动芯片全芯片ESD保护网络的方案，并根据PDP驱动芯片的结构和制造工艺，介绍了输入部分、输出部分及高低压接口部分的ESD保护电路，然后重点分析了低压电源和地之间ESD保护电路的设计并用Hspice进行了模拟，最后使用Tuprem-4和MEDICI模拟了高压器件在雪崩击穿之后的电压电流和电场分布特性，得出高压器件本身可以承受一定的ESD脉冲，从而将低压电源和地之间的ESD保护电路应用到高压电源和地之间。

Irai specializes in producting and selling full setts of SMT electronic equipments such as full-automatic printer,chip mounter, lead-free reflow solder oven,and it also supplies second-hand chip mounters from the abroad, with brand panasonic,JUKI,FUJI,YAMAHA,SEMENS,SANYO,SAMSUNG etc.

IRAI专业生产并销售全自动印刷机、全自动贴片机、无铅回流焊等SMT整套电子设备，拥有中外驰名商标Mirai、 HARUTA，是世界最具现代化技术、最有实力的专业SMT设备生产商之一，同时也是中国唯一能够生产SMT一站式成套贴装设备的品牌企业。

In the first part of this research, a thermal chip was wised for developing an automatic experimental and measurement system to simulate the temperature arising during the real operation condition of a chip.

研究的第一部份，应用热晶片发展一套自动化实验及量测系统，模拟真实封装体工作时内部之升温情形。

Because the chip selection signal is inputted in the common chip selection pads, independent wirings for the respective chips are not required.

芯片选择信号输入到共用的芯片选择焊盘，因此，不需要针对各芯片的各自的配线。

Secondly, Chip venders should also consider the post-production cost of chips, because chip cost itself is not the only factor for a system.

其次，芯片厂家也要考虑芯片的后期成本，芯片的本身成本并不是唯一的因素。

On-chip passive elements such as spiral inductors and varactors make on-chip implementation of LC-tank voltage-controlled oscillators easy.

无源器件的片上实现问题的解决，使得本机振荡器的单片集成成为可能。

With the rapid advancement of process and technology, especially the realization of on-chip passive elements such as inductors and varactors, the on-chip implementation of voltage-controlled oscillators which are necessary in wireless transceivers has become easy.

在工艺技术的飞速进步下，尤其是电感和变容管等无源器件片上实现问题的解决，压控振荡器已经可以实现单片集成，这对降低收发机的成本十分关键。

The test of Transputer chip T800 points out that the chip performance for symbolic processing should not be overrated.

对Transputer芯片T800的测试提示人们不可过高地估价Transputer芯片用于符号处理时的性能表现。

Must have Coordination and negotiation skill, flexible ideas, and be punctilious person.

必须具备较好的协调与谈判能力，头脑灵活，工作认真仔细

Result: 18 patients are all with simple eye.The pigment mole lies in nasal and temple sides of the ball conjunctiva,in which 2 lie in lacrimal caruncle and semilunar plica.

结果：18例患者均为单眼，色素痣大多数位于内外侧睑裂部球结膜面，2例位于泪阜及半月皱襞，经激光治疗后，10例色素痣消失，有5例行再次激光后消失，2例行第三次激光后消失，1例第四次激光后消失。