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可编程逻辑 XAPP098 - Spartan FPGA低成本、高效率串行配置
This application note shows how to achieve low-cost, efficient serial configuration for Spartan FPGA designs. The approachrecommended here takes advantage of unused resources in a design, thereby reducing the cost, part count, memory size,and board space associated with the serial configuration ci ...
手册 Dual USB High-Side Power Switch
The SP2526A device is a dual +3.0V to +5.5V USB Supervisory Power Control Switch ideal
for self-powered and bus-powered Universal Serial Bus (USB) applications. Each switch has
low on-resistance (110mΩ typical) and can supply 500mA minimum. The fault currents are
limited to 1.0A typical and the fla ...
书籍 802.11n A Survival Guide
A decade ago, I first wrote that people moved, and networks needed to adapt to the
reality that people worked on the go. Of course, in those days, wireless LANs came
with a trade-off. Yes, you could use them while moving, but you had to trade a great
deal of throughput to get the mobility. Although ...
电源技术 DN458降压转换器简化低电压设计
 
Many system designers need an easy way to producea negative 3.3V power supply. In systems that alreadyhave a transformer, one option is to swap out the existingtransformer with one that has an additional secondarywinding. The problem with this solution is that manysystems now use transfor ...
电子书籍 Features • Compatible with MCS-51® Products • 8K Bytes of In-System Programmable (ISP
Features
&#8226 Compatible with MCS-51&reg Products
&#8226 8K Bytes of In-System Programmable (ISP) Flash Memory
– Endurance: 1000 Write/Erase Cycles
&#8226 4.0V to 5.5V Operating Range
&#8226 Fully Static Operation: 0 Hz to 33 MHz
&#8226 Three-level Program Memory Lock
&#8226 256 x 8-bit Internal ...
单片机开发 熟悉时钟芯片DS1302的使用 先设置时间和日期为：秒（08）
熟悉时钟芯片DS1302的使用
先设置时间和日期为：秒（08），分（58），时（05），日（13），月（01），年（55）
六位数码观显示时间和日期，默认显示的是时间，通过小数点区分时与分、分与秒
按下RB1键不放，显示切换到日期显示。
硬件要求：拨码开关S9全部置ON
拨码开关S5、S6全部置ON
拨码开关S1第7位置ON，其他位置 ...
其他 Introduction Computer security is undeniably important, and as new vulnerabilities are discovered a
Introduction
Computer security is undeniably important, and as new vulnerabilities are discovered and
exploited, the perceived need for new security solutions grows. "Trusted computing"
initiatives propose to solve some of today s security problems through hardware changes
to the personal computer. ...
单片机编程 单片机原理及应用实验指导（山东农业大学）
1.1MCS51实验系统安装与启动1.DVCC系列实验系统在出厂时均为51状态对DVCC—52196JH机型：SK1位1—5置ON位置，位6—10置OFF对DVCC—5286JH和DVCC—598JH机型：a.SK1位1—5置ON，位6—10置OFF；b.SK2位1—2置ON；c.SK3置ON；d.SK4置OFFe.卧式KBB置51、96位置,立式KBB1开关置51、88位置（只对DVCC—598JH/JH+）；f.DL1—DL4连1 ...
其他 智力抢答器： 1、竞赛开始时,主持人接通启动/停止开关(SA),指示灯HL1亮。 2、主持人按下开始抢答按钮(SB0)后,如果在10S内无人抢答,则指示灯HL2亮,表示抢答器自动撤销此次抢答.如果
智力抢答器：
1、竞赛开始时,主持人接通启动/停止开关(SA),指示灯HL1亮。
2、主持人按下开始抢答按钮(SB0)后,如果在10S内无人抢答,则指示灯HL2亮,表示抢答器自动撤销此次抢答.如果10S内有人抢答(按下按钮SB3,SB4,SB5),则最先按下抢答按钮的信号有效,相应抢答桌的抢答灯(HL1,HL2,HL3)亮。
3、当主持人确认抢答有效后,按下答 ...
技术资料 IGBT图解
le flows through MOS channel while Ih flows across PNP transistor Ih= a/(1-a) le, IE-le+lh=1/(1-a)' le Since IGBT has a long base PNP, a is mainly determined by ar si0 2ar= 1/cosh(1/La), La: ambipolar diff length a-0.5 (typical value)p MOSFET channel current (saturation), le=U"Cox"W(2"Lch)"(Vc-V ...