【正文】 is demonstrated. This paper introduces microcontroller AT89C52 single applications in system, the application system were analyzed each part of hardware and software realization. This design is to plete a reliable and stable working voice recording circuit. The design is simple in structure, reliable control and facilitate promotion. Keywords: ISD4004； 89C52microcontroller； voice recording and playback I 目 錄 引 言 ......................................................................................................................................... 1 第 1 章緒論 .................................................................................................................................. 2 系統(tǒng)設(shè)計的意義 ................................................................................................................... 2 系統(tǒng)設(shè)計的目的 ................................................................................................................... 2 系統(tǒng)采用的實現(xiàn)方法 .......................................................................................................... 3 第 2 章 單片機控制技術(shù)和開發(fā)環(huán)境介紹 ....................................................................... 4 89C52 單片機性能和 引腳介紹 ........................................................................................... 4 概述 ............................................................................................................................... 4 AT89C52 主要性能參數(shù) ................................................................................................. 4 引腳功能說明 ................................................................................................................. 4 KEIL開發(fā)環(huán)境和建立工程 .................................................................................................... 8 keil 簡介 .......................................................................................................................... 8 Keil 工程建立 ................................................................................................................. 8 ISD4004 介紹 ..................................................................................................................... 11 性能簡述和引腳圖 ....................................................................................................... 11 引腳描述 ....................................................................................................................... 11 SPI(串行外設(shè)接口 ) .......................................................................................................... 13 協(xié)議介紹 ....................................................................................................................... 13 信息快進 ...................................................................................................................... 14 上電順序 ....................................................................................................................... 14 SPI 端口的控制位 ........................................................................................................ 15 SPI 控制寄存器 ............................................................................................................ 16 時序 ............................................................................................................................... 16 第 3 章 系統(tǒng)總體設(shè)計 ........................................................................................................... 18 硬件電路設(shè)計 .................................................................................................................... 18 II 硬件電路圖 ................................................................................................................... 18 ISD4004 原理圖 ........................................................................................................... 18 軟件設(shè)計 ............................................................................................................................ 19 語音芯片的內(nèi)部信息尋址機制 ................................................................................... 19 監(jiān)控 ISD4004 錄音地址的實例 .................................................................................. 20 程序流程圖 ................................................................................................................... 21 第 4 章 測試實例 .................................................................................................................... 23 測試內(nèi)容 ............................................................................................................................ 23 測試結(jié)果 ............................................................................................................................ 23 基于 ISD4004 的家庭語音報警系統(tǒng)設(shè)計 ........................................................................ 23 語音錄放模塊設(shè)計 ..................................................................................................... 24 系統(tǒng)軟件設(shè)計 ............................................................................................................. 25 基于 ISD4004 的紅外遙控醫(yī)院語音播報系統(tǒng)的設(shè)計 .................................................... 26 系統(tǒng)的硬件設(shè)計 ............................................................................. 錯誤 !未定義書簽。針對錄放系