Description: This program demonstrates a half-duplex 9600-baud UART using // Timer_A3 using no XTAL and an external resistor for DCO ROSC. DCO used for // TACLK UART baud generation. The program will wait in LPM4, echoing back // a received character using 8N1 protocol. On valid RX character, the // character is echoed back. // Using a 100k resistor on ROSC, with default DCO setting, set DCOCLK ~ 2MHz. // ACLK = n/a, MCLK = SMCLK ~2MHz DCOCLK
標(biāo)簽： using demonstrates Description half-duplex
上傳時(shí)間： 2014-01-14
上傳用戶(hù)：cuiyashuo
74LS393和Intel8253中斷應(yīng)用 采用74LS393對(duì)實(shí)驗(yàn)箱中8MHz時(shí)鐘進(jìn)行分頻處理，從中獲得低于2MHz的時(shí)鐘信號(hào)￠，并將時(shí)鐘信號(hào)￠輸入給Intel8253的某通道C。要求通道C的輸出信號(hào)作為Intel8259的可屏蔽中斷請(qǐng)求IRQ2，使得中央處理器每隔2秒鐘中斷一次，中斷程序?qū)⒅袛啻螖?shù)采用二進(jìn)制方式在8個(gè)發(fā)光二極管中顯示出來(lái)
上傳時(shí)間： 2013-12-11
上傳用戶(hù)：jackgao
低頻頻率計(jì) 實(shí)例目的：學(xué)習(xí)定時(shí)器、計(jì)數(shù)器、中斷應(yīng)用 說(shuō)明：選用24MHz的晶體，主頻可達(dá)2MHz。用T1產(chǎn)生100us的時(shí)標(biāo)，T0作信號(hào)脈沖計(jì)數(shù)器。假設(shè)晶體頻率沒(méi)有誤差，而且穩(wěn)定不變（實(shí)際上可達(dá)萬(wàn)分之一）；被測(cè)信號(hào)是周期性矩形波（正負(fù)脈沖寬度都不能小于0.5us），頻率小于1MHz，大于1Hz。要求測(cè)量時(shí)標(biāo)1S，測(cè)量精度為0.1％。
標(biāo)簽： MHz 24 低頻 中斷應(yīng)用
上傳時(shí)間： 2016-08-19
上傳用戶(hù)：wxhwjf
頻率計(jì)c語(yǔ)言程序（原創(chuàng)），可測(cè)范圍在10hz～2MHz
上傳時(shí)間： 2016-10-22
上傳用戶(hù)：王者A
*** *** *** *** *** *** ***** ** Two wire/I2C Bus READ/WRITE Sample Routines of Microchip s ** 24Cxx / 85Cxx serial CMOS EEPROM interfacing to a ** PIC16C54 8-bit CMOS single chip microcomputer ** Revsied Version 2.0 (4/2/92). ** ** Part use = PIC16C54-XT/JW ** Note: 1) All timings are based on a reference crystal frequency of 2MHz ** which is equivalent to an instruction cycle time of 2 usec. ** 2) Address and literal values are read in octal unless otherwise ** specified.
標(biāo)簽： Microchip Routines Sample WRITE
上傳時(shí)間： 2013-12-27
上傳用戶(hù)：ljmwh2000
ex9_1 脈沖信號(hào)調(diào)制 ex9_2 載波10MHz，帶寬2MHz的線(xiàn)性調(diào)頻信號(hào)及其頻譜圖 ex9_3 產(chǎn)生7位巴克碼編碼的二相碼 ex9_4 產(chǎn)生7位巴克碼和線(xiàn)性調(diào)頻的混合調(diào)制信號(hào) ex9_5 瑞利分布實(shí)現(xiàn)程序 ex9_6 瑞利分布＋雜波 ex9_7 相關(guān)對(duì)數(shù)正態(tài)分布雜波 ex9_8 相關(guān)weibull分布雜波 ex9_9 相干相關(guān)K分布雜波 ex9_10 線(xiàn)性調(diào)頻信號(hào)的數(shù)字化正交解調(diào) ex9_11 雷達(dá)脈沖壓縮處理 ex9_12 二相編碼信號(hào)的脈壓處理 ex9_13 用FFT和FIR方法實(shí)現(xiàn)MTD處理 ex9_14 雷達(dá)的恒虛警處理（CFAR） ex9_15 比較相參積累和非相參積累
上傳時(shí)間： 2014-01-20
上傳用戶(hù)：waizhang
The PW5410B is a low noise, constant frequency (1.2MHz) switched capacitor voltage doubler. Itproduces a regulated output voltage from 1.8V to 5V input with up to 100mA of output current. Lowexternal parts count (one flying capacitor and two small bypass capacitors at VIN and VOUT) makethe PW5410B ideally suited for small, battery-powered applications
標(biāo)簽： pw5410
上傳時(shí)間： 2022-02-11
上傳用戶(hù)：wangshoupeng199
The PW5410A is a low noise, constant frequency (1.2MHz) switched capacitor voltage doubler. Itproduces a regulated output voltage from 2.7V to 5V input with up to 250mA of output current. Lowexternal parts count (one flying capacitor and two small bypass capacitors at VIN and VOUT) makethe PW5410A ideally suited for small, battery-powered applications
標(biāo)簽： pw5410
上傳時(shí)間： 2022-02-11
上傳用戶(hù)：
PW5100 是一款高效率、低功耗、低紋波、高工作頻率的 PFM 同步升壓 DC/DC 變換器。輸出電壓可以進(jìn)行內(nèi)部調(diào)節(jié)，實(shí)現(xiàn)從 3.0V 至 5.0V 的固定輸出電壓， 調(diào)節(jié)步進(jìn)為 0.1V。PW5100 僅需要三個(gè)外圍元件，就可將低輸入電壓升壓到所需的工作電壓。系統(tǒng)的工作頻率高達(dá) 1.2MHz， 支持小型的外部電感器和輸出電容器， 同時(shí)又能保持超低的靜態(tài)電流，實(shí)現(xiàn)最高的效率。
標(biāo)簽： pw5100
上傳時(shí)間： 2022-02-11
上傳用戶(hù)：20125101110
The PW2053 is a high-efficiency monolithic synchronous buck regulator using a constantfrequency, current mode architecture. The device is available in an adjustable version. Supply currentwith no load is 40uA and drops to <1uA in shutdown. The 2.5V to 5.5V input voltage range makesthe PW2053 ideally suited for single Li-Ion battery powered applications. 100% duty cycle provideslow dropout operation, extending battery life in portable systems. PWM/PFM mode operationprovides very low output ripple voltage for noise sensitive applications. Switching frequency isinternally set at 1.2MHz, allowing the use of small surface mount inductors and capacitors. Lowoutput voltages are easily supported with the 0.6V feedback reference voltage
標(biāo)簽： pw2053
上傳時(shí)間： 2022-02-14
上傳用戶(hù)：jason_vip1
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