【正文】 片擁有 8路 10位精度的 ADC，其中一路為音頻轉(zhuǎn)換通道，并且內(nèi)置有自動(dòng)增益電路。上海大學(xué) 畢業(yè)設(shè)計(jì)（論文） I 基于單片機(jī) 數(shù)碼錄音與播放系統(tǒng) 的設(shè)計(jì) 摘 要 本次畢業(yè)論文設(shè)計(jì)主要是利用凌陽(yáng)最新開(kāi)發(fā)的 16位單片機(jī)來(lái)制作一個(gè)數(shù)碼錄音和播放系統(tǒng)。 要求能最少實(shí)現(xiàn) 4 分鐘的語(yǔ)音錄放且音質(zhì)清晰。這為實(shí)現(xiàn)語(yǔ)音錄入提供了方便的硬件條件。另外凌陽(yáng)十六位單片機(jī)具有易學(xué) 易用的效率較高的一套指令系統(tǒng)和集成開(kāi)發(fā)環(huán)境。 W29C040 是臺(tái)灣華邦公司生產(chǎn)的 4M 位的 FLASH 存儲(chǔ)芯片，利用它存儲(chǔ)凌陽(yáng)格式的語(yǔ)音資源，可以長(zhǎng)達(dá) 4 分鐘語(yǔ)音錄放 [12]。如錄音筆、自錄語(yǔ)音提示等應(yīng)用方案。 關(guān)鍵詞 ： SPCE061A。錄音 /播放 。 D a 16 microcontroller, which can be very easy to use and flexible voice recording and playback system, the chip has the 10bit precision ADC of eight, which transform the way for the audio channel, and builtin automatic gain circuit. This provides a convenient voice entry hardware conditions. The 10 bit precision DAC of two, only need an external power amplifier (SPY0030A) to plete the voice of the play. Also Sunplus 16 MCU with easyefficient instruction set and integrated development environment. In this environment, support the standard C language, can achieve C language and assembly language Sunplus call each other and provide a voice record of the library functions, as long as the understanding of the use of library functions, you can easily plete voice recorders, which are software development provides a convenient conditions. The W29C040 memory which is manufactured by Taiwan39。 W29C040。 FLASH 上海大學(xué) 畢業(yè)設(shè)計(jì)（論文） III 目 錄 引 言 ............................................................................................................................ 1 第 1 章 緒論 ...................................................................................................................... 2 概述 ........................................................................................................................... 2 課題的總體設(shè)計(jì)及思路 ........................................................................................... 2 課題的方案選擇 ....................................................................................................... 3 第 2 章 硬件電路設(shè)計(jì) ...................................................................................................... 5 硬件最小系統(tǒng)設(shè)計(jì) ................................................................................................... 5 SPCE061A 芯片結(jié)構(gòu)簡(jiǎn)介 .................................................................................. 5 復(fù)位電路的設(shè)計(jì) ................................................................................................ 10 時(shí)鐘電路的設(shè)計(jì) ................................................................................................ 11 SPCE061A 開(kāi)發(fā)工具 ........................................................................................ 12 時(shí)鐘電路的設(shè)計(jì) ...................................................................................................... 12 DS1302 芯片簡(jiǎn)介 .............................................................................................. 12 DS1302 結(jié)構(gòu)框圖與引腳介紹 .......................................................................... 12 DS1302 與單片機(jī)的硬件電路的設(shè)計(jì) .............................................................. 14 顯示電路的設(shè)計(jì) ..................................................................................................... 14 液晶顯示原理 ................................................................................................... 14 SMC1602 芯片簡(jiǎn)介 .......................................................................................... 15 顯示電路的設(shè)計(jì) ................................................................................................ 17 語(yǔ)音電路的設(shè)計(jì) ..................................................................................................... 18 W29C040 簡(jiǎn)介 .................................................................................................. 18 W29C040 引腳結(jié)構(gòu)及讀寫(xiě)時(shí)序 ...................................................................... 18 數(shù)碼錄音與播放系統(tǒng)結(jié)構(gòu) ............................................................................... 20 音頻錄入與輸出部分詳細(xì)設(shè)計(jì) ....................................................................... 20 按鍵電路的設(shè)計(jì) ..................................................................................................... 22 第 3 章 軟件部分設(shè)計(jì) .................................................................................................... 23 主程序設(shè)計(jì) ............................................................................................................. 23 相應(yīng)子程序設(shè)計(jì) ..................................................................................................... 25 按鍵掃描子程序設(shè)計(jì) ...................................................................................... 25 時(shí)間顯示子程序設(shè)計(jì) ....................................................................................... 26 錄音和播放程序設(shè)計(jì) ....................................................................................... 26 凌陽(yáng)音頻介紹 ......................................................................................................... 28 第 4 章 調(diào) 試 ............................................................................................................ 31 結(jié)論與展望 ...................................................................................................................... 32 致 謝 .......................................................................................................................... 33 參考文獻(xiàn) .......................................................................................................................... 34 附錄 A：總圖 .................................................................................................................. 35 附錄 B：外文文獻(xiàn)及譯文 ............................................................................................... 36 附錄 C: 主要參考文獻(xiàn)及摘要 ....................................................................................... 42 附錄 D: 部分源程序（ C語(yǔ)言） ................................................................................... 44 上海大學(xué) 畢業(yè)設(shè)計(jì)（論文） IV 插 圖清單 圖 11 設(shè)計(jì)框圖 ………………………………………………………………………………… 3