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单片机编程 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 ...
https://www.eeworm.com/dl/502/30328.html
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单片机编程 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 ...
https://www.eeworm.com/dl/502/30639.html
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单片机编程 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 ...
https://www.eeworm.com/dl/502/30689.html
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单片机编程 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 ...
https://www.eeworm.com/dl/502/30909.html
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单片机编程 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 ...
https://www.eeworm.com/dl/502/31009.html
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单片机编程 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 ...
https://www.eeworm.com/dl/502/31022.html
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单片机编程 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 ...
https://www.eeworm.com/dl/502/31063.html
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单片机编程 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 ...
https://www.eeworm.com/dl/502/31067.html
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单片机编程 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 ...
https://www.eeworm.com/dl/502/31355.html
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单片机编程 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 ...
https://www.eeworm.com/dl/502/31365.html
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