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單片機(jī)頻率合成器.doc

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單片機(jī)頻率合成器,(1)single-chip microcomputer frequency synthesizer(1)全文66頁(yè)約35000字論述翔實(shí) 圖文并茂 摘要頻率合成器是從一個(gè)或多個(gè)參考頻率中產(chǎn)生多種頻率的器件,它在信息通信方面和當(dāng)今調(diào)頻廣播發(fā)送方面得到了廣泛的應(yīng)用。隨著數(shù)字技術(shù)的飛速發(fā)展,使頻率合成技術(shù)也...
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單片機(jī)頻率合成器(1)
Single-chip Microcomputer Frequency Synthesizer(1)

全文66頁(yè) 約35000字 論述翔實(shí) 圖文并茂

摘 要
頻率合成器是從一個(gè)或多個(gè)參考頻率中產(chǎn)生多種頻率的器件,它在信息通信方面和當(dāng)今調(diào)頻廣播發(fā)送方面得到了廣泛的應(yīng)用。隨著數(shù)字技術(shù)的飛速發(fā)展,使頻率合成技術(shù)也躍上了一個(gè)新的臺(tái)階,本文主要介紹新型數(shù)字化可編程頻率合成器的原理和特點(diǎn)。
本設(shè)計(jì)中,我們采用了數(shù)字直接合成的方法來(lái)完成頻率合成。硬件部分由基準(zhǔn)頻率產(chǎn)成模塊、頻率合成模塊、鍵盤輸入模塊、顯示模塊四大部分組成。具體實(shí)施辦法是:以單片機(jī)AT89C52為核心,通過(guò)鍵盤向單片機(jī)輸入指定頻率,再由單片機(jī)控制可編程計(jì)數(shù)器8254和鎖相環(huán)4046組成的合成模塊,輸出指定頻率;同時(shí),單片機(jī)將合成的頻率送顯示模塊顯示出來(lái)。對(duì)應(yīng)硬件的4個(gè)模塊,設(shè)計(jì)中的軟件部分也分為對(duì)應(yīng)的4個(gè)模塊,它指導(dǎo)硬件完成工作。
設(shè)計(jì)過(guò)程中,硬件設(shè)計(jì)中使用了工具PROTEL99SE制作原理圖和PCB板圖,軟件設(shè)計(jì)中使用了模塊編程的方法。調(diào)試過(guò)程中使用了示波器,萬(wàn)用表,編程器及其軟件,超想仿真頭及其軟件。
本文首先在緒論介紹了此系統(tǒng)的研究意義。在第1章里,論述了系統(tǒng)構(gòu)成理論,確定了單片機(jī)的任務(wù)內(nèi)容。第2章著重介紹了系統(tǒng)中所使用的硬件芯片的功能與特性、硬件的電路設(shè)計(jì),在第3章中重點(diǎn)剖析了軟件設(shè)計(jì)的過(guò)程,第4章是產(chǎn)品的調(diào)試,排除設(shè)計(jì)上的錯(cuò)誤,完善設(shè)計(jì),同時(shí)附上硬件原理圖、PCB板圖、硬件實(shí)物圖及總程序。

