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  • MT8870D DTMF解码芯片

    Features• Complete DTMF Receiver• Low power consumption• Internal gain setting amplifier• Adjustable guard time• Central office quality• Power-down mode• Inhibit mode• Backward compatible withMT8870C/MT8870C-1Applications• Receiver system for Bri ...

    /dl/30328.html

    标签: 8870D 8870 DTMF MT

    上传时间: 2013-11-20

    上传用户:mpquest

  • C51使用手册

    C51使用手册 .pdf 第二节内存区域(Memory Areas)1. Pragram Area由Code 说明可有多达64kBytes 的程序存储器2. Internal Data Memory:内部数据存储器可用以下关键字说明data 直接寻址区为内部RAM 的低128 字节00H 7FHidata 间接寻址区 包括整个内部RAM 区00H FFHbdata 可位寻址区 20H 2FH3. External Data Memory外部RAM 视 ...

    /dl/30639.html

    标签: C51 使用手册

    上传时间: 2013-11-19

    上传用户:busterman

  • CAT823 CAT824 CAT825 带看门狗和手动复位

    The CAT823, CAT824, and CAT825 provide basic reset and monitoring functions for the electronic systems. Each device monitors the system voltage and maintains a reset output until that voltage reaches the device’s specified trip value and then maintains the reset output active condition until the de ...

    /dl/30689.html

    标签: CAT 823 824 825

    上传时间: 2014-11-18

    上传用户:BOBOniu

  • XL6003 300KHz 36V Boost 3W LED

    The XL6003 regulator is fixed frequency PWM Boost (step-up) DC/DC converter, capable ofdriving 1050mA load current with excellent line and load regulation. The regulator is simple to use because it includes internal frequency compensation and a fixed-frequency oscillator so that it requires a minimu ...

    /dl/30909.html

    标签: Boost 6003 300 36V

    上传时间: 2013-11-07

    上传用户:xy@1314

  • PCA9549 Octal bus switch with

    The PCA9549 provides eight bits of high speed TTL-compatible bus switching controlledby the I2C-bus. The low ON-state resistance of the switch allows connections to be madewith minimal propagation delay. Any individual A to B channel or combination of channelscan be selected via the I2C-bus, determi ...

    /dl/31009.html

    标签: switch Octal 9549 with

    上传时间: 2014-11-22

    上传用户:xcy122677

  • PCA9548A 8 channel I2C bus swi

    The PCA9548A is an octal bidirectional translating switch controlled via the I2C-bus. TheSCL/SDA upstream pair fans out to eight downstream pairs, or channels. Any individualSCx/SDx channel or combination of channels can be selected, determined by thecontents of the programmable control register.An ...

    /dl/31022.html

    标签: channel 9548A 9548 PCA

    上传时间: 2013-10-13

    上传用户:bakdesec

  • Adding 32 KB of Serial SRAM to

    Although Stellaris microcontrollers have generous internal SRAM capabilities, certain applicationsmay have data storage requirements that exceed the 8 KB limit of the Stellaris LM3S8xx seriesdevices. Since microcontrollers do not have an external parallel data-bus, serial memory optionsmust be consi ...

    /dl/31063.html

    标签: Adding Serial SRAM 32

    上传时间: 2013-10-14

    上传用户:cxl274287265

  • Clocking Options for Stellaris

    The main oscillator allows either a crystal or single-ended input clock signal. Cost-sensitiveapplications typically use an external crystal with the on-chip oscillator circuit since it is the mostcost-effective solution. It is also possible to use the internal oscillator to clock the device after t ...

    /dl/31067.html

    标签: Stellaris Clocking Options for

    上传时间: 2013-10-14

    上传用户:pol123

  • 深入讨论HCS08的内部时钟源模块

    本文档将深入介绍内部时钟源模块(Internal ClockSource, ICS),该模块可以在部分HCS08 系列微控制器中找到。对HCS08 MCU 来说, ICS 模块不但是一个非常灵活的时钟源,而且对于该系列中更小、更低成本的MCU来说非常经济。ICS 包括锁频环、内部时钟参考、外部振荡器和时钟选择子模块。这些子模块组合可以提供多种时钟模式 ...

    /dl/31355.html

    标签: HCS 08 时钟源 模块

    上传时间: 2013-11-08

    上传用户:zhuoying119

  • Emulating a synchronous serial

    The C500 microcontroller family usually provides only one on-chip synchronous serialchannel (SSC). If a second SSC is required, an emulation of the missing interface mayhelp to avoid an external hardware solution with additional electronic components.The solution presented in this paper and in the a ...

    /dl/31365.html

    标签: synchronous Emulating serial

    上传时间: 2014-01-31

    上传用户:z1191176801