關(guān)鍵詞:?jiǎn)纹瑱C(jī);頻率合成;鍵盤輸入;LED顯示

Abstract
The frequency synthesizer is produces the many kinds of frequencies component from or many references frequencies, it and now the FM broadcast transmission aspect obtained the widespread application in the information correspondence aspect. Along with digital technology rapid development,Caused the frequency synthesis technology also to leap to jump onto a new stair, this article main introduction new digitization programmable frequency synthesizer principle and the characteristic.
In this design, we used the digital direct synthesis method to complete the frequency synthesis. The hardware partially produces the module, the frequency synthesis module, the keyboard entry module, the demonstration module by the datum frequency four major part is composed. The concrete implementation means are: Take monolithic integrated circuit AT89C52 as the core, assigns the frequency through the keyboard to the monolithic integrated circuit input, again controls the synthesis module by the monolithic integrated circuit which the programmable counter 8254 and the phase-lock link 4046 is composed, the output assigns the frequency; At the same time, the monolithic integrated circuit will synthesize the frequency will deliver the demonstration module to demonstrate. Corresponds the hardware 4 modules, in the design software partial also divides into corresponding 4 modules, it instructs the hardware to complete the work.
In the design process, in the hardware design has used the tool PROTEL99SE manufacture schematic diagram and the PCB board chart, in the software design has used the method which the module programs. In the debugging process has used the oscilloscope, the avonmeter, the programming and its the software, ultra thinks the simulation and its the software.
This article first introduced this system research significance in the introduction. In the 1st chapter, elaborated the system constitution theory, has determined the monolithic integrated circuit task definition. 2nd chapter introduced emphatically in the system uses the hardware chip function and the characteristic, the hardware circuit design, analyzed the process with emphasis in the 3rd chapter which the software designs, the 4th chapter is the product debugging, removes in the design the mistake, consummates the design.At last enclosed hardware schematic diagram, PCB board chart, hardware in kind chart and total procedure.

Key words: Single-chip microcomputer(SCM); the monolithic integrated circuit;the frequency synthesis; the keyboard entry; LED demonstrated

目 錄

摘 要 I
ABSTRACT II
緒 論 1
第一章 理論基礎(chǔ)及系統(tǒng)要求 2
1.1 引言 2
1.2 系統(tǒng)構(gòu)成 2
1.2.1 系統(tǒng)基本原理 2
1.2.2 系統(tǒng)組成和流程 2
1.3 控制系統(tǒng)任務(wù) 2
1.4 本章小結(jié) 3
第二章 系統(tǒng)硬件電路 4
2.1 引言 4
2.2 硬件介紹 4
2.2.1 單片機(jī)AT89C52 4
2.2.2 可編程定時(shí)/計(jì)數(shù)器8254 5
2.2.3 鎖相環(huán)CD4046介紹 11
2.2.4 譯碼器CD4511 13
2.3 硬件電路設(shè)計(jì)與實(shí)現(xiàn) 14
2.3.1 頻率合成模塊 14
2.3.2 控制輸入模塊 15
2.3.3 顯示模塊 16
2.3.4 單片機(jī)外圍電路及端口使用 17
2.4 本章小結(jié) 18
第三章 系統(tǒng)軟件編寫與分析 19
3.1 引言 19
3.2 局部功能模塊分析與編寫 19
3.2.1 基準(zhǔn)時(shí)鐘頻率產(chǎn)生程序的分析與編寫 19
3.2.2 頻率合成模塊程序的分析與編寫 23
3.2.3 鍵盤判斷與響應(yīng)程序分析與編寫 25
3.2.4 頻率數(shù)值顯示程序的分析與編寫 29
3.3 總程序 32
3.4 本章小結(jié) 33
第四章 系統(tǒng)整體調(diào)試 34
4.1 調(diào)試工具 34
4.2 硬件調(diào)試 34
4.3 軟件調(diào)試 34
4.3.1 單片機(jī)AT89C52工作調(diào)試 35
4.3.2 顯示調(diào)試 37
4.3.3 基準(zhǔn)時(shí)鐘頻率產(chǎn)生調(diào)試 38
4.3.4 可編程定時(shí)/計(jì)數(shù)器8254調(diào)試 40
4.4 整體調(diào)試 42
4.5 本章小結(jié) 44
結(jié) 論 45
致 謝 47
參考文獻(xiàn) 48
附錄一 系統(tǒng)硬件電路設(shè)計(jì)原理圖 50
附錄二 系統(tǒng)PCB外觀圖 51
附錄三 實(shí)物外觀圖 52
附錄四 系統(tǒng)總程序 53

部分參考文獻(xiàn)

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